Patent Application
20130106150
The present invention generally relates to chair assemblies, and more particularly, to chair assemblies equipped with systems to promote comfort of the user.
A typical chair tends to include a seat and a backrest. Some chairs may include other features such as armrests and/or wheels. While chairs have been in existence for centuries, they can be uncomfortable in some situations. For instance, a chair can become uncomfortable if a user sits on it for an extended period of time. As another example, a user may find sitting in a chair uncomfortable when the chair is located in a warm environment (e.g., outdoors during the summer). Some people would likely find it desirable to have a chair that enhances comfort for a user.
Chair assemblies described in this Summary section generally include a seat and a backrest. The backrest generally includes a bottom, a top opposite the bottom, a front side, and a back side opposite the front side. Further, the seat generally includes a top side, a bottom side opposite the top side, a front, and a rear opposite the front.
A first aspect of the present invention has a fan assembly attached to the bottom of the backrest. The fan assembly associated with the first aspect of the invention may have both an air intake and an air output. In some embodiments, the air intake may face generally away from the top of the backrest, and the air output may face generally toward the top of the backrest. In some embodiments, this may mean that the fan assembly is positioned such that airflow therefrom may be oriented generally upward toward the top of the backrest. For example, the fan assembly may be positioned such that airflow therefrom may be generally oriented in a direction from by the bottom of the backrest to toward the top of the backrest. In some embodiments, a distance between the air intake and the seat of the chair assembly may be less than a distance between the air output and the seat. In other words, the seat may be closer to the air intake than to the air output.
An airflow guide may be associated with the backrest of the first aspect. While not necessarily the case all the time, it is generally preferred that the airflow guide be substantially impermeable to airflow. In embodiments having an airflow guide, the fan assembly may be found in any appropriate location. For instance, the fan assembly may be located between the airflow guide and the back side of the backrest. The airflow guide may be associated with the backrest in a manner such that a significant amount of, a majority of, or even substantially all airflow emitted from the fan assembly exits the chair assembly through the backrest.
In embodiments of the first aspect having an airflow guide, a distance between the bottom of the backrest and an opposing portion of a bottom of the airflow guide may be greater than a distance between the top of the backrest and an opposing portion of a top of the airflow guide. In some embodiments, the airflow guide may angle at least generally toward the top of the backrest and angle at least generally away from a bottom of the backrest.
A second aspect of the invention includes a fan assembly associated with the backrest and an airflow guide into which airflow from the fan assembly is directed. The airflow guide of this second aspect is associated with the backrest in a manner such that airflow emitted from the fan assembly exits the chair assembly through the backrest. It is generally preferred that the airflow guide of this second aspect be substantially impermeable to airflow. In some embodiments, the backrest and airflow guide of the chair assembly may be positioned relative to one another such that a distance between the bottom of the backrest and an opposing portion of a bottom of the airflow guide is greater than a distance between the top of the backrest and an opposing portion of a top of the airflow guide. In some embodiments, the airflow guide may angle at least generally toward the top of the backrest and at least generally away from the bottom of the backrest.
A fan assembly may be incorporated in a chair assembly of the first and/or second aspect in any of a number of appropriate manners. For instance, the back side of the backrest may be disposed between the fan assembly and the front side of the backrest. Accordingly, the fan assembly may be associated with the back side of the backrest (e.g., and not associated with the front side thereof). In some embodiments, the fan assembly may be attached to the bottom of the backrest at the back side thereof. In embodiments that include a frame, the fan assembly may be attached to a portion of the frame adjacent the bottom of the backrest such that the back side of the backrest is disposed between the fan assembly and the front side of the backrest.
In embodiments of the first and/or second aspects of the invention having an airflow guide, the airflow guide may exhibit any appropriate size and dimensions. For instance, the airflow guide may substantially extend an entire length of the backrest between the top and the bottom thereof. In some embodiments, the airflow guide may substantially extend an entire width of the backrest between a right side and a left side thereof.
In embodiments of the first and/or second aspects of the invention having an airflow guide, the airflow guide may be associated with the backrest in any appropriate manner. For example, the airflow guide may be attached to the top of the backrest. In embodiments that include a frame, the airflow guide may be attached to a portion of the frame located adjacent the top of the backrest. Additionally and/or alternatively, the airflow guide may be attached to a left side and/or a right side of the backrest. In embodiments that include a frame, the airflow guide may be attached to a portion of the frame located adjacent the left side of the backrest and/or a portion of the frame located adjacent the right side of the backrest. In addition to being associated with the backrest, the airflow guide of some embodiments may be attached to the fan assembly.
A third aspect of the invention has a fan assembly attached to the rear of the seat. The fan assembly associated with the third aspect of the invention may be oriented in a number of suitable fashions relative to the seat of the chair assembly. For instance, the fan assembly may include an air intake that faces generally away from the front of the seat and an air output that faces generally toward the front of the seat. As another example, the fan assembly may be positioned such that airflow therefrom is generally oriented in a direction from by the rear of the seat to toward the front of the seat. As yet another example, the fan assembly may be oriented such that a distance between an air intake of the fan assembly and the backrest is less than a distance between an air output of the fan assembly and the backrest. In other words, the air intake may be closer to the backrest than the air output is to the backrest.
In some embodiments of the third aspect, an airflow guide may be associated with the seat in a manner such that the fan assembly is positioned between the airflow guide and the bottom side of the seat. This airflow guide may be substantially impermeable to airflow. In some embodiments, a distance between the rear of the seat and an opposing portion of a rear of the airflow guide may greater than a distance between the front of the seat and an opposing portion of a front of the airflow guide. In some embodiments, the airflow guide may angle at least generally toward the front of the seat and angle at least generally away from a rear of the seat.
A fourth aspect of the invention includes a fan assembly associated with the seat, and an airflow guide associated with the seat in a manner such that airflow emitted from the fan assembly exits the chair assembly through the seat. It is generally preferred that the airflow guide of this fourth aspect be substantially impermeable to airflow. In some embodiments, a distance between the rear of the seat and an opposing portion of a rear of the airflow guide is greater than a distance between the front of the seat and an opposing portion of a front of the airflow guide. In some embodiments, the airflow guide angles at least generally toward the front of the seat and angles at least generally away from a rear of the seat.
The fan assembly may be incorporated in the chair assembly of the third and/or fourth aspect in any of a number of appropriate manners. For instance, the bottom side of the seat may be disposed between the fan assembly and the top side of the seat. Accordingly, the fan assembly may be associated with the bottom side of the seat (e.g., and not associated with the top side thereof). In some embodiments, the fan assembly may be attached to the rear of the seat at the bottom thereof. In embodiments that include a frame, the fan assembly may be attached to a portion of the frame adjacent the rear of the seat such that the rear of the seat is disposed between the fan assembly and the top side of the seat. In addition to be associated with the seat, the airflow guide of some embodiments may be attached to the fan assembly.
A fifth aspect of the invention includes an airflow guide associated with the bottom side of the seat in a manner such that the airflow guide is attached to the bottom side of the seat and/or a portion of the frame adjacent the bottom side of the seat. In addition, a fan assembly is attached to the airflow guide such that the airflow guide is located at least generally between the bottom side of the seat and the fan assembly. It is generally preferred that the airflow guide of this fifth aspect be substantially impermeable to airflow. Further, the airflow guide of this fifth aspect at least generally tapers from near the bottom side of the seat toward the fan assembly. In some embodiments, the fan assembly of the fifth aspect may be characterized as having both an air intake and an air output. In such embodiments, the fan assembly may be oriented such that the air intake faces generally away from the bottom side of the seat, and such that the air output faces generally toward the bottom side of the seat.
In some embodiments of the fifth aspect, the airflow guide may include (e.g., be substantially constructed of) a pliable material. In such embodiments, the fan assembly may be spaced from the bottom side of the seat by a first distance when a support mechanism of the chair assembly is disengaged, and spaced from the bottom side of the seat by a second distance substantially less than the first distance when the support mechanism is engaged. In some embodiments, the airflow guide may be collapsed and folded over itself when a support mechanism of the chair assembly is engaged, and the airflow guide may be extended and unfolded when the support mechanism is disengaged.
Some chair assemblies of the fifth aspect may be movable between an open condition and a closed condition. In the open condition, the fan assembly may be spaced from the bottom side of the seat by a first distance, and, in the closed condition, the fan assembly may be spaced from the bottom side of the seat by a second distance substantially less than the first distance. In some embodiments of the fifth aspect, the closed condition may include the airflow guide being collapsed and folded over itself, and the open condition may include the airflow guide being extended and unfolded.
The airflow guide associated with one or more of the third, fourth, and/or fifth aspects may be associated with the seat in a manner such that a significant amount of, a majority of, or even substantially all airflow emitted from the fan assembly exits the chair assembly through the seat. The airflow guide may exhibit any appropriate size and dimensions. For instance, the airflow guide may substantially extend an entire length of the seat between the front and the rear thereof. The airflow guide may substantially extend an entire width of the seat between a right side and a left side thereof.
In embodiments of the third, fourth, and/or fifth aspect of the invention, the airflow guide may be associated with the seat in any suitable fashion. For instance, the airflow guide may be attached to the front and/or the rear of the seat. Similarly, the airflow guide may be attached to a left side and/or a right side of the seat. Some embodiments of the chair assembly may include a frame. In such embodiments, the airflow guide may be attached to the frame. For instance, the airflow guide may be attached to a portion of the frame located adjacent the front of the seat and/or to a portion of the frame located adjacent the rear of the seat. Additionally or alternatively, the airflow guide may be attached to a portion of the frame located adjacent the left side of the seat and/or a portion of the frame located adjacent the right side of the seat.
Yet a sixth aspect of the present invention is directed to a chair assembly that includes both a backrest assembly and a seat assembly. The backrest assembly of this sixth aspect includes a backrest and a first fan assembly associated with the backrest. Similarly, the seat assembly of this sixth aspect includes a seat and a second fan assembly associated with the seat.
Each of the first and second fan assemblies of the sixth aspect can exhibit any of a number of appropriate designs, can be oriented in any of a number of appropriate fashions, and can be incorporated into the chair assembly in any appropriate manner. For instance, in some embodiments, the first fan assembly may exhibit any design and/or orientation described above in regard to the fan assembly of the first and/or second aspects of the invention. Further, the first fan assembly in some embodiments may be incorporated into the chair assembly of the sixth aspect in any manner described above in regard to the fan assembly of the first and/or second aspects of the invention. Likewise, in some embodiments, the second fan assembly may exhibit any design and/or orientation described above in regard to the fan assembly of the third, fourth, and/or fifth aspects of the invention. Also, the second fan assembly in some embodiments may be incorporated into the chair assembly of the sixth aspect in any manner described above in regard to the fan assembly of the third, fourth, and/or fifth aspects of the invention.
In some embodiments of the sixth aspect, one or both of the seat assembly and the backrest assembly may include an airflow guide. For instance, the chair assembly may have an airflow guide associated with at least one of the backrest or the seat. As such, some embodiments may have a first airflow guide associated with the backrest and a second airflow guide associated with the seat. In the case that there is an airflow guide (first airflow guide) associated with the backrest, that airflow guide can exhibit any of a number of appropriate designs such as, for example, any design described above in regard to an airflow guide associated with the first and/or second aspects of the invention. Further, the first airflow guide in some embodiments may be incorporated into the chair assembly of the sixth aspect in any manner described above in regard to an airflow guide of associated with the first and/or second aspects of the invention. Similarly, in the case that there is an airflow guide (second airflow guide) associated with the seat, that airflow guide can exhibit any of a number of appropriate designs such as, for example, any design described above in regard to an airflow guide associated with the third, fourth, and/or fifth aspects of the invention. Also, the second airflow guide in some embodiments may be incorporated into the chair assembly of the sixth aspect in any manner described above in regard to an airflow guide of associated with the third, fourth, and/or fifth aspects of the invention.
A number of feature refinements and additional features are applicable to each of the first, second, third, fourth, fifth, and sixth aspects of the present invention. These feature refinements and additional features may be used individually or in any combination. The following discussion is applicable to embodiments of the first, second, third, fourth, fifth, and sixth aspects of the present invention.
Some chair assemblies of the present invention may be characterized as being portable and/or collapsible. In this regard, an embodiment of a chair assembly being “portable” may refer to its ability to be moved and/or carried with ease by a user. Further, an embodiment of a chair assembly being “collapsible” may refer to its ability to be moved between an open condition and a closed condition (e.g., where the chair assembly, in the closed condition, is a more compact size, for example, for storage and/or transport thereof). Indeed, some chair assemblies of the invention are movable between the open condition and the closed condition. In some embodiments, a chair assembly being in the open condition may refer to the chair assembly being configured to allow a user to sit on the top side of the seat and place a back of the user against the front of the backrest. Additionally or alternatively, the open condition of a chair assembly may refer to the top side of the seat being at an angle of between about 80 degrees and about 180 degrees (e.g., between about 90 degrees and about 160 degrees) relative to the front of the backrest. With regard to the closed condition, in some embodiments, a chair assembly in the closed condition may be configured such that the top side of the seat at least generally faces and/or is in proximity with the front of the backrest. Additionally or alternatively, the closed condition of a chair assembly may refer to the top side of the seat at least generally facing the front of the backrest and/or being at an angle of between about 0 degrees and about 45 degrees relative to the front of the backrest.
In embodiments of a chair assembly having a frame, the frame may include first and second portions that are pivotally interconnected with one another so that at least one of the seat and backrest can be pivoted toward and away from the other (e.g., to promote transitions between the open condition and the closed condition). Herein, “pivotally interconnected” or the like refers to any type of interconnection that allows a structure to at least generally undergo a pivoting or pivotal-like motion when exposed to an appropriate force, including without limitation any interconnection that allows a structure or a portion thereof to move at least generally about a certain axis. Representative pivotal interconnections include the use of a flexing or elastic deformation of a structure or a portion thereof, as well as the use of relative motion between two or more structures that are typically in interfacing relation during at least a portion of the relative movement (e.g., a hinge connection; a ball and socket connection).
The backrest may be made of any of a number of appropriate materials (e.g., synthetic or natural) such as, for example, a vinyl-coated polyester mesh. It is generally preferred in embodiments having a fan assembly associated with the backrest that the backrest includes (e.g., is substantially constructed of) a material allowing airflow to pass therethrough. For instance, in some embodiments, the backrest may include a material that is substantially porous. Similarly, the seat may be made of any of a number of appropriate materials (e.g., synthetic or natural) such as, for example, a vinyl-coated polyester mesh. It is generally preferred in embodiments having a fan assembly associated with the seat that the seat includes (e.g., is substantially constructed of) a material allowing airflow to pass therethrough. For instance, in some embodiments, the seat may include a material that is substantially porous.
The airflow guide associated with one or more embodiments of any of the aspects of the invention may include (e.g., be substantially constructed of) any appropriate material (e.g., synthetic or natural) such as, but not limited to vinyl polyester, nylon, or a combination thereof. Further, the airflow guide may be substantially rigid in some embodiments and substantially pliable in other embodiments. In some embodiments, it may be preferable to have the airflow guide include a substantially pliable material so that the chair assembly may be lighter in weight and/or easier to store (e.g., in the case that portability and/or collapsibility are desired).
A chair assembly of any of the aspects above may exhibit any appropriate weight. In some embodiments, it may be desirable for the chair assembly not to exceed a certain weight threshold. For instance, in the case where a chair assembly is designed to be portable, it may be preferred that the weight of the chair assembly be such that the chair assembly can be moved and/or carried with ease. As such, the chair assembly may have a maximum weight of no more than about 8 pounds (lbs.) in some embodiments, no more than about 7 lbs. in other embodiments, no more than about 6 lbs. in still other embodiments, and no more than about 5 lbs. in yet other embodiments. In some embodiments, the chair assembly may have a maximum weight of between about 3 lbs. and about 8 lbs. (e.g., between about 5 lbs. and about 7 lbs.). Other embodiments may have chair assemblies exhibiting maximum weights of other appropriate magnitudes and/or ranges.
Significant sound emitted due to operation of a fan assembly associated with one or more aspects of the invention may be undesirable to some users. In this regard, some users may find significant background noise associated with operation of a given fan assembly to be distracting and/or disruptive. As such, a maximum level of sound (e.g., noise) emitted due to operation of a fan assembly may be no greater than about 65 dBA in some embodiments, no greater than about 60 dBA in other embodiments, no greater than about 55 dBA in yet other embodiments, no greater than about 50 dBA in still other embodiments, no greater than about 45 dBA in even other embodiments, and no greater than about 40 dBA in still yet other embodiments. In some embodiments, a maximum level of sound emitted due to operation of a fan assembly may be between about 40 dBA and about 65 dBA, or between about 45 dBA and about 60 dBA. Other embodiments may have fan assemblies exhibiting maximum sound levels of other appropriate magnitudes and/or ranges.
A fan assembly associated with any of the above-mentioned aspects of the invention may provide any of a number of suitable airflow outputs. It may be preferred by some that airflow provided by a given fan assembly be such that a user can feel the same when sitting in a chair assembly of the invention. In some embodiments, the magnitude of desired airflow may have to be balanced against the noise produced by the fan assembly such that the resulting airflow can be maximized while minimizing background noise due to operation of the fan assembly. For instance, a maximum airflow output of the fan assembly may be no more than about 350 cubic feet per minute (CFM) in some embodiments, no more than about 300 CFM in other embodiments, no more than about 250 CFM in still other embodiments, no more than about 200 CFM in yet other embodiments, no more than about 150 CFM in even other embodiments. In some embodiments, the maximum airflow output of the fan assembly may be between about 150 CFM and about 325 CFM, or between about 175 CFM and about 300 CFM. The maximum airflow output of the fan assembly may be no less than about 125 CFM in other embodiments. Still other embodiments may have fan assemblies exhibiting maximum airflow outputs of other appropriate magnitudes and/or ranges. Herein, a “maximum airflow output” of a fan assembly refers to the sum total of the maximum airflow outputs of each of the fan units that are included in the fan assembly.
A fan assembly associated with any of the aspects herein may include one or more fan units (e.g., 1, 2, 3, 4, 5, 6, or more fan units). For instance, some embodiments may have a fan assembly that includes 4 fan units. A maximum level of sound (e.g., noise) emitted due to operation of each fan unit may be no greater than about 60 dBA in some embodiments, no greater than about 50 dBA in other embodiments, no greater than about 45 dBA in still other embodiments, no greater than about 40 dBA in yet other embodiments, no greater than about 35 dBA in even other embodiments, and no greater than about 30 dBA in still yet other embodiments. In some embodiments, a maximum level of sound emitted due to operation of each fan unit may be between about 20 dBA and about 50 dBA, or between about 25 dBA and about 45 dBA. Still other embodiments may have fan units exhibiting maximum sounds levels of other appropriate magnitudes and/or ranges.
As mentioned in the preceding paragraph, a fan assembly associated with any of the aspects herein may include one or more fan units (e.g., 1, 2, 3, 4, 5, 6, or more fan units). A maximum airflow output of each fan unit may be no more than about 70 CFM in some embodiments, no more than about 65 CFM in other embodiments, no more than about 60 CFM in still other embodiments, no more than about 55 CFM in yet other embodiments, no more than about 50 CFM in even other embodiments, and no more than about 45 CFM is still yet other embodiments. In other embodiments, the maximum airflow output of each fan unit may be no more than about 40 CFM, no more than about 35 CFM, no more than about 30 CFM, or even no more than about 25 CFM. In some embodiments, the maximum airflow output of each fan unit may be between about 20 CFM and about 60 CFM, or between about 25 CFM and about 55 CFM. Still other embodiments may have fan units exhibiting maximum airflow outputs of other appropriate magnitudes and/or ranges.
In the case that a fan assembly associated with any of the aspects of the invention includes a plurality of fan units, each fan unit may have a central axis substantially aligned with a direction of airflow therefrom. In such embodiments, the central axes of at least two (e.g., two, three, four, five, six, or all) of the fan units may be substantially parallel with one another.
A fan assembly associated with any of the above-described aspects may be powered in any appropriate fashion. For instance, a given fan assembly may be powered using AC power from a standard AC electrical outlet. Another fan assembly may utilize power (e.g., DC power) provided by a battery (e.g., disposable or rechargeable battery). Still other fan assemblies may utilize solar power. In some embodiments, a combination of power supplies, such as those listed above, may be utilized to power a given fan assembly.
In the case that a chair assembly described herein includes a plurality of fan assemblies (e.g., first and second fan assemblies), each fan assembly may have its own source of power. In such embodiments, the power source for one fan assembly of a given chair assembly may be same or different than the power source for another fan assembly of that same chair assembly. For example, in some embodiments, a first fan assembly may be powered by a first battery while a second fan assembly of the same chair assembly may be powered by a second battery that is separate and distinct from the first battery. As another example, a first fan assembly may be powered by a battery while a second fan assembly of the same chair assembly may be powered using AC power from a standard AC electrical outlet. In some embodiments having a plurality of fan assemblies, the fan assemblies may share a common power source (e.g., each fan assembly draws power from a common power source).
In the case that a fan assembly associated with any of the aspects above utilizes one or more batteries for power, a given fan assembly may include a battery compartment. This battery compartment may be disposed in any appropriate location relative to other components of the fan assembly. For instance, in some embodiments having a battery compartment and a plurality of fan units, at least one fan unit may be located on one side of the battery compartment, and at least another fan unit may be located on another side of the battery compartment substantially opposite the one side.
Still other aspects of the invention relate to designs and componentry of fan assemblies described herein, such as the fan assemblies mentioned above with regard to any of the first, second, third, fourth, and/or fifth aspects of the invention.
Yet other aspects of the invention relate to designs of airflow guides described herein, such as the airflow guides mentioned above with regard to any of the first, second, third, fourth, and/or fifth aspects of the invention.
Various features, aspects, and advantages of the present invention will become better understood when the following detailed description is read with reference to the accompanying figures in which like characters represent like parts throughout the figures.
Each of the seat 12 and the backrest 14 may be made of any of a number of appropriate materials (e.g., synthetic or natural) such as, for example, a vinyl-coated polyester mesh (e.g., a Textilene® material manufactured by Twitchell Corp. of Dothan, Ala.). In some embodiments, the seat 12 and the backrest 14 may be made from the same material(s). In other embodiments, the seat 12 may be made from a first material, and the backrest 14 may be made of a second material different from the first material. Since the fan assembly 18 is associated with (e.g., directly and/or indirectly attached to) the backrest 14 of the chair assembly 10, it is generally preferred that the backrest 14 include (e.g., be substantially constructed of) a material that allows airflow to pass therethrough. For instance, the backrest 14 may include a material that is substantially porous (including, but not limited to, weaves, screens, and meshes). The seat 12 may or may not include a material that allows airflow to pass therethrough (e.g. is substantially porous).
The seat 12 and the backrest 14 can be attached to the frame 16 in any appropriate manner such as by welds, adhesives, and/or mechanical fasteners (e.g., nails, screws, bolts, rivets, staples, and the like). In the illustrated embodiment, the frame 16 includes four legs 38a -d, each of which is pivotally interconnected with a seat portion 40 of the frame 16 (e.g., directly as shown with regard to the interconnection between the seat portion 40 and each front leg 38a, 38b, and indirectly as shown with regard to the interconnection between the seat portion 40 and each rear leg 38c, 38d employing mechanical supports 48 and a pivot rod 50 to provide the interconnection). The front legs 38a, 38b are interconnected (in this case, integral) with one another by way of a front cross bar 42. Further, the rear legs 38c, 38d are interconnected (in this case, integral) with one another by way of a rear cross bar 44. While the front and rear cross bars 42, 44 are shown as being positioned to interface with a support surface (e.g., the ground) in the illustrated embodiment, other embodiments may have front and/or rear cross bars located in other positions on the frame. Still other embodiments may not include one or both of the front and rear cross bars. In such embodiments, front leg 38a may not be connected to front leg 38b, and/or rear leg 38c may not be connected to rear leg 38d. In other embodiments, the frame 16 may exhibit any of a number of other appropriate designs.
The frame 16 of the chair assembly 10 also includes a backrest portion 46. As shown in
Also attached to the frame 16 of the chair assembly 10 are armrests 52a, 52b. More specifically, these armrests 52a, 52b are pivotally interconnected with the legs 38a -d of the frame 16. As shown in
The fan assembly 18 of the chair assembly 10 is shown as being associated with the bottom 22 of the backrest 14 such that the fan assembly 18 is attached to the bottom 22 of the backrest 14 and/or a portion of a frame 16 of the chair assembly 10 adjacent the bottom 22 of the backrest 14. More specifically, the fan assembly 18 is attached to the bottom 22 of the backrest 14 at the back side 28 thereof. This attachment can be accomplished in any appropriate manner (e.g., e.g., using welds, adhesives, and/or mechanical fasteners). Further, the fan assembly 18 is also attached to the frame 16 of the chair assembly 10 by way of the pivot rod 50 extending through at least a portion of a housing 54 of the fan assembly 18.
Each fan unit 58 of the fan assembly 18 has both an air intake 82 and an air output 84 such that air enters a given fan unit 58 via the air intake 82 and exits the fan unit 58 via the air output 84. This enables air to flow through the fan assembly 18 in the general manner indicated by arrows AF1 and AF2 of
As shown in
The airflow guide 20 may be substantially constructed of any appropriate material (e.g., synthetic or natural) such as, but not limited to vinyl polyester, nylon, or a combination thereof. Further, the airflow guide 20 is shown as being substantially pliable in the illustrated embodiment (represented by the waves/undulations in the airflow guide 20). This construction may promote the chair assembly 10 being lightweight and/or easy to store. However, other embodiments may include an airflow guide that is substantially rigid (e.g., constructed of a molded plastic).
The airflow guide 20 may exhibit any appropriate size and dimensions. For instance, the airflow guide 20 may substantially extend an entire length of the backrest 14 between the top 24 and the bottom 22 thereof as shown in
The various component of the fan assembly 18 can be viewed in
The fan assembly 18 is powered using a rechargeable battery 72. As such, the housing 54 of the fan assembly 18 includes a battery compartment 74 designed to house the battery 72. An example of one battery that could be employed by the fan assembly 18 is the PS-1251 FP Rechargeable Sealed Lead Acid Battery (12 Volt 5.4 AH) manufactured by Power-Sonic Corporation of San Diego, Calif. As shown in
The battery compartment 74 of the fan assembly 18 includes a recess 76 designed to accommodating the battery 72 and in which are appropriate contacts (not shown) for conveying power from the battery 72 to each of the fan units 58. The battery compartment 74 also includes a cover 78 that can be attached to the housing 54 of the fan assembly 18 to occlude an opening into the recess 76 of the battery compartment 74, thus inhibiting unintentional dissociation of the battery 72 from inside the battery compartment 74. This cover 78 can be attached to the housing 54 of the fan assembly 18 in any appropriate manner including, but not limited to, use of friction fit, mechanical fasteners, snap fittings, and the like. Other embodiments may exhibit other appropriate designs for the battery compartment 74 and/or its components.
On one side of the housing 54 of the fan assembly 18 are located a power switch 66, a fuse assembly 68, and a charging jack 70. The power switch 66 is shown as being a toggle switch but could be any other appropriate mechanism for turning the power to the fan units on and off. Further, the power switch 66 is preferably disposed on a side of the housing 54 so that a user of the chair assembly 10 can easily reach it while sitting on the chair assembly. That being said, other embodiments may include other appropriate locations for the power switch 66 (e.g., on a side of the housing 54 that includes the vents 56). The fuse assembly 68 generally houses a replaceable fuse (not shown) designed to protect the fan units 58 from exposure to excessive electrical current. An example of an appropriate fuse and fuse assembly that could be used with the fan assembly 18 include model number 03440012X manufactured by Littelfuse Inc., of Chicago, Ill. While the fuse assembly 66 is shown as being located on the same side of the housing 54 as the power switch 66, other embodiments may have a fuse assembly located in any of a number of other appropriate locations on the housing 54. While not necessarily preferred, other embodiments may not include a fuse assembly. Turning to the charging jack 70, an electrical cord (not shown) can be plugged into the jack 70 with the other end of the cord being plugged into a standard AC electrical outlet to charge the battery 72. In some embodiments, the electrical cord may include a AC/DC converter to convert AC power from the electrical outlet to DC power that may then provided to the battery 72 to charge the same.
In use, electrical power is carried from an AC outlet via a cord through the charging jack 70 and delivered to the battery 72 via appropriate circuitry in the housing 54 of the fan assembly 18. Further, moving the power switch 66 from the “off” position to the “on” position causes a circuit between the battery 72 and the fan units 58 to close, thus allowing power from the battery 72 to pass through the fuse assembly 68 and to the various fan units 58. Moving the power switch 66 from the “on” position to the “off” position causes the circuit between the battery 72 and the fan units 58 to open, thus preventing power from the battery 72 from reaching the various fan units 58.
Associated with each vent 56 of the housing 54 of the fan assembly 18 is a corresponding fan unit 58. While the illustrated fan assembly 18 includes four fan units 58, fan assemblies associated with other embodiments may include any other appropriate number of fan units (e.g., 1, 2, 3, etc.). Each of the fan units 58 illustrated in
Referring specifically to
The case 60 of a given fan unit 58 may be any of a number of appropriate sizes. For instance, some fan units tend to be distributed by manufacturers based on standard dimensional sizes of the various cases in which the other fan components are housed. In particular, the cases of many fan units have a length and a height that are substantially equal, and a thickness that tends to be less than each of the length and the width. Since the dimensions of the length and height for the cases of many fan units are generally equal, a fan unit of a given size (e.g., an 80 mm fan, a 92 mm fan, or a 120 mm fan) generally refers to the dimensional height and length of the case for that particular fan unit.
With respect the chair assembly 110 of
The fan assembly 118 of the chair assembly 110 shown in
Like the fan assembly 18 of the chair assembly 10, each fan unit of the fan assembly 118 has both an air intake 82 and an air output 84 such that air enters a given fan unit via the air intake 82 and exits the fan unit via the air output 84. This enables air to flow through the fan assembly 118 in the general manner indicated by arrows AF1 and AF2 of
As shown in
The airflow guide 120 of the chair assembly 110 may be substantially constructed of any appropriate material such as any material discussed in regard to the airflow guide 20 of the chair assembly 10. Further, the airflow guide 120 is shown as being substantially pliable in the illustrated embodiment (represented by the waves/undulations in the airflow guide 120). This construction may promote the chair assembly 110 being lightweight and/or easy to store. However, other embodiments may include an airflow guide that is substantially rigid (e.g., constructed of a molded plastic).
The airflow guide 120 may exhibit any appropriate size and dimensions. For instance, the airflow guide 120 may substantially extend an entire length of the seat 112 between the front 34 and the rear 36 thereof as shown in
Significant sound emitted due to operation of a fan assembly (e.g., 18 and/or 118) may be undesirable to some users. In this regard, some users may find significant background noise associated with operation of a given fan assembly to be distracting and/or disruptive. As such, a maximum level of sound (e.g., noise) emitted due to operation of a fan assembly of a given chair assembly may be no greater than about 65 dBA in some embodiments, no greater than about 60 dBA in other embodiments, no greater than about 55 dBA in yet other embodiments, and no greater than about 50 dBA in still other embodiments. In some embodiments, a maximum level of sound emitted due to operation of a fan assembly may be between about 40 dBA and about 65 dBA, or between about 45 dBA and about 60 dBA. Other embodiments may have fan assemblies exhibiting maximum sound levels of other appropriate magnitudes and/or ranges.
By way of example, sound measurement testing was conducted using one embodiment of the chair assembly 10 having a fan assembly 18 equipped with four JMC 902614-4 73CFM fan units and a Power Sonic PS-1227 2.9Ah battery. The sound measurements were acquired using a 3M Quest Technologies Model 2200 S/N: KOK050010 (SPL Setting; Fast Response; A Weighting; Background Level: <30 dBA). Table 1 below summarizes the data that was acquired in the sound measurement testing when an individual was seated on the seat 12 with his back against the backrest 14 of the chair assembly 10. Table 2 below summarizes the data that was acquired in the sound measurement testing when no one was seated in the chair assembly 10.
Referring to both the chair assemblies 10 and 110, a maximum level of sound (e.g., noise) emitted due to operation of each individual fan unit 58 of a given fan assembly may be no greater than about 60 dBA in some embodiments, no greater than about 50 dBA in other embodiments, no greater than about 45 dBA in still other embodiments, no greater than about 40 dBA in yet other embodiments, no greater than about 35 dBA in even other embodiments, and no greater than about 30 dBA in still yet other embodiments. In some embodiments, a maximum level of sound emitted due to operation of each fan unit 58 may be between about 20 dBA and about 50 dBA, or between about 25 dBA and about 45 dBA. Still other embodiments may have fan units 58 exhibiting maximum sounds levels of other appropriate magnitudes and/or ranges.
A fan assembly (e.g., 18 or 118) of a given chair assembly (e.g., 10 or 110) may provide any of a number of suitable airflow outputs. It may be preferred by some that airflow provided by a given fan assembly be such that a user can feel the same (e.g., realize a desired cooling effect) when sitting in a chair assembly. In some embodiments, the magnitude of desired airflow may have to be balanced against the noise produced by the fan assembly such that the resulting airflow can be maximized while minimizing background noise due to operation of the fan assembly. For instance, a maximum airflow output of a given fan assembly may be no more than about 350 cubic feet per minute (CFM) in some embodiments, no more than about 300 CFM in other embodiments, no more than about 250 CFM in still other embodiments, no more than about 200 CFM in yet other embodiments, no more than about 150 CFM in even other embodiments. In some embodiments, the maximum airflow output of a given fan assembly may be between about 150 CFM and about 325 CFM, or between about 175 CFM and about 300 CFM. The maximum airflow output of a given fan assembly may be no less than about 125 CFM in other embodiments. Still other embodiments may have fan assemblies exhibiting maximum airflow outputs of other appropriate magnitudes and/or ranges.
Again, referring to both the chair assemblies 10 and 110, a maximum airflow output of each fan unit 58 of a given fan assembly may be no more than about 70 CFM in some embodiments, no more than about 65 CFM in other embodiments, no more than about 60 CFM in still other embodiments, no more than about 55 CFM in yet other embodiments, no more than about 50 CFM in even other embodiments, and no more than about 45 CFM is still yet other embodiments. In other embodiments, the maximum airflow output of each fan unit 58 may be no more than about 40 CFM, no more than about 35 CFM, no more than about 30 CFM, or even no more than about 25 CFM. In some embodiments, the maximum airflow output of each fan unit 58 may be between about 20 CFM and about 60 CFM, or between about 25 CFM and about 55 CFM. Still other embodiments may have fan units 58 exhibiting maximum airflow outputs of other appropriate magnitudes and/or ranges.
With respect the chair assembly 210 of
In contrast to the fan assemblies 18 and 118 shown in previous embodiments, the fan assembly 218 of the chair assembly 210 includes a single, solitary fan unit 258. An example of one fan unit that could be employed by the fan assembly 218 is the EverCool EC12025M12C120 mm 73 CFM. Other embodiments may include other appropriate quantities or types of fan units (e.g., 2, 3, 4, or 5). The fan unit 258 of the fan assembly 218 has both an air intake 282 and an air output 284 such that air enters the fan unit 258 via the air intake 282 and exits the fan unit 258 via the air output 284. This enables air to flow through the fan assembly 218 in the general manner indicated by arrows AF9 and AF10 of
A housing 254 of the fan assembly 218 includes a vent 256 that is adjacent the fan unit 258 to allow air to enter the housing 254. While the illustrated fan assembly 218 includes a single, solitary vent 256, fan assemblies associated with other embodiments may include any other appropriate number of vents (e.g., 2, 3, 4, etc.). Further, while the vent 256 is shown as a plurality of arcuate slits in the housing 254 of the fan assembly 218, other embodiments may include vents of other appropriate designs/configurations.
The fan assembly 218 is powered using a rechargeable battery 272. As such, the housing 254 of the fan assembly 218 includes a battery compartment 274 designed to house the battery 272. An example of one battery that could be employed by the fan assembly 218 is the Power Sonic PS1227 2.9Ah. The battery compartment 274 includes a recess designed to accommodating the battery 272 and in which are appropriate contacts (not shown) for conveying power from the battery 272 to the fan unit 258. The battery compartment 274 also includes a cover 278 that can be attached to the housing 254 of the fan assembly 218 to occlude an opening into the recess of the battery compartment 274, thus inhibiting unintentional dissociation of the battery 272 from inside the battery compartment 274. This cover 278 can be attached to the housing 254 of the fan assembly 218 in any appropriate manner including, but not limited to, use of friction fit, mechanical fasteners, snap fittings, and the like. Other embodiments may exhibit other appropriate designs for the battery compartment 274 and/or its components.
On one side of the housing 254 of the fan assembly 218 are located a power switch 266, a fuse assembly 268, and a charging jack 270. The power switch 266 is shown as being a toggle switch but could be any other appropriate mechanism for turning the power to the fan unit 258 on and off. Further, the power switch 266 is preferably disposed on a side of the housing 254 so that a user of the chair assembly 210 can easily reach it while sitting on the chair assembly. That being said, other embodiments may include other appropriate locations for the power switch 266 (e.g., on a side of the housing 254 that includes the vent 256). The fuse assembly 268 generally houses a replaceable fuse (not shown) designed to protect the fan unit 258 from exposure to excessive electrical current. An example of an appropriate fuse and fuse assembly that could be used with the fan assembly 218 includes model 03440012X manufactured by Littelfuse Inc. of Chicago, Illinois. While the fuse assembly 266 is shown as being located on the same side of the housing 254 as the power switch 266, other embodiments may have a fuse assembly located in any of a number of appropriate locations on the housing 254. While not necessarily preferred, other embodiments may not include a fuse assembly. Turning to the charging jack 270, a battery charger (not shown) designed to deliver the appropriate charge can be plugged into the jack 270 and receive power from a standard AC electrical outlet (e.g., using an appropriate plug-in and cord of the charger) to charge the battery 272.
In use, electrical power is carried from an AC outlet via a cord through the charging jack 270 and delivered to the battery 272 via appropriate circuitry in the housing 254 of the fan assembly 218. Further, moving the power switch 266 from the “off” position to the “on” position causes a circuit between the battery 272 and the fan unit 258 to close, thus allowing power from the battery 272 to pass through the fuse assembly 268 and to the fan unit 258. Moving the power switch 266 from the “on” position to the “off position, causes the circuit between the battery 272 and the fan unit 258 to open, thus preventing power from the battery 272 to reach the various fan units 258.
The fan unit 258 includes a motor (not shown), a case (not shown), a propeller 262, and a central axis 264 about which the propeller 262 rotates. The propeller 262 of the fan unit 258 may be any of a number of appropriate sizes and include any number of appropriate fan blades. Referring specifically to
The case of the fan unit 258 may be any of a number of appropriate sizes. For instance, some fan units tend to be distributed by manufacturers based on standard dimensional sizes of the various cases in which the other fan components are housed. In particular, the cases of many fan units have a length and a height that are substantially equal, and a thickness that tends to be less than each of the length and the width. Since the dimensions of the length and height for the cases of many fan units are generally equal, a fan unit of a given size (e.g., an 80 mm fan, a 92 mm fan, or a 120 mm fan) generally refers to the dimensional height and length of the case for that particular fan unit. The fan unit 258 may be a 92 mm fan in some embodiments, a 120 mm fan in other embodiments, or an even bigger fan in yet other embodiments.
The chair assembly 210 of
The airflow guide 220 is substantially constructed of a pliable material that is substantially impermeable to airflow (e.g., coated fabric or closed weave fabric of natural or synthetic materials). Thus, it is generally preferred that substantially all airflow entering the airflow chamber 286 of the chair assembly 210 by way of the fan assembly 218 be required to exit the airflow chamber 286 by passing through the seat 212 (e.g., as shown by arrows AF11, AF12, AF13). This pliability of the airflow guide 220 enables the fan assembly 218 to be spaced from the bottom side 32 of the seat 212 by a first distance D5 (
The chair assemblies 10, 110, and 210 may be characterized as being portable (e.g., capable of being moved and/or carried with ease by a user). In addition, the chair assemblies 10, 110, and 210 may be characterized as being collapsible (e.g., capable of being moved between an open condition and a closed condition). As shown in
The chair assembly 210 may be said to be movable between an open condition (shown in
A chair assembly (e.g., 10, 110, 210) may exhibit any appropriate weight. In some embodiments, it may be desirable for the chair assembly not to exceed a certain weight threshold. For instance, in the case where a chair assembly is designed to be portable, the weight of the chair assembly may be such that the chair assembly can be moved and/or carried with ease. As such, the chair assembly may have a maximum weight of no more than about 8 pounds (lbs.) in some embodiments, no more than about 7 lbs. in other embodiments, no more than about 6 lbs. in still other embodiments, and no more than about 5 lbs. in yet other embodiments. In some embodiments, the chair assembly may have a maximum weight of between about 3 lbs. and about 8 lbs. (e.g., between about 5 lbs. and about 7 lbs.). Other embodiments may have chair assemblies exhibiting maximum weights of other appropriate magnitudes and/or ranges.
In the case that a chair assembly (e.g., 10, 110, 210) of the invention is designed to be portable, the chair assembly may be equipped with one or more components designed to facilitate carrying and/or transport of the chair assembly. For instance, a chair assembly may include a handle specifically designed to enable a user to lift and/or carry the same thereby (e.g., when the chair assembly is in the closed condition). As another example, a chair assembly may be equipped with a shoulder strap or the like specifically designed to enable a user to support the weight of the chair assembly using one's shoulder(s) (e,g., when the chair assembly is in the closed condition).
Other embodiments of chair assemblies may include combinations of the features shown with regard to the chair assemblies 10, 110, and 210. For instance, one “hybrid” or “combined” embodiment may include (in addition to the frame 16) the backrest 14, fan assembly 18, and airflow guide 20 of the chair assembly 10, and (instead of the seat 12) also include the seat 112, fan assembly 118, and airflow guide 120 of the chair assembly 110. Another “hybrid” or “combined” embodiment may include (in addition to the frame 16) the backrest 14, fan assembly 18, and airflow guide 20 of the chair assembly 10, and (instead of the seat 12) also include the seat 212, fan assembly 218, and airflow guide 220 of the chair assembly 210. As such, each of these “hybrid” or “combined” embodiments would have a first fan assembly associated the seat and a second fan assembly associated with the backrest.
While the chair assemblies shown in the figures herein may be characterized by some as folding chairs, lawn chairs, deck chairs, and/or patio chairs, principles of the invention described herein are also applicable to any chair assembly such as, but not limited to, those listed above as well as, for example, chase lounge chairs, office chairs, wheel chairs, infant strollers, automobile seats, aircraft seats, and portable stadium chairs (e.g., designed to be supported by and/or release* attached to bleachers).
When introducing elements of the present invention (e.g., illustrated embodiments(s) thereof), the articles “a”, “an”, “the” and “said” are intended to mean that there are one or more of the elements. Accordingly, any feature that is intended to be limited to a “singular” context or the like will be clearly set forth herein by terms such as “only,” “single,” “limited to,” or the like. Merely introducing a feature in accordance with commonly accepted antecedent basis practice does not limit the corresponding feature to the singular (e.g., indicating that a chair assembly includes “a fan assembly” by itself does not mean that the chair assembly includes only a single fan assembly). Moreover, any failure to use phrases such as “at least one” also does not limit the corresponding feature to the singular (e.g., indicating that a chair assembly includes “a fan assembly” alone does not mean that the chair assembly includes only a single fan assembly). Finally, use of the phrase “at least generally” or the like in relation to a particular feature encompasses the corresponding characteristic and insubstantial variations thereof (e.g., indicating that an air flow chamber is at least generally tapered encompasses the air flow chamber being tapered as well as insubstantial variations thereof). The terms “comprising,” “including,” “having,” and variations thereof are intended to be inclusive and mean that there may be additional elements other than the listed elements. Further, all numerical ranges disclosed herein are intended to be inclusive. For example, a range of “between 40 dBA and 65 dBA” or “40-65 dBA” is meant to include 40 dBA, 65 dBA, and all values in between.
The foregoing has been presented for purposes of illustration and description, and is not intended to limit the invention to the form disclosed herein. Consequently, variations and modifications commensurate with the above teachings, and skill and knowledge of the relevant art, are within the scope of the present invention. The embodiments described hereinabove are intended to enable others skilled in the art to understand the invention in such or other embodiments and with various modifications required by the particular application(s) or use(s) of the present invention. It is intended that the appended claims be construed to include alternative embodiments to the extent permitted by the prior art.
This application claims priority to U.S. provisional application Ser. No. b 61/553,320 filed on 31 Oct. 2011 and entitled “Fan-Equipped Chair Assembly”, which is hereby incorporated by reference in its entirety.
| Number | Date | Country | |
|---|---|---|---|
| 61553320 | Oct 2011 | US |
