The present invention relates generally to portable seats, such as turkey seats or stadium seats, and, in particular, to portable seats that employ a memory foam cushion for improved comfort and performance.
Portable seats are used in a variety of environments, such as hunting and in stadiums. Typically, the portable seats include a seat panel and a backrest. The seat panel may be connected to the backrest by means of a strap or other support such that, when the user is seated on the seat, he can lean against the backrest to get some degree of back support.
This case of a turkey seat is illustrative. Turkey seats are used by hunters, for example, in connection with hunting wild birds. In this context, the hunter may be required to wait a substantial period of time for a good hunting opportunity. Of course, it is desirable to be able to remain comfortably seated while waiting. Moreover, if the hunter is comfortable, movement may be reduced, increasing the chances that the hunter will avoid detection and enhancing the chances for success.
When a hunting opportunity arises, it is desirable to use the turkey seat so as to remain steady for a shot. In particular, a solid back support assists in this regard. It is also desirable that the turkey seat be quickly and quietly deployable, again, so as to avoid detection at critical junctures.
Because portable seats are often used in environments such as in connection with hunting, as discussed above, or at a stadium, it is desirable that the seats be compact and lightweight. In particular, in contexts as described above, the user is often carrying a variety of additional gear at the same time as he is carrying the portable seat, and all of these materials may be carried a substantial distance. For example, portable seats may be formed with a collapsible aluminum frame. In such cases, the seat and backrest may be formed from nylon panels attached to the frame.
In at least one case, a turkey seat has been incorporated into a hunting vest. In this case, the seat is formed from a substantially unpadded flip-out nylon panel. During transport, the nylon panel can be folded up against the back of the vest and secured in place. When it is desired to use the seat, the panel flips out and can be secured to a back portion of the vest by way of nylon straps. In this manner, the back portion of the vest serves as an effective backrest.
The present invention is directed to a portable seat including memory foam padding, at least in the seat portion of the product. As is known, memory foam is made from polyurethane treated to, increase its viscosity level and density. Such memory foam can come in a variety of densities. Higher density memory foam is sensitive to body heat and molds itself to the shape of a warm body in a few minutes. Lower density memory foam is pressure sensitive and molds more quickly to the shape of a body. In either case, an important property of the memory foam is that it molds to the shape of a body pressed against it, such that the pressure is distributed more evenly over the foam surface, thereby potentially allowing for greater comfort.
Because memory foam is denser than other foams and, therefore, heavier, its uses have been limited. For example, memory foam, or visco-elastic memory foam, has been used in certain medical applications, such as wheelchair seat cushions. In addition, memory foam has been used in certain mattresses, pillows and mattress pads. Memory foam has generally not been viewed as a suitable material for portable products to be carried by a user.
The present inventor has recognized that, despite its density and weight, memory foam yields significant advantages in the context of portable seats. In particular, by utilizing memory foam only in a small area, such as the cushion portion of a portable seat, the overall weight of the device can be kept within acceptable limits. The issue of weight can further be addressed by careful selection of the density, thickness and other dimensions of the cushion. On the other hand, memory foam provides superior comfort and thermal insulation yielding substantial advantages. For example, in the case of the turkey seat, this results in improved comfort, which, in turn, allows the hunter to remain motionless for longer periods of time so as to better avoid detection. In addition, the memory foam, because it molds to the contours of the user, provides rock-solid stability when the hunter takes a shot.
In accordance with one aspect of the present invention, a cushion of a portable seat is formed from multiple layers including at least one memory foam layer. As noted above, memory foam has desirable characteristics for portable seat applications but can also be relatively heavy. In addition, for certain users and under certain conditions, e.g., when the portable seat is used on a hot stadium bench or otherwise in hot conditions, the memory foam can become quite thin or substantially “bottom out” in certain areas. Accordingly, it has been recognized that a multiple layer construction may be desirable so as to accommodate a variety of users and use conditions. For example, the cushion may include a memory foam layer and at least one additional non-memory foam layer. In one implementation, a three-layer design is used including a memory foam layer, an open cell foam layer and a closed cell foam layer. The memory foam layer is disposed at a top portion of the cushion for more direct contact with the user, the closed cell is disposed at a bottom portion of the cushion, and the open cell foam is disposed in between. In this manner, the memory foam provides good user conformance and load spreading, the open cell foam material provides good cushioning for a range of users, and the closed cell material is durable and ensures significant cushioning for substantially any user under substantially any conditions.
In a preferred implementation, the memory foam turkey seat can be incorporated into a hunting vest design. The memory foam cushion is movable between a stowed position against the back of the vest and a deployed position where the memory foam cushion extends from the vest at an angle suitable for use as a seat. The cushion panel can be connected to the vest by means of nylon straps and the like, such that the back of the vest functions as a backrest when the hunter is seated on the cushion. It will be appreciated that, in this manner, any additional weight of the seat due to the memory foam construction is of little concern as the weight is supported by the vest, which, in effect, functions as a backpack. Accordingly, the advantages of memory foam as noted above are realized without a problematic penalty due to the density of the memory foam.
For a more complete understanding of the present invention and further advantages thereof, reference is now made to the following detailed description taken in conjunction with the drawings, in which:
In the following description, the invention is set forth in the context of a hunting vest with a deployable seat cushion. The deployable seat cushion is formed from multiple layers of material including a memory foam layer. While this is believed to be a particularly advantageous implementation of the invention, it will be appreciated that the invention is not limited to this implementation. The hunting vest garment and seat deployment mechanisms will first be described in the following description. Thereafter, the memory seat cushion structure is described in greater detail.
One embodiment of a garment assembly is illustrated in
The deployable seat 22 includes a top or upper surface 26, a bottom or lower surface 30, a pair of side or side surfaces 34, a front or front surface 38, and a rear or rear surface 42. The seat 22 may be of any appropriate size, shape, and/or configuration, and may incorporate any appropriate supporting material or combination of supporting materials. Moreover, any desirable properties may be incorporated/utilized by any of the surfaces 26, 30, 34, 38, 42 (e.g., the bottom or lower surface 30 of the seat 22 may be waterproof; the entire exterior of the seat 22 may be waterproof; exterior surfaces may be formed from camouflage, black, bright orange and/or other colors as desired for hunting or other applications).
A pair of lower strap assemblies or hinging strap assemblies 48 interconnect the garment 14 and the seat 22, and may facilitate the deployment of the seat 22 in a manner that will be discussed in more detail below. Each lower strap assembly 48 may include a buckle 52 (
The garment assembly 10 further includes a pair of upper strap sections 56 that each interconnect with the garment 14 and that each at least interface or interact with the seat 22. In the illustrated embodiment, the upper strap sections 56 are actually part of a single strap that extends through the interior of the seat 22 via a side-to-side aperture 44 (
Each upper strap section 56 also interfaces with the seat 22 at a pair of laterally spaced locations, or along each of the two sides 34 of the seat 22 as noted. In the illustrated embodiment where the upper strap sections 56 are part of a common strap, the upper strap sections 56 are not actually fixed to the seat 22 as noted. However and once again, it should be appreciated that the upper strap sections 56 could indeed be separate structures, with one portion (e.g., one end) of each such upper strap section 56 being appropriately fixed to the garment 14 and with another portion (e.g., the opposite end) of each such upper strap section 56 being appropriately fixed to the seat 22 in any appropriate manner.
The upper strap sections 56 of the garment assembly 10 facilitate deployment of the seat 22, and notably without having to disconnect the seat 22 from the garment 14 of the garment assembly 10 in any manner. In this regard, the upper strap sections 56 are each able to extend or stretch (i.e., increase in length) some time during deployment of the seat 22. More specifically, each upper strap section 56 extends or stretches (i.e., increases in length) during the initial portion of the deployment of the seat 22, and thereafter may contract (i.e., decreases in length) during a subsequent portion of the deployment of the seat 22. Preferably, each upper strap section 56 is formed from an appropriate elastic or other appropriate resilient material, such that each upper strap section 56 may extend or stretch when exposed to an appropriate force, and thereafter uses stored internal energy or the like to contract or retract to at least some degree upon experiencing at least a certain reduction of this force (including via a pure elastic deformation, where each upper strap section 56 would move back to its undeformed state once a load is totally removed).
With the seat 22 being in the stowed position of
In order to move the seat 22 from the stowed position of
In the
The above-described motion of the seat 22 during its deployment in effect inverts or flips the seat 22. Recall that in the
The garment assembly 10 with its deployable seat 22 offers a number of advantages. One is that the user does not have to “unlock” or “unlatch” any buckles to move the seat 22 from the stowed position (e.g.,
As discussed above, the deployable seat may be formed from a multiple layer cushion, including at least one memory foam layer.
In the illustrated embodiment, the uppermost layer 102 is formed from a memory foam material so as to conform to the contours of the user and provide the desired cushioning/load spreading properties. However, for certain users or under certain conditions, such a memory foam material may become thin in some areas or substantially “bottom out.” Accordingly, in the illustrated embodiment, the cushion 100 further includes an intermediate layer 104 formed from a cushioning non-memory foam material. It will be appreciated that this material also allows for construction of a lightweight cushion 100, as may be desired and provides some thermal insulation of the uppermost layer 102 (which may have temperature dependent characteristics) from the ground, a stadium seat or the like. For example, the intermediate layer 104 may be formed from a relatively soft open cell foam material.
The illustrated cushion 100 further includes a lowermost layer 106 formed from, for example, a denser and more durable (in relation to the intermediate layer 104) cushioning material. In the illustrated embodiment, the lowermost layer 106 is formed from a closed cell foam. It will be appreciated that this layer 106 further ensures the significant cushioning for substantially any user under substantially any condition.
The cushion 100 is dimensioned so as to provide adequate seat cushioning. For example, the cushion 100 may have a width of between about 9″-18″ and a front to back depth of between about 6″-12″. Larger sizes may be used for increased comfort or to accommodate larger users. Smaller sizes may be used for smaller users (e.g., children) or to reduce overall weight. The thicknesses of the layers 102, 104 and 106 are indicated by the arrows x, y and z respectively. These thicknesses are selected together with the cushioning properties of the various materials (e.g., durometer values) to provide adequate cushioning for the desired application or expected range of users and applications. In the illustrated embodiment, the uppermost and intermediate layers 102 and 104 each have an uncompressed thickness (x and y) of between about 1″-2″, for example, 1.25″. The lowermost layer 106 has a thickness z of between about ¼″-1″, for example, ½″. However, it would be appreciated that different layers and thicknesses may be utilized in accordance with the present invention. The noted materials and thicknesses have been found to provide good cushioning for a range of users across a range of conditions while providing a cushion weight that is not unduly heavy.
Although the invention has been described with respect to a particular vest/deployable seat combination, it will be appreciated that memory foam may be incorporated into other types of portable seats, including hand carried stadium-style seats. In addition, although the memory foam seat has been disclosed in context where it is connected to a backrest by way of straps, it will be appreciated that memory foam may be used in connection with portable seats having a rigid frame, for example, formed from aluminum. Also, significant advantages associated with the memory foam construction may be achieved even without the use of a backrest.
The foregoing description of the present invention has been presented for purposes of illustration and description. Furthermore, the description 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 further intended to explain best modes known of practicing the invention and to enable others skilled in the art to utilize 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 under 35 U.S.C. 119 to U.S. Provisional Application No. 60/866,158, entitled, “TURKEY SEAT WITH MEMORY FOAM,” filed on Nov. 16, 2006, the contents of which are incorporated herein as if set forth in full.
Number | Date | Country | |
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60866158 | Nov 2006 | US |