Patent Grant
10799407
This disclosure relates to adjustable person support systems. More particularly, but not exclusively, one contemplated embodiment relates to a person support apparatus and mattress configurable to increase and decrease in length and/or width to accommodate a person supported thereon. While various length and/or width adjusting person support systems have been developed, there is still room for improvement. Thus, a need persists for further contributions in this area of technology.
A system for changing the width of a person support apparatus includes a bed controller for receiving a command signal indicating a command for width alteration, a first motor controlled by the bed controller for driving an extension of a first deck section of the support apparatus thereby altering the width of the first deck section, and a second motor controlled by the bed controller for driving an extension of a second deck section of the support apparatus thereby altering the width of the second deck section. The bed controller controls the first motor and the second motor in a manner that causes the first deck section to reach a first deck section width alteration limit at a first time and the second deck section to reach a second deck section width alteration limit at a second time, wherein the first time and the second time are not equal.
Another contemplated embodiment includes a person support system, comprising: a person support apparatus including at least one of a width and length extension assembly; a person support surface configured to be supported on the person support apparatus and including at least one of a length and width extension assembly; a controller configured to cause at least one of the width and length extension assembly of the person support apparatus and the person support surface to move in response to an input from a user, wherein the at least one of the length and width extension assembly for the person support surface will remain in a retracted position unless the corresponding one of the at least one of the width and length extension assembly of the person support apparatus is positioned in one of a fully retracted position and a fully extended position.
Another contemplated embodiment includes a person support system, comprising: a person support apparatus including a first size adjusting assembly; a person support surface configured to be supported on the person support apparatus and including a second size adjusting assembly; a controller configured to cause at least one of the first size adjusting assembly of the person support apparatus and the second size adjusting assembly of the person support surface to change the size thereof in response to an input from a user, wherein the size adjusting assembly for the person support surface will remain in a retracted position unless the corresponding size adjusting assembly of the person support apparatus is in one of a fully retracted position and a fully extended position.
Additional features, which alone or in combination with any other feature(s), such as those listed above and/or those listed in the claims, may comprise patentable subject matter and will become apparent to those skilled in the art upon consideration of the following detailed description of various embodiments exemplifying the best mode of carrying out the embodiments as presently perceived.
The accompanying drawings incorporated in and forming a part of the specification illustrate several aspects of the claimed subject matter and, together with the description, serve to explain the principles of the claimed subject matter. In the drawings:
The embodiments of the claimed subject matter and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments and examples that are described and/or illustrated in the accompanying drawings and detailed in the following description. It should be noted that the features illustrated in the drawings are not necessarily drawn to scale, and features of one embodiment may be employed with other embodiments as the skilled artisan would recognize, even if not explicitly stated herein. Descriptions of well-known components and processing techniques may be briefly mentioned or omitted so as to not unnecessarily obscure the embodiments of the claimed subject matter described. The examples used herein are intended merely to facilitate an understanding of ways in which the claimed subject matter may be practiced and to further enable those of skill in the art to practice the embodiments of the claimed subject matter described herein. Accordingly, the examples and embodiments herein are merely illustrative and should not be construed as limiting the scope of the claimed subject matter, which is defined solely by the appended claims and applicable law. Moreover, it is noted that like reference numerals represent similar parts throughout the several views of the drawings. It is understood that the subject matter claimed is not limited to the particular methodology, protocols, devices, apparatus, materials, applications, etc., described herein, as these may vary. It is also to be understood that the terminology used herein is used for the purpose of describing particular embodiments only, and is not intended to limit the scope of the claimed subject matter. Unless defined otherwise, all technical and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the art.
A variable width person support system 100 according to one contemplated embodiment is shown in
The person support apparatus 110 comprises a lower frame 116, an upper frame 118 movably supported above a lower frame 116 by supports (not shown) coupled to the lower frame 116, a head board 120 at the head end 124 of the person support apparatus 110, and a foot board 122 at the foot end 126 of the person support apparatus 110 as shown in
The deck sections 132 are movably coupled to the upper frame base 130 and are configured to be articulated with respect to one another and the upper frame base 130 between a number of configurations including a substantially co-planar configuration, a reclined configuration, a chair configuration, and various other configurations. The deck sections 132 include an upper body deck section 140, seat deck section 142, thigh deck section 144 and foot deck section 146 as shown in
In one contemplated embodiment, a user can choose to extend/retract the deck extensions 134 using a powered extension/retraction system 156 by providing an input to the control system 114 or to manually extend/retract the deck extensions 134 by actuating a manual release assembly 158 to disengage the deck extension 134 from the powered extension/retraction system 156. The powered extension/retraction system 156 includes lead screws 160 rotatably coupled to the deck sections 132 and configured to be rotated by motors 162. In one contemplated embodiment, the seat, thigh, and foot deck extensions 150, 152, and 154 are connected together and a single motor 162 and lead screw 160 are used to extend/retract them as shown in
The manual release assembly 158 includes a separable threaded clasp 164, a clasp separator 166, a cable 168, and a handle 170 as shown in
The second clasp member 174 is secured to the deck extension 134 and includes a main body portion 198, a first guide 200 protruding from the bottom of the main body portion 198, a guide slot 190 recessed along the top of the main body portion 198, and a receiving portion 202 as shown in
The clasp separator 166 is rotatably coupled to the deck extension frame 188 and is configured to move the first clasp member 172 with respect to the deck extension frame 188 and the second clasp member 174 as the clasp separator 166 is rotated as shown in
The handle 170 is pivotably coupled to the deck extension frame 188 such that it can be easily accessed by a user as shown in
The mattress 112 includes a mattress core 214 and mattress side bolsters 216 on either side of the mattress core 214, and a cover 218 enclosing the mattress core 214 and side bolsters 216 as shown in
The fluid bladders 220 are in fluid communication with a fluid supply system 222 configured to supply fluid to inflate the bladders 220, or create a vacuum to deflate the bladders 220. In one contemplated embodiment, the fluid supply system 222 is configured to inflate/deflated the fluid bladders 220 in the mattress side bolsters 216 in response to the control system 114 sensing an increase/decrease in the width of the person support apparatus 110 or receiving an input from a user indicating a desire for the width of the person support apparatus 110 or the mattress 112 to be increased/decreased. The fluid supply system 222 includes a fluid supply or gas blower 224 that is connected to the fluid bladders 220 by hoses 226. In some contemplated embodiments, the fluid supply 224 may be a compressor or a pump. The fluid supply 224 is contained within a mattress control box 228 that is hung from the footboard 122.
The control system 114 shown in
The bed sensors 234 are configured to sense characteristics of the bed components, such as, the position of the deck extensions 134 (fully extended/retracted), the position of the siderail 138 (deployed/storage), and the orientation of the deck sections 132. The bed sensors 234 can include potentiometers, limit switches, hall-effect sensors, or other similar sensing devices and techniques. The bed sensors 234 can be coupled to the extensions 134 and/or the motors 162 or sense the position of the deck extensions 134 with respect to the deck sections 132. In one contemplated embodiment, potentiometers are mounted on the shafts of the motors 162 to sense the motion of the deck extensions 134 and allow the bed controller 230 to track the position of the extensions 134. In some contemplated embodiments, the sensors 234 also include force sensors, pressure sensors, and other sensors configured to sense characteristics and statuses of other systems and components of the person support apparatus 110.
The bed control interface 232 shown in
The mattress control interface 238, as shown in
The mattress controller 236 is configured to control the fluid supply system 222 in response to a user input provided via the mattress control interface 238 (or via the bed control interface 232 when the mattress controller 236 and the bed controller 230 are in communication with one another). The mattress controller 236 includes a mattress controller processor 252 and mattress controller memory 254 as shown in
The mattress sensors 240 are configured to sense various characteristics of the mattress components, such as, the fluid pressure within the side bolsters 216 (fully extended/retracted), and to provide the sensed information to the mattress controller 236. In one contemplated embodiment, the mattress sensors 240 include pressure transducers that are configured to provide a signal indicative of the pressure inside the side bolsters 216 so that the mattress controller 236 can determine the inflation level of the side bolsters 216 (i.e., when they are fully deflated or fully inflated or partially inflated). In other contemplated embodiments, the mattress sensors 240 include temperature sensors, moisture sensors, force sensors, and other sensors, coupled to the mattress 112 to sense characteristics of the mattress 112, the fluid bladders 220, and/or the person positioned on the mattress 112. When the deck extensions 134 are retracted manually, the side rails 138 apply pressure on the side bolsters 216 as a user pushes the siderail 138 against the mattress 112, which causes a signal from the pressure transducer 240 to indicate a spike in pressure. If the mattress controller 236 determines that the spike is greater than a predetermined threshold, then the mattress controller 236 causes the fluid supply 224 to initiate deflation of the side bolsters 216.
The mattress controller 236 and the bed controller 230 are configured to communicate with one another to affect the extension/retraction of the deck extensions 134 and side bolsters 216. In some contemplated embodiments, the mattress controller 236 is configured to use the bed controller 230 as a communication hub to communicate information about the mattress 112 to caregivers via nurse call systems, to electronic medical record systems, and to other devices and systems. In the case of a mattress replacement system, the mattress controller 236 is in electrical communication with the bed controller 230 via a wired or wireless connection. In one contemplated embodiment, the mattress controller 236 communicates alarm signals to the bed controller 230 so that, instead of an alarm on the control box 228 being activated to alert people in or near the patient's room, a remote caregiver can be notified by the nurse call system of the alert. In other contemplated embodiments, the mattress controller 236 can communicate patient position information, therapy history (which can be used for compliance tracking), cushion pressures (which can indicate a fluid supply 32 issue or a leak), and/or other information about the mattress 16 or patient positioned thereon to a caregiver over a nurse call system or other caregiver alert system, an electronic medical record system, or the person support apparatus 110 or other medical devices in communication with the person support apparatus 110.
In one contemplated embodiment, when the mattress controller 236 is in electrical communication with the bed controller 230, the mattress control interface 238 on the control box 228 is disabled and the bed control interface 232 is used to control the functions of both the person support apparatus 210 and the mattress 112. In some contemplated embodiments, the mattress control interface 238 on the control box 228 does not display any information when it is deactivated. In another contemplated embodiment, the mattress control interface 238 can display information and/or errors, but control functions are locked out so that the user cannot control the operation of the mattress 112 from it. In some contemplated embodiments, the bed control interface 232 could be locked out instead of the mattress control interface 238. In some contemplated embodiments, the controls for inflating/deflating the side bolsters 216 from the bed control interface 232 and the mattress control interface 238 are disabled since the function is controlled as part of the width adjustment algorithm.
The mattress controller 236 and bed controller 230 periodically exchange a status signal to determine if they are connected. When communication between the bed controller 230 and the mattress controller 236 is interrupted, the mattress control interface 238 on the control box 228 is enabled (or re-activated) and allows the user to control the operation of the mattress 112. In some contemplated embodiments, visual and/or audible indicators are used to indicate when communication between the bed controller 230 and the mattress controller 236 is lost or interrupted; the loss of communication is sensed as an event, not a status. In another contemplated embodiment, when communication between the bed controller 230 and the mattress controller 236 is interrupted, the side bolsters 216 are deflated and retracted. A user may, subsequently, extend the side bolsters 216 to a desired position by pressing the corresponding button 258 on the mattress control interface 238. In another contemplated embodiment when communication between the bed controller 230 and the mattress controller 236 is lost, the deck extension/retraction function is locked out to prevent the user from using the powered extension/retraction system 156 to retract the deck section 134 and the mattress controller 236 maintains the mattress 112 in the state it was in prior to the mattress controller 236 losing communication with the bed controller 230.
In operation, the bed controller 230 and mattress controller 236 determine whether they are connected and, if so, the mattress controller 236 disables the mattress control interface 238 and routes all mattress control functions to the bed control interface 232. When the bed control interface 232 receives input indicative of a user's desire to increase or decrease the width of the person support apparatus 110 and mattress 112, the bed controller 230 activates the powered extension/retraction system 156 on the person support apparatus 110 to move the deck extensions 134 in the desired manner, and provides the mattress controller 236 with the information corresponding to the user's desired action. The mattress controller 236 uses the information from the bed controller 230 to control the operation of the fluid supply 224 to inflate/deflate the side bolsters 216. If the user does not fully extend or retract the deck extensions 134, the bed controller 230 sends a signal to the mattress controller 236 and the mattress controller 236 causes the side bolsters 216 to deflate and retract (or to maintain the fully retracted position). The user can manually override the deflation/retraction of the side bolsters 216 by controlling the mattress 112 directly through the mattress control interface 238. In some contemplated embodiments, if communication between the controllers is interrupted at any time, the side bolsters 216 are deflated and retracted.
A flow chart 260 of a method of monitoring the connection between the bed controller 230 and the mattress controller 236 according to one contemplated embodiment is shown in
If the controllers are in communication, then the mattress control interface 238 is disabled (or at least the function control buttons are deactivated while information and alerts are still able to be displayed) and the mattress 112 is controlled through the bed control interface 232 at step 266. The controllers return to monitoring the status of the connection between them in operation 268 to determine if communications between the controllers is interrupted. If the communication between the controllers is not interrupted, the mattress control interface 238 remains disabled and the mattress 112 continues to be controlled through the bed control interface 232 at step 270, and the controllers return to monitoring the status of the communication connection at operation 268. In one contemplated embodiment, if the communication is interrupted, then a visual and/or audible alert is generated to indicate that communications have been interrupted between the controllers at operation 272, the mattress controller 238 maintains the status of the mattress 112 just prior to communication between the controllers being interrupted, and the bed controller 230 disables the powered width expansion function at operation 274 before proceeding to operation 264. In another contemplated embodiment, if communication is interrupted, a visual and/or audible alert is generated to indicate that communications have been interrupted between the controllers and the mattress controller 236 retracts the side bolsters 216 by deflating them before proceeding to operation 264.
A flowchart 276 of a method of decreasing and increasing the width of a person support apparatus 110 according to one contemplated embodiment is shown in
During actuation of the deck extensions 134, the bed controller 230 determines whether the deck extensions 134 are staggered in operation 298. In one contemplated embodiment, the bed controller 230 can determine whether the deck extensions 134 are staggered based on information sensed by the bed sensors 234 (for example, in one embodiment the bed sensors 234 include limit switches, while in another embodiment the bed sensor 234 include a potentiometer coupled to the motors 162 which the controller 230 can use to calculate the positions of the extensions 134). In another contemplated embodiment, the bed controller 230 can determine whether the deck extensions 134 are staggered by examining whether the motors 162 are synchronized where actuation of one extension 134 was delayed when compared the other extension 134. Staggering of the deck sections 134 can be achieved a number of ways. In one contemplated embodiment, the upper body deck extension 148 is retracted at faster speed than the lower body deck sections 150, 152, and 154, and extended at a slower speed than the lower body deck sections 150, 152, and 154 to stagger the extensions 134 such that the siderails 138 coupled thereto are not co-planar until the extensions 134 are fully extended. In another contemplated embodiment, the lower body deck extension 150, 152, and 154 and the upper body deck extension 148 are extended/retracted at substantially the same speed, but retraction of the lower body deck extensions 150, 152, and 154 are started a predetermined amount of time after retraction of the upper body deck extension 148, and extension of the lower body deck extensions 150, 152, and 154 are started at a predetermined time before extension of the upper body deck extension 148. Staggering the movement of the deck sections 134 helps to prevent potential interferences between the siderails 138 coupled to the deck sections 134 when the person support apparatus 110 is articulated.
The bed controller 230 monitors whether the end of travel indicative of complete retraction of deck extensions 134 has been reached based on signals from the potentiometer and/or current readings from the motors 162 in operation 300. In one contemplated embodiment, each extension 134 is extended/retracted to its limit irrespective of the staggering of the extensions 134. In another contemplated embodiment, the extensions 134 are extended/retracted until the first extension 134 reaches its limit, which maintains the extensions 134 in a staggered state. If the bed controller 230 determines complete extension/retraction of the deck extensions 134 has been reached, the bed controller 230 sends a signal to the motors 162 to stop actuation. If the bed controller 230 determines that the deck extensions 134 have not been completely extended/retracted upon the occurrence of a condition, the bed controller 230 can cause the person support apparatus 110 or mattress 112 to perform or lock out various functions. In one contemplated embodiment, the conditions include the user releasing the button 248 prior to the extensions 134 being fully extended/retracted, a bed power cord being unplugged, or the person support apparatus 110 being powered by a battery system (in one contemplated embodiment, the mattress controller 236 and fluid supply 224 are not powered by the person support apparatus 110 battery and the side bolsters 216 cannot be deflated or inflated when the person support apparatus 110 is running on the battery). When one of the aforementioned conditions occur it can cause the bed controller 230 to lock out articulation of the deck sections 132, generate an audible alarm, and/or flash an amber colored light 250 on the bed control interface 232. The bed controller 230 is also configured to generate fault codes for display on the bed control interface 232 or using diagnostic LEDs when, for example, the extension and retraction limits are not reached within a predetermined time, movement of the extension 134 is not sensed after the bed controller 230 sends a signal to the motor 162 to extend/retract the extension 134, the motor 162 is disconnected from the circuit, the bed sensors 234 or mattress sensors 240 signals are outside of an expected range, or the extend and retract limits are simultaneously met. When the fault codes are generated, the bed controller 230 can lock out the width expansion function and/or generate an audible alert or flash the light 250 to alert the user. In some contemplated embodiments, the sensors 234 and 240 are monitored real time and the position of each extension 134 is calculated at all times whether moving or stationary. In this embodiment, if the deck extensions 134 are not extended/retracted completely, the control system 114 determines whether the extensions 134 are substantially aligned. If they are not, then articulation of the deck sections 132 is prevented (specifically raising the upper body deck section 140 is prevented).
At operation 302, a determination is made by the bed controller 230 as to whether the deck extensions 134 are completely retracted. In one contemplated embodiment, if the deck extensions 134 are not completely extended or retracted, then the bed controller 230 generates an audible and/or visual alert and disables articulation of the deck sections 132. In this embodiment, raising the upper body deck section 140 can be disabled while lowering the upper body deck section 140 can still enabled. In another contemplated embodiment, if the deck extensions 134 are not completely extended or retracted, then the bed controller 230 sends a signal to the mattress controller 236 to cause the side bolsters 216 to retract. If the deck extensions 134 are completely retracted, the bed controller 230 checks to determine whether extension button 248E is selected at operation 306. If the bed controller 230 determines that the extension button 248E is selected, it sends a signal to upper body deck width motor 162 and lower body deck width motor 162 to begin extending the deck extensions 134; the bed controller 230 monitors actuation of the deck extensions 134 in operation 308. During actuation of the deck extensions 134, the bed controller 230 determines whether the deck extensions 134 are staggered in operation 310. If the bed controller 230 determines that the deck extensions 134 are not staggered, it sends a signal to the control interface 232 to display an error message. In some contemplated embodiments, the controller 230 can modify the speed at which the motors 162 are extending or retracting the extensions 134 to generate the desired stagger. If the bed controller 230 determines that the deck extensions 134 are staggered, the bed controller 230 monitors whether the end of travel indicative of complete extension has been reached based on signals from the potentiometer 234 and/or current readings from the motors 162 in operation 144. If the bed controller 230 determines that complete extension of each deck extension 134 has been reached, the bed controller 230 sends a signal to the motors 162 to stop actuation. If the bed controller 230 determines that the deck extensions 134 have not been completely extended, the bed controller 230 continues to monitor whether the motors 162 are staggered in step 310.
In operation 312 if it is determined by the bed controller 230 that the deck extensions 134 are completely extended, the bed controller senses selection of the extension button 248E in operation 314 after which the system waits for a predetermined time, in one embodiment 2 seconds, in other embodiments, any amount of time in operation 316. The bed controller 230 sends a signal to the mattress controller 236 to inflate the mattress side bolsters 216 in operation 318. Mattress controller 236 monitors inflation of the mattress side bolsters 216 in operation 320. Mattress controller 236 determines if the mattress side bolsters 216 are completely inflated in operation 322. In one embodiment the mattress controller 236 makes this determination by comparing a pressure derived from the signal supplied by pressure transducer 240 with a predetermined threshold which in one embodiment may be defined by a user though control interface 232. In another embodiment the mattress controller 236 determines if the mattress side bolsters 216 are completely inflated by tracking the time spent inflating the mattress side bolsters 216. In operation 322 if the mattress controller 236 determines the mattress side bolsters 216 are not completely inflated, it sends a corresponding signal to the bed controller 230. The bed controller 230 sends a signal to the control interface 232 through which an audio indication and/or a visual indication on display 246 of ongoing mattress side bolster 216 inflation is communicated in operation 324. If mattress controller 236 determines that inflation is complete it communicates with the bed controller 230. The bed controller 230 sends a signal to the control interface 232 through which an audio indication and/or a visual indication on display 246 of completion of mattress side bolster 216 inflation is communicated in operation 326.
In this embodiment the mattress side bolsters 216 are configured to toggle between a fully inflated state and a fully deflated state. In one embodiment the pressure indicative of full inflation is variable based on weight of the patient supported by the mattress 112 to a predetermined pressure relief set point. In another embodiment the pressure indicative of full inflation may be input by a user via the control interface 232. In another contemplated embodiment, pressure indicative of full inflation is a function of the position of the extension 134.
Block 332 tests whether or not the deck extensions 134 are at their limit of retraction. If so, the method stops except for continuing the tests of blocks 330 (
Block 338 tests whether or not deflation of the side bolsters 216 has begun. If not the bed controller 230 issues a “deflate” command to the mattress controller 236 at block 340. The mattress controller 236 responds by beginning deflation of the side bolsters 216. At block 342 the mattress controller 236 monitors deflation progress and proceeds to block 344. At block 344 the method tests whether or not deflation is complete either as a result of the actions at blocks 340 and 342 or as a result of having arrived directly at block 344 from block 338. If the test at block 344 reveals that deflation is not complete the method continues the deflation process and sends a visual and/or aural indication of the ongoing deflation. One example of a visual indication is the flashing yellow illumination of one of lights 250E and 250R as described above. If the test at block 344 reveals that deflation is complete the method proceeds to block 348 where the mattress controller 236 signals the bed controller 230 that deflation is complete and sends a visual and/or aural indication of the fact that deflation is complete. One example of a visual indication is the steady green illumination of light 250R as described above.
Irrespective of whether the method has followed path 334A through blocks 352 and 354 or has followed path 334B through the appropriate blocks beyond block 336, the method arrives at block 350 where it tests whether or not the deck extensions 134 are at their limit of retraction. If not, the method returns to block 330. If so, the method stops, except for continuing to monitor for whether or not the extend and retract buttons 248E and 248R are being pressed.
The portion of the method outlined in
Block 360 tests whether or not the deck extensions 134 are at their limit of extension. If so, the method stops except for continuing the tests of blocks 330 and 358. If the deck extensions 134 are not at their limit of retraction the method proceeds along paths 362A and 362B to blocks 380 (
Block 366 tests whether or not inflation of the side bolsters 216 has begun. If not the bed controller 230 issues a “inflate” command to the mattress controller 236 at block 368. The mattress controller 236 responds by beginning inflation of the side bolsters 216. At block 370 the mattress controller 236 monitors inflation progress and proceeds to block 372. At block 372 the method tests whether or not inflation is complete either as a result of the actions at blocks 368 and 370 or as a result of having arrived directly at block 372 from block 366. If the test at block 372 reveals that inflation is not complete the method continues the inflation process and sends a visual and/or aural indication of the ongoing inflation. One example of a visual indication is the flashing yellow illumination of one of lights 250E and 250R as described above. If the test at block 372 reveals that inflation is complete the method proceeds to block 376 where the mattress controller 236 signals the bed controller 230 that inflation is complete and sends a visual and/or aural indication of the fact that inflation is complete. One example of a visual indication is the steady green illumination of light 250E as described above.
Irrespective of whether the method has followed path 362A through blocks 380 and 382 or has followed path 362B through the appropriate blocks beyond block 364, the method arrives at block 378 where it tests whether or not the deck extensions 134 are at their limit of extension. If not, the method returns to block 358. If so, the method stops, except for continuing to monitor for whether or not the extend and retract buttons 248E and 248R are being pressed.
As previously noted the deck extensions 134 can be extended and retracted manually. In the case of manual operation the step of determining whether or not the extend or retract buttons 248E or 248R are pressed (blocks 330 and 358) will not yield a “yes” answer. However the bed controller 230 is still able to monitor current readings or potentiometer 240 signals to track the position of the deck extension 134, including whether or not the deck extension 134 is at its extend limit or retract limit. As a result the method for manual operation is the same except that instead of being initiated by the bed controller 230 sensing whether or not the retract or extend button 248E or 248R is being pressed (blocks 330, 358) it is initiated by changes in the current readings or potentiometer signals. Similar to the case of push-button operation, manual operation generates a width alteration command. If a user pushes on the deck extensions 134 (or a component attached to the deck extensions 134) to cause the deck extensions 134 to retract, the command is a retract command. If a user pulls on the deck extensions 134 (or a component attached to the deck extensions 134) to cause the deck extensions 134 to extend, the command is an extend command. The retract and extend commands are of opposite polarity.
The foregoing description and associated
The method monitors response of the mattress 112 to operation of the fluid supply 224 at blocks 342, 370. The method of curtails operation of powered extension/retraction system 156 in response to the deck extension 134 reaching a limit consistent with the polarity of the command. The issuing step is conditioned on continued presence of the command during a pause interval (blocks 336, 364). The method also includes the step of providing an indication distinguishing between completion and incompletion of width adjustment (blocks 346, 374).
Referring principally to
Referring to
A bearing block 418 projects upwardly from each of the beams except for the center beam. Two bearing blocks 418B, 418D are partially visible in
Due to symmetry it will suffice to describe only one representative motor assembly (the right motor assembly) and the elements associated with it. Accordingly, the suffixes L and R will be appended to the reference numerals only as needed in the remainder of this description. Referring to
Referring to
As seen best in
When clasp 164 is engaged as seen in
The use of the terms “a” and “an” and “the” and similar referents in the context of describing the subject matter (particularly in the context of the following claims) are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein. Furthermore, the foregoing description is for the purpose of illustration only, and not for the purpose of limitation, as the scope of protection sought is defined by the claims as set forth hereinafter together with any equivalents thereof entitled to. The use of any and all examples, or exemplary language (e.g., “such as”) provided herein, is intended merely to better illustrate the subject matter and does not pose a limitation on the scope of the subject matter unless otherwise claimed. The use of the term “based on” and other like phrases indicating a condition for bringing about a result, both in the claims and in the written description, is not intended to foreclose any other conditions that bring about that result. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the invention as claimed.
The disclosures of any references and publications cited above are expressly incorporated by reference in their entireties to the same extent as if each were incorporated by reference individually.
This application is a continuation of U.S. patent application Ser. No. 15/877,880 filed on Jan. 23, 2018, which is a continuation of U.S. patent application Ser. No. 15/603,821 filed on May 24, 2017 (now U.S. Pat. No. 9,925,102) which is a continuation of U.S. patent application Ser. No. 14/548,647 filed on Nov. 20, 2014 (now U.S. Pat. No. 9,757,293) which is a continuation in part of International Application PCT/US2014/042342 filed on Jun. 13, 2014 and which claims priority to U.S. Provisional Patent Ser. No. 61/835,534 filed on Jun. 15, 2013. The contents of the foregoing applications are hereby incorporated herein by reference.
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| Tracked Claims for European Application No. 15170984.7; 5 pages. |
| Amended Final for European Application No. 15170984.7; 6 pages. |
| Amended Tracked changes for European Application No. 15170984.7; 7 pages. |
| Replacement drawings for European Application No. 15170984.7; 2 pages. |
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| European Search Report for European Application No. 13166067.2; Place of Search The Hague; Date of completion of search—Feb. 17, 2014. |
| Number | Date | Country | |
|---|---|---|---|
| 20190290516 A1 | Sep 2019 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 15877880 | Jan 2018 | US |
| Child | 16423435 | US | |
| Parent | 15603821 | May 2017 | US |
| Child | 15877880 | US | |
| Parent | 14548647 | Nov 2014 | US |
| Child | 15603821 | US |
