US4842330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective seat cushion
Assignee: Sunrise Medical HHG Inc
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Filing: 1988-09-26
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Granted: 1989-06-27
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Expires: 2008-09-26
Abstract
Abstract A light-weight, low-profile seat cushion is attached to a body engaging sling. The cushion includes a foam base having a dished out central portion, and an envelope, partially filled with fluid, positioned over the dished out portion of the base. In the preferred embodiment, a self-supporting back support is attached to the rear of the seat cushion.
Inventors
- 👤 Eric C. Jay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:28
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/1043; A61G5/1045; A61G5/1091; Y; Y10; Y10S; Y10S297/00; Y10S297/03; Y10S297/06
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
139 words
A light-weight. low-profile seat cushion consisting of a cushion and a sling attachment system comprising: said cushion comprising: an envelope partially filled with fluid, said envelope having a plurality of short segments about its periphery, thus limiting the flow of said fluid into the portion of said envelope adjacent to its periphery; and a supporting foam base comprising a flat bottom and a centrally positioned dished-out oval portion in the upper surface; said fluid filled envelope positioned upon said foam base, said envelope being centered over said dished-out oval portion, whereby said fluid is substantially maintained over said dished-out oval portion; said sling attachment system comprising body engaging straps and means to affix said straps to said cushion and said cushion cooperating with said sling attachment system to provide a portable cushion attachable to the body of the user.
Claim 2
Dependent Claim
139 words
A light-weight. low-profile seat cushion consisting of a cushion and a sling attachment system comprising: said cushion comprising: an envelope partially filled with fluid, said envelope having a plurality of short segments about its periphery, thus limiting the flow of said fluid into the portion of said envelope adjacent to its periphery; and a supporting foam base comprising a flat bottom and a centrally positioned dished-out oval portion in the upper surface; said fluid filled envelope positioned upon said foam base, said envelope being centered over said dished-out oval portion, whereby said fluid is substantially maintained over said dished-out oval portion; said sling attachment system comprising body engaging straps and means to affix said straps to said cushion and said cushion cooperating with said sling attachment system to provide a portable cushion attachable to the body of the user.
Claim 3
Dependent Claim
23 words
A seat cushion as described in claim 1, whreein said fluid filled envelope is longitudinally segmented to divide said envelope into two halves.
Claim 4
Dependent Claim
36 words
A seat cushion as described in claim 1, wherein said fluid is a viscous liquid which flows gradually when pressure is applied to it, but which maintains its shape and position in the absence of pressure.
Claim 5
Dependent Claim
25 words
A seat oushion as described in claim 1, wherein said supporting foam base is higher along the rear edge and lower along the front edge.
Claim 6
Dependent Claim
23 words
A seat cushion as described in claim 1, wherein the bottom of said sling attachment is coated with a smooth, abrasiion resistant material.
Claim 7
Dependent Claim
17 words
A seat cushion as described in claim 1, wherein the bottom of said sling attachment is waterproof.
Claim 8
Dependent Claim
19 words
A seat cushion as described in claim 1, wherein extra material is provided in the center of the envelope.
Claim 9
Dependent Claim
113 words
A light-weight, low profile seat cushion consisting of a cushion and a sling attachment system comprising: said cushion comprising: an envelope partially filled with fluid; and a supporting foam base comprising a flat bottom and a centrally positioned dished-out oval portion in the upper surface, said supporting foam base being higher along the rear edge and lower along the front edge side edges of intermediate height; said fluid filled envelope positioned upon said foam base; said sling attachment system comprising body engaging straps and means to affix said straps to said cushion; and said cushion cooperating with said sling attachment system to provide a portable cushion attachable to the body of the user.
Claim 10
Dependent Claim
113 words
A light-weight, low profile seat cushion consisting of a cushion and a sling attachment system comprising: said cushion comprising: an envelope partially filled with fluid; and a supporting foam base comprising a flat bottom and a centrally positioned dished-out oval portion in the upper surface, said supporting foam base being higher along the rear edge and lower along the front edge side edges of intermediate height; said fluid filled envelope positioned upon said foam base; said sling attachment system comprising body engaging straps and means to affix said straps to said cushion; and said cushion cooperating with said sling attachment system to provide a portable cushion attachable to the body of the user.
Claim 11
Dependent Claim
28 words
A seat cushion as described in claim 8, said envelope being centered over said dished-out oval portion, whereby said fluid is substantially maintained over said dished-out oval portion.
Claim 12
Dependent Claim
23 words
A seat cushion as described in claim 8, wherein said fluid filled envelope is longitudinally segmented to divide said envelope into two halves.
Claim 13
Dependent Claim
33 words
A seat cushion as described in claim 8, wherein said envelope is segmented about its periphery, thus limiting the flow of said fluid into the portion of the envelope adjacent to the periphery.
Claim 14
Dependent Claim
36 words
A seat cushion as described in claim 8, wherein said fluid is a viscous liquid which flows gradually when pressure is applied to it, but which maintains its shape and position in the absence of pressure.
Claim 15
Dependent Claim
19 words
A seat cushion as described in claim 8, wherein extra material is provided in the center of the envelope.
Claim 16
Dependent Claim
96 words
A light-weight, low-profile seat cushion consisting of a cushion, a self-supporting back support and a sling attachment system comprising: a cushion; a self-supporting back support, said back support disposed adjacent to the rear of said cushion and extending along both sides of said cushion, said back support being fixed in a vertical position with respect to said cushion; a sling attachment system comprising body engaging straps and means to affix said straps to said cushion; and said cushion cooperating with said sling attachment system to provide a portable cushion attachable to the body of the user.
Claim 17
Dependent Claim
96 words
A light-weight, low-profile seat cushion consisting of a cushion, a self-supporting back support and a sling attachment system comprising: a cushion; a self-supporting back support, said back support disposed adjacent to the rear of said cushion and extending along both sides of said cushion, said back support being fixed in a vertical position with respect to said cushion; a sling attachment system comprising body engaging straps and means to affix said straps to said cushion; and said cushion cooperating with said sling attachment system to provide a portable cushion attachable to the body of the user.
Claim 18
Dependent Claim
38 words
A seat cushion as described in claim 14, wherein said cushion comprises: an envelope partially filled with fluid; and a supporting foam base comprising a flat bottom and a centrally positioned dished-out oval portion in the upper surface.
Claim 19
Dependent Claim
19 words
A seat cushion as described in claim 14, wherein said back support is constructed of firm, closed cell foam.
Claim 20
Dependent Claim
23 words
A seat cushion as described in claim 15, wherein said fluid filled envelope is longitudinally segmented to divide said envelope into two halves.
Claim 21
Dependent Claim
33 words
A seat cushion as described in claim 15, wherein said envelope is segmented about its periphery, thus limiting the flow of said fluid into the portion of the envelope adjacent to the periphery.
Claim 22
Dependent Claim
36 words
A seat cushion as described in claim 15, wherein said fluid is a viscous liquid which flows gradually when pressure is applied to it, but which maintains its shape and position in the absence of pressure.
Claim 23
Dependent Claim
19 words
A seat cushion as described in claim 15, wherein extra material is provided in the center of the envelope.
Claim 24
Dependent Claim
119 words
A light-weight, low-profile seat cushion consisting of a cushion and a sling attachment system comprising: said cushion comprising: an envelope partially filled with fluid; and a supporting foam base comprising a flat bottom and a centrally positioned dished-out oval portion in the upper surface; said fluid filled envelope positioned upon said foam base, said envelope having extra material in the center, said envelope being centered over said dished-out oval portion, whereby said fluid is substantially maintained over said dished-out oval portion; said sling attachment system comprising body engaging straps and means to affix said straps to said cushion; and said cushion cooperating with said sling attachment system to provide a portable cushion attachable to the body of the user.
Claim 25
Dependent Claim
119 words
A light-weight, low-profile seat cushion consisting of a cushion and a sling attachment system comprising: said cushion comprising: an envelope partially filled with fluid; and a supporting foam base comprising a flat bottom and a centrally positioned dished-out oval portion in the upper surface; said fluid filled envelope positioned upon said foam base, said envelope having extra material in the center, said envelope being centered over said dished-out oval portion, whereby said fluid is substantially maintained over said dished-out oval portion; said sling attachment system comprising body engaging straps and means to affix said straps to said cushion; and said cushion cooperating with said sling attachment system to provide a portable cushion attachable to the body of the user.
Claim 26
Dependent Claim
36 words
A seat cushion as described in claim 21, wherein extra material is provided to the center of said envelope by removing V-shaped areas from the surface of said envelope and heat sealing the resultant edges together.
Claim 27
Dependent Claim
23 words
A seat cushion as described in claim 21, wherein said fluid filled envelope is longitudinally segmented to divide said envelope into two halves.
Claim 28
Dependent Claim
33 words
A seat cushion as described in claim 21, wherein said envelope is segmented about its periphery, thus limiting the flow of said fluid into the portion of the envelope adjacent to the periphery.
Claim 29
Dependent Claim
36 words
A seat cushion as described in claim 21, wherein said flow is a viscous liquid which flows gradually when pressure is applied to it, but which maintains its shape and position in the absence of pressure.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |