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US5395162A Expired / Lapsed US ⏱️ 0.0 years remaining

Seating system

Assignee: Sunrise Medical (US) LLC
•
Filing: 1994-06-03
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Granted: 1995-03-07
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Expires: 2014-06-03
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Abstract

Abstract A seating system for wheelchairs and other applications. The seating system includes a base member with an upper surface and a fluid pad positioned on the upper surface. The upper surface is preferably contoured and dimensioned to have areas corresponding to the user's ischial tuberosities and coccyx as well as the user's femurs including trochanters. The fluid pad in the preferred embodiment is one piece and has at least three separate and distinct pouches filled with fluid. Each pouch includes seals to contain the fluid in each pouch and to isolate and prevent fluid communication with the fluid in the other two pouches. Each pouch of the pad is then respectively positioned on the upper surface of the base member under the user's ischial tuberosities and coccyx. In this manner, each of the user's ischial tuberosities and coccyx is thereby supported on its own separate and distinct fluid pouch.

Inventors

  • 👤 Eric C. Jay
  • 👤 John C. Dinsmoor, III
  • 👤 Grant C. Denton
  • 👤 Richard R. Runkles

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 11:01
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/021; A47C27/00; A47C27/08; A47C27/085; A47C27/10; A47C27/14; A47C27/18; A47C4/00; A47C4/54; A47C7/029; A61; A61G; A61G5/00; A61G5/10; A61G5/1043; A61G5/1045; A61G5/1091; A61G7/00; A61G7/05; A61G7/057; A61G7/05715; Y; Y10; Y10S; Y10S5/00; Y10S5/922

Claims Analysis

Total Claims: 45
Claim 1
Independent Claim 143 words
In a seating system having a base member with an upper surface and a pad positioned on said upper surface to receive and support a user's buttocks including the user's ischial tuberosities and coccyx, the improvement wherein said pad includes at least three separate and distinct pouches containing a fluid having a viscosity of at least one and means for positioning a first of said three pouches under one of the user's ischial tuberosities, a second of said three pouches under the other of the user's ischial tuberosities, and a third of said three pouches under the user's coccyx, each pouch including means for sealing the fluid within each pouch to prevent fluid communication with the fluid in the other two pouches wherein each pouch has at least portions thereof respectively positioned immediately adjacent a portion of each of the other two pouches.
Claim 2
Dependent Claim 143 words
In a seating system having a base member with an upper surface and a pad positioned on said upper surface to receive and support a user's buttocks including the user's ischial tuberosities and coccyx, the improvement wherein said pad includes at least three separate and distinct pouches containing a fluid having a viscosity of at least one and means for positioning a first of said three pouches under one of the user's ischial tuberosities, a second of said three pouches under the other of the user's ischial tuberosities, and a third of said three pouches under the user's coccyx, each pouch including means for sealing the fluid within each pouch to prevent fluid communication with the fluid in the other two pouches wherein each pouch has at least portions thereof respectively positioned immediately adjacent a portion of each of the other two pouches.
Claim 3
Dependent Claim 26 words
The improvement of claim 1 wherein the sealing means of at least one pouch and the sealing means of another pouch include a common sealing seam.
Claim 4
Dependent Claim 22 words
The seating system of claim 1 wherein the respective sealing means of said first and third pouches include a common sealing seam.
Claim 5
Dependent Claim 24 words
The improvement of claim 1 wherein the sealing means of each adjacent pouch portion include a common sealing seam between the respective adjacent portions.
Claim 6
Dependent Claim 16 words
The improvement of claim 1 wherein the first and second pouches are substantially the same size.
Claim 7
Dependent Claim 43 words
The improvement of claim 1 wherein the seating system receives and supports the user's buttocks including each half side of the user's buttocks and said first pouch is dimensioned substantially the same size as one of the half sides of the user's buttocks.
Claim 8
Dependent Claim 24 words
The improvement of claim 6 wherein said second pouch is dimensioned substantially the same size as the other half side of the user's buttocks.
Claim 9
Dependent Claim 20 words
The improvement of claim 1 wherein the third pouch is smaller than each of the respective first and second pouches.
Claim 10
Dependent Claim 20 words
The improvement of claim 1 wherein the first and second pouches are filled with substantially the same volume of fluid.
Claim 11
Dependent Claim 28 words
The improvement of claim 1 wherein the volume of fluid in the third pouch is less than the volume in each of the respective first and second pouches.
Claim 12
Dependent Claim 15 words
The improvement of claim 1 wherein the shape of the third pouch is substantially triangular.
Claim 13
Dependent Claim 21 words
The improvement of claim 1 wherein said first and second pouches have portions straddling said third pouch on each side thereof.
Claim 14
Dependent Claim 13 words
The improvement of claim 1 wherein said fluid is a highly viscous liquid.
Claim 15
Dependent Claim 55 words
The seating system of claim 3 wherein the upper surface of said base member extends outwardly on each side of a central plane passing through said upper surface and said pad is positioned on said upper surface with said first and third pouches having the common sealing seam therebetween extending outwardly of the central plane.
Claim 16
Dependent Claim 21 words
The seating system of claim 14 wherein said common sealing seam extends outwardly of said central plane at substantially 60 degrees.
Claim 17
Dependent Claim 66 words
The seating system of claim 15 wherein the respective sealing means of said second and third pouches include a common sealing seam and said positioning means positions said three pouches on the upper surface of said base member with the common sealing seams of said first and third pouches and of said second and third pouches extending outwardly of said central plane on opposite sides thereof.
Claim 18
Dependent Claim 27 words
The seating system of claim 16 wherein said common sealing seam between said second and third pouches extends outwardly of said central plane at substantially 60 degrees.
Claim 19
Dependent Claim 55 words
The seating system of claim 16 wherein the respective sealing means of said first and second pouches includes a common sealing seam and said positioning means positions said three pouches on the upper surface of said base member with the common sealing seam of said first and second pouches lying substantially in said central plane.
Claim 20
Dependent Claim 22 words
The seating system of claim 3 wherein the respective sealing means of said second and third pouches include a common sealing seam.
Claim 21
Dependent Claim 267 words
A seating system for supporting a user's buttocks including the user's ischial tuberosities and coccyx, said seating system including means for respectively supporting each of the user's ischial tuberosities and coccyx on one of at least three separate and distinct pouches, each pouch containing a fluid having a viscosity of at least one and further having sealing means for containing the fluid within each pouch to isolate and prevent fluid communication with the fluid in the other two pouches, said seating system further including a base member with an upper surface and means for positioning said pouches on said upper surface of said base member, said upper surface of the base member having three areas dimensioned to substantially correspond to the areas of the user's ischial tuberosities and coccyx and said positioning means positions a first of said three pouches substantially over the area of the upper surface corresponding to one of the user's ischial tuberosities, a second of said three pouches substantially over the area of the upper surface corresponding to the other of the user's ischial tuberosities, and a third of said three pouches substantially over the area of the upper surface corresponding to the user's coccyx whereby each of the user's ischial tuberosities and coccyx is respectively supported on one of the three separate and distinct pouches wherein the respective sealing means of said first and third pouches include a common sealing seam, the respective sealing means of said second and third pouches include a common sealing seam, and the respective sealing means of said first and second pouches include a common sealing seam.
Claim 22
Dependent Claim 267 words
A seating system for supporting a user's buttocks including the user's ischial tuberosities and coccyx, said seating system including means for respectively supporting each of the user's ischial tuberosities and coccyx on one of at least three separate and distinct pouches, each pouch containing a fluid having a viscosity of at least one and further having sealing means for containing the fluid within each pouch to isolate and prevent fluid communication with the fluid in the other two pouches, said seating system further including a base member with an upper surface and means for positioning said pouches on said upper surface of said base member, said upper surface of the base member having three areas dimensioned to substantially correspond to the areas of the user's ischial tuberosities and coccyx and said positioning means positions a first of said three pouches substantially over the area of the upper surface corresponding to one of the user's ischial tuberosities, a second of said three pouches substantially over the area of the upper surface corresponding to the other of the user's ischial tuberosities, and a third of said three pouches substantially over the area of the upper surface corresponding to the user's coccyx whereby each of the user's ischial tuberosities and coccyx is respectively supported on one of the three separate and distinct pouches wherein the respective sealing means of said first and third pouches include a common sealing seam, the respective sealing means of said second and third pouches include a common sealing seam, and the respective sealing means of said first and second pouches include a common sealing seam.
Claim 23
Dependent Claim 30 words
The seating system of claim 20 wherein each of said first and second pouches respectively extends substantially in the range of three to five inches outwardly of said central plane.
Claim 24
Dependent Claim 33 words
The seating system of claim 20 wherein each of said first and second pouches respectively extends substantially in the range of five to seven inches along an axis extending in said central plane.
Claim 25
Dependent Claim 36 words
The seating system of claim 20 wherein said positioning means positions said third pouch to substantially straddle said central plane with portions of said third pouch extending outwardly of said central plane on each side thereof.
Claim 26
Dependent Claim 23 words
The seating system of claim 23 wherein said third pouch extends substantially two inches outwardly of said central plane on each side thereof.
Claim 27
Dependent Claim 19 words
The seating system of claim 20 wherein said first and second pouches are substantially mirror images of each other.
Claim 28
Dependent Claim 22 words
The seating system of claim 20 wherein said first and second pouches have portions straddling said third pouch on each side thereof.
Claim 29
Dependent Claim 42 words
The seating system of claim 27 wherein the seating system supports the user's buttocks including each half side of the user's buttocks and said first pouch is dimensioned substantially the same size as one of the half sides of the user's buttocks.
Claim 30
Dependent Claim 25 words
The seating system of claim 27 wherein said second pouch is dimensioned substantially the same size as the other half side of the user's buttocks.
Claim 31
Dependent Claim 16 words
The seating system of claim 20 wherein the shape of the third pouch is substantially triangular.
Claim 32
Dependent Claim 14 words
The seating system of claim 20 wherein said fluid is a highly viscous liquid.
Claim 33
Dependent Claim 16 words
The seating system of claim 20 wherein said upper surface of said base member is contoured.
Claim 34
Dependent Claim 317 words
A seating system for supporting a user's buttocks including the user's ischial tuberosities and coccyx, said seating system including means for respectively supporting each of the user's ischial tuberosities and coccyx on one of at least three separate and distinct pouches, each pouch containing a fluid having a viscosity of at least one and further having sealing means for containing the fluid within each pouch to isolate and prevent fluid communication with the fluid in the other two pouches, said seating system further including a base member with an upper surface and means for positioning said pouches on said upper surface of said base member, said upper surface of the base member having three areas dimensioned to substantially correspond to the areas of the user's ischial tuberosities and coccyx and said positioning means positions a first of said three pouches substantially over the area of the upper surface corresponding to one of the user's ischial tuberosities, a second of said three pouches substantially over the area of the upper surface corresponding to the other of the user's ischial tuberosities, and a third of said three pouches substantially over the area of the upper surface corresponding to the user's coccyx whereby each of the user's ischial tuberosities and coccyx is respectively supported on one of the three separate and distinct pouches, said upper surface of said base member extending outwardly on each side of a central plane passing through said upper surface and said positioning means positions said first and second pouches on said upper surface to extent outwardly of said central plane on opposite sides thereof, said seating system further including at least two additional pouches containing fluid and means for positioning one of said additional pouches outwardly of said first pouch relative to said central plane and means for positioning the second of said additional pouches outwardly of said second pouch relative to said central plane.
Claim 35
Dependent Claim 317 words
A seating system for supporting a user's buttocks including the user's ischial tuberosities and coccyx, said seating system including means for respectively supporting each of the user's ischial tuberosities and coccyx on one of at least three separate and distinct pouches, each pouch containing a fluid having a viscosity of at least one and further having sealing means for containing the fluid within each pouch to isolate and prevent fluid communication with the fluid in the other two pouches, said seating system further including a base member with an upper surface and means for positioning said pouches on said upper surface of said base member, said upper surface of the base member having three areas dimensioned to substantially correspond to the areas of the user's ischial tuberosities and coccyx and said positioning means positions a first of said three pouches substantially over the area of the upper surface corresponding to one of the user's ischial tuberosities, a second of said three pouches substantially over the area of the upper surface corresponding to the other of the user's ischial tuberosities, and a third of said three pouches substantially over the area of the upper surface corresponding to the user's coccyx whereby each of the user's ischial tuberosities and coccyx is respectively supported on one of the three separate and distinct pouches, said upper surface of said base member extending outwardly on each side of a central plane passing through said upper surface and said positioning means positions said first and second pouches on said upper surface to extent outwardly of said central plane on opposite sides thereof, said seating system further including at least two additional pouches containing fluid and means for positioning one of said additional pouches outwardly of said first pouch relative to said central plane and means for positioning the second of said additional pouches outwardly of said second pouch relative to said central plane.
Claim 36
Dependent Claim 33 words
The seating system of claim 32 wherein said one additional pouch extends along an axis extending in said central plane for a distance substantially greater than said first pouch extends along said axis.
Claim 37
Dependent Claim 33 words
The seating system of claim 33 wherein said second additional pouch extends along said axis extending in said central plane for a distance substantially greater than said second pouch extends along said axis.
Claim 38
Dependent Claim 20 words
The seating system of claim 32 wherein said first pouch and said one additional pouch share a common sealing seam.
Claim 39
Dependent Claim 20 words
The seating system of claim 35 wherein said second pouch and said second additional pouch share a common sealing seam.
Claim 40
Dependent Claim 87 words
The seating system of claim 32 wherein the upper surface of said base member has two additional areas substantially corresponding to the areas of the user's left femur including trochanter and the user's right femur including trochanter and said seating system further means for positioning one of said additional pouches substantially over the area of the upper surface corresponding to the user's left femur including trochanter and said second additional pouch substantially over the area of the upper surface corresponding to the user's right femur including trochanter.
Claim 41
Dependent Claim 14 words
The seating system of claim 32 wherein said fluid is a highly viscous liquid.
Claim 42
Dependent Claim 16 words
The seating system of claim 32 wherein said upper surface of said base member is contoured.
Claim 43
Dependent Claim 154 words
In a seating system having a base member with an upper surface and a pad positioned on said upper surface to receive and support a user's buttocks including the user's ischial tuberosities and coccyx, the improvement wherein said pad includes at least three separate and distinct pouches containing a fluid having a viscosity of at least one and means for positioning a first of said three pouches under one of the user's ischial tuberosities, a second of said three pouches under the other of the user's ischial tuberosities, and a third of said three pouches under the user's coccyx, each pouch including means for sealing the fluid within each pouch to prevent fluid communication with the fluid in the other two pouches wherein each sealing means includes a sealing seam and said sealing seam for each pouch has at least a common portion with the sealing seam of each of the other two pouches.
Claim 44
Dependent Claim 154 words
In a seating system having a base member with an upper surface and a pad positioned on said upper surface to receive and support a user's buttocks including the user's ischial tuberosities and coccyx, the improvement wherein said pad includes at least three separate and distinct pouches containing a fluid having a viscosity of at least one and means for positioning a first of said three pouches under one of the user's ischial tuberosities, a second of said three pouches under the other of the user's ischial tuberosities, and a third of said three pouches under the user's coccyx, each pouch including means for sealing the fluid within each pouch to prevent fluid communication with the fluid in the other two pouches wherein each sealing means includes a sealing seam and said sealing seam for each pouch has at least a common portion with the sealing seam of each of the other two pouches.
Claim 45
Dependent Claim 13 words
The improvement of claim 40 wherein said fluid is a highly viscous liquid.

References Cited (Backward Citations)

US3611455A Cited
US4588229A Cited
US4726624A Cited
US4726624B1 Cited
US4643481A Cited
US4660238A Cited
US4761843A Cited
US4698864A Cited
US4842330A Cited
US5018790A Cited
US4860397A Cited
US5189747A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1998-03-06 1998-09-05 1999-03-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2002-03-06 2002-09-05 2003-03-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2006-03-06 2006-09-05 2007-03-07 $7700.00 Window Closed / Lapsed

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