US4879776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anatomically conformable foam support pad
Assignee: Foamex LP
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Filing: 1988-04-04
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Granted: 1989-11-14
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Expires: 2008-04-04
Abstract
Abstract A convoluted foam pad for supporting a reclining human body on a bed including an area for supporting the shoulders of a body, an area for supporting the tail portion of a body and a general support area surrounding the shoulder and tail support areas for supporting the remainder of the body. Each support area is formed by peaks arranged in rows, wherein each peak has a flat top and is spaced from any adjacent peak in the same row by a valley. The average valley thickness of the valleys in both the shoulder support area and the tail support area are less than the average valley thickness of the valleys in the general support area. Another aspect of the invention is a method of manufacturing convoluted foam pads including compressing a foam block between two rollers having radially extended fingers of varying effective heights, cutting the compressed block into halves having varying peak heights and valleys having varying valley floor heights, and cutting the tops of the peaks off the create areas having lower volumes of foam than other areas.
Inventors
- 👤 David L. Farley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:22
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/14; A47C27/142; A47C27/146; A47C27/148; B; B29; B29C; B29C44/00; B29C44/34; B29C44/56; B29C44/5627; B29C44/5654; A41; A41D; A41D13/00; A41D13/015; A41D13/0156
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
221 words
An elongate convoluted foam pad for supporting a reclining human body on a bed, comprising: a bottom; a shoulder support area for supporting the shoulder portion of a body formed by peaks arranged in rows, wherein each peak has a substantially flat top and is spaced from any adjacent peak in the same row by a valley; a tail support area for supporting the tail portion of said body formed by peaks arranged in rows, wherein each peak has a substantially flat top and is spaced from any adjacent peak in the same row by a valley; and a general support area surrounding said shoulder support area and said tail support area formed by peaks arranged in rows, wherein each peak has a substantially flat top and is spaced from any adjacent peak in the same row by a valley, said valleys of said shoulder support area, said valleys of said tail support area and said valleys of said general support area each having an average valley thickness, wherein each of said peaks has a substantially uniform peak thickness and wherein said average valley thickness of said valleys in said shoulder support area and said average valley thickness of said valleys in said tail support area are less than said average valley thickness of said valleys in said general support area.
Claim 2
Dependent Claim
221 words
An elongate convoluted foam pad for supporting a reclining human body on a bed, comprising: a bottom; a shoulder support area for supporting the shoulder portion of a body formed by peaks arranged in rows, wherein each peak has a substantially flat top and is spaced from any adjacent peak in the same row by a valley; a tail support area for supporting the tail portion of said body formed by peaks arranged in rows, wherein each peak has a substantially flat top and is spaced from any adjacent peak in the same row by a valley; and a general support area surrounding said shoulder support area and said tail support area formed by peaks arranged in rows, wherein each peak has a substantially flat top and is spaced from any adjacent peak in the same row by a valley, said valleys of said shoulder support area, said valleys of said tail support area and said valleys of said general support area each having an average valley thickness, wherein each of said peaks has a substantially uniform peak thickness and wherein said average valley thickness of said valleys in said shoulder support area and said average valley thickness of said valleys in said tail support area are less than said average valley thickness of said valleys in said general support area.
Claim 3
Dependent Claim
18 words
The pad of claim 1, wherein all of said substantially flat tops are included in a single plane.
Claim 4
Dependent Claim
26 words
The pad of claim 2, wherein said pad is formed from a polyurethane foam having a density of between one and three pounds per cubic foot.
Claim 5
Dependent Claim
17 words
The pad of claim 3, wherein said peaks have a peak thickness between one and five inches.
Claim 6
Dependent Claim
29 words
The pad of claim 4, wherein some of said peaks have corners and some of said corners are connected to other of said corners of other peaks by webbing.
Claim 7
Dependent Claim
26 words
The pad of claim 5, wherein at least some of said corners are not connected by webbing, thereby providing a locale of decreased resistance to pressure.
Claim 8
Dependent Claim
162 words
A convoluted foam pad for supporting a human body on a bed, comprising: a bottom; a general support area; a shoulder support area; and a tail support area, each of said areas comprising adjacent rows of peaks having substantially flat tops and generally rectangular cross sections which form corners, said peaks in each row being separated by valleys and said peaks in adjacent rows being staggered, said valleys of said shoulder support area, said valleys of said tail support area and said valleys of said general support area each having an average valley thickness, said average valley thickness of said valleys in said general support area being greater than said average valley thickness of said valleys in said shoulder support area and greater than said average valley thickness of said valleys in said tail support area, said peaks and said valleys forming a checkerboard pattern wherein at least some of said corners of said peaks in adjacent rows are connected by webbing.
Claim 9
Dependent Claim
162 words
A convoluted foam pad for supporting a human body on a bed, comprising: a bottom; a general support area; a shoulder support area; and a tail support area, each of said areas comprising adjacent rows of peaks having substantially flat tops and generally rectangular cross sections which form corners, said peaks in each row being separated by valleys and said peaks in adjacent rows being staggered, said valleys of said shoulder support area, said valleys of said tail support area and said valleys of said general support area each having an average valley thickness, said average valley thickness of said valleys in said general support area being greater than said average valley thickness of said valleys in said shoulder support area and greater than said average valley thickness of said valleys in said tail support area, said peaks and said valleys forming a checkerboard pattern wherein at least some of said corners of said peaks in adjacent rows are connected by webbing.
Claim 10
Dependent Claim
36 words
The pad of claim 7, wherein at least some of said corners of said peaks in adjacent rows are not connected by webbing, thereby decreasing the resistance of the locale including the nonconnected corners to pressure.
Claim 11
Dependent Claim
170 words
A convoluted foam pillow for supporting the head and neck of a body, comprising: a bottom; a general support area formed by peaks arranged in rows, wherein each peak has a substantially flat top and is spaced from any adjacent peak in the same row by a valley; and a generally T-shaped head and neck support area formed by peaks arranged in rows, wherein each peak has a substantially flat top and is spaced from any adjacent peak in the same row by a valley, wherein each of said peaks has a substantially uniform peak thickness said valleys of said general support area and said valleys of said head and neck support area each having an average valley thickness, wherein said average valley thickness of said valleys in said head and neck support area is less than said average valley thickness of said valleys in said general support area, thereby forming an area of greater capacity to conform to the shape of said head and said neck of said body.
Claim 12
Dependent Claim
170 words
A convoluted foam pillow for supporting the head and neck of a body, comprising: a bottom; a general support area formed by peaks arranged in rows, wherein each peak has a substantially flat top and is spaced from any adjacent peak in the same row by a valley; and a generally T-shaped head and neck support area formed by peaks arranged in rows, wherein each peak has a substantially flat top and is spaced from any adjacent peak in the same row by a valley, wherein each of said peaks has a substantially uniform peak thickness said valleys of said general support area and said valleys of said head and neck support area each having an average valley thickness, wherein said average valley thickness of said valleys in said head and neck support area is less than said average valley thickness of said valleys in said general support area, thereby forming an area of greater capacity to conform to the shape of said head and said neck of said body.
Claim 13
Dependent Claim
18 words
The pillow of claim 9, wherein all of said substantially flat tops are included in a single plane.
Claim 14
Dependent Claim
26 words
The pillow of claim 10, wherein said pillow is formed from a polyurethane foam having a density of between one and three pounds per cubic foot.
Claim 15
Dependent Claim
17 words
The pillow of claim 11, wherein said peaks have a peak thickness between one and five inches.
Claim 16
Dependent Claim
30 words
The pad of claim 12, wherein said peaks form corners and some of said corners of said peaks are connected to said corners of other of said peaks by webbing.
Claim 17
Dependent Claim
29 words
The pad of claim 13, wherein at least some of the corners of said peaks are not connected by webbing, thereby providing a locale of decreased resistance to pressure.
Claim 18
Dependent Claim
173 words
A convoluted foam wheelchair pad for supporting the thigh and buttocks of a body on a wheelchair, comprising: a bottom; a general support area formed by peaks arranged in rows, wherein each peak has a substantially flat top and is spaced from any adjacent peak in the same row by a valley; and a generally U-shaped thigh and buttock support area formed by peaks arranged in rows, wherein each peak has a substantially flat top and is spaced from any adjacent peak in the same row by a valley, wherein each of said peaks has a substantially uniform peak thickness, said valleys of said general support area and said valleys of said thigh and buttock support area each having an average valley thickness, wherein said average valley thickness of said valleys in said thigh and buttock support area is less than said average valley thickness of said valleys in said general support area, thereby forming an area of greater capacity to conform to the shape of said thighs and buttocks of said body.
Claim 19
Dependent Claim
173 words
A convoluted foam wheelchair pad for supporting the thigh and buttocks of a body on a wheelchair, comprising: a bottom; a general support area formed by peaks arranged in rows, wherein each peak has a substantially flat top and is spaced from any adjacent peak in the same row by a valley; and a generally U-shaped thigh and buttock support area formed by peaks arranged in rows, wherein each peak has a substantially flat top and is spaced from any adjacent peak in the same row by a valley, wherein each of said peaks has a substantially uniform peak thickness, said valleys of said general support area and said valleys of said thigh and buttock support area each having an average valley thickness, wherein said average valley thickness of said valleys in said thigh and buttock support area is less than said average valley thickness of said valleys in said general support area, thereby forming an area of greater capacity to conform to the shape of said thighs and buttocks of said body.
Claim 20
Dependent Claim
18 words
The pad of claim 15, wherein all of said substantially flat tops are included in a single plane.
Claim 21
Dependent Claim
26 words
The pad of claim 16, wherein said pad is formed from a polyurethane foam having a density of between one and three pounds per cubic foot.
Claim 22
Dependent Claim
17 words
The pad of claim 17, wherein said peaks have a peak thickness between one and five inches.
Claim 23
Dependent Claim
28 words
The pad of claim 18, wherein said peaks form corners and some of said corners of said peaks are connected to the corners of other peaks by webbing.
Claim 24
Dependent Claim
31 words
The pad of claim 19, wherein at least some of said corners are not connected by webbing to other of said peaks, thereby providing a locale of decreased resistance to pressure.
References Cited (Backward Citations)
DE1015240B
Cited
US3197357A
Cited
US3431802A
Cited
US2902091A
Cited
US3311007A
Cited
US3690203A
Cited
US3695128A
Cited
US3730031A
Cited
US3828378A
Cited
US4335476A
Cited
US4522447A
Cited
US4351211A
Cited
US4392489A
Cited
US4686724A
Cited
US4550547A
Cited
US4603445A
Cited
US4673452A
Cited
US4620337A
Cited
US4672700A
Cited
US4679266A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-13 | 1993-05-15 | 1993-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-13 | 1997-05-15 | 1997-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-13 | 2001-05-15 | 2001-11-14 | $7700.00 | Window Closed / Lapsed |