US3984926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heel cushion
Assignee: Individual
•
Filing: 1975-11-25
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Granted: 1976-10-12
•
Expires: 1995-11-25
Abstract
Abstract A heel cushion having a resilient and compressible pad formed by a pair of surfaces which diverge to a thickness from 3/4 inches to 13/4 inches, inclusive. The resilient and compressible pad is formed of flexible and compressible material having a density in the range of 2.50 to 4.50 pounds per cubic foot, inclusive, and a compression in the range of 25 to 80 RMA, inclusive.
Inventors
- 👤 Samuel Calderon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:47
CPC Classifications
A; A43; A43B; A43B21/00; A43B21/24; A43B21/32
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
61 words
A heel cushion comprising a pad member having a pair of surfaces which diverge to a thickness 3/4 inches to 13/4 inches, inclusive, said pad member being formed of a resilient and compressible material having a density in the range of 2.50 to 4.50 pounds per cubic foot, inclusive, and a compression in the range of 25 to 80 RMA, inclusive.
Claim 2
Dependent Claim
61 words
A heel cushion comprising a pad member having a pair of surfaces which diverge to a thickness 3/4 inches to 13/4 inches, inclusive, said pad member being formed of a resilient and compressible material having a density in the range of 2.50 to 4.50 pounds per cubic foot, inclusive, and a compression in the range of 25 to 80 RMA, inclusive.
Claim 3
Dependent Claim
19 words
A heel cushion as set forth by claim 1 wherein said resilient and compressible material comprises latex foam rubber.
Claim 4
Dependent Claim
21 words
A heel cushion as set forth by claim 2 wherein said pair of surfaces diverge to a thickness of 13/8 inches.
Claim 5
Dependent Claim
41 words
A heel cushion as set forth by claim 1 wherein said material comprises polyurethane having a density in the range of 2.50 to 4.00 pounds per square foot, inclusive, and a compression in the range of 25 to 70 RMA, inclusive.
Claim 6
Dependent Claim
21 words
A heel cushion as set forth by claim 4 wherein said pair of surfaces diverge to a thickness of 13/8 inches.
Claim 7
Dependent Claim
53 words
A heel cushion as set forth in claim 1 wherein said paid of surfaces comprise a substantially flat first surface and a substantially flat second surface angularly disposed with respect to said first surface, a plurality of parallel holes formed in said pad, said plurality of holes disposed perpendicular to said first surface.
Claim 8
Dependent Claim
19 words
A heel cushion as set forth by claim 6 wherein said resilient and compressible material comprises latex foam rubber.
Claim 9
Dependent Claim
49 words
A heel cushion as set forth by claim 1 wherein said pair of surfaces comprise a substantially flat first surface and a substantially flat second surface angularly disposed with respect to said first surface, further including means for securing said first surface to surface of a piece of footwear.
Claim 10
Dependent Claim
51 words
A heel cushion as set forth by claim 8 wherein said means for securing said first surface to a surface of a piece of footwear comprises one or more pieces of tape with adhesive means on both surfaces thereof, one surface of said tape being adhesively secured to said first surface.
Claim 11
Dependent Claim
22 words
A heel cushion as set forth by claim 9 and further including a strip of covering material secured to said second surface.
Claim 12
Dependent Claim
44 words
A heel cushion as set forth by claim 1 wherein said surfaces diverge from a front portion to a rear portion, said rear portion comprising a rear surface joining said diverging surfaces, said rear surface having a portion tapering forwardly from said lower surface.
Claim 13
Dependent Claim
44 words
A heel cushion as set forth by claim 1 wherein said surfaces diverge from a front portion to a rear portion, said rear portion comprising a rear surface joining said diverging surfaces, said rear surface having a portion tapering rearwardly from said lower surface.
References Cited (Backward Citations)
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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) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |