US4515502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine fenders
Assignee: Bridgestone Corp
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Filing: 1981-10-16
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Granted: 1985-05-07
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Expires: 2001-10-16
Abstract
Abstract A marine fender is disclosed, which comprises a hollow cylindrical body composed of rubber or rubbery elastic material, each end of which being provided with a flange for a quay wall or a shock receiving member, an annular rigid reinforcing plate embedded in each flange, and a fillet reinforcement provided on a foot portion of each flange. In the marine fender, an annular groove is further formed in a region adjacent to the fillet reinforcement at each end of the body.
Inventors
- 👤 Shinichi Kajigaya
- 👤 Mitsuo Nakaya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:41
CPC Classifications
B; B63; B63B; B63B59/00; B63B59/02; E; E02; E02B; E02B3/00; E02B3/20; E02B3/26; F; F16; F16F; F16F1/00; F16F1/36; F16F1/42; F16F1/422; F16F2236/00; F16F2236/02; Y; Y02; Y02A; Y02A30/00; Y02A30/30
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
117 words
A marine fender comprising; a hollow cylindrical body composed of rubber or rubbery elastic material, one end of which having a securing flange for a quay wall, the other end of which having a fitting flange for a shock receiving member, an annular rigid reinforcing plate embedded in each of both the flanges, a fillet reinforcement provided on a foot portion of each of said flanges in said body and an annular groove formed in an outside wall of said hollow cylindrical body in a region adjacent to said fillet reinforcement at each end of said body within a range of 0.07H to 0.2H, wherein H is a distance between said flanges, as measured from each flange.
Claim 2
Dependent Claim
117 words
A marine fender comprising; a hollow cylindrical body composed of rubber or rubbery elastic material, one end of which having a securing flange for a quay wall, the other end of which having a fitting flange for a shock receiving member, an annular rigid reinforcing plate embedded in each of both the flanges, a fillet reinforcement provided on a foot portion of each of said flanges in said body and an annular groove formed in an outside wall of said hollow cylindrical body in a region adjacent to said fillet reinforcement at each end of said body within a range of 0.07H to 0.2H, wherein H is a distance between said flanges, as measured from each flange.
Claim 3
Dependent Claim
15 words
The marine fender of claim 1 wherein said annular groove is trapezoidal in cross section.
Claim 4
Dependent Claim
28 words
The marine fender of claim 2 wherein said annular groove has an inner wall width in the range of 0.01-0.1H and a depth in the range of 0.005-0.01H.
Claim 5
Dependent Claim
15 words
The marine fender of claim 1 wherein said annular groove is arcuate in cross section.
Claim 6
Dependent Claim
20 words
The marine fender of claim 4 wherein said annular groove has a radius of curvature in the range of 0.005-0.02H.
Claim 7
Dependent Claim
19 words
The marine fender of claim 1 wherein said annular groove comprises an arcuate section and an adjacent flat section.
Claim 8
Dependent Claim
32 words
The marine fender of claim 6 wherein said arcuate section has a radius of curvature in the range of 0.005-0.02H and said flat section has a depth in the range of 0.001-0.01H.
Claim 9
Dependent Claim
24 words
The marine fender of claim 1 wherein said groove comprises an arcuate round-bottom triangular groove having an oblique wall tangential to said arcuate portion.
Claim 10
Dependent Claim
41 words
The marine fender of claim 8 wherein said arcuate round-bottom groove has a depth in the range of 0.005-0.01H and said oblique has length from the inner most portion of said groove to said outside wall in the range of 0.01-0.2H.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |