US3779536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Buffer or fender
Assignee: Clouth Gummiwerke AG
•
Filing: 1972-01-31
•
Granted: 1973-12-18
•
Expires: 1992-01-31
Abstract
Abstract A buffer of elastomeric material forming a hollow body which has two legs spaced from each other in the direction in which the buffer exerts its main cushioning action and also has two additional legs arranged opposite and in spaced relationship to each other while interconnecting the end portions of said first legs, one of said first legs having bendable elastic insert means therein limiting the elasticity to about half of the flexibility of said additional legs.
Inventors
- 👤 H Lachmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:41
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/20; E02B3/26; F; F16; F16F; F16F1/00; F16F1/36; F16F1/371; Y; Y02; Y02A; Y02A30/00; Y02A30/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
97 words
A buffer of elastomeric material which includes: two first legs spaced from each other in and extending transverse to the main force direction in which said buffer is to exert its main cushioning action, two additional legs spaced from each other and respectively interconnecting the end portions of said first legs, said first legs and said additional legs together defining a cavity with each other, and elastic reinforcing insert means in at least one of said first legs and limiting the flexibility of the latter to bending stiffness only about half the flexibility of said additional legs.
Claim 2
Dependent Claim
97 words
A buffer of elastomeric material which includes: two first legs spaced from each other in and extending transverse to the main force direction in which said buffer is to exert its main cushioning action, two additional legs spaced from each other and respectively interconnecting the end portions of said first legs, said first legs and said additional legs together defining a cavity with each other, and elastic reinforcing insert means in at least one of said first legs and limiting the flexibility of the latter to bending stiffness only about half the flexibility of said additional legs.
Claim 3
Dependent Claim
35 words
A buffer according to claim 1, in which one of said first legs has bendable elastic reinforcing insert means arranged therein whereas the other one of said first legs has rigid reinforcing means arranged therein.
Claim 4
Dependent Claim
36 words
A buffer according to claim 1, in which said additional legs are approximately parallel to each other and substantially parallel to the axis in which said buffer is to be compressed for exerting its cushioning action.
Claim 5
Dependent Claim
26 words
A buffer according to claim 1, in which the additional legs flare from one of said first legs to the other one of said first legs.
Claim 6
Dependent Claim
17 words
A buffer according to claim 1, in which the additional legs vary in thickness along their length.
Claim 7
Dependent Claim
22 words
A buffer according to claim 1, in which the additional legs are thinner near their end portions than at the portions therebetween.
Claim 8
Dependent Claim
33 words
A buffer according to claim 1, in which the speed dependency of the bending force characteristic of the elastomeric material of the buffer is higher than that of the elastic reinforcing insert means.
References Cited (Backward Citations)
US3418815A
Cited
US3563525A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |