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US3650520A
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Energy absorbing device
Assignee: Rogers Corp
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Filing: 1970-06-29
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Granted: 1972-03-21
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Expires: 1990-06-29
Abstract
Abstract An energy absorbing device formed from an integral molded unit of an elastomeric material such as polyurethane. The unit is composed of an annular body portion having an elliptical configuration with relatively thick wall sections and a pair of impact elements projecting from the outer surface of the body portion at stations which lie generally along the minor axis of the elliptical configuration. The resilience of the body portion, and to a more limited extent the impacting elements, allows the device to absorb energy when objects strike the projecting ends of the impact elements.
Inventors
- 👤 John T Vernon
- 👤 Albert M Ankrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:45
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; F16F1/42; F16F1/422; F16F1/426; E; E04; E04F; E04F15/00; E04F15/22; E04F15/225; F16F2236/00; F16F2236/02; F16F2236/025
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
51 words
An energy absorbing device comprising: an annular body portion composed of an elastomeric material; and at least a first impact element projecting outwardly from the outer surface of said body portion, said impact element being integral with said body portion and composed of the same elastomeric material as the body portion.
Claim 2
Dependent Claim
51 words
An energy absorbing device comprising: an annular body portion composed of an elastomeric material; and at least a first impact element projecting outwardly from the outer surface of said body portion, said impact element being integral with said body portion and composed of the same elastomeric material as the body portion.
Claim 3
Dependent Claim
25 words
The elastomeric energy absorbing device of claim 1 wherein: the elastomeric material forming the integral body portion and impact element is a molded polyurethane elastomer.
Claim 4
Dependent Claim
28 words
The energy absorbing device of claim 1 wherein: the annular body portion has a central aperture with a generally elliptical configuration with the device in the unloaded condition.
Claim 5
Dependent Claim
39 words
The energy absorbing device of claim 3 wherein: the impact element projects outwardly from the body portion at a point on the outer surface of the body portion which lies substantially along the minor axis of the elliptical aperture.
Claim 6
Dependent Claim
57 words
The energy absorbing device of claim 1 wherein: a second integral impact element projects outwardly from the outer surface of the annular body portion, said second impact element extending from the outer surface of the body portion at a position remote from the first impact element and being composed of the elastomeric material forming the body portion.
Claim 7
Dependent Claim
33 words
The energy absorbing device of claim 5 wherein: the second impact element is located on the outer surface of the annular body portion at a position generally diametrically opposite the first impact element.
Claim 8
Dependent Claim
51 words
The energy absorbing device of claim 6 wherein: the annular body portion has an elliptical configuration; and the first and second impact elements are disposed on the outer surface of the body portion at positions lying substantially on the minor axis of the elliptical configuration and project along the minor axis.
Claim 9
Dependent Claim
24 words
The elastomeric energy absorbing device of claim 7 wherein the elastomeric material forming the integral body portion and impact elements is a molded polyurethane.
References Cited (Backward Citations)
US3236513A
Cited
US3230880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |