Patent US3795392A successfully refreshed from Google Patents.
US3795392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torsional energy absorber
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1972-06-23
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Granted: 1974-03-05
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Expires: 1992-06-23
Abstract
Abstract A torsional energy absorber has inner and outer arm members connected by a pivot means. The pivot means has an outer tubular member fastened to the outer arm member, an inner member concentrically spaced apart from the outer member and fastened to the inner arm member, and an elastomeric member engagingly positioned between the inner and outer members, preferably under compression, to absorb energy on impact against the energy absorber by initially torqueing between the members and then slipping on the members. Preferably, the inner and outer members are cylindrical sleeves of like curvilinear cross-sections, and the elastomeric member is an annulus. In addition, it is preferred that a self-restoring means, such as a clutch assembly, be provided to restore the inner and outer members to original relative positions after impact.
Inventors
- 👤 J Nemec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:12
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; F16F1/38; F16F1/3807; F16F1/3821; B; B60; B60R; B60R19/00; B60R19/02; B60R19/24; B60R19/26; F16F1/42; F16F1/46; B60R19/30; B60R2019/266; F16F2236/00; F16F2236/06; F16F2236/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
123 words
An energy absorber comprising: A. outer arm members, B. inner arm members, C. a pivot means connecting said outer arm members to said inner arm members, said pivot means having 1. a tubular, rigid, outer sleeve secured to said outer arm members, 2. a tubular, rigid, inner sleeve disposed coaxially with and radially inwardly of said outer sleeve and secured to said inner arm members, 3. an elastomeric annulus radially compressed between said inner and outer sleeves and adapted upon impact to torque between said sleeves upon relative rotation between said sleeves about their axis up to a preselected angle and slip on said sleeves upon relative rotation between said sleeves about their axis of an angle in excess of said preselected angle.
Claim 2
Dependent Claim
123 words
An energy absorber comprising: A. outer arm members, B. inner arm members, C. a pivot means connecting said outer arm members to said inner arm members, said pivot means having 1. a tubular, rigid, outer sleeve secured to said outer arm members, 2. a tubular, rigid, inner sleeve disposed coaxially with and radially inwardly of said outer sleeve and secured to said inner arm members, 3. an elastomeric annulus radially compressed between said inner and outer sleeves and adapted upon impact to torque between said sleeves upon relative rotation between said sleeves about their axis up to a preselected angle and slip on said sleeves upon relative rotation between said sleeves about their axis of an angle in excess of said preselected angle.
Claim 3
Dependent Claim
22 words
a tubular, rigid, inner sleeve disposed coaxially with and radially inwardly of said outer sleeve and secured to said inner arm members,
Claim 4
Dependent Claim
22 words
a tubular, rigid, inner sleeve disposed coaxially with and radially inwardly of said outer sleeve and secured to said inner arm members,
Claim 5
Dependent Claim
30 words
An energy absorber as set forth in claim 1 comprising in addition: d. self-restoring means for restoring the outer and inner arm members to their original relative positions after impact.
Claim 6
Dependent Claim
57 words
an elastomeric annulus radially compressed between said inner and outer sleeves and adapted upon impact to torque between said sleeves upon relative rotation between said sleeves about their axis up to a preselected angle and slip on said sleeves upon relative rotation between said sleeves about their axis of an angle in excess of said preselected angle.
Claim 7
Dependent Claim
57 words
an elastomeric annulus radially compressed between said inner and outer sleeves and adapted upon impact to torque between said sleeves upon relative rotation between said sleeves about their axis up to a preselected angle and slip on said sleeves upon relative rotation between said sleeves about their axis of an angle in excess of said preselected angle.
Claim 8
Dependent Claim
17 words
An energy absorber as set forth in claim 2 wherein: the self-restoring means is a clutch assembly.
Claim 9
Dependent Claim
29 words
An energy absorber as set forth in claim 1 wherein: the inner and outer sleeves have like curvilinear cross-sectional shapes selected from the group consisting of circular and elliptic.
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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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |