Patent US3819218A successfully refreshed from Google Patents.
US3819218A
Expired / Lapsed
US
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Energy absorbing safety bumper
Assignee: Individual
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Filing: 1972-10-03
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Granted: 1974-06-25
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Expires: 1992-10-03
Abstract
Abstract A kinetic energy absorbing safety structure including at least one adjustable and replaceable elongated energy-absorbing element, the element being disposed in the structure to absorb kinetic energy only by elongating plastically under a simple uniaxial tension load, the tension load being exerted on the element when a compressive force is applied to an impact portion of the structure.
Inventors
- 👤 C Liu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:30
CPC Classifications
B; B60; B60R; B60R19/00; B60R19/02; B60R19/24; B60R19/26; B60R19/34; F; F16; F16F; F16F7/00; F16F7/12; F16F7/128
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
86 words
An energy-absorbing safety bumper, comprising: a stationary frame; a movable mechanism mounted on said stationary frame and having an externally exposed impact portion and an internal portion; and energy-absorbing means including at least one replaceable elongated energy-absorbing element having a reduced diameter portion between its ends, said element being operatively coupled at its ends to said internal portion of said movable mechanism for absorbing kinetic energy only by elongating plastically under a simple uniaxial tension load produced by a compressive force incident on said impact portion.
Claim 2
Dependent Claim
86 words
An energy-absorbing safety bumper, comprising: a stationary frame; a movable mechanism mounted on said stationary frame and having an externally exposed impact portion and an internal portion; and energy-absorbing means including at least one replaceable elongated energy-absorbing element having a reduced diameter portion between its ends, said element being operatively coupled at its ends to said internal portion of said movable mechanism for absorbing kinetic energy only by elongating plastically under a simple uniaxial tension load produced by a compressive force incident on said impact portion.
Claim 3
Dependent Claim
120 words
An energy-absorbing safety bumper, comprising: a stationary frame; a movable mechanism mounted on said stationary frame and having an Externally exposed impact portion and an internal portion, said movable mechanism including four pivotally interconnected compression members in a general M-shape configuration; and energy-absorbing means including three replaceable elongated energy-absorbing elements, one of said energy-absorbing elements being pivotally connected between ends of the compression member configuration to define three adjacent triangles for absorbing kinetic energy only by elongating plastically under a simple uniaxial tension load produced by a compressive force incident on said impact portion, each of said three energy-absorbing elements being parallel to each other and orthogonal generally to the direction of said compressive force incident on said impact portion.
Claim 4
Dependent Claim
120 words
An energy-absorbing safety bumper, comprising: a stationary frame; a movable mechanism mounted on said stationary frame and having an Externally exposed impact portion and an internal portion, said movable mechanism including four pivotally interconnected compression members in a general M-shape configuration; and energy-absorbing means including three replaceable elongated energy-absorbing elements, one of said energy-absorbing elements being pivotally connected between ends of the compression member configuration to define three adjacent triangles for absorbing kinetic energy only by elongating plastically under a simple uniaxial tension load produced by a compressive force incident on said impact portion, each of said three energy-absorbing elements being parallel to each other and orthogonal generally to the direction of said compressive force incident on said impact portion.
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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |