Patent US3443265A successfully refreshed from Google Patents.
Patent US3853344A successfully refreshed from Google Patents.
US3853344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact absorbing bumper system
Assignee: Nissan Motor Co Ltd
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Filing: 1972-11-16
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Granted: 1974-12-10
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Expires: 1992-11-16
Abstract
Abstract An improved impact absorbing bumper system comprising two retractable struts integrated with a front or rear bumper and mounting means for mounting respective retractable struts on a chassis of the vehicle, each mounting means resisting the impact transmitted from one of the retractable struts during a collision at low-intermediate speed, and for converting a portion of the impact from the retractable strut to the torsion energy of a torsion bar embedded in the chassis during a collision at high speed, whereby the impact will be effectively reduced before transmitted to an occupant compartment of the vehicle.
Inventors
- 👤 H Shimoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:25
CPC Classifications
B; B60; B60R; B60R19/00; B60R19/02; B60R19/24; B60R19/26; B60R19/36; B60R19/32; B60R19/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
281 words
An impact absorbing bumper system for a wheeled vehicle which has an end cross member, and at least one side frame extending from the end cross member inwards and substantially longitudinally of the vehicle comprising: a bumper outside the end cross member; a retractable strut integrated with said bumper and extending from said bumper through the end cross member inwards and substantially longitudinally of the vehicle; and mounting means, which comprises a torsion bar embedded in the side frame, for mounting said retractable strut on said side frame, resisting an impact force transmitted from said retractable strut upon a collision of the vehicle with a solid barrier at lowintermediate speed and converting a portion of an impact transmitted from said retractable strut to a torsion energy of said torsion bar upon a collision of the vehicle with a solid barrier at high speed, said mounting means further comprising two arms integrated wih said torsion bar and extending from upper and lower ends of said torsion bar to said retractable strut for holding said retractable strut therebetween; and fastening means for fastening said two arms to said retractable strut, said mounting means further comprising a block built in said side frame, in which block said torsion bar is embedded, and said torsion bar still further comprising a central portion having a square cross-section; an upper end having a square cross section; a rod portion interconnecting said central portion and said upper end; a lower end having a square crosssection; and a second rod portion interconnecting said central portion and said lower end, and wherein said torsion bar is embedded at the central portion thereof in said block built in said side frame.
Claim 2
Dependent Claim
281 words
An impact absorbing bumper system for a wheeled vehicle which has an end cross member, and at least one side frame extending from the end cross member inwards and substantially longitudinally of the vehicle comprising: a bumper outside the end cross member; a retractable strut integrated with said bumper and extending from said bumper through the end cross member inwards and substantially longitudinally of the vehicle; and mounting means, which comprises a torsion bar embedded in the side frame, for mounting said retractable strut on said side frame, resisting an impact force transmitted from said retractable strut upon a collision of the vehicle with a solid barrier at lowintermediate speed and converting a portion of an impact transmitted from said retractable strut to a torsion energy of said torsion bar upon a collision of the vehicle with a solid barrier at high speed, said mounting means further comprising two arms integrated wih said torsion bar and extending from upper and lower ends of said torsion bar to said retractable strut for holding said retractable strut therebetween; and fastening means for fastening said two arms to said retractable strut, said mounting means further comprising a block built in said side frame, in which block said torsion bar is embedded, and said torsion bar still further comprising a central portion having a square cross-section; an upper end having a square cross section; a rod portion interconnecting said central portion and said upper end; a lower end having a square crosssection; and a second rod portion interconnecting said central portion and said lower end, and wherein said torsion bar is embedded at the central portion thereof in said block built in said side frame.
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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |