US4252355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bumpers or shields for the protection of automobiles
Assignee: Renault SA
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Filing: 1979-05-14
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Granted: 1981-02-24
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Expires: 1999-05-14
Abstract
Abstract A composite bumper structure is made up of an elongated molded bumper section, molded attachment lugs and energy absorbers. The bumper section is integrally molded with the lugs and both contain elongated reinforcement fibers. The energy of a collision is absorbed both by the deformation of the energy absorbers and the elastic deformation of the lugs. The bumper section may also support a stylistic facade.
Inventors
- 👤 Marcel Goupy
- 👤 Pierre Roubinet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:28
CPC Classifications
B; B60; B60R; B60R19/00; B60R19/02; B60R19/24; B60R19/26
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
126 words
A composite bumper structure for an automobile, said structure comprising: a bumper section composed of molded synthetic material, said bumper section including a plurality of molded attachment means integrally molded with said bumper section for connecting said bumper section to said automobile, said attachment means being elastically deformable, wherein each of said molded attachment means is in the form of an elongated lug and contains high density of elongated reinforcement fibers, the orientation of the major portion of which is parallel to the direction of elongation of said lug; and a plurality of energy absorbers also attaching said bumper section to said automobile; wherein at least a portion of a force acting on said bumper section will be absorbed by elastically deforming said molded attachment means.
Claim 2
Dependent Claim
126 words
A composite bumper structure for an automobile, said structure comprising: a bumper section composed of molded synthetic material, said bumper section including a plurality of molded attachment means integrally molded with said bumper section for connecting said bumper section to said automobile, said attachment means being elastically deformable, wherein each of said molded attachment means is in the form of an elongated lug and contains high density of elongated reinforcement fibers, the orientation of the major portion of which is parallel to the direction of elongation of said lug; and a plurality of energy absorbers also attaching said bumper section to said automobile; wherein at least a portion of a force acting on said bumper section will be absorbed by elastically deforming said molded attachment means.
Claim 3
Dependent Claim
31 words
The composite bumper structure of claim 1, wherein said molded attachment means are in the form of lugs which are pressed from adjacent the longitudinal center line of said bumper structure.
Claim 4
Dependent Claim
19 words
The composite bumper structure of claim 1, wherein said bumper section supports a stylistic facade composed of thermoplastic material.
Claim 5
Dependent Claim
28 words
The composite bumper section of claim 1, wherein said bumper section is positioned on a portion of said vehicle which is transverse to the length of said vehicle.
References Cited (Backward Citations)
US3999793A
Cited
US3843182A
Cited
FR2221930A5
Cited
FR2256656A5
Cited
US4029350A
Cited
FR2266595B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |