US4354700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bumper attachment apparatus, in particular for automobiles
Assignee: Renault SA
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Filing: 1980-01-29
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Granted: 1982-10-19
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Expires: 2000-01-29
Abstract
Abstract A pseudo-resilient bumper or shield attachment for attaching a bumper or shield to a vehicle is disclosed. The attachment is made up of a vertically extending elastically resilient counter-fitting having one end attached to the chassis of the vehicle and another end to which an inelastically deformable energy absorbing block is attached. The energy absorbing block is attached between the vertically extending counter-fitting and the bumper or shield, and includes collapsible energy absorbing thin walled partitions extending perpendicular to the resilient counter-fitting.
Inventors
- 👤 Marcel Goupy
- 👤 Pierre Roubinet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:41
CPC Classifications
B; B60; B60R; B60R19/00; B60R19/02; B60R19/24; B60R19/26; B60R19/36; B60R19/34
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
70 words
A pseudo-resilient bumper or shield attachment comprising: a vertically extending elastically resilient cantilever counter-fitting having one end attached to the chassis of a vehicle and having another end; and an inelastically deformable energy absorbing block having collapsible partitions, said block being in contact between said other end and said bumper or shield, wherein said block comprises a box having thin walled partitions, said partitions extending perpendicular to said resilient counter-fitting.
Claim 2
Dependent Claim
70 words
A pseudo-resilient bumper or shield attachment comprising: a vertically extending elastically resilient cantilever counter-fitting having one end attached to the chassis of a vehicle and having another end; and an inelastically deformable energy absorbing block having collapsible partitions, said block being in contact between said other end and said bumper or shield, wherein said block comprises a box having thin walled partitions, said partitions extending perpendicular to said resilient counter-fitting.
Claim 3
Dependent Claim
26 words
The apparatus of claim 1 wherein said resilient counter-fitting is composed of one of the thermoplastic materials from the group consisting of polymides, polyoxymethylenes and polyolefines.
Claim 4
Dependent Claim
29 words
The apparatus of claim 1 wherein said resilient counter-fitting is composed of one of the thermoplastic materials from the group consisting of fiberglass reinforced polyesters and fiberglass reinforced epoxydes.
Claim 5
Dependent Claim
23 words
The apparatus of claim 1 wherein said block is composed of a cast thermoplastic material from the group consisting of polymides and polyolefines.
Claim 6
Independent Claim
20 words
The apparatus of claims 1 or 2 wherein the thickness of said counter-fitting is between 2 mm and 8 mm.
Claim 7
Dependent Claim
20 words
The apparatus of claim 1 or 4 wherein the thickness of said partitions is between 0.5 mm and 2 mm.
Claim 8
Dependent Claim
15 words
The apparatus of claim 1 wherein said counter-fitting and said block are an integral unit.
Claim 9
Dependent Claim
16 words
The apparatus of claim 1 wherein said counter-fitting and said block are formed as separate units.
Claim 10
Dependent Claim
23 words
The apparatus of claim 1 wherein the ratio of the thickness of said counter-fitting to the said block is between 2:1 and 10:1.
Claim 11
Dependent Claim
22 words
The apparatus of claim 1 wherein the ratio of the thickness of said counter-fitting to the walls of said block is 4:1.
References Cited (Backward Citations)
FR1221285A
Cited
US3690710A
Cited
US3746383A
Cited
FR2166538A5
Cited
US3854765A
Cited
US4029350A
Cited
US4105236A
Cited
US3933387A
Cited
US4072334A
Cited
US4061384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-18 | 1986-04-19 | 1986-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-18 | 1990-04-19 | 1990-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-18 | 1994-04-19 | 1994-10-19 | $7700.00 | Window Closed / Lapsed |