US3820835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bumper for motor vehicles
Assignee: Daimler Benz AG
•
Filing: 1972-10-06
•
Granted: 1974-06-28
•
Expires: 1992-10-06
Abstract
Abstract A bumper for motor vehicles, especially passenger motor vehicles, which is automatically displaceable in the vehicle longitudinal direction under impact action; the back side of the bumper is thereby constructed approximately shell-shaped and equipped with at least two tubularly shaped extensions which are telescopically displaceable in associated fixed vehicle parts such as, for example, vehicle longitudinal bearers; the back side of the bumper is filled with an elastic material such as polyurethane foam which, on the one hand, covered with a rigid covering projects bulge-like forwardly over the edges of the back side and, on the other, extends through the extensions up to partition walls that subdivide the vehicle longitudinal bearers.
Inventors
- 👤 K Wilfert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:56
CPC Classifications
B; B60; B60R; B60R19/00; B60R19/02; B60R19/24; B60R19/26
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
154 words
A vehicle bumper which is displaceable in a longitudinal direction of a vehicle under an impact action, said bumper comprising: a back side member having a first surface portion facing toward the vehicle and a second surface portion facing outwardly from the vehicle, said back side member having at least one opening, at least one extension means for extending from said back side member at the area of said opening to The vehicle, said vehicle having at least one respective fixed part of a hollow structure with said at least one extension means being telescopically displaceable in said fixed part, said extension means having a hollow structure, and elastic material projecting outwardly from said second surface portion of said back side member, said elastic material extending from said second surface portion through said opening in said back side member within said hollow structure of said extension means into said fixed part of the vehicle.
Claim 2
Dependent Claim
154 words
A vehicle bumper which is displaceable in a longitudinal direction of a vehicle under an impact action, said bumper comprising: a back side member having a first surface portion facing toward the vehicle and a second surface portion facing outwardly from the vehicle, said back side member having at least one opening, at least one extension means for extending from said back side member at the area of said opening to The vehicle, said vehicle having at least one respective fixed part of a hollow structure with said at least one extension means being telescopically displaceable in said fixed part, said extension means having a hollow structure, and elastic material projecting outwardly from said second surface portion of said back side member, said elastic material extending from said second surface portion through said opening in said back side member within said hollow structure of said extension means into said fixed part of the vehicle.
Claim 3
Dependent Claim
20 words
A bumper according to claim 1, characterized in that said at least one fixed part is a vehicle longitudinal bearer.
Claim 4
Dependent Claim
16 words
A bumper according to claim 1, characterized in that the elastic material is a polyurethane foam.
Claim 5
Dependent Claim
60 words
A bumper according to claim 1, wherein said back side member includes two openings, said extension means includes two tubular extension means, and said vehicle includes two fixed parts, each of said two tubular extension means extending from the area of respective ones of said two openings of said back side member to respective ones of said two fixed parts.
Claim 6
Dependent Claim
39 words
A bumper according to claim 4, wherein partition wall means are provided for subdividing each of said two fixed parts, and said elastic material extends into said respective ones of said two fixed parts to said partition wall means.
Claim 7
Dependent Claim
52 words
A bumper according to claim 5, characterized in that the back side member is constructed thick-walled, and each of said two openings are constructed approximately as funnel-shaped portions of said back side member extending transversely with a continuous curvature thereto, said funnel-shaped openings enclosing a respective end of said two extension means.
Claim 8
Dependent Claim
28 words
A bumper according to claim 6, characterized in that said ends of said extension means are pivotally connected with the transversely extending portions of said back side member.
Claim 9
Dependent Claim
28 words
A bumper according to claim 7, characterized in that said two fixed parts are reinforced by flange means at respective portions where the extension means enter the same.
Claim 10
Dependent Claim
17 words
A bumper according to claim 8, characterized in that said two fixed parts are vehicle longitudinal bearers.
Claim 11
Dependent Claim
16 words
A bumper according to claim 9, characterized in that the elastic material is a polyurethane foam.
Claim 12
Dependent Claim
24 words
A bumper according to claim 10, wherein rigid covering means are provided for covering said elastic material projecting outwardly from said second surface portion.
Claim 13
Dependent Claim
40 words
A bumper according to claim 11, wherein said back side member is a channel structure with said second surface portion being an open face of said channel structure, and said elastic material fills said open face of said channel structure.
Claim 14
Dependent Claim
20 words
A bumper according to claim 1, characterized in that said extension means are pivotally connected with said back side member.
Claim 15
Dependent Claim
34 words
A bumper according to claim 1, characterized in that the fixed part is constituted by longitudinal bearer means, and is reinforced by flange means at a portion where the extension means enter the same.
Claim 16
Dependent Claim
40 words
A bumper according to claim 1, wherein said back side member is a channel structure with said second surface portion being an open face of said channel structure, and said elastic material fills said open face of said channel structure.
Claim 17
Dependent Claim
15 words
A bumper according to claim 1, wherein said extension means is of a tubular construction.
Claim 18
Dependent Claim
24 words
A bumper according to claim 1, wherein rigid covering means are provided for covering said elastic material projecting outwardly from said second surface portion.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |