US4183574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forward longitudinal bearer constructed as closed hollow bearer
Assignee: Daimler Benz AG
•
Filing: 1977-04-22
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Granted: 1980-01-15
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Expires: 1997-04-22
Abstract
Abstract A forward longitudinal bearer of a motor vehicle constructed as closed, hollow bearer with an impact-near energy-absorbing part which is so composed section-wise that three series-connected zones result, of which the center zone is located within the area of aggregate support points and exceeds the two adjoining zones as regards their rigidity by the use of materials of increased strength and/or greater wall thickness.
Inventors
- 👤 Wolfgang Klie
- 👤 Hermann Renner
- 👤 Dieter Weidemann
- 👤 Helmut Weisshappel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:13
CPC Classifications
B; B62; B62D; B62D25/00; B62D25/08; B62D21/00; B62D21/15; B62D21/152; B62D25/082
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
137 words
A forward longitudinal bearer of a motor vehicle constructed as a substantially closed, hollow bearer with an impact-near energy-absorbing part, characterized in that the forward longitudinal bearer is interposed between a bumper of the motor vehicle and a passenger space of the vehicle, the longitudinal bearer is divided into at least three individual sections and is assembled in such a manner so as to provide three series-connected zones with a first zone having a predetermined deformation area being arranged at a forward end of the longitudinal bearer in an area of the bumper, a second zone arranged in an area of the passenger space, and a center zone located within an area of support points for vehicle aggregates, and in that the center zone has a rigidity which exceeds a rigidity of the first and second zones.
Claim 2
Dependent Claim
137 words
A forward longitudinal bearer of a motor vehicle constructed as a substantially closed, hollow bearer with an impact-near energy-absorbing part, characterized in that the forward longitudinal bearer is interposed between a bumper of the motor vehicle and a passenger space of the vehicle, the longitudinal bearer is divided into at least three individual sections and is assembled in such a manner so as to provide three series-connected zones with a first zone having a predetermined deformation area being arranged at a forward end of the longitudinal bearer in an area of the bumper, a second zone arranged in an area of the passenger space, and a center zone located within an area of support points for vehicle aggregates, and in that the center zone has a rigidity which exceeds a rigidity of the first and second zones.
Claim 3
Dependent Claim
48 words
A longitudinal bearer according to claim 1, characterized in that the center zone is constructed of a material having a higher strength then the material of the first and second zones so that the rigidity of the center zone exceeds the rigidity of the first and second zone.
Claim 4
Dependent Claim
52 words
A longitudinal bearer according to claim 1, characterized in that walls of the hollow bearer in the center zone have a greater thickness than walls of the hollow bearer in the first and second zones so that the rigidity of the center zone exceeds the rigidity of the first and second zone.
Claim 5
Dependent Claim
23 words
A longitudinal bearer according to claim 1, characterized in that the individual sections providing the three zones are detachably connected with one another.
Claim 6
Dependent Claim
38 words
A longitudinal bearer according to claim 4, characterized in that the zone on a side of the passenger space has an open profile and is rigidly connected with another part of the vehicle to form a closed bearer.
Claim 7
Dependent Claim
18 words
A longitudinal bearer according to claim 5, characterized in that said another part is a vehicle fire wall.
Claim 8
Dependent Claim
16 words
A longitudinal bearer according to claim 5, characterized in that said another part is a subfloor.
Claim 9
Dependent Claim
41 words
A longitudinal bearer according to claim 5, characterized in that at least one of the three zones is provided with a profile open with respect to a correspondingly coordinated wheel casing panel and is rigidly connected with the wheel casing panel.
Claim 10
Dependent Claim
48 words
A longitudinal bearer according to claim 8, characterized in that the center zone is constructed of a material of a higher strength than the material of the first and second zones so that the rigidity of the center zone exceeds the rigidity of the first and second zones.
Claim 11
Dependent Claim
52 words
A longitudinal bearer according to claim 9, characterized in that walls of the hollow bearer in the center zone have a greater thickness than walls of the hollow bearer in the first and second zones so that the rigidity of the center zone exceeds the rigidity of the first and second zones.
Claim 12
Dependent Claim
38 words
A longitudinal bearer according to claim 1, characterized in that the zone on a side of the passenger space has an open profile and is rigidly connected with another part of the vehicle to form a closed bearer.
Claim 13
Dependent Claim
17 words
A longitudinal bearer according to claim 11, characterized in that said another part is a fire wall.
Claim 14
Dependent Claim
16 words
A longitudinal bearer according to claim 11, characterized in that said another part is a subfloor.
Claim 15
Dependent Claim
101 words
A forward longitudinal bearer of a motor vehicle constructed as a substantially closed, hollow bearer with an impact-near energy-absorbing part, characterized in that the longitudinal bearer is assembled section-wise in such a manner that three series-connected zones result, of which the center zone is located within the area of aggregate support points and has a degree of rigidity which exceeds a rigidity of the first and second zones, and in that at least one of the zones is equipped with a profile open with respect to a correspondingly coordinated wheel casing panel and is rigidly connected with said wheel casing panel.
Claim 16
Dependent Claim
101 words
A forward longitudinal bearer of a motor vehicle constructed as a substantially closed, hollow bearer with an impact-near energy-absorbing part, characterized in that the longitudinal bearer is assembled section-wise in such a manner that three series-connected zones result, of which the center zone is located within the area of aggregate support points and has a degree of rigidity which exceeds a rigidity of the first and second zones, and in that at least one of the zones is equipped with a profile open with respect to a correspondingly coordinated wheel casing panel and is rigidly connected with said wheel casing panel.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-14 | 1983-07-16 | 1984-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-14 | 1987-07-16 | 1988-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-14 | 1991-07-16 | 1992-01-15 | $7700.00 | Window Closed / Lapsed |