Spring devices – Vehicle – Comprising compressible fluid
Patent
1989-06-27
1990-04-10
Pedder, Dennis H.
Spring devices
Vehicle
Comprising compressible fluid
267116, 188280, 188297, 18832215, 293133, 293134, 137 681, 137 71, B60R 1932, B60R 1934
Patent
active
049153633
ABSTRACT:
An impact damper for a motor vehicle comprises two fluid chambers. These fluid chambers are interconnected by a fluid passage. In case of an impact of the motor vehicle against an obstacle, the fluid flows from one fluid chamber to the other fluid chamber through the throttled passage. If the impact occurs with a high velocity beyond a predetermined velocity, the impact damper behaves like a rigid body. It may therefore occur that the vehicle is damaged to a higher degree than it would in case of lack of the impact damper. For preventing such situation, the passage is provided by perforated and sandwiched discs. One disc acts as a support disc, one other disc acts as a throttling disc. The throttling disc is provided with a weakening line and is broken at a predetermined pressure different between the two fluid chambers. After rupture has occurred, the flow resistance through the passage is reduced and therefore the rigid behavior of the impact damper is eliminated.
REFERENCES:
patent: 3993294 (1976-11-01), Wossner et al.
patent: 4003454 (1977-01-01), Wossner
patent: 4426109 (1984-01-01), Fike, Jr.
Christel Werner
Prozeller Ernst
Acha-Ngwodo Obele
Fichtel & Sachs AG
Pedder Dennis H.
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