Brakes – With condition indicator – Electrical
Patent
1979-05-02
1981-04-21
Halvosa, George E. A.
Brakes
With condition indicator
Electrical
188266, 188298, 188322, 293133, 293134, F16D 6300
Patent
active
042627788
ABSTRACT:
PCT No. PCT/FR78/00007 Sec. 371 Date May 2, 1979 Sec. 102(e) Date May 2, 1979 PCT Filed Jul. 7, 1978 PCT Pub. No. WO79/00124 PCT Pub. Date Mar. 22, 1979
The bumper device which is the object of the invention relates principally to the absorption of high energy impacts which can be sustained by all types of moving bodies or vehicles and in particular by cars.
In its preferred embodiment, the device comprises one or more capacities usually arranged at the front of the vehicle and containing a hydraulic fluid. Each of these capacities is connected by a pipe to a receiving chamber which can be deformed by expansion and is also filled with fluid. Under the influence of a violent impact, these capacities crush and eject the fluid which they contain towards the receiving chambers, the walls of which dilate in proportion to the entry of the fluid. The plastic deformation of these walls absorbs the energy of the impact.
This device is more particularly suited to the production of high absorption bumpers for cars and preferably comprises receiving chambers made of austenitic steel with unstable austenite.
REFERENCES:
patent: 2412885 (1946-12-01), Harmon
patent: 2919883 (1960-01-01), Murphy
patent: 3428150 (1969-02-01), Muspratt
patent: 3588159 (1971-06-01), Duckett et al.
patent: 3695665 (1972-10-01), Matsuura
patent: 3923292 (1975-10-01), Madden, Jr.
patent: 3975006 (1976-08-01), Peterson
Halvosa George E. A.
Ugine Aciers
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