Hydraulic anti-vibration devices

Details Hydraulic anti-vibration devices Hydraulic anti-vibration devices

1991-12-10

1993-12-14

Oberleitner, Robert J.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

267 35, F16M 500

Patent

active

052694984

ABSTRACT:
The hydraulic anti-vibration device comprises: an annular rigid endpiece (1) about a vertical axis (X); a rigid stud disposed coaxially with the endpiece; a frustoconical annular wall (3) made of elastomer that withstands axial compression and that is interposed between the endpiece and the stud; a watertight flexible membrane (4); a rigid intermediate partition (5) dividing the assembly into a working chamber (A) and a compensation chamber (B); a throttled passage (6) between the chambers; and a mass of liquid (L) filling the chambers and the passage, the stud being disposed inside the working chamber and constituting the head (2.sub.1) of a suspension rod (2), and the downwardly flared annular wall (3) extending upwards inside the bottom annular portion (12) of the working chamber. At least the bottom of said bottom annular portion is provided with at least one flexible blade-like obstacle (13).

REFERENCES:
patent: 4079585 (1988-10-01), Behrens et al.
patent: 4783063 (1988-11-01), Probst et al.
patent: 4984777 (1991-01-01), Kurr et al.
patent: 5024461 (1991-06-01), Miyakawa et al.

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