Hydraulic anti-vibration devices

Details Hydraulic anti-vibration devices Hydraulic anti-vibration devices

1993-03-18

1994-03-29

Oberleitner, Robert J.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

26714015, 267219, F16M 100

Patent

active

052977811

ABSTRACT:
A hydraulic anti-vibration support includes a rigid frame 3, a head 1, a frustoconical elastomer wall 6 connecting the cylinder to the head, a membrane 7 carried by the cylinder, a partition 8 separating the inside of the resulting liquid-filled enclosure into a working chamber A and a compensating chamber B, a throttled passage 9 interconnecting the two chambers, a small displacement piston 12, and an electrical exciter 14 suitable for setting up counter-vibrations in the piston. An air-filled capsule 19 defined by the piston and by a rigid wall 20 secured to the frame by a slotted spacer 21 is immersed in the working chamber, the piston being disposed between the wall and the exciter, and the periphery of the piston being connected to the wall by a sealed and deformable annular gasket 23.

REFERENCES:
patent: 4650170 (1987-03-01), Fukushima
patent: 4802648 (1989-02-01), Decker et al.
patent: 4877225 (1989-10-01), Noguchi et al.
patent: 5116029 (1992-05-01), Gennesseaux

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