Elastic bushing employing an inertial column of damping fluid

Details Elastic bushing employing an inertial column of damping fluid Elastic bushing employing an inertial column of damping fluid

1990-04-09

1992-01-14

Halvosa, George E. A.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

180312, 248562, 248636, 267219, F16F 1300

Patent

active

050803310

ABSTRACT:
Elastic bushing with hydraulic damping of radial elasticity by circulation of liquid between two chambers opposite one another connected by a very long annular passage located in the round exterior fastening armature. A rigidity decoupling, over a short stroke, is provided by the deformation of a thin wall in each chamber. One side of the thin wall has air thereagainst and the other side has a damping liquid thereagainst. On the air side of the thin wall, movement is limited by an internal fastening ring, and on the liquid damping side by contact with a comb integrated in said internal fastening ring. Application of the bushing is in the fields of mountings for an automobile engine and similar uses.

REFERENCES:
patent: 4705410 (1987-11-01), Broock
patent: 4781361 (1988-11-01), Makibayashi
patent: 4893799 (1990-01-01), de Fontenay
patent: 4909489 (1990-03-01), Doi
SAE Technical Paper Series No. 86-1412, "Optimum Application for Hydroelastic Engine Mount", 9/22-25/1986.

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