Rubber elastic engine mounts or supports with hydraulic damping

Supports – Resilient support – Including additional energy absorbing means – e.g. – fluid or...

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248634, 267113, F16M 500

Patent

active

042158427

ABSTRACT:
Elastic rubber engine mounts with hydraulic damping are provided, especially for engine suspensions in motor vehicles. The mounts comprise two separated liquid-filled chambers, defined in part by elastic rubber-like peripheral walls adheringly connected with end walls and with a centrally disposed supporting element for connection to an engine supporting frame. The liquid chambers are separated by an elastic rubber-like partition connected with the supporting element, and flow connection between the two chambers is provided by perforations or choke openings in the partition. The rigid end walls of the two chambers are ridgidly interconnected. Arrangements are provided for minimizing or avoiding hydraulic damping of oscillations of low amplitude and high frequency, while providing hydraulic damping for oscillations of large amplitude and low frequency. This is achieved by limited compensation of volume changes in the chambers, through either axially reciprocable annular members disposed in the partition and axially movable relative to the support element, or by flexible wall parts in the rigid end walls. The flexible wall parts may be in the form of diaphragms, and the diaphragms may advantageously be of foamed material. Hydraulic damping thus occurs only upon oscillations of predetermined amplitude and frequency.

REFERENCES:
patent: 1884477 (1932-10-01), Wood
patent: 2387066 (1945-10-01), Harding
patent: 2539443 (1951-01-01), Lee
patent: 2562195 (1951-07-01), Lee
patent: 2582998 (1952-01-01), Lee
patent: 3368807 (1968-02-01), Thrasher
patent: 3409050 (1968-11-01), Weese
patent: 3951379 (1976-04-01), Cornelius

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