Impact damping unit

Details Impact damping unit Impact damping unit

1990-06-07

1991-11-12

Oberleitner, Robert J.

Brakes

Internal-resistance motion retarder

Having a thrust member with a variable volume chamber

188269, 267 6426, F16F 922, F16F 906, F16F 936

Patent

active

050640305

ABSTRACT:
According to an illustrative example of the invention, an impact damper comprises two telescopically arranged tubes. Working chambers are defined within the tubes, and a fluid is contained within the tubes. The fluid biases the tubes towards a relative rest position. This rest position is defined by abutments of both tubes. In case of impact, the tubes are moved with respect to each other, and damping fluid is urged through a damping orifice between adjacent working chambers. In case of excessive temperature, the pressure of the fluid within the telescopic tubes is raised so that the pressure of the damping fluid is also raised. This raising pressure may result in a metallic sealing through abutment of the tubes. This metallic sealing may prevent the escape of damping fluid such that the pressure can rise up to a dangerous level. For limiting the pressure rise, an emergency escape passage is provided across the location of abutment.

REFERENCES:
patent: 3993294 (1976-11-01), Wossner et al.
patent: 4856762 (1989-08-01), Selzer

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