Device for damping a perpendicularly oscillating mass

Details Device for damping a perpendicularly oscillating mass Device for damping a perpendicularly oscillating mass

1976-01-14

1977-05-17

Reger, Duane A.

Brakes

Internal-resistance motion retarder

Piston having a restrictable opening in a fixed volume chamber

188 1B, 188272, F16F 9348

Patent

active

040236579

ABSTRACT:
A device for damping a perpendicularly oscillating primary mass comprising a perpendicularly oscillatory reference mass supported by a piston in a pressure fluid chamber of an adjusting member. The pressure in the fluid chamber compensates for the weight of the reference mass and varies as a result of reference mass oscillation. Upon reduction of the prevailing pressure the fluid chamber receives fluid from a first pressure line through an automatic inlet valve, and upon increase of the prevailing pressure the fluid chamber emits fluid into a first return line through an automatic outlet valve, so as to impose on the adjusting member an oscillatory movement tending to reduce the vertical movement of the primary mass. The adjusting member forms a second piston in a follow-up cylinder to which the primary oscillating mass is connected. A third piston defining the closure element of a shuttle valve also in the follow-up cylinder and connected to the first piston, serves to select the supply of pressure fluid to and release of said fluid from the follow-up cylinder respectively through a second pressure line and a second return line.

REFERENCES:
patent: 1522243 (1925-01-01), Hughes
patent: 2937865 (1960-05-01), Patterson
patent: 2966124 (1960-12-01), Casey
patent: 3091307 (1963-05-01), Tiedemann et al.
patent: 3638885 (1972-02-01), Reed
patent: 3701499 (1972-10-01), Schubert et al.

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