Torsion isolator with active counterweight

Details Torsion isolator with active counterweight Torsion isolator with active counterweight

1994-05-02

2000-01-04

Walsh, Donald P.

Rotary shafts, gudgeons, housings, and flexible couplings for ro

Torque transmitted via flexible element

Element is an open loop spring curved about rotational axis

464 51, 464 87, B60K 4116

Patent

active

060104082

ABSTRACT:
A torsion isolator (34) for transmitting torque and dampening torsionals in a driveline. The isolator includes a composite c-shaped spring (48) disposed in an annular chamber (44) of a housing (38,40) filled with torque converter fluid. The spring transmits driveline torque and attenuates torsionals. The spring also functions as a fluid displacement piston by dividing the chamber into radially inner and outer volumes (44a,44b) which vary inversely in volume in response to torque changes flexing the spring. Rapid flexing of the spring increases the fluid pressure in the decreasing volume and thereby dampens or reduces the rate of spring flexing or rebound.

REFERENCES:
patent: 1751228 (1930-03-01), Bethel
patent: 2019198 (1935-10-01), Spase
patent: 4148200 (1979-04-01), Schallhorn et al.
patent: 4790793 (1988-12-01), Bacardit
patent: 5049111 (1991-09-01), Jumel et al.
patent: 5219431 (1993-06-01), Stretch
patent: 5240457 (1993-08-01), Leichliter et al.

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