Torsion isolator spring with pivotal ends

Rotary shafts – gudgeons – housings – and flexible couplings for ro – Torque transmitted via flexible element – Element is an open loop spring curved about rotational axis

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464 51, 464 87, B60K 4116

Patent

active

055779638

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: 3283538 (1966-11-01), Trefny
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: 5234377 (1993-08-01), Stretch et al.
patent: 5240457 (1993-08-01), Leichliter et al.
patent: 5364308 (1994-11-01), Vollet
patent: 5370580 (1994-12-01), Vollet

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