The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 07, 1992
Filed:
Apr. 02, 1990
Wayne K Leichliter, Marshall, MI (US);
David J Shoals, Marshall, MI (US);
John C Mann, Marshall, MI (US);
Charles S Roscoe, Battle Creek, MI (US);
Rodney H Detty, Marshall, MI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
Torsion damping isolator assemblies (19 or 100 or 200) are disposed for damping torsionals in a vehicle driveline. The assemblies include spiral springs (62 or 202, 204) and a vane damper assembly (22 or 206) disposed in parallel and immersed in automatic transmission fluid of a torque converter housing (24). Damper assemblies (22 or 206) include first and second relatively rotatable housing members (66, 68 or 208, 210). Housing members (66 or 208) are connected to radially inner ends (62b or 202b, 204b) of the springs, and members (68 or 210) are connected to radially outer ends (62a or 202a, 204a) of the springs. The housing members define chambers which vary inversely in volume in response to flexing of the spring assemblies by driveline torsionals. The chambers communication with the fluid in the torque converter housing via restricted passages (86, 88 or 220f, 220g). As the chambers vary in volume, energy from the torsionals is converted to fluid pressure in the chambers decreasing in volume. Assemblies (19 and 100) include lugs (77a) drivingly connecting the second member (68) to the torque housing. The lugs define valving members (77c, 77d) which close or partially close the passages associated with the chamber decreasing in volume. Assembly (200) includes improved mounting (228, 230) of the spring outer ends (202a, 204a) and improved mounting (238) of the spring inner ends (202b, 204b). Damper assembly (206) includes independent pistons (220) circumferentially held in position by drive lugs (226) which also function as valving members in a manner analogous to lugs (77a).