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:
Sep. 02, 1986
Filed:
Jul. 16, 1984
Warren G Bopp, Farmington Hills, MI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A mechanism (19) disposed in a torque converter housing (24) for damping torsionals in a vehicle driveline. The mechanism comprises a viscous coupling (22) including a housing (64) having two sidewalls (24a, 68) defining a chamber (70) containing a viscous liquid, and a clutch member (72) disposed in the chamber for viscous clutching coaction with the housing. One of the sidewalls (24a) is defined by an end wall of the torque converter housing. The housing and clutch member are interconnected by a spring assembly (20) including flat torsion springs (61, 62) which transmit steady-state driveline torque and isolate driveline torsionals. The inner surfaces (24b, 68a) of the housing each include two circumferentially spaced clutching surfaces separated by the clutch member. The clutch member has oppositely facing surfaces (72b, 72c) each which include two flat circumferentially spaced clutching surfaces. When the clutching surfaces of the housing are disposed opposite the clutching surfaces of the clutch member, the clutching coaction therebetween is a maximum. When the clutching surfaces of the housing are disposed opposite the spaces between the clutching surfaces of the clutch member, the clutching coaction is a minimum. In a modified embodiment, the attachment of springs (61', 62') is modified to provide the mechanism with two spring rates, and the clutch member (72') is connected into the driveline via a loose spline arrangement (72a', 84f') to allow a limited relative rotation between the input and output of the damping mechanism without viscous damping.