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:
May. 29, 2001
Filed:
Dec. 07, 1998
Erlen B. Walton, Famington Hills, MI (US);
David M. Preston, Clarkston, MI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A center differential (,) including a clutch pack (,), a cam ramp actuator (,) for moving the friction discs (,) toward an engaged position, and a viscous coupling (,) which will have a “slip speed” representative of the speed difference between the front (,) and rear (,) wheels. There is a one-way clutch (,) disposed between the output (,) of the viscous coupling (,) and the first ramp plate (,) to transmit positive torque when the vehicle is in a forward gear, but negative torque is not transmitted, for example, during braking. An override mechanism (,) is provided, including a plurality of spring biased pins (,), such that, below a predetermined speed of rotation, positive torque can also be transmitted when the vehicle is in reverse gear. The pins (,) are associated with flyweight members (,) so that, above the predetermined speed, the pins are disengaged, and positive torque can be transmitted only in forward gear.