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:
Oct. 06, 1992
Filed:
Feb. 28, 1992
Rick L Boyer, Marshall, MI (US);
Todd King, Cedarburg, WI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A fluid coupling device is disclosed of the type having an output coupling assembly (13) and an input coupling member (11). Control of the flow of viscous fluid between a reservoir chamber (35) and an operating chamber (33) is controlled by rotation of a valve arm (43), to cover or uncover a fill opening (45). Rotation of the valve arm is affected by an actuator assembly (61). An electrical signal to a coil (69) results in a flux path (FP) through a stationary ferromagnetic housing (63), with the flux passing through an armature (83) which is attached to the valve member. The flux path passes from armature segments (105) through respective pole pieces (111), which comprise part of the outer cylindrical surface of the reservoir chamber (35). Thus, energization of the coil (69) results in rotation of the valve member (43) without the need for frictional engagement of friction surfaces.