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. 27, 2009
Filed:
Dec. 07, 2005
Masao Teraoka, Tochigi, JP;
Masao Teraoka, Tochigi, JP;
GKN Driveline Torque Technology KK, Tochigi-shi, JP;
Abstract
The torque transmission apparatus is simple, small and light and has a clutch unit to receive thrust and transmit torque between rotary members, a differential screw mechanism to convert rotational force into the thrust applied to the clutch unit, and an electric motor to produce the rotational force. The differential screw mechanism has a driving screw and driven screws. The driving screw is rotatably and axially movably supported on a rotary drive shaft of the electric motor. The driven screws mesh with the driving screw and are rotatably and axially immovably supported. The meshing driving screw and driven screws are rotated to axially move the driving screw and apply engaging force to the clutch unit.