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:
Dec. 02, 1997
Filed:
Mar. 22, 1996
Takashi Kimura, Kiryu, JP;
Ogura Clutch Co., Ltd., , JP;
Abstract
An armature assembly (4 or 15) for an electromagnetic coupling device has a stop plate (9), rubber dampers (11) and an armature (12). Stop plate (9), which is formed in a press from a single steel plate, has a boss (9b), flanges (9c) and a periphery wall (9a). The periphery wall (9a) reinforces the stop plate (9) and forms damper covers (9e) on the ends of the flanges (9c). The damper covers (9e) have a wall surface (9d) that surrounds the damper chamber except for an opening on one side of the damper cover facing toward the boss (9b). A rubber damper (11) with a torque pin (10) is mounted in each damper cover (9e). An armature (12) is secured to the torque pins (10) by staking. The opening in one side of the damper cover permits the rubber damper 11 adjacent to the opening to move toward the torque pin (10) when that portion of the rubber damper is subjected to a tension force. This movement of the rubber damper (11) reduces the maximum stress in the damper and increases damper life.