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:
Apr. 10, 2001
Filed:
May. 07, 1999
Graham T. Spencer, Troy, OH (US);
Michael P. Gardner, Lewisburg, OH (US);
Beth Van Haaren, New Carlisle, OH (US);
Process Equipment Co. of Tipp City, Tipp City, OH (US);
Abstract
An overload protection device includes a cup-shaped cap member defining a cavity receiving a cup-shaped yoke member defining a pressurized air chamber receiving a piston having a rounded end surface engaging the cap member. An annular cam member is inserted into the cap member and defines three angularly spaced V-shaped cam surfaces with center seats which receive corresponding steel balls mounted on outwardly projecting ears of the yoke member. A rigid plastic ring is mounted on the yoke member with epoxy and contacts an annular shoulder within the cam member. The yoke member carries a pair of axially adjustable and normally closed electrical contact elements which are opened by an actuator pin projecting from the piston in response to tilting and/or rotation and/or axial movement between the yoke member and cap member.