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. 01, 1991
Filed:
Jul. 16, 1990
Norman E Zerndt, Palatine, IL (US);
Cyril E Bradshaw, Wheaton, IL (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A two-position motorized servo actuator with automatic motor shut off at either position. The user remotely energized the motor with a two-position switch and the motor drives in rotation a floating lead screw journalled for both rotational and axial movement. A follower traverses the lead screw during rotation; and, a lever means moved by the follower is operative to perform a desired function, such as for example, open and close a valve. Upon the follower contacting a travel limit stop, the motor continues rotation of the lead screw which moves axially by threaded advancement in the follower, and the axial movement of lead screw is operative to toggle a switch and reverse the polarity of the power to the motor. If the motor is remotely energized, for reverse rotation by user movement of the two-position switch to its opposite position, the servo will operate to drive the follower to an opposite limit position.