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:
Mar. 13, 2001
Filed:
Mar. 16, 2000
Michael A. Logsdon, Wausau, WI (US);
Duane R. Nolte, Wausau, WI (US);
Marathon Electric Manufacturing Corportion, Wausau, WI (US);
Abstract
A centrifugal actuator for operating a motor start winding switch includes a base fixed to the shaft as a bearing shoulder and a hub slidably mounted to the base by a groove mating projection and grooves. The hub has a flange which actuates the switch. The hub and base include stops which limit the hub travel. Diametrically opposite hinge units on the base receive offset pivot arms including a pivot rod held in the unit by weight connected coil springs. The weights are L-shaped having heavy plate and offset levers having a hinge or pivot plate therebetween. The pivot plate is offset from the plane of the levers and includes an opening forming the pivot rod having a coined pivot edge. The base hinge units have hook members within which the rod pivots. The outer tab of the hook enters the pivot plate opening in the run position to lock the weight in place. The base is secured to the shaft with an end surface to function as a shoulder for a bearing. The base is mounted with loaded portions to prevent base creeping or deflection. The base and hub are weight balanced for vertical motors. The pivot rod is located to place the pivot point of the weight at substantially the center of the mass of the weight, giving due consideration to the hub.