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. 23, 1984
Filed:
Apr. 19, 1983
Robert T Basnett, Hendersonville, NC (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
Contact overtravel adjustment apparatus for a vacuum contactor. Two nuts, each having a plurality of radially spaced teeth about their periphery, are threaded onto the mounting stud or shaft of the moveable contact of each vacuum interrupter in the contactor. The first nut is positioned on the shaft to establish the contact overtravel gap. The second nut is used to lock the position of the first nut. A blade of a screwdriver is inserted between adjacent teeth in both nuts. Rotation of the screwdriver in one direction locks the two nuts while the rotation thereof in the opposite direction loosens the two nuts. The teeth allow the torque used for tightening to be applied to the nut with zero net torque being applied to the shaft of the moveable contact of the vacuum interrupter. The toothed nuts also provide for a more accurate setting of the overtravel gap adjustment.