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:
Aug. 04, 1992
Filed:
Feb. 14, 1990
William J Kaigler, North Huntingdon, PA (US);
Thomas M Buckshaw, Indiana, PA (US);
David T Llewellyn, Ebensburg, PA (US);
Robertshaw Controls Company, Richmond, VA (US);
Abstract
A pressure operated switch construction and method of making the same are provided, the pressure operated switch construction comprising a housing having an external surface and carrying an electrical switch unit and a diaphragm assembly therein, the housing having an opening passing through the external surface thereof, the electrical switch unit having opposed sides and an opening passing therethrough in alignment with the opening of the housing, and a compression spring unit carried by the housing and being operatively associated with the electrical switch unit and the diaphragm assembly to control the operation thereof in relation to the compression setting of the compression spring unit, the compression spring unit comprising a retainer operatively interconnected to the electrical switch unit, an actuator carried by the housing and a compression spring having opposed ends respectively bearing against the actuator and the retainer, the retainer having an intermediate part disposed in the opening of the housing and having a surface and a projection extending from the surface and passing through the opening of the electrical switch unit in one direction so that the surface thereof faces one of the sides thereof whereby the retainer is removable from the electrical switch unit by merely moving the retainer in the direction opposite to the one direction.