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:
Dec. 21, 1982
Filed:
May. 05, 1980
Donald A Olsen, Millis, MA (US);
Henry J Boulanger, Cumberland, RI (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A time delay relay has a switch assembly, a spring terminal assembly, and an electrical resistance heater unit of an inexpensive construction held together in a reliable and economical manner by a pair of easily mounted metal spring clips. The clips have opposite ends each securely hooked over portions of the terminal assembly and resiliently engaged with respective, oppositely-facing surfaces of the switch and terminal assemblies so that the heater unit is firmly held in a predetermined position in the relay with opposite electrical poles of the unit resiliently engaged with respective terminals in the terminal assembly for directing electrical current through the heater, so that a thermally-responsive dished thermostatic disc is disposed in close heat-transfer relation to the heater unit at a location where it is free to move at a precisely predetermined temperature as it is heated by the heater unit, and so that a motion transfer pin is guided for free movement in response to the disc movement to provide snap-acting opening and closing of electrical contacts in the switch assembly.