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:
May. 14, 1985
Filed:
Oct. 18, 1982
Hemming G Siiberg, New Providence, NJ (US);
Edison International Inc., Rolling Meadows, IL (US);
Abstract
A temperature and voltage compensated time delay relay includes first and second bimetallic, contact carrying elements chosen to deflect in a similar manner in accordance with variations in ambient temperature for maintaining the contact gap therebetween substantially constant despite ambient temperature changes. A heater coil is wrapped about a first one of the elements (active element) for controlling the deflection thereof toward the second element (stationary element) for closing the contacts of the elements in a predetermined time period. An automotive flasher circuit having normally closed contacts and a flashing rate 'on' time which varies inversely proportionally with an increase in supply voltage, is coupled electrically between the supply voltage and bimetallic element heating coil to control and keep relatively constant the rate of heat rise in the active bimetallic element and thus to maintain the time delay period of the relay relatively constant.