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:
Jan. 28, 1992
Filed:
Oct. 01, 1990
Theodore V Lester, Schiller Park, IL (US);
Jerry D Meyerhoff, Buffalo Grove, IL (US);
Loren E Saar, Elmwood Park, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A controllable fuse (10; 40; 50; 60; 80) has a pair of isolated conductor pads (26, 27), a solder connection (32; 41; 51) connected to the pads and providing a circuit connection therebetween, and at least one heater (14; 70, 75) to produce heat in response to an electrical signal. When sufficient heat is provided, the solder connection will desolder and disconnect the circuit connection between the conductor pads (26, 27). Major features are that the conductor pads and the heater are provided on a planar surface(s) (19, 25) as planar films and that redundancy for the fuse can be implemented by providing more than one heater (70, 75). A preferred manufacturing method for the fuse is disclosed which utilizes a solder retaining structure. Several fuse configurations are illustrated.