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:
Jul. 30, 1985
Filed:
Jul. 26, 1982
Manfred Frister, Schwieberdingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A rectifier for association with an automotive alternator is made by providing a support plate (1) of aluminum on which a post (2) of aluminum is secured, for example by welding (FIG. 1) or by gripping a conical or bulged surface within the thickness of the plate (1) upon deformation of the plate after introducing the bulged or double-conical post into a hole in the plate; alternatively, the plate (1) which is of aluminum, can have a copper disk (23) secured thereto, nickel-plated all over, to which the semiconductor diode chip (4) is soldered. To securely retain a casting compound surrounding the diode chip, a sleeve (7) is placed around the chip, and the surface of the plate (1) is deformed to provide for reentrant claws (38), which mechanically grip the casting compound. The diode chip (4) is preferably secured to a copper-plated surface on the post (2), for example by soldering, the post as well as the plate then being made of aluminum for intimate contact with the plate and heat transfer from the diode thereto.