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:
Mar. 06, 1990
Filed:
Sep. 01, 1988
Lance R Kaufman, Paradise Valley, AZ (US);
Other;
Abstract
An electrical circuit assembly (2) includes a heat sink (4), a ceramic substrate (6) on top of the heat sink (4), heat generating electrical components (8), including circuit elements (10) and lead frames (12), on top of the substrate. A threaded bolt (28) extends through aligned holes (22, 18, 16, 14) in the lead frame, substrate and heat sink and is electrically isolated from the lead frame and prevents short circuiting between the lead frame and the heat sink by a ceramic washer (24) having a lower annular portion (26) extending axially downwardly in the aligned holes around the bolt and having an upper radially extended shoulder flange (27) beneath an enlarged head (32) of the bolt.