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:
Apr. 30, 1996
Filed:
Apr. 28, 1994
Timothy R Block, Rochester, MN (US);
David P Gaio, Rochester, MN (US);
Charles J Guenther, Rochester, MN (US);
Dennis L Karst, Kasson, MN (US);
Thomas D Kidd, Stewartville, MN (US);
Michael W Leddige, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Attachment of electronics to optical devices is made by supporting the optical devices on a heat spreader card and the electronics on a separate circuit card. Each card has at least a first major surface, with an optical transducing subassembly mounted perpendicularly from the major surface of the heat spreader card. Electronics, except for transducing elements, are placed on the circuit card. The only direct attachment between the circuit card and the heat spreader card is one or more flexible cables attached to the respective major surfaces. This arrangement mechanically isolates the circuit card from the heat spreader card. The flexible cables include electrical conductors held positionally in a polyimide matrix, which provides for thermal isolation of the heat spreader card and the circuit card.