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:
Feb. 25, 1992
Filed:
May. 31, 1990
Applicant:
Inventors:
Raymond D Zoellick, Bothell, WA (US);
Peter F Barbee, Woodinville, WA (US);
Assignee:
John Fluke Mfg. Co., Inc., Everett, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
439487 ; 361387 ;
Abstract
An isothermal block has a multi-layer thermal conductor interleaves with different layers of a printed circuit board to provide improved thermal coupling of input terminals and a local temperature sensor mounted on the isothermal block. Each of the layers of the thermal conductor is substantially thinner than substrate layers of the printed circuit board. The layers of the thermal conductor are spaced apart from the terminals so as to be electrically isolated from the terminals. Embedded layers of the thermal conductor are spaced closer to the terminals than are external layers of the thermal conductor.