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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.:

US 4187711 B1

PDFFull Text
Date of Patent:
Feb. 12, 1980

Filed:

Jul. 24, 1978

Method and apparatus for producing a high fin density extruded heat

Applicant:
Inventors:

Ronald B Lavochkin, Newton, MA (US);

Thomas D Coe, Boxford, MA (US);

Assignee:

Wakefield Engineering, Inc., Wakefield, MA (US);

Attorneys:

Cadwallader; Ralph L.

Kelly; Leo M.

Primary Examiner:

Francis S Husar

Assistant Examiner:

D M Gurley

Int. Cl.
CPC ...
B21C / ; B21C / ; B21D / ; B21D / ;
U.S. Cl.
CPC ...
72256 ; 7225 / ; 72183 ; 72302 ; 72378 ; 72303 ; 72467 ; 72702 ; 29DI / ;
Abstract

A method of manufacturing a high fin density heat dissipator is disclosed in which the dissipator is extruded through a die in a partially cylindrical shape with the elongated fins arranged on the base and extending radially therefrom. The extruded dissipator is straightened under tensile and bumping forces in a manner such that the base assumes a planar shape and the fins become substantially parallel to each other. Apparatus for straightening the extruded dissipator and a die for extruding the same are illustrated and described.

Find Patent Forward Citations

Lavochkin, Ronald. (1980). Method and apparatus for producing a high fin density extruded heat (U.S. Patent No. 4187711). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4187711

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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