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:
Jun. 25, 2019
Filed:
May. 27, 2016
Toyota Boshoku Kabushiki Kaisha, Aichi-ken, JP;
Kazuyuki Hirata, Toyota, JP;
TOYOTA BOSHOKU KABUSHIKI KAISHA, Aichi-ken, JP;
Abstract
A heat sink having a base and a projecting portion that extends from the base is manufactured by cold pressing a metal component. In the first process, a preparatory compact is formed by pressing the metal component with a first die including a first die block and a first punch. The preparatory compact has a depression on a surface of the metal component that faces the first punch and a protrusion on a surface of the metal component that faces the first die block. In the second process, by pressing the preparatory compact with the second die including a second punch and a second die block, the depression is crushed and the protrusion is pushed out toward the back of the hole of the second die block to form the projecting portion.