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. 02, 1981
Filed:
May. 30, 1979
Motoshiro Hirato, Hitachi-shi, Ibaragi-ken, JP;
Hazime Kawagoe, Hitachi-shi, Ibaragi-ken, JP;
Kazuo Abe, Hitachi-shi, Ibaragi-ken, JP;
Tsuyoshi Sato, Takahagi-shi, Ibaragi-ken, JP;
Yasuhiko Miyake, Hitachi-shi, Ibaragi-ken, JP;
Masahiro Nagai, Hitachi-shi, Ibaragi-ken, JP;
Katsuhisa Furuichi, Matsudo-shi, Chiba-ken, JP;
Kiyoshi Shimojima, Hitachi-shi, Ibaragi-ken, JP;
Other;
Abstract
A rod in the form of a composite metal wire having a harder metal core surrounded by a softer metal cladding is introduced together with lubricant into a die comprising an approach which includes a first frustoconical opening defining a vertical angle between 0.degree. and 5.degree. (exclusive of 0.degree.) and a second frustoconical opening defining a vertical angle between 6.degree. and 20.degree.. The lubricant is pressurized in the first frustoconical opening of the die approach while the rod is drawn under fluid lubrication.