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. 13, 2004
Filed:
May. 13, 2003
Yoshio Sato, Ayase, JP;
Yoshiyuki Sasaki, Ayase, JP;
Obara Corporation, Kanagawa-ken, JP;
Abstract
A driving unit for a pressure application shaft in a welding apparatus including a housing for housing therein a ball screw mechanism for converting rotation of an output shaft of a motor into reciprocating motion of the pressure application shaft, and a direct acting type rolling guide mechanism provided between the pressure application shaft and the housing. The housing includes a housing body which is opened at one side, and a plate for covering the opened portion. The ball screw mechanism, the pressure application shaft member, the rolling bearing which is fixed to the pressure application shaft member, and a rail combined with the rolling bearing are fixed to the housing body.