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. 08, 1993
Filed:
Oct. 21, 1992
Kunio Yamamoto, Katsuta, JP;
Kaoru Ichikawa, Katsuta, JP;
Hitachi Koki Co., Ltd., Tokyo, JP;
Abstract
A driving machine having a cylinder fixing arrangement. The driving machine is used for driving a fastener such as a nail into a workpiece. For this, a cylinder-piston arrangement is provided. When the piston is driven to drive the fastener a reaction force is applied to the cylinder. To avoid displacement of the cylinder due to the reaction force, the cylinder fixing arrangement is provided. The fixing arrangement includes a detachable stop washer secured in an annular groove of the cylinder. The stop washer is partly engaged with a flange of the cylinder to prevent the cylinder from its upward displacement. Inner diametrical differences are provided in the cylinder at the position around the stop washer.