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:
Nov. 20, 2001
Filed:
Mar. 06, 2000
Applicant:
Inventor:
Takao Tsukada, Tokyo, JP;
Assignee:
Max Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F01B 1/102 ; B23B 4/516 ; B25C 1/04 ;
U.S. Cl.
CPC ...
F01B 1/102 ; B23B 4/516 ; B25C 1/04 ;
Abstract
A bumper for braking an impact piston is disposed at a lower part of an impact clinder for sidably housing the impact piston. The impact piston has a driver for driving a fastener and having a cylindrical shape at its upper portion. The bumper includes an upper part having a transverse section of an annulus ring the inner surface of which has a size to form a void been the inner surface and an outer surface of the upper portion of the driver, and a top surface for receiving the impact piston. The top surface has all outer diameter of the same size as that of the impact piston.