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. 13, 1989
Filed:
Sep. 28, 1987
Applicant:
Inventor:
Takashi Dainin, Higashiosaka, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25B / ;
U.S. Cl.
CPC ...
81465 ; 81466 ; 81463 ; 173 935 ;
Abstract
An improved hydraulic pulse wrench provided with a hydraulic pulse generator has a liner, an anvil rotatably mounted in the liner and having a longitudinal slit, and two blades loosely mounted in the longitudinal slit. The liner has an elliptic hole. The two blades have their outer edges beveled in different directions. The anvil has a pair of axial ridges and the liner has on its inner periphery a total of five axial ridges. The blades, anvil and liner cooperate with one another to form pressure chambers while the liner is rotated.