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. 25, 1986
Filed:
Jul. 01, 1985
Applicant:
Inventors:
Iwaji Shiomi, Tokyo, JP;
Toshio Mikiya, Tokyo, JP;
Assignee:
Nitto Kohki Co., Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23B / ;
U.S. Cl.
CPC ...
408 56 ; 408 68 ; 408204 ; 408209 ;
Abstract
A pilot pin-locking means for a drilling machine including a drilling tool, a hollow shaft for supporting the drilling tool and provided with a lubricating means, a bearing means mounted on the drilling machine, the shaft being supported by the bearing means for vertical movement and rotation about an axis, further including a pilot pin inserted through the center of the drilling tool for vertical movement. The hollow shaft receives an engaging means that engages the pilot pin under the resilient action of a spring in a vertically movable manner. The engaging means is detachably locked to and biased against the inner face of the hollow shaft.