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:
Sep. 09, 1997
Filed:
Aug. 27, 1996
Applicant:
Inventors:
Markus Frommelt, Schaan, LI;
Norbert Heeb, Buchs, CH;
Assignee:
Hilti Aktiengesellschaft, Schaan, LI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F41C / ;
U.S. Cl.
CPC ...
42106 ; 42 7008 ; 42 6902 ;
Abstract
An explosive powder charge operated setting tool includes a driving piston (1) positioned in an axially extending piston guide (4) with a base surface (5) at a trailing end of the piston guide. A spacer (2) is located on the trailing end surface of the piston (1) and projects axially from its trailing end surface. The spacer (2) has a stop face (3) extending perpendicularly of the piston guide axis with a surface area smaller than the area of the base surface (5) against which it contacts.