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. 21, 1995
Filed:
Oct. 18, 1994
Applicant:
Inventors:
Josef Obermeier, Peiting, DE;
Ulrich Muller-Boysen, Deizisau, DE;
Siegfried Keusch, Deizisau, DE;
Peter Gaffal, Deizisau, DE;
Assignee:
Hilti Aktiengesellschaft, Schaan, LI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25D / ; E21C / ;
U.S. Cl.
CPC ...
175209 ; 55521 ; 173 75 ; 408 67 ;
Abstract
A drilling or chiseling tool includes a suction apparatus (8) releasably mounted on a housing (1) of the tool. The suction apparatus (8) contains a replaceable separating device (11) formed of a housing (13) subdivided into two separate chambers (K1, K2) by a filter element (14) replaceably fitted in the housing. Each chamber (K1, K2) has an aperture (12, 15) and the cross-sections of the apertures extend at right angles to one another.