Attachment to hammer drills for driving in expansion shell bolts
Description
FIG. 1 is a front right perspective view of an attachment to hammer drills for driving in expansion-shell bolts, showing my new design;
FIG. 2 is a top rear perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left side elevational view thereof, the opposite side elevational view being a mirror image thereof; and,
FIG. 6 is a top plan view thereof, the bottom plan view being a mirror image thereof.
Referenced Cited
U.S. Patent Documents
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D299613 | January 31, 1989 | Laurie |
D327825 | July 14, 1992 | Oglesby et al. |
D356320 | March 14, 1995 | Catalanotti et al. |
D363011 | October 10, 1995 | Gruner et al. |
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3298449 | January 1967 | Bachman et al. |
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Patent History
Patent number: D376084
Type: Grant
Filed: Jul 18, 1995
Date of Patent: Dec 3, 1996
Inventor: Markku Karvinen (S-212 30 Malmo)
Primary Examiner: James M. Gandy
Assistant Examiner: Robert M. Spear
Law Firm: Tarolli, Sundheim, Covell, Tummino & Szabo
Application Number: 0/41,554
Type: Grant
Filed: Jul 18, 1995
Date of Patent: Dec 3, 1996
Inventor: Markku Karvinen (S-212 30 Malmo)
Primary Examiner: James M. Gandy
Assistant Examiner: Robert M. Spear
Law Firm: Tarolli, Sundheim, Covell, Tummino & Szabo
Application Number: 0/41,554
Classifications
Current U.S. Class:
D 8/70