Cutlery – Perforating or indenting implements – Pointed
Patent
1993-04-13
1995-06-27
Seidel, Richard K.
Cutlery
Perforating or indenting implements
Pointed
30358, 81463, B26F 100
Patent
active
054268583
ABSTRACT:
An combination center punch and prick punch impact hand tool 10 has a center punch member 14 with an elongated center punch body 16 extending from a tool tip 20 to an anvil surface 24 at a rear end 22. The hand impact tool 10 has a prick punch member 40 with an elongated forward end 44 having an anvil surface 46 for engaging the anvil surface 24. An elongated coil spring 60 has reduced diameter spring ends 64 and 66 mounted in corresponding spring latching grooves 28 and 54, respectively. Each of the members 14 and 40 have finger gripping sections 26 and 52 that are formed with a series of annular grooves 80 forming finger rings 82 for enabling the user to easily grip and hold the tool member 14 during the operation of the tool and the expansion of the coil spring prior to the release of the prick punch member 40. Upon release of the prick punch member, the anvil surface 46 of the forward end 44 is driven into the anvil surface 24 with a very sharp impact. The number of rings 82 in the finger gripping section 52 is less than the number of rings 82 of in the finger gripping section 26 to minimize premature release of the center punch member prior to the release of the prick punch member 40.
REFERENCES:
patent: 833712 (1906-10-01), Geisenhoner
patent: 1458961 (1923-06-01), Williams
patent: 2602360 (1952-07-01), Berninger
patent: 2675079 (1954-04-01), Hughes
patent: 4069586 (1978-01-01), Skelton
Clark Emory J.
Warner Robert J.
Seidel Richard K.
Spring Line, Inc.
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