Cutlery – Perforating or indenting implements – With portion positioned in work aperture
Patent
1993-09-01
1995-07-18
Payer, Hwei Siu
Cutlery
Perforating or indenting implements
With portion positioned in work aperture
30367, B26F 100
Patent
active
054330076
ABSTRACT:
A self-centering impact hand tool 10 has a forward tool member 14 with an elongated forward tool body 15 extending from a tool tip 17 to an anvil surface 19 at a rear end 18. The hand impact tool 10 has a plunger member 40 with an elongated forward end 44 having an anvil surface 46 for engaging the anvil surface 19. An elongated coil spring 60 has reduced diameter spring ends 64 and 66 mounted in corresponding spring latching grooves 22 and 54, respectively. Each of the members 14 and 40 have finger gripping sections 21 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 plunger member 40. Upon release of the plunger member, the anvil surface 46 of the forward end 44 is driven into a rear section 36 of a driving piston 33 to drive a brad, or nail or center punch rapidly and forcefully into a work surface 12. 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 21 to minimize premature release of the forward tool member prior to the release of the plunger member 40.
REFERENCES:
patent: 783749 (1905-02-01), Hartley
patent: 833712 (1906-06-01), Geisenhoner
patent: 1461032 (1920-07-01), Forsyth
patent: 1887085 (1932-11-01), Ehrlich
patent: 1931773 (1933-10-01), Sobol
patent: 2446848 (1948-08-01), Prester
patent: 2455577 (1948-12-01), Hager
patent: 2675079 (1954-04-01), Hughes
patent: 3407499 (1968-10-01), Rapaport
patent: 4069586 (1978-01-01), Skelton
patent: 5307741 (1994-05-01), Clark et al.
McMaster-Carr Company Catalog, Chicago, Ill., 1992, p. 1867.
Clark Emory J.
Warner Robert J.
Payer Hwei Siu
Spring Line, Inc.
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