Cutlery – Perforating or indenting implements – Pointed
Patent
1998-10-02
2000-01-04
Payer, Hwei-Siu
Cutlery
Perforating or indenting implements
Pointed
301645, 301646, 301647, B02C 1800, F25C 516
Patent
active
060096268
ABSTRACT:
A tool for cracking ice and frost includes an outer tubular member, a T-shaped handle fixedly mounted on an upper end of the outer tubular member, a cylindrical sleeve having an axial through hole and an end formed with a flange, a conical head having a conical portion at one end thereof, a neck portion adjacent to the conical portion and a threaded portion at another end thereof, an inner tubular member being formed an internally threaded portion at one end thereof, an externally threaded portion at another end thereof, and an inner neck portion at an intermediate portion thereof, a striking pin provided with a sharp point at a lower end thereof and a flange at an upper end thereof, a guiding pin formed a cylindrical portion, an enlarged bottom at a lower end thereof, a rod portion having a smaller diameter than said cylindrical portion, and a conical portion between the cylindrical portion and the rod portion, a first helical spring provided with an eccentric lower end and arranged between the inner neck portion of the inner tubular member and the enlarged bottom of the guiding pin, a cylindrical hammer formed with an axial blind hole at a bottom thereof, a second helical spring being fitted within the inner tubular member, and a cap threadedly engaged with the upper end of the inner tubular member.
REFERENCES:
patent: 797824 (1905-08-01), Seitz
patent: 1424221 (1922-08-01), Trumpeter
patent: 1701771 (1929-02-01), Stefano
patent: 2384707 (1945-09-01), Sweet
patent: 4268927 (1981-05-01), Bridwell
patent: 4721903 (1988-01-01), Harsch et al.
patent: 5662686 (1997-09-01), Newsum
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