US 7,320,490 B2 | ||
Impact handle for shovels and related hand tools | ||
Ray James Yakimchuk, P.O. Box 840, Spicer, Minn. 56288 (US) | ||
Filed on Sep. 12, 2005, as Appl. No. 11/224,440. | ||
Prior Publication US 2007/0057521 A1, Mar. 15, 2007 | ||
Int. Cl. A01B 1/02 (2006.01); B25D 1/16 (2006.01) |
U.S. Cl. 294—49 [294/8.6; 294/57; 294/59; 173/128] | 9 Claims |
1. An impact handle for use with a tool head comprising:
a tool end adapted to receive the tool head, a free end, and an impact generator, the impact generator located between the
tool end and the free end;
the impact generator generally having a cylindrical shape forming a cavity, the cavity containing a static impact surface
near the tool end, a stopper near the free end of the cavity, a slide chamber between the stopper and the static impact surface
an impact slug and an active impact surface;
a reciprocation means moving the impact slug within the slide chamber forcing the active impact surface of the impact slug
to strike the static impact surface at a frequency of 1 to 10 hertz, the static impact surface being in rigid connection with
the tool head;
the reciprocation means also having a power supply, an actuation means, a hall effect device circuit, an amplifier circuit,
an output circuit, a control circuit, a bleed-off circuit and a high output coil circuit.
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