Opposed piston cutting apparatus
United States Patent 3192972

Inventors:
Tenney, William L.
Publication Date:
07/06/1965
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Assignee:
Tenney, William L.
Primary Class:
30/369
Other Classes:
83/748, 173/101, 123/46R, 30/392, 56/11.900
International Classes:
B23D49/00; B23D51/16; B26B7/00; B23D51/00
US Patent References:
2904022Synchronizing and phasing mechanisms for free piston engines
2912965Free piston machine
3023563Double sickle reciprocating cutting assembly driven by a free piston internal combustion engine
3023564Lawn mower with reciprocating cutter driven by a free piston internal combustion engine