Internal-combustion engines – Free piston – Single chamber; one piston
Reexamination Certificate
2006-11-28
2006-11-28
Kamen, Noah P. (Department: 3747)
Internal-combustion engines
Free piston
Single chamber; one piston
C227S010000
Reexamination Certificate
active
07140331
ABSTRACT:
A suspension system for a motor of a combustion-powered hand tool includes a motor retaining ring defining a space for accepting the motor, an outer ring radially spaced from the retaining ring and configured for attachment to a cylinder head of a combustion chamber, and at least one resilient suspension element configured for dampening vibrations between a motor support and a tool frame, and having a plurality of resilient beams connecting the retaining ring and the outer ring.
REFERENCES:
patent: 6520397 (2003-02-01), Moeller
patent: 2004/0050901 (2004-03-01), Turk
patent: 20 2005 011 723 (2005-11-01), None
Croll Mark W.
Greer Burns & Crain Ltd.
Illinois Tool Works Inc.
Kamen Noah P.
Soltis Lisa M.
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