Internal-combustion engines – Free piston – Single chamber; one piston
Reexamination Certificate
2006-10-31
2006-10-31
Argenbright, Tony M. (Department: 3747)
Internal-combustion engines
Free piston
Single chamber; one piston
C227S010000
Reexamination Certificate
active
07128030
ABSTRACT:
A combustion-engined setting tool for driving fasting elements such as nails, bolts, pins in an object, includes a combustion chamber (13), a fuel source (11), a fuel conduit (12) connecting the fuel source (11) with combustion chamber (13) for feeding fuel thereinto, and at least one metering device (30) for metering a predetermined amount of fuel for effecting a setting process and having at least one variable volume metering chamber (31), and a displaceable piston body (34) for a pulsed ejection of fuel from the metering chamber (31).
REFERENCES:
patent: 6260519 (2001-07-01), Phillips
patent: 6722548 (2004-04-01), Odoni et al.
patent: 6877308 (2005-04-01), Voelker et al.
Gschwend Hans
Rosenbaum Ulrich
Schiestl Ulrich
Towfighi Kaveh
Voelker Lothar
Abelman ,Frayne & Schwab
Hilti Aktiengesellschaft
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