Internal-combustion engines – Free piston – Single chamber; one piston
Reexamination Certificate
2006-01-03
2006-01-03
Gimie, Mahmoud (Department: 3747)
Internal-combustion engines
Free piston
Single chamber; one piston
C227S010000, C227S130000
Reexamination Certificate
active
06981474
ABSTRACT:
A setting tool for driving fastening elements and including a setting piston (20) axially displaceably arranged in the hollow chamber (14) of a piston guide (13), and a piston stop device (30) for the setting piston (20), arranged in setting direction end region of the hollow chamber (14) and having a damping element (31) supported against a stop (15), and a stop member (32) adjoining the damping element (31) in a direction of the hollow chamber (14) and operationally connectable with the piston band (22), and having a cylindrical bushing (33) for the piston stem (21), with the bushing (33) having an inner diameter (DS) that amounts to from 70% to 90% of a size of the maximal outer diameter (DB) of the prison band that has a conical surface engageable with the inner surface of the bushing.
REFERENCES:
patent: 5056701 (1991-10-01), Bereiter
patent: 6220495 (2001-04-01), Jakob
patent: 6536647 (2003-03-01), Buchel et al.
patent: 6857548 (2005-02-01), Clark
Frommelt Markus
Jakob Robert
Abelman ,Frayne & Schwab
Gimie Mahmoud
Hilti Aktiengesellschaft
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