Tool driving or impacting – Automatic control of power operated means – Drive means responsive to torque or speed condition
Reexamination Certificate
2007-12-19
2010-10-05
Rada, Rinaldi I. (Department: 3721)
Tool driving or impacting
Automatic control of power operated means
Drive means responsive to torque or speed condition
C173S178000, C173S104000, C173S109000, C192S083000, C192S11000B
Reexamination Certificate
active
07806200
ABSTRACT:
A power tool includes an output member (8) projecting from the tool housing (4), a drive (6) located in the housing for rotating the output member (8), and a slip clutch (22) for transmitting torque from the drive (6) to the output member (8) and including a plurality of clutch elements (24) retained against rotation relative to the housing (4), a plurality of separate spring elements (28) for adjustable preloading the clutch elements (24) against the counter-clutch elements (51) of the control element (18) for retaining the control element (18) against rotation upon application of the torque thereto until threshold of the torque is reached, and a common support element for supporting the spring elements and movable relative to the housing (4).
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Breitenmoser Armin
Breitenmoser, legal representative Remo
Gerschwiler Othmar
Spielmann David
Abelman ,Frayne & Schwab
Hilti Aktiengesellschaft
Lopez Michelle
Rada Rinaldi I.
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