Pulse tool

Details Pulse tool Pulse tool

2007-11-13

2009-02-03

Smith, Scott A. (Department: 3721)

Tool driving or impacting

Impacting devices

With anvil arranged to transmit torsional impact to tool

C173S176000, C173S093000

Reexamination Certificate

active

07484569

ABSTRACT:
A pulse tool, in particular a pulse nutsetter, has at least one pneumatic drive unit with a drive rotor and a pulse unit driven by the drive unit, wherein a delay-dependent inertial cut-off device is assigned to the drive unit for the interruption of the air feed on acquiring a cut-off pules. A pulse tool of this nature is improved to the effect that it has or facilitates a compact design, a low weight and simultaneously, a fast cut-off by the inertial cut-off device. This is achieved by the inertial cut-off device having at least one cut-off piston for changing the air feed between the open and closed positions and which can be moved relative to the drive rotor and an, essentially annular, inertial body which can turn with the drive rotor. Due to the inertial body, on acquiring the cut-off pulse at least one drive body, essentially radially adjustable relative to the drive rotor, can be deflected due to an internal contour. The drive body is movably linked to a release device provided for the cut-off piston and which can be moved between a release position and a retaining position. The release device can be moved by the drive body into the release position for the release of the cut-off piston for movement into its closed position.

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