Tool driving or impacting – Impacting devices – With anvil arranged to transmit torsional impact to tool
Patent
1996-07-30
1998-09-29
Smith, Scott A.
Tool driving or impacting
Impacting devices
With anvil arranged to transmit torsional impact to tool
173 935, 173218, B25B 1900
Patent
active
058134786
ABSTRACT:
A pulse tool, especially a nutsetter, comprises a pulse unit including a hydraulic cylinder driven by a motor, and a driven shaft supported in the hydraulic cylinder. Two seal rollers are supported in radial grooves of the driven shaft. The rollers are power-operated towards the inner wall of the cylinder. The seal rollers are simultaneously in contact only in a single rotary position of the cylinder with seal strips that project relative to the inner wall of the cylinder so as to produce an angular momentum. To simplify the structure of the pulse tool and to extend the period of use at the same time, the radial groove which receives the seal roller serving as a compensating roller comprises a lift delaying device for the limited centrifugal movement of the compensating roller.
REFERENCES:
patent: 3192739 (1965-07-01), Brown
patent: 3304746 (1967-02-01), Kramer et al.
patent: 4175408 (1979-11-01), Kasai et al.
patent: 5172772 (1992-12-01), Kettner et al.
Deutsche Gardner-Denver GmbH & Co.
Smith Scott A.
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