Compressed-air screw or bolt tightener, especially an impulse or

Details Compressed-air screw or bolt tightener, especially an impulse or Compressed-air screw or bolt tightener, especially an impulse or

1993-12-17

1995-08-08

Smith, Scott A.

Tool driving or impacting

Automatic control of power operated means

Drive means responsive to torque or speed condition

B23Q 1512

Patent

active

054390630

ABSTRACT:
A compressed-air screw or bolt tightener having a driving motor which drives a driving shaft for a screwing or tightening tool is disclosed. The motor is operated by compressed air and a control valve for switching the compressed-air supply to the screw or bolt tightener on or off. A pressure-regulating valve is used to regulate the kinetic energy of the screw or bolt tightener.

REFERENCES:
patent: 3033236 (1962-05-01), Rayman et al.
patent: 3796131 (1974-01-01), Workman, Jr. et al.
patent: 4161221 (1979-07-01), Carlin et al.
patent: 4375121 (1983-03-01), Sigmund
patent: 5113949 (1992-05-01), Ohkubo et al.
patent: 5117919 (1992-06-01), Borries et al.
patent: 5315501 (1994-05-01), Whitehouse

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