Pneumatically operated screw driver

Details Pneumatically operated screw driver Pneumatically operated screw driver

1998-06-29

2000-02-22

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 5737, B25B 1700

Patent

active

060267135

ABSTRACT:
An air motor has a rotor rotatable in response to the pressure of pressurized air. A cylindrical rotary member is connected to the air motor for causing a rotation in synchronism with the rotation of the rotor. A rotary slider is slidable in the axial direction along the inner cylindrical wall of the rotary member. A rotational force transmitting mechanism is provided for transmitting the rotation of the rotary member to the rotary slider. A shaft has one end fixed to the rotary slider and the other end equipped with a piston and a driver bit holder. The rotational and axial motion of the rotary slider is transmitted to a driver bit held in the driver bit holder. And, a cylinder guides the axial slide movement of the piston responsive to the pressure of pressurized air applied on a pressure-receiving surface of the piston.

REFERENCES:
patent: 2818893 (1958-01-01), Shaff
patent: 5231902 (1993-08-01), Uno et al.
patent: 5730035 (1998-03-01), Ohmori et al.
patent: 5862724 (1999-01-01), Arata et al.

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