Power regulator for a pneumatic fastener driving tool

Details Power regulator for a pneumatic fastener driving tool Power regulator for a pneumatic fastener driving tool

B - Operations, Transporting

25

C

1/32

B25C 1/04 (2006.01)

Patent

CA 1311878

POWER REGULATOR FOR A PNEUMATIC FASTENER DRIVING TOOL Gilbert A. Cotta ABSTRACT OF THE DISCLOSURE A regulator for adjusting the amount of power generated by a pneumatic fastener driving tool of the type having a body connected to a source of air under pressure and containing a cylinder with a piston/driver assembly mounted therein and a main valve. The main valve is slidably supported above the cylinder on a centerpost affixed to a cap closing the top of that portion of the tool body surrounding the cylinder. The main valve is shiftable on the centerpost between a closed position engaging the upper end of the cylinder and shutting off the cylinder from the supply of air under pressure within the tool body and opening vent passages in the centerpost and cap to vent the cylinder volume above the piston to atmosphere, and an open position closing the vent passages and opening the upper end of the cylinder to air under pressure within the tool body to actuate the tool. The regulator comprises an adjustable stop mounted in the centerpost and extending thereabout. The stop is shiftable toward and away from the cylinder and determines the open position of the main valve and thus the size of the opening between the cylinder and the main valve, which determines the power generated by the tool. An adjustment screw is rotatively mounted in the cap, having a first end above the cap and provided with a knob and a second end threadedly engaged in the stop to shift the stop.

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