US 9,808,896 B2
Positive feed tool with a modular architecture
Kevin Myhill, Lexington, SC (US)
Assigned to Apex Brands, Inc., Apex, NC (US)
Filed by Apex Brands, Inc., Apex, NC (US)
Filed on Feb. 24, 2014, as Appl. No. 14/188,201.
Claims priority of provisional application 61/769,736, filed on Feb. 26, 2013.
Claims priority of provisional application 61/822,959, filed on May 14, 2013.
Prior Publication US 2014/0238711 A1, Aug. 28, 2014
Int. Cl. B23Q 5/26 (2006.01); B23Q 5/32 (2006.01); B23Q 11/04 (2006.01); B25B 21/00 (2006.01); B25F 3/00 (2006.01); B25F 5/00 (2006.01); B25F 5/02 (2006.01); F16K 1/34 (2006.01); F16K 27/02 (2006.01); F16K 31/122 (2006.01)
CPC B23Q 5/326 (2013.01) [B23Q 5/261 (2013.01); B23Q 5/263 (2013.01); B23Q 5/265 (2013.01); B23Q 11/04 (2013.01); B25B 21/00 (2013.01); B25F 3/00 (2013.01); B25F 5/00 (2013.01); B25F 5/001 (2013.01); B25F 5/02 (2013.01); F16K 1/34 (2013.01); F16K 27/02 (2013.01); F16K 31/1225 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A pneumatic tool that is powered by an air supply, the pneumatic tool comprising:
a main air inlet that receives air from the air supply;
a pneumatic circuit that extends from the main air inlet;
a pneumatic motor operatively connected to the pneumatic circuit;
a spindle configured to move along a feed path in advance and retract directions;
a plurality of gears that connect the pneumatic motor to the spindle and are configured to rotate the spindle and to move the spindle in the advance and retract directions;
a start switch operatively connected to the pneumatic circuit to send a signal to activate the pneumatic motor;
a counter operatively connected to the pneumatic circuit downstream from the start switch with air from the start switch passing along the pneumatic circuit to the counter, the counter comprising an inlet and an outlet for air to pass through the counter, the counter configured to count a number of times the spindle moves through a cycle;
wherein the counter interrupts the signal from the start switch and controls the flow of air that passes through the counter and that thereby affects the air that reaches the pneumatic motor to prevent activation of the pneumatic motor when the count reaches a predetermined number, the counter configured to interrupt the signal without interrupting the flow of air into the pneumatic circuit through the main air inlet.