US 12,263,569 B2
Gas spring-powered fastener driver
Alex J. Brasel, Greenfield, WI (US); and Garrett C. Waldron, Wauwatosa, WI (US)
Assigned to MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed by MILWAUKEE ELECTRIC TOOL CORPORATION, Brookfield, WI (US)
Filed on Apr. 25, 2023, as Appl. No. 18/138,968.
Claims priority of provisional application 63/339,734, filed on May 9, 2022.
Prior Publication US 2023/0356375 A1, Nov. 9, 2023
Int. Cl. B25C 1/04 (2006.01)
CPC B25C 1/047 (2013.01) 14 Claims
OG exemplary drawing
 
1. A gas spring-powered fastener driver comprising:
an outer cylinder configured to contain a pressurized gas therein;
an inner cylinder disposed within the outer cylinder;
a piston disposed within the inner cylinder and moveable along the inner cylinder;
a driver blade attached to the piston and moveable therewith between a top-dead-center (TDC) position and a bottom-dead-center (BDC) position, the driver blade configured to drive a fastener when moved from the TDC position toward the BDC position; and
a two-way valve coupled to the outer cylinder, the two-way valve configured to selectively permit a first flow of gas into the outer cylinder and to selectively permit a second flow of gas from the outer cylinder;
wherein the two-way valve includes an interior end disposed within the outer cylinder and in fluid communication with the gas contained within the outer cylinder, an exterior end disposed outside the outer cylinder, and a sealing area disposed between the interior end and the exterior end.