US 11,890,734 B2
Lift mechanism for framing nailer
Thomas A. McCardle, Cincinnati, OH (US); Christopher D. Klein, Cincinnati, OH (US); Anthony D. Kabbes, Cincinnati, OH (US); Donald C. Ries, Loveland, OH (US); John T. Burke, Williamsburg, OH (US); Kory A. Gunnerson, Cincinnati, OH (US); and Jerome J. Schafer, Liberty Township, Butler County, OH (US)
Assigned to Kyocera Senco Industrial Tools, Inc., Cincinnati, OH (US)
Filed by Kyocera Senco Industrial Tools, Inc., Cincinnati, OH (US)
Filed on Sep. 30, 2022, as Appl. No. 17/957,467.
Application 17/957,467 is a continuation of application No. 16/726,488, filed on Dec. 24, 2019, granted, now 11,491,624, issued on Nov. 8, 2022.
Application 16/726,488 is a continuation of application No. 15/082,584, filed on Mar. 28, 2016, granted, now 10,549,412, issued on Feb. 4, 2020.
Claims priority of provisional application 62/140,177, filed on Mar. 30, 2015.
Prior Publication US 2023/0024447 A1, Jan. 26, 2023
Int. Cl. B25C 1/04 (2006.01); B25C 1/06 (2006.01)
CPC B25C 1/047 (2013.01) [B25C 1/06 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A lifting machine for use in a fastener driving tool, said lifting machine comprising:
(a) a movable piston;
(b) a guide body that includes a driver track;
(c) an elongated driver that is in mechanical communication with said movable piston at a first end of said driver, said driver having a second, opposite end that is sized and shaped to push a fastener, said driver having a direction of movement along the driver track that is substantially along a longitudinal axis that extends at least between the first end and the second end, said driver including a first face that extends along a length direction parallel to the longitudinal axis at least partially between the first end and the second end, a second face that extends along a length direction parallel to the longitudinal axis at least partially between the first end and the second end, a third face that extends along a length direction parallel to the longitudinal axis at least partially between the first end and the second end, and a fourth face that extends along a length direction parallel to the longitudinal axis at least partially between the first end and the second end, said first face having a first common edge with said second face, said second face having a second common edge with said third face, said third face having a third common edge with said fourth face, and said fourth face having a fourth common edge with said first face, said first face being substantially wider than said second face, said first face being substantially wider than said fourth face, and said first face being about the same width as said third face, in which the outer surfaces of said first, second, third, and fourth faces substantially create an overall rectangular shape in cross-section, with said first and third faces being on opposite sides of the driver from one another, and with the second and fourth faces being on opposite sides of the driver from one another;
(i) a first plurality of spaced-apart protrusions that extend from said second face in a direction that is substantially parallel to the first face; and
(ii) a second plurality of spaced-apart protrusions that extend from said fourth face in a direction that is substantially parallel to the first face;
(d) a rotatable lifter subassembly comprising a first rotatable disk and a second rotatable disk, said first and second rotatable disks rotate together, said first rotatable disk having a first plurality of spaced-apart lifter pins extending from a surface of the first rotatable disk, and said second rotatable disk having a second plurality of spaced-apart lifter pins extending from a surface of the second rotatable disk;
(e) wherein, during a lifting stroke that lifts said driver toward the movable piston:
(i) said first and second rotatable disks both rotate in a first direction; and
(ii) a rotational movement of both said first plurality of lifter pins and said second plurality of lifter pins engage, respectively, with said first plurality of spaced-apart protrusions of the driver and with said second plurality of spaced-apart protrusions of the driver.