Patent ID: 11890734
Assignee: KYOCERA SENCO INDUSTRIAL TOOLS, INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 9:
10. 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 at least a first face, a second face, and a third face, said first, second, and third faces each extending along a length direction parallel to the longitudinal axis at least partially between the first end and the second end of the driver, said first face having a first common edge with said second face, and said third face having a second common edge with said first face, said first face being substantially wider than said second face, and said first face being substantially wider than said third face, with the second and third 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 third face in a direction that is substantially parallel to the first face; and

(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 first surface of the first rotatable disk, and said second rotatable disk having a second plurality of spaced-apart lifter pins extending from a second surface of the second rotatable disk, wherein:
(i) a rotational motion of the first rotatable disk occurs within a first plane that is substantially perpendicular to said first face of the driver; and
(ii) a rotational motion of the second rotatable disk occurs within a second plane that is substantially perpendicular to said first face of the driver;

(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.