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US 8,505,798 B2Granted
Fastener driving device
AssigneeStanley Fastening Systems, L.P.
InventorsDavid Simonelli, Charles W. Hewitt, Keven E. Miller, Lok C. Lam, Tim Kimball, Andrew P. Leonczyk
Life of this patent
Estimating the term…
Abstract
A fastener driving device includes a fastener driver, a magazine for carrying a supply of fasteners to the fastener driver, a spring that moves the fastener driver through a drive stroke, and a motor configured to move the fastener driver through a return stroke. The motor is operable upon completion of the drive stroke, to move the fastener driver partially through the return stroke a predetermined amount to partially pre-compress the spring. The motor is further operable to fully compress the spring after receiving a signal for the drive stroke.
Claims15
A fastener driving device comprising:
- a fastener driver configured to drive a fastener into a workpiece during a drive stroke;
- an energy storage source configured to store potential energy and to release the potential energy to the fastener driver to initiate the drive stroke;
- a motor constructed and arranged to provide energy to the energy storage source;
- and
- a drive train operatively connected to the motor and to the energy storage source, the drive train comprising a clutch configured to transfer the energy from the motor to the energy storage source, and to restrain the potential energy stored in the energy storage source when the motor is in an off condition, wherein the clutch comprises
- a housing having an inner surface;
- a drive planet carrier rotationally coupled to the motor and positioned within the inner surface of the housing, the drive planet carrier having a plurality of drive members;
- an anvil rotatably coupled with the drive planet carrier and positioned within the inner surface of the housing, the anvil having a plurality of projections extending in a radial direction relative to a central axis of rotation;
- and
- a plurality of elongated breaking pads rotatably movable between a first orientation and a second orientation, each breaking pad being supported by the drive planet carrier and disposed between one of the projections of the anvil and one of the drive members of the drive planet carrier, the breaking pads being constructed and arranged to allow rotational movement of the anvil when the motor is providing energy to the energy storage source and the breaking pads are in the first orientation, and to substantially prevent rotation of the anvil when the motor is not providing energy to the energy storage source when the breaking pads are in the second orientation, wherein the second orientation is tilted relative to the first orientation.
7 more elements
A fastener driving device comprising
- a fastener driver configured to drive a fastener into a workpiece during a drive stroke;
- an energy storage source configured to store potential energy and to release the potential energy to the fastener driver to initiate the drive stroke;
- a motor constructed and arranged to provide energy to the energy storage source;
- and
- a drive train operatively connected to the motor and to the energy storage source, the drive train comprising a clutch configured to transfer the energy from the motor to the energy storage source, and to restrain the potential energy stored in the energy storage source when the motor is in an off condition;
- a rotatably mounted threaded shaft;
- a carrier connected to the fastener driver and configured to engage a part of the energy storage source;
- and
- a coupler mechanism configured to engage the threaded shaft and the carrier to allow transfer of the energy from the motor to the energy storage source, the coupler mechanism being operable to releasably couple the carrier to the threaded shaft to lift the carrier along the threaded shaft during a return stroke and to release the carrier to initiate the drive stroke.
6 more elements
A fastener driving device comprising:
- a fastener driver;
- a magazine for carrying a supply of fasteners to the fastener driver;
- an energy storage source configured to store potential energy that moves the fastener driver through a drive stroke;
- and
- a reversible motor configured to rotate a shaft in a first direction to move the fastener driver through a return stroke, the motor operable upon completion of the drive stroke, to move the fastener driver partially through the return stroke a predetermined amount to partially pre-energize the energy storage source, the motor further operable to fully energize the energy storage source after receiving a signal for the drive stroke, the motor further configured to rotate the shaft in a second direction opposite the first direction to de-energize the energy storage source;
- a nose assembly carried by a housing, the nose assembly having a fastener drive track;
- the magazine constructed and arranged to feed successively leading fasteners from the supply of fasteners contained therein into the drive track;
- the fastener driver configured to enter the drive track during the drive stroke and drive a leading fastener into a workpiece;
- a contact trip constructed and arranged to be moved from a normally biased inoperative position into an operative position when the contact trip is pressed against the workpiece;
- and
- a fastener lockout operatively coupled to the contact trip, the fastener lockout being constructed and arranged to extend into the drive track in a path of the fastener driver to prevent the leading fastener from being driven by the fastener driver when the contact trip is in the inoperative position.
8 more elements
A fastener driving device comprising:
- a frame;
- a fastener driver movably mounted within the frame and constructed and arranged to drive a fastener into a workpiece during a drive stroke;
- an energy storage source configured to store potential energy and to release the potential energy to the fastener driver to initiate the drive stroke;
- a motor constructed and arranged to provide energy to the energy storage source;
- a drive train operatively connected to the motor and to the energy storage source, the drive train being configured to transfer the energy from the motor to the energy storage source, and to restrain the potential energy stored in the energy storage source when the motor is in an off condition;
- and
- a recoil suppression device constructed and arranged to suppress an amount of recoil when the fastener driver drives the fastener into the workpiece, the recoil suppression device comprising a counter mass configured to be displaceable in a direction opposite a direction the fastener driver travels during the drive stroke, wherein the counter mass includes the drive train.
4 more elements
Dependencies are inferred from the claim text.