Power take off for cordless nailer
First Claim
Patent Images
1. A power tool comprising:
- a structure;
a flywheel coupled to the structure;
a driver that is translatable along a driver axis; and
a follower assembly having an actuator and an activation arm assembly, the actuator being coupled to the activation arm assembly, the activation arm assembly being coupled to the structure and including a pinch roller and a first arm, wherein actuation of the actuator causes the pinch roller to translate toward and engage the driver to initiate driving engagement between the driver and the flywheel to thereby permit the flywheel to drive the driver;
wherein the pinch roller is pivotably coupled to the first arm and rotates in a direction away from the flywheel and the driver after the driver has been driven along the driver axis by the flywheel and while the actuator is still engaged.
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Abstract
A power tool that includes a structure; a flywheel coupled to the structure; a driver that is translatable along a driver axis; and a follower assembly having an actuator and an activation arm assembly. The actuator is coupled to the activation arm assembly. The activation arm assembly is coupled to the structure and includes a pinch roller. Actuation of the actuator causes the pinch roller to translate toward and engage the driver to initiate driving engagement between the driver and the flywheel.
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Citations
17 Claims
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1. A power tool comprising:
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a structure; a flywheel coupled to the structure; a driver that is translatable along a driver axis; and a follower assembly having an actuator and an activation arm assembly, the actuator being coupled to the activation arm assembly, the activation arm assembly being coupled to the structure and including a pinch roller and a first arm, wherein actuation of the actuator causes the pinch roller to translate toward and engage the driver to initiate driving engagement between the driver and the flywheel to thereby permit the flywheel to drive the driver; wherein the pinch roller is pivotably coupled to the first arm and rotates in a direction away from the flywheel and the driver after the driver has been driven along the driver axis by the flywheel and while the actuator is still engaged.
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2. A power tool comprising:
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a structure; a flywheel coupled to the structure; a driver that is translatable along a driver axis; and a follower assembly having an actuator and an activation arm assembly, the actuator being coupled to the activation arm assembly, the activation arm assembly being coupled to the structure and including a pinch roller, wherein actuation of the actuator causes the pinch roller to translate toward and engage the driver to initiate driving engagement between the driver and the flywheel; wherein the activation arm assembly further includes a first arm, the first arm being fixedly coupled to the structure, the actuator being mounted on the first arm; wherein the activation arm further includes a second arm, the second arm including an arm member, a first axle and a second axle, the first axle being received through a pivot slot formed in the first arm, the first axle being coupled to the arm member, the second axle being coupled to the arm member, the pinch roller being mounted on the second axle; and wherein the activation arm further includes a third arm that engages the second arm, the third arm including a first mounting portion and a second mounting portion, the second mounting portion being pivotally coupled to the actuator and slidingly engaged to the first arm, the first mounting portion being biased in a direction toward the driver.
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3. A power tool comprising:
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a structure; a flywheel coupled to the structure; a driver that is translatable along a driver axis; and a follower assembly having an actuator and an activation arm assembly, the actuator being coupled to the activation arm assembly, the activation arm assembly being coupled to the structure and including a pinch roller, wherein actuation of the actuator causes the pinch roller to translate toward and engage the driver to initiate driving engagement between the driver and the flywheel; wherein the driver includes a first cam portion and wherein contact between the pinch roller and the first cam portion as the driver is driven by the flywheel along the driver axis causes the pinch roller to translate away from flywheel. - View Dependent Claims (4)
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5. A power tool comprising:
a structure;
a flywheel coupled to the structure;
a driver that is translatable along a driver axis; and
a follower assembly having an actuator, an activation arm assembly and a spring, the activation arm assembly including a first arm, a second arm, a third arm and a pinch roller, the first arm being fixed to the structure, the second arm being pivotally mounted to the first arm, the third arm having a first portion and a second portion, the second portion being pivotally and axially slidably coupled to the first arm, the second portion being pivotally coupled to the actuator, the spring biasing the first portion about the second arm in a first rotational direction, wherein the third arm pivots about the second arm in response to actuation of the actuator to move the second arm such that the pinch roller drives the driver into driving engagement with the flywheel.- View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
Specification