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A dry fire lockout assembly for a fastener driving device includes a bypass feature. A link is movably mounted to an upper contact arm and interconnected with a lower contact arm when the link is in a first orientation. The link includes a dry fire lockout portion. A dry fire lockout portion of a li

A dry fire lockout assembly for a fastener driving device includes a bypass feature. A link is movably mounted to an upper contact arm and interconnected with a lower contact arm when the link is in a first orientation. The link includes a dry fire lockout portion. A dry fire lockout portion of a lifter is configured to engage the dry fire lockout portion of the link, when a supply of fasteners in the fastener driving device is less than a predetermined number of fasteners, and move the link against the bias of the biasing member to a second orientation in which the link is not interconnected with the lower contact arm.

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1. A fastener driving device comprising: a housing having an engine receiving portion;a drive engine located in the engine receiving portion, the drive engine comprising a cylinder and a piston reciprocally mounted within the cylinder, the piston comprising a driver configured to move along a drive

1. A fastener driving device comprising: a housing having an engine receiving portion;a drive engine located in the engine receiving portion, the drive engine comprising a cylinder and a piston reciprocally mounted within the cylinder, the piston comprising a driver configured to move along a drive axis to drive a fastener during a drive stroke;a nose assembly operatively connected to the housing, the nose assembly comprising a drive track aligned with the drive axis;a magazine constructed and arranged to feed successive leading fasteners from a supply of fasteners into the drive track;a pusher assembly slidably mounted in the magazine, the pusher assembly comprising a pusher configured to push the supply of fasteners towards the drive track, and a lifter comprising a dry fire lockout portion;a trigger configured to operate the drive engine;a contact trip assembly comprising a lower contact arm comprising a first end configured to contact a work piece,an upper contact arm comprising a first end operatively connected to the lower contact arm, and a second end configured to enable the trigger to operate the drive engine,a link movably mounted to the first end of the upper contact arm and interconnected with the lower contact arm when the link is in a first orientation, the link comprising a dry fire lockout portion, anda biasing member positioned between the link and the upper contact arm, the biasing member being configured to bias the link in the first orientation so that the link is interconnected with the lower contact arm to operatively connect the link and the lower contact arm;wherein the dry fire lockout portion of the lifter is configured to engage the dry fire lockout portion of the link, when the supply of fasteners is less than a predetermined number of fasteners, and move the link against the bias of the biasing member to a second orientation in which the link is not interconnected with the lower contact arm. 2. The fastener driving device according to claim 1, wherein the lower contact arm further comprises a second end and a recess located near the second end, wherein the link comprises a protrusion configured to be received by the recess of the lower contact arm when the link is in the first orientation, and wherein when the link is in the second orientation, the protrusion is not received by the recess. 3. The fastener driving device according claim 2, wherein the contact trip assembly further comprises: a spring positioned between the second end of the lower contact arm and a nose piece assembly of the fastener driving device, wherein the spring is configured to provide resistance against movement of the lower contact arm relative to the upper contact arm when the link is in the second orientation. 4. The fastener driving device according to claim 1, wherein the biasing member comprises a torsion spring. 5. The fastener driving device according to claim 1, wherein the dry fire lockout portion of the lifter comprises a first ramped surface configured to engage a first ramped surface of the dry fire lockout portion of the link when the contact arm assembly is moved from an actuated position to a non-actuated position and the number of fasteners in the supply of fasteners is less than the predetermined number, and lift the dry fire lockout portion of the link so that the link is moved from the first orientation to the second orientation. 6. The fastener driving device according to claim 5, wherein the dry fire lockout portion of the lifter comprises a second ramped surface configured to engage a second ramped surface of the dry fire lockout portion of the link when the contact arm assembly is in the non-actuated position, the number of fasteners in the supply of fasteners is less than the predetermined number, and the pusher assembly is moved towards the nose assembly, and lift the dry fire lockout portion of the link so that the link is moved from the first orientation to the second orientation. 7. The fastener driving device according to claim 1, wherein the link is located outside of the housing and the nose assembly. 8. A dry fire lockout assembly for a fastener driving device, the dry fire lockout assembly comprising: a lifter comprising a dry fire lockout portion; anda contact trip assembly comprising a lower contact arm comprising a first end configured to contact a work piece,an upper contact arm comprising a first end operatively connected to the lower contact arm, and a second end configured to enable a trigger to operate a drive engine of the fastener driving device,a link movably mounted to the first end of the upper contact arm and interconnected with the lower contact arm when the link is in a first orientation, the link comprising a dry fire lockout portion, anda biasing member positioned between the link and the upper contact arm, the biasing member being configured to bias the link in the first orientation so that the link is interconnected with the lower contact arm to operatively connect the link and the lower contact arm;wherein the dry fire lockout portion of the lifter is configured to engage the dry fire lockout portion of the link, when a supply of fasteners in a magazine of the fastener driving device is less than a predetermined number of fasteners, and move the link against the bias of the biasing member to a second orientation in which the link is not interconnected with the lower contact arm. 9. The dry fire lockout assembly according to claim 8, wherein the lower contact arm further comprises a second end and a recess located near the second end, wherein the link comprises a protrusion configured to be received by the recess of the lower contact arm when the link is in the first orientation, and wherein when the link is in the second orientation, the protrusion is not received by the recess. 10. The dry fire lockout assembly according to claim 9, wherein the contact trip assembly further comprises: a spring positioned between the second end of the lower contact arm and a nose piece assembly of the fastener driving device, wherein the spring is configured to provide resistance against movement of the lower contact arm relative to the upper contact arm when the link is in the second orientation. 11. The dry fire lockout assembly according to claim 8, wherein the biasing member comprises a torsion spring. 12. The dry fire lockout assembly according to claim 8, wherein the dry fire lockout portion of the lifter comprises a first ramped surface configured to engage a first ramped surface of the dry fire lockout portion of the link when the contact arm assembly is moved from an actuated position to a non-actuated position and the number of fasteners in the supply of fasteners is less than the predetermined number, and lift the dry fire lockout portion of the link so that the link is moved from the first orientation to the second orientation. 13. The dry fire lockout assembly according to claim 12, wherein the dry fire lockout portion of the lifter comprises a second ramped surface configured to engage a second ramped surface of the dry fire lockout portion of the link when the contact arm assembly is in the non-actuated position, the number of fasteners in the supply of fasteners is less than the predetermined number, and the pusher assembly is moved towards a nose assembly of the fastener driving device, and lift the dry fire lockout portion of the link so that the link is moved from the first orientation to the second orientation. 14. The dry fire lockout assembly according to claim 8, wherein the lifter is part of a pusher assembly slidably mounted in the magazine of the fastener driving device.