Stanley Fastening Systems, L.p.

David J Buzzeo

David B Jalbert

James A Russell

Charles W Hewitt

The present invention is a power-operated screwdriving device configured to be used with a rotary power source and a supply of collated screws. The device comprises a housing structure and a feeding assembly defines a drive track carried by the housing and providing a workpiece engaging surface. The drive track is configured to receive a lead screw from the supply. A rotatable screw engaging bit member is constructed and arranged to be operatively connected to the rotary power source such that the rotary power source rotates the screw engaging bit member during a screwdriving operation. The rotatable screw engaging bit member is movable relative to the drive track and the workpiece engaging surface such that, when the workpiece engaging surface is engaged with the surface of the workpiece, rotation of the bit member and relative movement between the bit member and the drive track drives the lead screw into the workpiece during the screwdriving operation. Screw depth setting structure provides a feeding assembly engaging surface. The screw depth setting structure is positioned and configured such that the feeding assembly engaging surface engages the feeding assembly to thereby limit the relative movement occurring between the screw engaging bit member and the workpiece engaging surface during the screwdriving operation. The workpiece engaging surface and the rotatable screw engaging bit member are constructed and arranged such that, when the feeding assembly is engaged with the feeding assembly engaging surface, a distance between a screw engaging end portion of the bit member and the workpiece engaging surface determines the depth to which the lead screw will be driven relative to the surface of the workpiece during the screwdriving operation. A manually engageable screw depth adjusting member is disposed exteriorly of the housing structure and operatively connected to the screw depth setting structure. The screw depth adjusting member is constructed and arranged such that manual operation thereof moves the screw depth setting structure through a range of adjustable positions to thereby adjust the depth to which the lead screw will be driven to the surface of the workpiece during the screwdriving operation.

Power-operated screwdriving device

The present invention is a screwdriving device configured to be used with a rotary power source and a screw collation supply. A feeding assembly defines a drive track and a rotatable screw engaging bit member is operatively connected with a rotary power source. The bit member is engageable with the lead screw and movable relative to the drive track to drive the lead screw into the workpiece. The feeding assembly is constructed and arranged to move a subsequent lead screw from the screw collation supply into the drive track. The feeding assembly includes a screw feeding structure movable between (1) a lead screw engaged position and (2) a subsequent lead screw engaging position. The feeding assembly includes a biasing element engaged with the screw feeding structure. The biasing element applies a biasing force to the screw feeding structure in the feeding direction so as to (1) bias the screw feeding structure towards the lead screw engaging position and (2) bias the screw feeding structure towards and into engagement with the screw collation supply. The screw feeding structure moves against the biasing force of the biasing element from the lead screw engaging position to the subsequent lead screw engaging position in response to the bit member moving forwardly relative to the drive track during the screwdriving operation. The screw feeding structure engages the exterior surface of the subsequent lead screw so as to move against the biasing force of the biasing element away from the screw collation supply as the screw feeding structure moves from the lead screw to the subsequent lead screw engaging position, and then, after the screw feeding structure has cleared the subsequent lead screw, the biasing element applies the biasing force so as to move the screw feeding structure towards the screw collation supply and into the subsequent lead screw engaging position. The feeding assembly is constructed and arranged such that the biasing element moves the screw feeding structure from the subsequent lead screw engaging position to the lead screw engaging position in response to the bit member moving rearwardly relative to the drive track after the screwdriving operation so as to move the subsequent lead screw into the drive track.

Power-operated screw driving device

The present invention is a power-operated screwdriving device configured to be used with a rotary power source and a supply of screws. The screwdriving device comprises a housing structure constructed and arranged to be engaged with the rotary power source. Structure defines a drive track constructed and arranged to receive a lead screw from the supply of screws. A rotatable screw engaging bit member is constructed and arranged to be engaged with the lead screw from the supply of screws during a screwdriving operation wherein the lead screw is driven into a workpiece. A releasable bit locking assembly is disposed in the housing and constructed and arranged to operatively connect the bit member to the rotary power source to enable the rotary power source to rotate the bit member during the screwdriving operation. The releasable bit locking assembly includes bit locking structure constructed and arranged to lockingly engage the bit member. The rotatable screw engaging bit member is engageable with the lead screw and movable relative to the drive track such that rotation of the bit member and relative movement between the bit member and the drive track drives the lead screw into the workpiece during the screwdriving operation. A manually engageable release structure is disposed exteriorly of the housing structure and operatively connected to the releasable bit locking assembly. The releasable bit locking assembly is manually movable to move the releasable bit locking assembly between (1) a releasably locked position wherein the bit locking structure lockingly engages the bit member and (2) a released position wherein the bit locking structure is moved out of the locking engagement to thereby allow the bit member to be replaced by another rotatable screw engaging bit member.

Power operated screwdriving device

The present invention is a power-operated screwdriving device configured to be used with a rotary power source and a supply of screws releasably mounted on a severable collation. The screwdriving device comprises a housing structure constructed and arranged to be engaged with the rotary power source. Structure defines a drive track constructed and arranged to receive a lead screw releasably mounted on the severable collation. A rotatable screw engaging bit member is constructed and arranged to be operatively connected with the rotary power source such that the rotary power source can rotate the screw engaging bit member. The screw engaging bit member is engageable with the lead screw and movable relative to the drive track such that rotation of the screw engaging bit member and relative movement between the screw engaging bit member and the drive track separates the lead screw from the severable collation and drives the lead screw from the drive track into a workpiece during a screwdriving operation. A feeding assembly is constructed and arranged to move the supply of screws and the severable collation relative to the drive track such that a subsequent lead screw is moved into the drive track, and such that emptied portions of the severable collation from which preceding screws have been removed are moved outwardly from the drive track after the lead screw is driven into the workpiece during the screwdriving operation. A collation cutting structure is mounted on the housing structure. The collation cutting structure is positioned and configured so that a user can manually grasp the emptied portions of the severable collation which have been moved outwardly from the drive track and move the emptied portions into engagement with the collation cutting structure to thereby cut the severable collation and allow the user to discard the emptied portions of the severable collation.

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Brighton, MA, United States of America

David J Buzzeo