Stanley Fastening Systems, L.p.

Stanley Bostitch, Inc.

Arthur E Perra

David J Simonelli

Prudencio S Canlas, Jr

David M McGee

Phillip Maurice Braun

Brian M White

Walter G Lemos

Thomas E Babington

Patrick J Scanlon

John J Harrison

Leo E La Barre

Rudolph J Kellerman

A fastener driving tool includes a housing assembly with a nosepiece assembly defining a drive track. A safety trip assembly includes a trigger enabling portion and a workpiece engaging portion and is movable between an extended disabling position and a retracted enabling position. The safety trip assembly is biased toward the extended position and is moved toward the retracted position by engagement between a workpiece and the workpiece engaging member. The workpiece engaging portion is movable to permit adjustment of a length of the safety trip assembly. The workpiece engaging portion may be removed from the safety trip assembly and exchanged with another different workpiece engaging portion. A workpiece engaging portion usable with the fastener driving tool includes a positioning mechanism having an opening locating structure and a guiding structure.

Depth of drive adjustment for a fastener driving tool with removable contact member and method of exchanging contact members

A fastener driving tool includes a housing assembly with a nosepiece assembly defining a drive track. A driving mechanism is housed within the housing assembly to drive a fastener through the drive track and into a workpiece in response to a trigger. The tool includes a safety trip assembly which includes a trigger enabling portion and a workpiece engaging portion and is movable between an extended disabling position and a retracted enabling position. The safety trip assembly is biased toward the extended position and is moved toward the retracted position by engagement between the workpiece and the workpiece engaging member. The workpiece engaging portion is movable to permit adjustment of a length of the safety trip assembly. The safety trip assembly includes a coupling mechanism including a fixed locking structure formed on an exterior portion of the workpiece engaging portion and a manually operable locking mechanism. The locking mechanism is carried by the trigger enabling portion and includes a locking member mounting structure and has a manually operable locking member mounted thereon. The movable locking member is biased into a locking position, engaging the fixed locking structure and preventing relative movement between the workpiece engaging portion and the trigger enabling portion and may move into a releasing portion disengaging the fixed locking structure and permitting such relative movement. A user may manually move the locking mechanism against the bias by engaging the movable locking member and moving it from the locking position to the releasing position.

Safety trip assembly and trip lock mechanism for a fastener driving tool

A fastener driving tool includes a housing assembly with a nosepiece assembly defining a drive track. A driving mechanism is housed within the housing assembly to drive a fastener through the drive track and into a workpiece in response to a trigger. The tool includes a safety trip assembly which includes a trigger enabling portion and a workpiece engaging portion and is movable between an extended disabling position and a retracted enabling position. The safety trip assembly is biased toward the extended position and is moved toward the retracted position by engagement between the workpiece and the workpiece engaging member. The workpiece engaging portion is movable to permit adjustment of a length of the safety trip assembly. The safety trip assembly includes a coupling mechanism including a fixed locking structure formed on an exterior portion of the workpiece engaging portion and a manually operable locking mechanism. The locking mechanism is carried by the trigger enabling portion and includes a locking member mounting structure and has a manually operable locking member mounted thereon. The movable locking member is biased into a locking position, engaging the fixed locking structure and preventing relative movement between the workpiece engaging portion and the trigger enabling portion and may move into a releasing position disengaging the fixed locking structure and permitting such relative movement. A user may manually move the locking mechanism against the bias by engaging the movable locking member and moving it from the locking position to the releasing position.

A fastener driving tool is provided including a portable housing defining a fastener drive track, a fastener driving element carried by the housing for movement within the drive track through successive cycles of operation, each of which includes a fastener driving stroke and a return stoke, and a drive piston operatively connected with the fastener driving element for movement therewith. The tool also has a magazine assembly carried by the housing for receiving a supply of fasteners and feeding successive fasteners into the drive track in a position to be driven into a work piece during successive fastener driving strokes of the fastener driving element, an actuating structure carried by the housing and being constructed and arranged to move from a normal, inoperative position into an operative position to initiate the movement of the drive piston and the fastener driving element through a fastener driving stroke, and an overdrive signaling structure carried by the housing. The overdrive signalling structure includes an impulse responsive member constructed an arranged (1) to remain in a first position when the fastener driving tool is being operated at an acceptable power required to drive a fastener into the work piece and (2) to move from the first position thereof to a second position in response to an excessive impulse force resulting from a fastener driving stroke of the tool, thereby signaling the tool operator that the tool is being operated at a power in excess of the power requirements to drive a fastener into the work piece.

Overdrive signalling structure for fastener driving tool

A housing structure including a manually engageable handle for enabling a user to portably operate the device and a nosepiece portion disposed forwardly thereof. Extending rearwardly from the nosepiece portion is a magazine assembly which together with the nosepiece define a drive track therebetween. A fastener driving element is slidably mounted in the drive track. Power operated means for moving the fastener driving element are provided within the drive track moving the fastener driving element through successive operative cycles each including a drive stroke in one direction and a return stroke in an opposite direction. The magazine assembly includes a fastener stick receiving feed track and means for biasing a stick of fasteners in the feed track to move a leading fastener of the stick into the drive track to be driven therefrom during the drive stroke of the fastener driving element into a workpiece. Means are provided for mounting the magazine assembly with respect to the housing structure in an operative position with respect to the nosepiece portion and for movement away from and toward the operative position. The magazine assembly is biased into the operative position which allows the magazine assembly to be moved through a first range of movement wherein resilient movement of the magazine assembly away from the nosepiece portion will take place during an unwanted fastener deformation to allow the deformed fastener to self clear after which the magazine assembly is returned to the operative position.

Rear load magazine assembly

An internal combustion actuated fastener driving device in which a simple container supply of fuel under pressure carried in a handle portion of the portable housing assembly feeds to a supply chamber controlled by an actuating valve operable in response to a manual acuating procedure to be spring moved into an operative position. The movement of the actuating valve into its operative position communicates a previously formed charge of gaseous fuel under pressure in a separate charge chamber with a series of nozzles so as to discharge in jet stream formations which aspirate fresh air through inlets to mix therewith in a mixing chamber for passage into a combustion chamber in open condition controlled by a main valve. The main valve moves under spring bias into a closed position in response to the depletion of gaseous fuel pressure within the charge chamber in timed relation with the crowding of the spent gases from the combustion chamber by the new combustible mixture. Ignition is in response to the closing of the main valve by a piezoelectric unit. The piston is driven by the energy of the combustion of mixture which initially is at generally atmospheric pressure. The return stroke of the piston is effected by a spring system which is active only at the end of the drive stroke and beginning of the return stroke.

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Hope Valley, RI, United States of America

Arthur E Perra