Abstract: A fastening tool including a housing, a magazine connected to the housing for storing a fastener, a driving mechanism disposed within the housing for driving the fastener into a workpiece, a trigger assembly pivotally attached to the housing for activating the driving mechanism, the trigger assembly comprising a main trigger, pivotally attached to the housing and a supplemental trigger pivotally attached to the main trigger; and a contact trip assembly comprising an upper contact trip contacting the supplemental trigger, a lower contact trip connected to the upper contact trip, wherein the upper and lower contact trips have teeth that mesh together for locking the upper and lower contact trips.

Abstract: A wrenching portion provided in an adjuster and employed for assembling is formed at a gripping portion for rotation. The gripping portion is formed in a polygonal shape. In this configuration, the adjuster is decreased in size and weight and its operability of adjusting a driving depth is improved. An undercut portion is removed in a vertical direction and a non-slip rugged portion is provided in only a longitudinal direction so that it can be manufactured in a simple tow-part mold, thereby reducing the production cost.

Abstract: The apparatus is intended to drive fasteners (21) for fastening a piece (20) to a support (30). The apparatus has a snout (12) equipped with a bearing shoe (14). The shoe is equipped with lateral positioning one-piece plate (15) on which there are formed a number of distinct lateral bearing surfaces (8, 8′, 8″, 8 82, 83) roughly parallel to the axis of the snout to be applied in particular to an edge of one of the pieces either the support piece or the piece that is to be fastened.

Abstract: A nail gun and depth control spacer assembly for ejecting nails into a substrate which contains two or more layers of roofing materials one of which is a compressible fibrous layer. The nails penetrate the substrate but are prevented by the depth control spacer from permanently compressing the compressible fibrous layer which springs back to is original thickness after completion of the nailing process. The depth control spacer, attached to the base of the nail gun, is of semi-oval configuration having a pressure sensitive layer and a solid layer, is provided with an oval cavity in its center portion through which the nails are ejected into the substrate.

Abstract: 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.

Abstract: A nail gun and depth control spacer assembly for ejecting nails into a substrate which contains two or more layers of roofing materials one of which is a compressible fibrous layer. The nails penetrate the substrate but are prevented by the depth control spacer from permanently compressing the compressible fibrous layer which springs back to is original thickness after completion of the nailing process. The depth control spacer, attached to the base of the nail gun, is of semi-oval configuration having a pressure sensitive layer and a solid layer, is provided with an oval cavity in its center portion through which the nails are ejected into the substrate.

Abstract: A bolt 6, accommodated in a cylinder knob 10, is screwed into a main body 5 to restrict the shift movement of a push lever 1. A spline coupling, provided between a hexagonal bore 10a formed in the cylinder knob 10 and a hexagonal head 6a of the bolt 6, transmits a rotational motion of cylinder knob 10 to the bolt 6 and allows the cylinder knob 10 to slide with respect to the main body 5. A projection 12 of the main body 5 and a notch 10b of the cylinder knob 10, when engaged with each other under a resilient force of a spring 12, cooperatively constitute a stopper for restricting the rotation of the cylinder knob 10 with respect to the main body 5.

Abstract: A fastening tool including a housing, a magazine connected to the housing for storing a fastener, a driving mechanism disposed within the housing for driving the fastener into a workpiece, a trigger assembly pivotally attached to the housing for activating the driving mechanism, the trigger assembly comprising a main trigger, pivotally attached to the housing and a supplemental trigger pivotally attached to the main trigger; and a contact trip assembly comprising an upper contact trip contacting the supplemental trigger, a lower contact trip connected to the upper contact trip, wherein the upper and lower contact trips have teeth that mesh together for locking the upper and lower contact trips.

Abstract: For use in a fastener driving tool, a fastener assembly includes a plurality of fasteners arranged in a row, each fastener including a head and an elongated shank and a carrier including a plurality of connected carrier sleeves for receiving and surrounding a portion of an associated fastener. Each of the carrier sleeves includes an axis, an upper breakable portion, a middle portion, a lower breakable portion, a pedestal associated with the lower breakable portion, the pedestal axially extending away from the lower breakable collar, and a pair of notches in the lower breakable portion, the pair of notches opening toward the head of the associated fastener.

Abstract: For use in a fastener driving tool, a fastener assembly includes a plurality of fasteners arranged in a row, each fastener including a head and an elongated shank and a carrier including a plurality of connected carrier sleeves for receiving and surrounding a portion of an associated fastener. Each of the carrier sleeves includes an axis, an upper breakable portion, a middle portion, a lower breakable portion, a pedestal associated with the lower breakable portion, the pedestal axially extending away from the lower breakable collar, and a pair of notches in the lower breakable portion, the pair of notches opening toward the head of the associated fastener.

Abstract: An explosive powder charge-operated setting tool having a drive piston (4) for driving a pin-shaped nail (5) in a constructional component in a single drive-in step, and a control circuit (I) for controlling a setting depth (T) and including control electronics (7), a set point generator (8) for setting the setting depth (T), a position-determining sensor (9) for determining a position of a lower dead point (uTP) of movement of the drive piston (4), and a regulator (10) for an automatic adjustment of a motion energy of the drive piston; and a method of controlling the setting depth (T).

Abstract: A screw dispensing device includes a pushing member which is connected to the slide piece so as to simplify the processes of operation of the device. A movable positioning plate allows the screws with different sizes to be easily inserted in the barrel of the device. A rotatable adjusting knob is pivotably connected to the rear end of the positioning plate and controls the movement of the positioning plate so as to adjust the depth of feeding of the screws.

Abstract: A hammer head assembly used in a power hammer for driving a nail into objects to be fastened is constructed to include a nail holder axially slidably mounted in a hollow mounting base and forced out of the bottom side of the mounting base by a spring member, a magnet fixedly provided inside the nail holder and adapted to attract a nail in vertical for driving into the workpiece, and a hammering rod axially inserted into the nail holder and controlled to drive a nail out of the nail holder into the workpiece.

Abstract: A nail gun and depth control spacer assembly for ejecting nails into a substrate which contains two or more layers of roofing materials one of which is a compressible fibrous layer. The nails penetrate the substrate but are prevented by the depth control spacer from permanently compressing the compressible fibrous layer which springs back to is original thickness after completion of the nailing process. The depth control spacer, attached to the base of the nail gun, is of semi-oval configuration having a pressure sensitive layer and a solid layer, is provided with an oval cavity in its center portion through which the nails are ejected into the substrate.

Abstract: An adjustable end piece engagable with a drive tool and configured to deliver fasteners from the drive tool to a work piece. Assembly of the adjustable end piece can be varied by varying the assembly of the end piece components and thus varying the length of the end piece. The variation in the length of the end piece allows the end piece to accommodate fasteners of varying lengths.

Abstract: An anchor setting device for setting a concrete anchor into concrete and leaving a desired length exposed. The anchor setting device includes a body having a bore extending through the body. The body has a first end and a second end. The bore of the body is threaded for releasably receiving a threaded end of a concrete anchor. The body has a slot extending through a side of the body facilitating insertion of the threaded end of the concrete anchor a desired length into the bore. The first end of the body is designed for being struck by an impact device for driving the concrete anchor into a hole in an anchoring surface when the first end of the body is struck by the impact device. The second end of said body is designed for abutting against the anchoring surface when the concrete anchor is driven into the hole.

Abstract: The present invention is to provide a nailing depth adjusting and positioning device for a power nailer in order to protect the distal thread and stabilize the operation. The device having a circular groove formed in a rotatable member and a retainer ring located in a link in order to prevent the rotatable member from being overly rotated (to protect the distal thread), and the disengagement of the device, and having a steel ball and a spring mounted in the rotatable member, the steel ball cooperates with the several gaps in the safety device to locate the rotatable member, such that the starting distance of the device may stably be adjusted. Thereby, the depth of nailing and the position may be successively maintained.

Abstract: A contact mechanism includes a contact top disposed on an outer peripheral portion of a leading end portion of a nose in such a manner that it is slidable along an axial direction of the nose, and a hollow nose top held by the contact top and including an ejection opening formed in front of an ejection opening formed in the nose in such a manner that the ejection opening of the nose top is connected continuously with the ejection opening of the nose. The contact top is connected to an adjuster mechanism through a contact arm and, at the same time, the contact top can be guided by the outer peripheral surface of the leading end portion of the nose.

Abstract: In a driving tool, an air tank 103 is coupled via a pressure reducing valve 104 to a rear end of a handle portion 102 which is disposed substantially perpendicularly to an approximately cylindrical output section 101, and the air tank 103 is configured by: a vertical portion 103a which protrudes in the rear side of the handle section 102; and a horizontal portion 103b which extends in substantially parallel with the handle section 102, whereby the center of gravity 140 of the whole tool is positioned in the vicinity of a gripping portion 130, so that the weight balance is improved and the dimensions are reduced.

Abstract: A trigger assembly for a pneumatic nailer includes a frame having a threaded end on which an end member is threadedly mounted. A spring is biased between the body of the nailer and the frame. An end of a bar is connected to the frame and the other end of the bar is connected to a trigger. A limit member is movably connected to the frame and an engaging member is located on a first end of the limit member. An end member is threadedly mounted to the threaded end and a plurality of notches are defined in an end thereof. The engaging member of the limit member is engaged with on of the notches.

Abstract: A bolt 6, accommodated in a cylinder knob 10, is screwed into a main body 5 to restrict the shift movement of a push lever 1. A spline coupling, provided between a hexagonal bore 10a formed in the cylinder knob 10 and a hexagonal head 6a of the bolt 6, transmits a rotational motion of cylinder knob 10 to the bolt 6 and allows the cylinder knob 10 to slide with respect to the main body 5. A projection 12 of the main body 5 and a notch 10b of the cylinder knob 10, when engaged with each other under a resilient force of a spring 12, cooperatively constitute a stopper for restricting the rotation of the cylinder knob 10 with respect to the main body 5.

Abstract: A trigger assembly for a pneumatic nailer includes a frame having a threaded end on which an end member is threadedly mounted. A spring is biased between the body of the nailer and the frame. An end of a bar is connected to the frame and the other end of the bar is connected to a trigger. A limit member is movably connected to the frame and an engaging member is located on a first end of the limit member. An end member is threadedly mounted to the threaded end and a plurality of notches are defined in an end thereof. The engaging member of the limit member is engaged with on of the notches.

Abstract: A contact mechanism includes a contact top disposed on an outer peripheral portion of a leading end portion of a nose in such a manner that it is slidable along an axial direction of the nose, and a hollow nose top held by the contact top and including an ejection opening formed in front of an ejection opening formed in the nose in such a manner that the ejection opening of the nose top is connected continuously with the ejection opening of the nose. The contact top is connected to an adjuster mechanism through a contact arm and, at the same time, the contact top can be guided by the outer peripheral surface of the leading end portion of the nose.

Abstract: A power force adjustment for a setting tool has a housing (1), a mechanism for adjustment of power force using a adjustment wheel (13) rotatable around an axis (12) and a lever (5) pivotally movable around a pivot axis, the lever preventing any movement of the adjustment wheel (13) when in the locked position and when in the release position allows free rotation of the adjustment wheel (13).

Abstract: A delivery tool is provided for driving fastening devices, for example, U-shaped fastening devices which mount tubing to a surface. The delivery tool has a pivoting structure, including a driving member and a base member. The delivery tool includes a movable ram which is axially guided within the base member to maintain an orientation perpendicular to the surface to drive the fastening devices in a straight manner. A pneumatic impact mechanism is housed within the driving member to assist the ram. The impact mechanism has a concave force delivery member shaped to contact the ram at a generally radial orientation relative thereto, thereby optimally delivering the impact forces to the ram regardless of the angular position of the driving member relative to the base member.

Abstract: A power stapler includes a body with a barrel and a handle is connected to the body by a connection plate. The handle has an open bottom end and an end member is engaged with the open bottom end. A connection portion extends from the handle and a magazine is connected between the connection portion and the barrel. The connection portion has a groove for receiving an L-shaped wrench. A safety device is connected to the barrel and has a collar which is threadedly connected to a base member of the safety device so that the collar can be rotated to adjust a distance between the collar and the object.

Abstract: A nail gun and spacer assembly for ejecting nails into a substrate which contains two or more layers of roofing materials one of which is a compressible fibrous layer. The nails penetrate the substrate but are prevented by the spacer from permanently compressing the compressible fibrous layer which springs back to is original thickness after completion of the nailing process. The spacer, attached to the base of the nail gun, is of semi-oval configuration having a pressure sensitive layer and a solid layer, is provided with an oval cavity in its center portion through which the nails are ejected into the substrate.

Abstract: An adjustable depth of drive device for use on a fastener driving tool. The adjustable depth of drive device includes a thumb post which is mounted to, and extends from a work piece contact element of the tool. Also included is a thumb wheel which is removably attached to the thumb post. A spring member is another part of the adjustable depth of drive device, and it is engagable with the thumb wheel in at least two positions. In a first position, the spring member is frictionally engaged with the thumb wheel to prevent unwanted movement of the thumb wheel relative to the thumb post, and this first position allows for fine adjustments of the position of the work piece contact element. In a second position, the spring member is disengaged from the thumb wheel to permit free rotation of the thumb wheel on the thumb post, which allows for gross adjustments of the position of the work piece contact element.

Abstract: A safety device for a pneumatic nailer includes a push rod which has a connection end extending through an adjusting member and a pivotal member which is mounted by the adjusting member. The adjusting member is rotatable relative to the pivotal member which is connected to a connection plate. The hole for the threaded rod of the pivotal member has tow straight insides matched with two plain surfaces on the threaded rod. Only one groove is required in the adjusting member to receive a clamp whose two legs contact two notches in the pivotal member.

Abstract: A nail driving device with depth guide including an outer cylindrical tube. A tip portion is secured within an open lower end of the outer cylindrical tube. The tip portion has a longitudinal central channel therethrough. The central channel has an open upper end in communication with a hollow interior of the outer cylindrical tube. The central channel receives a nail therein. An inner cylindrical tube is slidably received within the open upper end of the outer cylindrical tube. The inner tube has measurement markings disposed thereon. A plunger portion is secured to s closed lower end of the inner cylindrical tube. The plunger portion includes a stem portion dimensioned for being received within the open upper end of the channel for contacting a head of a nail positioned therein.

Abstract: A stapler includes a barrel slidably received in a housing for engaging with a work piece, and a base having one end adjustably secured to the barrel and having a groove for slidably receiving fasteners. A casing is slidably engaged onto the base, a pusher is pivotally coupled to the casing, and a spring biases the pusher to the casing and biases the casing and the pusher toward the barrel for moving the fasteners into the barrel one by one. The casing and the pusher may be moved away from the barrel by a cam surface when the barrel is moved inward of the housing against a spring.

Abstract: A powerized stapler device is disclosed including an electromagnet, preferably a solenoid, having a armature which is adjustable relative to the solenoid such that the permeable portions of the armature, in the non-energized condition of the solenoid, may be adjusted relative to the solenoid enabling the force exerted by the solenoid to be varied as a function of the initial position of the armature. In a further preferred embodiment, an extension of the armature is engaged with the stapler head whereby movements of the armature relative to the electromagnet also function to vary the space between the stapler head and the stapler anvil, adjustments to process thin work pieces functioning to reduce the spacing between stapler head and anvil as well as reducing the driving force exerted by the electromagnet.

Abstract: 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.

Abstract: A fastener driving device including a fastener depth adjusting assembly comprising a rotary adjusting member having an internal threaded section extending along an axis threadedly mounted on one of an upper and lower structures of a work contact assembly so that a rotational movement of the adjusting member with respect to the one structure effects a relative axial movement therebetween. Mounting structure is provided between another of the upper and lower structures and the adjusting member to mount the adjusting member on the another structure so as to be freely rotatable about the axis while being restrained against axial movement with respect thereto. The mounting structure positions the adjusting member so as to present an exterior surface in an accessible exterior position on a frame structure of the device. The exterior surface has a shape facilitating manual rotational movement of the adjusting member by a manual rolling action thereof.

Abstract: An improved fastener driving tool is provided that is especially adapted to the application of fasteners in trim applications, such as the fastening of wood trim and decorative pieces. The preferred embodiment is a combustion tool, and includes an incrementally adjustable fastener driving depth setting mechanism. The incremental control permits an operator to select from a number of discrete depth settings over a limited range. The preferred tool also includes a distance amplifying fastener lockout. The lockout amplifies a fastener follower movement permitting the blocking of movement of a linkage necessary to tool operation in response to the movement associated with an individual small fastener being dispensed. A trigger and handle of the preferred tool are proximate to the driver blade axis, and the trigger is disposed within an imaginary extension of a fuel canister held within the tool housing.

Abstract: A nailing depth adjusting device for a power nailer includes a link having a nose rod on a first end of the link and a connection plate extending laterally from a second end of the link. A threaded passage is defined in the connection plate for receiving a threaded section on a first end of a rotatable member. A flange extends radially outward from a distal end of the threaded section so that the threaded section will not disengaged from the threaded passage. A second end of the rotatable member is an engaging section which is rotatably mounted to a first end of a push member. A second end of the push member contacts a trigger mechanism of the nailer. The link is moved relative to the rotatable member by rotating the engaging section of the rotatable member.

Abstract: A pneumatic tool, such as a nailer, includes a housing, a cylinder disposed within the housing, and a piston slidably movable within the cylinder. The piston has a driver for driving fasteners, such as nails. An upper piston chamber and a lower piston chamber are defined within the cylinder on an upper side and a lower side of the piston, respectively. A control device is provided for controlling the supply of compressed air from a compressed air supply device to the upper piston chamber and to the lower piston chamber to drive the fasteners into a workpiece. The control device includes a variable pressure chamber and a valve. The variable pressure chamber is always connected to the compressed air supply device. The valve is operable to connect and disconnect the variable pressure chamber and the lower piston chamber in response to the position of the piston relative to the cylinder.

Abstract: A nail holding and driving tool for driving a nail into a structure. The tool includes a body member having opposite first and second ends and a bore therethrough extending between the first and second ends of the body member. The second end of the body member is inserted into an attachment band of a holding member. The holding member has a pair of resiliently deflectable holding arms outwardly extending from the attachment band of the holding member. The holding arms are designed for holding a nail therebetween. A shaft of a driver member is inserted into the bore of the body member through the first end of the body member. The driver member also has a head portion which outwardly extends from the first end of the body member.

Abstract: A stapler includes a nose portion for engaging with a work piece and includes a safety. A sleeve is slidably engaged on the nose portion. A guide is secured to the safety and a shaft rotatably secured to the guide. A rod is secured to the sleeve and has an outer thread threadedly engaged with the shaft for allowing the sleeve and the rod to be adjusted and moved relative to the shaft and the guide when the shaft is rotated relative to the rod. A control ferrule is rotatably engaged with the guide and secured to the shaft for rotating the shaft relative to the rod and for adjusting the sleeve relative to the nose portion, such that the nose portion may he adjusted relative to the work piece.

Abstract: A new tooling for use in a progressive die machine for the installation of self-clinching fasteners onto a sheet of material is provided. It is a complete tool easily mounted into the die during its construction and easily removed for service. Its compact size provides a minimal space between working stations on the die, and its height and stroke are minimized so as not to interfere with other operations on the die. It may be easily configured to allow for insertion of fasteners from either the top or the bottom, and is capable of correctly providing a fastener for insertion upon every cycle of the press. This is accomplished by use of a special bisected bushing which securely holds and positions each fastener in place prior to and during insertion. A replaceable force-limiting material is incorporated in the tooling above the anvil in order not to disrupt the progressive die press should fasteners or materials of excessive thickness be encountered.

Abstract: An improved fastener driving tool is provided that is especially adapted to the application of fasteners in trim applications, such as the fastening of wood trim and decorative pieces. The preferred embodiment is a combustion tool, and includes an incrementally adjustable fastener driving depth setting mechanism. The incremental control permits an operator to select from a number of discrete depth settings over a limited range. The preferred tool also includes a distance amplifying fastener lockout. The lockout amplifies a fastener follower movement permitting the blocking of movement of a linkage necessary to tool operation in response to the movement associated with an individual small fastener being dispensed. A trigger and handle of the preferred tool are proximate to the driver blade axis, and the trigger is disposed within an imaginary extension of a fuel canister held within the tool housing.

Abstract: A device for guiding and inserting dowel pins into tooling plates while also indicating the height to which it has been inserted; which comprises a means to transfer an external force to the dowel pin, a means to guide and hold the dowel pin perpendicular to the plate into which the dowel pin is to be inserted, and a means to indicate the position or height to which the dowel pin has been inserted.

Abstract: An apparatus and method for securing a plurality of modules to a frame to form a box spring includes a base for supporting the frame and the modules, a support, and a drive mechanism coupled to the support and the base. The drive mechanism is configured to provide relative movement between the support and the base. The apparatus also includes a camera coupled to the support. The camera provides an image signal indicative of an actual position of the modules relative to the frame upon relative movement of the support and the base. The apparatus further includes a tool coupled to the support for securing each of the modules to the frame using the image signal from the camera.

Abstract: A piston velocity control and stability control system is provided for a combustion powered tool having a self contained combustion engine. The system includes a ring that may be adjusted relative to exit ports in a cylinder of the combustion engine. The ring includes openings which may be incrementally aligned between a completely exposed, and a substantially closed position relative to the exit ports. Displaced air volume within the cylinder exits through the exit ports as a piston advances down the cylinder, and the velocity of the piston will be greatest when the exit ports are completely exposed. User initiated reduction of the effective size of the exit ports by adjustment of the ring will reduce piston velocity as described per application. A nosepiece used to guide the driver blade and position the blade over a fastener is isolated from the cylinder so that the nosepiece remains stable relative to the workpiece upon combustion and until the driver blade strikes the fastener.

Abstract: A staple gun tacker for driving staples of various leg lengths is disclosed in which the staple gun housing has a front staple gun driving end and a base. The base has a staple discharge opening formed therein through which staples to be driven by the staple gun are discharged into a workpiece. A staple spacer guide is slidably mounted on the staple driving end of the housing and includes a free end which extends beyond the staple discharge opening and the base of the staple gun. Cooperating means are provided on the spacer guide and the housing to enable the spacer guide to be retracted along the housing relative to the base, thereby to control the position of the staple discharge opening relative to the workpiece into which a staple is to be driven. By controlling the position of the staple driving end of the staple gun relative to the workpiece, the depth to which a particular staple is driven in the workpiece can be controlled to avoid damage to the item being stapled to the workpiece.

Abstract: A mechanical driver is provided including a gun-shaped housing having a horizontal upper extent and a vertical lower extent integrally coupled to the upper extent and extending downwardly therefrom. The upper extent has a nozzle. A spring biased actuator rod is slidably situated within the nozzle of the upper extent of the housing. A spring assembly is included for biasing the actuator rod forwardly. A trigger assembly is provided including a trigger hingably coupled to the lower extent of the housing. The trigger is adapted to swivel between an unbiased vertical orientation and a biased rear tilted orientation, whereby the trigger is adapted to bias the actuator rod rearward and further release the same such that the actuator rod drives forwardly within the nozzle.

Abstract: A power fastener driving tool, like a pneumatic trim nailer, of the type for driving fasteners supplied from a collated strip of fasteners disposed in a magazine of the tool. The magazine is coupled to a nose-piece of the fastener driving tool, wherein individual fasteners are sequentially fed into a channel of the nose-piece and driven axially through the nose-piece by a driver blade and into a workpiece. The fastener driving tool includes an improved work contacting element that provides for improved visibility of the nose-piece, an improved depth of drive adjustment for accurately adjusting the work contacting element, an improved hinged nose-piece assembly, and an improved two piece magazine assembly formed of extruded components which provide an accurately dimensioned channel for receiving fastener strips, among other improvements.

Abstract: A piston velocity control and stability control system is provided for a combustion powered tool having a self contained combustion engine. The system includes a ring that may be adjusted relative to exit ports in a cylinder of the combustion engine. The ring includes openings which may be incrementally aligned between a completely exposed, and a substantially closed position relative to the exit ports. Displaced air volume within the cylinder exits through the exit ports as a piston advances down the cylinder, and the velocity of the piston will be greatest when the exit ports are completely exposed. User initiated reduction of the effective size of the exit ports by adjustment of the ring will reduce piston velocity as described per application. A nosepiece used to guide the driver blade and position the blade over a fastener is isolated from the cylinder so that the nosepiece remains stable relative to the workpiece upon combustion and until the driver blade strikes the fastener.

Abstract: A pneumatic nailing machine having a driving depth adjusting mechanism disposed near a trigger. A push lever is vertically movably supported around a nose portion and extends near the trigger. The push lever is divided into an upper section and a lower section, the dividing portion being near the trigger. A cam shaft having first and second cam lobes are rotatably provided near the trigger. A lowermost end of the upper section is in slide contact with the first cam lobe, and an uppermost end of the lower section is in slide contact with the second cam lobe. The cam shaft together with the cam lobes, and the upper and lower sections are concurrently movably supported by a guide plate supported by a main body. By rotating the cam shaft in one direction, a distance between the lowermost and uppermost ends is increased to expand entire length of the push lever.

Abstract: An adapter for a fastener driving tool for controlling depth penetration of a fastener fired from the tool, comprising a lip portion adapted for attachment to a firing portion of the fastener driving tool and extending downward from the firing portion and substantially across to form a recess. The recess, in corresponding alignment with the firing portions engages the fastener when the fastener is fired from the fastener driving tool to allow for a spacing between the fastener and material.