Abstract: A nail lockout assembly provides a way for an operator of a nail gun to have determined whether the nails being employed are properly aligned to allow for efficient operation of the nail gun. The nail lockout assembly may be employed in a nail loading assembly, such as an adjustable angle magazine, which is coupled with a nail driving assembly. A slotted guide member disposed in a housing of the nail loading assembly provides a determination of the angle of the nail loading assembly relative to the nail driving assembly through operational engagement with a projection. A linkage bar is coupled with the slotted guide member and translates the angle of the nail loading assembly to a pusher which engages a nail loaded in the nail loading assembly. A cover serrated member is coupled with a cover of the nail loading assembly. A pawl assembly is coupled with the linkage bar and may engage with the cover serrated member. An adapter couples with the pusher and the pawl assembly enabling rotational movement in each.

Abstract: A nailer includes a gun body, a magazine, a feed plate, a washer barrel, a catch plate, and a locking ring. Thus, the washer is closely positioned between the catch flange of the feed plate and the locking ring, thereby facilitating a user combining the washer with the nail. In addition, the locking ring is tensioned only when the washer passes through the locking ring, so that the locking ring is not maintained at the tightened state constantly, thereby preventing the locking ring from producing fatigue, and thereby enhancing the lifetime of the locking ring. Further, the locking ring is used to stop washers made of plastic or metallic material, thereby enhancing the versatility of the nailer.

Abstract: A nail ejector includes a main body; and a nail magazine mounted on an end of the main body. Thus, the nail ejector is pressed and operated by a user's one palm to eject the nails outward successively. In addition, the nail magazine contains multiple nails which are ejected outward from the shaft hole of the guide tube successively without having to feed the nails repeatedly, thereby greatly saving the working time, and thereby enhancing the working efficiency.

Abstract: A stapler anvil and method for clinching a staple is disclosed. The anvil includes a body having a well. The well has an axis extending between the legs of a staple and is defined by a first surface having a first portion along which the first leg of the staple is directed as the staple is being clinched, and a second portion extending substantially at an angle relative to the first portion to direct the second leg of the staple at least partially away from the axis as the staple is clinched. The well is further defined by a second surface spaced from the first surface. The second surface is configured to redirect the second leg of the staple at least partially back toward the axis after the second leg has been directed at least partially away from the axis by the second portion of the first surface.

Abstract: A fastener insertion device includes an actuator that is either pneumatic or manually operated. The fastener insertion device is illustratively configured to receive either a staple magazine or a stake magazine. The stake magazine can house stakes of different dimensions. The pneumatic actuator includes a charging chamber and a control apparatus. The control apparatus comprises two valves, and is disposed between the charging chamber and a pneumatic cylinder.

Abstract: A nailing machine, in which a part constituting a nose is changed so as to increase the service life of a driver blade for driving a nail. The nailing machine includes a nose having a nose hole in which the nail is supplied, and the driver blade made of metal. At least a part of a surface of the nose hole to be in contact with a front surface of the driver blade is provided with a protective body. The protective body is made of an organic material or a composite material of an organic material and a metal material. Due to this, direct mutual contact of the metal parts is prevented.

Abstract: A desktop stapler uses a spring to store energy to install staples by impact blow. The force required to fasten papers together is reduced. A very compact mechanism is used, including a dual coil power spring with a nested lever. A multi function base provides a sloped front all the way to down to a desk top surface to guide paper sheets atop the base, easy access for lifting the stapler off a desk, horizontal or vertical resting positions, and integrated soft grip under-surface. The base surrounds the rear of the stapler body to provide a smooth exterior so that the device is natural to use both horizontally and vertically. A simple re-set spring provides a smooth re-set action as the handle is raised. A staple track includes enlargement features to fit a larger staple pusher spring.

Abstract: Disclosed is a nailing machine capable of indicating an existence or non-existence and the residual quantity of a nail in a cartridge. The nailing machine includes a main body, a nose portion and a cartridge. The main body includes a trigger lever mounted to a lower portion of a grip portion. The cartridge has a pressing plate and a pressing spring. The nailing machine further comprises a displaying unit having a display plate, a connecting plate and a trigger lever stopper. An alarming unit includes a first and a second ground plates, a battery and a recognition part. The conductive plate selectively contacts with the first ground plate and the second ground plate. The trigger lever may be stopped in accordance with the detection result after notifying a worker that the nail is exhausted with generating an audible alarm sound and a visual alarm light.

Abstract: A staple cartridge includes: a cartridge body for accommodating a large number of staples; and a face plate provided at a front end portion of the cartridge body, for forming a striking passage (211) of striking a staple by a driver, wherein support pieces are integrally formed from both side edges of the face plate to the rear, engaging bosses formed in the support pieces are engaged with recess portions formed on both sides of the front end portion of the cartridge body (206), and the face plate is slidably and pivotally supported by the cartridge body (206). In the cartridge body (206) and cover (209), the small thickness grooves (215), (216), by which the staple cartridge (204) is bent into two pieces, are formed on the circumference of the staple accommodating portion.

Abstract: A safety device for a pneumatic nailer includes an attached tube connected to the magazine of the nailer and including a first passage for movably receiving a first pine and a second passage for movably receiving a second pin. A driving piece is pivotably connected to the attached tube at a mediated point of the driving piece. A spring is received in the second passage and biased between a closed end of the second passage and a first end of the second pin. A second end of the second pin is retractably extended through an open end of the second passage by the spring and can be inserted in a locking hole of a safety bar movably connected to the barrel of the nailer. Two ends of the driving piece are respectively connected to the first pin and the second pin such that when no nails are located in the barrel, an end of the first pin is extended into the magazine while the second pin is inserted in the locking hole of the safety bar to lock the safety bar.

Abstract: A nail gun for conveniently nailing fasteners of different sizes and/or types is disclosed. The nail gun includes a body and a nail storage mechanism. The body includes a selectively operable drive mechanism. The nail storage mechanism includes first and second supply magazines movably mounted to the body whereby each supply magazine is selectively moved into position for use. Each supply magazine is loaded with nails of different sizes and/or types. Each supply magazine is selectively moved relative to the drive mechanism to a drive position wherein the supply magazine is operably arranged with the drive mechanism to selectively discharge a nail in a firing position from the supply magazine. A mounting mechanism is provided to pivotally mount the supply magazines to the body. The body includes a supply magazine support mechanism, which is selectively cooperate with the supply magazine in the drive position to support that supply magazine.

Abstract: A staple cartridge that sequentially draws out rolled staple band material from the staple storage portion includes regulating device that touches the stacked surface of the rolled staple band to regulate the widening and unraveling of the stacked surface. The regulating device is capable of regulating the widening of the stacked surface of the staple band material in the roll diameter direction even during vibration of the cartridge. This minimizes the phenomenon of the staple band material biting to or catching on the staple cartridge.

Abstract: An apparatus for adjusting width of drive channel of nailer has a slot defined at a side surface of a track of the channel assembly, in the slot are defined a plurality of recesses and an adjustable push plate a plurality of blocks are defined on the push plate, the width of track can be increased when the blocks are inserted in the respective recesses, and alike, the width of track can be reduced when the blocks abut against the internal surface of the slot. By such a manner, the apparatus of the present invention is capable of providing suitable drive channel for different sized nails.

Abstract: A safety catch mechanism for nail guns comprises a through hole at the upper end of a magazine of the nail gun, an axle section protruded from one side of the magazine and pivotally coupled with a rotary rod, a blocking arm extended from the rear end of the rotary rod, a blocking plate bent from the rear end of the blocking arm for being extended and blocking the rear of the trigger; wherein a push arm is extended from the front end of the rotary rod; a limit bracket is movably embedded at the end of the push arm; a latch is defined on the limit plate to be protruded from an inner wall of the magazine; by means of the foregoing structure, if the magazine is loaded with nails, the latch can be pushed outward to drive the rotary rod to rotate, so that the blocking plate is separated from the rear of the trigger and allows users to cock the trigger.

Abstract: A nail feeding mechanism is provided with a front feed claw (9) and a rear feed claw (10). The rear feed claw (10) is provided with a contact portion (10b) on a front side of a claw portion (10a). A face of the contact portion (10b) to be brought into contact with connected nails is wider than a gap between nails in a width thereof and cannot enter between nails. When the front feed claw (9) is moved rearward and catches a final nail (TN1) of a first row, the contact portion (10b) and the claw portion (10a) move into a nail path, the contact portion (10b) enters between the final nail (TN1) of the first row and a front nail (FN2) of a second row and the claw portion (10a) enters a rear side of the front nail (FN2) of the second row.

Abstract: A staple cartridge which is composed in order to guide a leading end (20a) of a replacing roll staple (20) provided with a band (21) to a guide path (12) with pulling out a leading end of the band (21) from a front portion (11) of an operable and closable lid (2) to load the roll staple (20) and with rotating the roll staple (20) in a staple loading room (6) in a state in which the lid (2) is closed. Roll abutment portions (10) are arranged on the inner surface (2a) of the staple loading room (6), the roll staple (20) which is located between the roll abutment portions, are rotatably held by them striding an adhesive portion (A) to prevent a contact between the inner surface (2a) and an adhesive portion (A) which has an adhesive material.

Abstract: A cartridge comprises a sheet staple detecting mechanism (60) for detecting presence and absence of sheet staples (ST) stacked on a bottom having an opening (23A). The sheet staple detecting mechanism (60) includes a detected member (30) having leg parts (32, 32, 33 and 33), which are disposed on the uppermost surface of the stacked sheet staples (ST) and configured to be inserted in the opening (23A) when the sheet staples (ST) are not disposed on the bottom (23), an actuator (40) rotated at the time the leg parts (32, 32, 33 and 33) are inserted in the opening (23 A), and a micro-switch (50) for detecting the rotation of the actuator (40).

Abstract: A device for preventing short nails of a nailing gun from being deadlocked includes a slot-sealing member provided under the gunpoint of a nailing gun. The slot sealing member has its topside formed with an elongate slot sealing portion for sealing up the front slot of the nail row inlet of the gunpoint when the slot sealing member is pushed inward, preventing a short nail from being deadlocked when it is struck in a work. When the slot sealing member is pushed outward, its sealing portion will be moved away from the front slot of the nail inlet to completely open the nail row inlet for facilitating loading a long nail formed in a row in the gunpoint, unnecessary to disassemble the slot sealing member from the gunpoint when a row of long nails and short nails are loaded alternately, and easy and quick in operating.

Abstract: A hammer-operated stapling apparatus which is characterized by a spring-loaded plunger having a staple drive plate that slidably extends between a front head and a back head to sequentially contact staples seated in a staple magazine attached to the back head. The staple magazine is closed by a pivoting cover fitted with a removable spacer and includes removable staple rails for accommodating staples of various size, which staple rails are fitted with a sliding follower biased against the staple string or cartridge by a follower spring seated on the staple rail. A handle is mounted to the front head and back head assembly and typically includes a hand guard for safely positioning the ends of the front head and back head on a wire or other element to be stapled to a post or board and facilitating striking of the plunger by the hammer to drive a staple into the board or post and secure the wire or element in place.

Abstract: A framing point driver system for efficiently driving various framing points into a picture frame. The framing point driver system includes a lever unit, a turret member with a plurality of receiver apertures rotatably attached to the lever unit, a shaft member extending from the lever unit, and an engaging arm lockably positioned about the shaft member. The user rotates the turret member so that the desired size receiver aperture is facing toward the engaging arm. A framing point is inserted into the selected receiver aperture for insertion into the picture frame.

Abstract: An apparatus which enables a user of a pneumatic tool device, such as a nail gun, to determine the required compressor pressure needed to most effectively utilize the pneumatic tool device and maximize the life of the tool. A compressor pressure indication assembly on a nail gun comprising a nail verification assembly and a readout assembly enables a user to verify the length and/or diameter of the nails to be driven by the nail gun and set the compressor pressure accordingly.

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: A powered nail-driving tool includes a striking rod disposed in a shell and thrust into a feeding region of a nail-discharging passage in a barrel along an impact line to force a leading nail of a selected one of ranks of nails oriented along different lines of inclination. A nail magazine has a nail-feeding channel for accommodating the selected rank of nails. A linking arm is secured to a leading edge wall of the magazine, and is pivotally mounted on the barrel such that the magazine is turnable so as to permit the inclination line of the selected rank to align with the impacting line. Thus, the tool can be used for driving different ranks of nails.

Abstract: There is provided self piercing rivet comprising a substantially planar metal body portion (160) having deformable tabs (161) symmetrically disposed about a slit (162) as per the first embodiment. The upper portion of the body portion (160) is provided with a V-shaped recess (163) diverging from a point (164) adjacent the centreline of the body portion (160) and terminating at the upper edge (165) of the body portion (160). The V-shaped recess (163) divides the upper portion of the body portion (160) into head tabs (166) disposed to each side of the body portion (160). The upper remaining edges of the head tabs (166) enable the rivet to be partially driven and then set by deformation of the deformable tabs (161) and the head tabs (166) against respective sides of the riveted workpiece. Methods of producing the rivets and tools for their use are also provided.

Abstract: A hammer-type stapler with cartridge is a tool using in building working for driving staples into a working object, comprising a casing having a hollow hammer casing on the front portion of the casing for containing a driving unit. The driving unit moves vertically by inertia force and having a driving element for driving staples, and an elastic element for recoiling the driving unit. A replaceable cartridge is installed in the casing and adjacent to the driving element having two identical, upper and lower staple containers. A pushing device is slidably mounted in the casing for holding the cartridge and pushing staples. The cartridge can load different size staples.

Abstract: A positioning staple case of a stacker includes a gun air-firing mechanism at one end thereof. The staple case is consisted of left and right staple cases. The invention is characterized that, the left staple case has a plurality of pressing strip and a lower side rod disposed on an inner lower side of the left staple case. Using the aforesaid structure, staples having different depths are rested on an upper portion of the lower side rod, and an upper portion of the staples is pressed against a lower portion of a specific pressing strip having a suitable depth for the staples, with the pressing strips located at a highermost position being pushed into the channels using the staples, thereby pressing against staples having different depths in a steady manner.

Abstract: The invention discloses a user selectable shaped staples and a stapler for dispensing the user selectable staples. The stapler has a replaceable guide housing assembly designed for the particular user selectable staple having components including a punch, die and guide conforming substantially to the shape of the head of the staple for driving the user selectable staple into a designated material, such as sheets of paper, selected for the fastening method. The staples are comprised of a head portion and parallel leg portions with the legs extending substantially perpendicular from the planar head portion and wherein the head portion is of a style depicting a form such as a trademark, company logo, a letter or symbol of any kind.

Abstract: A magazine includes a feeding tray adapted to be secured to a powered nail-driving tool and to accommodate stacked layers of nails, a gate member slidably disposed on the feeding tray to urge the lowermost layer of nails toward the tool, a nail-supplying member disposed over the feeding tray and having a stacking opening which is communicated with the feeding tray and which receives the layers of nails, and a separating member interposed between the nail-supplying member and the gate member. The separating member is coupled to the gate member so as to be movable therewith away from the stacking opening in a retracting course of the gate member for loading of the nails into the feeding tray, and to be moved underneath the stacking opening in an advancing course of the gate member.

Abstract: A construction tool and method of use for affixing holding cap washers to roofing paper and building wrap tar paper. The tool is a combination of a fastener-driving gun together with a feeding magazine holding a clip of plastic cap washers to be affixed, and the feed magazine feeds successive cap washers under the nose of the fastener-driving gun so that fasteners, such as nails or staples, can penetrate the cap washer and hold down the roofing paper or building wrap tar paper. As the cap approaches the nose of the gun, the cap feeder flips the cap ninety degrees along an axis transverse to the feed direction. A shortened shuttle is used with a spring arm holding one edge of the leading cap in the magazine and the rearward portion of the shuttle holding the other edge of the leading cap.

Abstract: A magazine for use with a fastener driving tool comprises a slider and a housing defining a chamber, a follower positioned in the chamber to bias fasteners arranged in a strip, and a longitudinal guide member within the magazine chamber to guide fasteners. The longitudinal guide member comprises two fingers that extend inwardly from the slider and prevent the fastener strip from skewing when inside the magazine chamber.

Abstract: An adapter attached to a fastener driving tool for installing siding on a structure. The adapter has a front face and a back face with an opening formed therebetween. A cavity is formed in the back face and a face plate of the fastener driving tool is received in the cavity. A jaw is formed on the front face of the adapter. The jaw on the adapter is abutted to the lateral ridge on the siding and the adapter is aligned with a selected lateral slot in the siding. The fastener is driven into the lateral slot with the head of the fastener spaced a predetermined distance from the structure.

Abstract: A desktop stapler uses a spring to store energy to install staples by impact blow. The force required to fasten papers together is reduced. A very compact mechanism is used, including a dual coil power spring with a nested lever. A multi function base provides a sloped front all the way to down to a desk top surface to guide paper sheets atop the base, easy access for lifting the stapler off a desk, horizontal or vertical resting positions, and integrated soft grip under-surface. The base surrounds the rear of the stapler body to provide a smooth exterior so that the device is natural to use both horizontally and vertically. A simple re-set spring provides a smooth re-set action as the handle is raised. A staple track includes enlargement features to fit a larger staple pusher spring.

Abstract: A magazine with bolt-shaped fastening elements for a setting tool and extending sidewise of a bolt guide of the setting tool and including an attachment region (2) provided at an end region of the magazine (1) facing in the setting direction; and a washer holder (6) releasably attachable to the attachment region (2) and having a central axis that extends substantially coaxially with a central axis of a receiving bore of the bolt guide (3).

Abstract: Disclosed is a nailing machine capable of indicating an existence or non-existence and the residual quantity of a nail in a cartridge. The nailing machine includes a main body, a nose portion and a cartridge. The main body includes a trigger lever mounted to a lower portion of a grip portion. The cartridge has a pressing plate and a pressing spring. The nailing machine further comprises a displaying unit having a display plate, a connecting plate and a trigger lever stopper. An alarming unit includes a first and a second ground plates, a battery and a recognition part. The conductive plate selectively contacts with the first ground plate and the second ground plate. The trigger lever may be stopped in accordance with the detection result after notifying a worker that the nail is exhausted with generating an audible alarm sound and a visual alarm light.

Abstract: A compact, lightweight and rechargeable electric stapler for automatically punching holes in documents and the like is provided wherein a fixed switch is fixed to the case body and an actuating bar is moveable at the front end and back end, so the switch is durable and also the presence of staples can be determined at a glance with a LED. The electric stapler comprises a case body, drive train, wiring board, magazine frame, an arm, a fixed switch wherein an actuating switch for actuating the drive train (motor) is mounted on the case body, and a moveable actuating bar coupled to the fixed switch and mounted between the case body and frame.

Abstract: A cartridge for a driving device includes a stationary part extending transversely from a nose plate, and a slidable part mounted slidably on cooperating with the stationary part to define a nail-receiving channel which has an inverted U-shaped portion and a straight branch portion. The U-shaped portion has a bight segment and opposing segments extending downwardly and respectively from two opposite ends of the bight segment toward a discharging end of the nose plate. The straight branch portion extends upwardly from one of the opposite ends of the bight segment in the vertical direction.

Abstract: A tool has an improved nosepiece and shear block assembly that drives a fastener supplied from a plurality of fasteners. The assembly includes a nosepiece that is configured for attachment to the tool and defines a portion of a barrel and a shear block configured to be secured to the nosepiece to complete the barrel. There is an opening in barrel has for receiving a fastener. The assembly also includes a biased fastener-size adjustment device, which exerts a biasing force against fasteners adjacent the opening.

Abstract: A hammer-type stapler with cartridge is a tool using in building working for driving staples into a working object, comprising a casing having a hollow hammer casing on the front portion of the casing for containing a driving unit. The driving unit moves vertically by inertia force and having a driving element for driving staples, and an elastic element for recoiling the driving unit. A replaceable cartridge is installed in the casing and adjacent to the driving element having two identical, upper and lower staple containers. A pushing device is slidably mounted in the casing for holding the cartridge and pushing staples. The cartridge can load different size staples.

Abstract: A nail ejector includes a main body; and a nail magazine mounted on an end of the main body. Thus, the nail ejector is pressed and operated by a user's one palm to eject the nails outward successively. In addition, the nail magazine contains multiple nails which are ejected outward from the shaft hole of the guide tube successively without having to feed the nails repeatedly, thereby greatly saving the working time, and thereby enhancing the working efficiency.

Abstract: A combustion power framing tool the invention has a nosepiece for driving fasteners, a housing and a combustion chamber that produces primary power held within the housing. A fastener supply, such as a magazine, is attached to the housing to supply the fasteners. The tool has detects a condition and produces a signal based on that condition, then causes the primary power to vary in relation to the signal, returning the primary power to full power following driving of the fastener.

Abstract: A forward acting stapler includes a unique linkage for driving a firing lever. The linkage includes two links which are each connected to the trigger lever by a roller. The roller is movable within a spot in the trigger lever. As the handle is driven, the two links cause the triggering level to pivot. As the trigger lever pivots it lifts a plunger against a spring force. At some point, the trigger portion releases the plunger allowing the plunger to be returned by the spring force by a staple.

Abstract: A powered tool constructed to drive a fastener into a workpiece includes a nosepiece assembly including a back plate and a front plate combining to define a path for a driver blade, the front plate being pivotally movable relative to the back plate between a closed position, in which the front plate and the back plate are in contact with each other, and an open position. The front plate is movable to an interim deflecting position between the closed position and the open position. A handle portion has an outer surface at least partially defining a grip, and an inner surface at least partially defining a chamber. The handle portion includes a substrate having at least one aperture, and an overmold configured for forming a gripping surface on the outer surface and for extending through the apertures into the chamber for forming a resilient mounting point.

Abstract: A pneumatic gun for fixing elements, comprising a body (2) provided with pneumatically-actuated means for expelling the fixing elements, a handle (3) that protrudes from the body (2) and a magazine (4), for storing and individually feeding the elements, defined by a box-like container (11) provided with a sliding flap (13) for inserting the elements, the body (2) being provided with a working head (8) for driving the elements that can be coupled to a complementary end head (9) of the box-like container (11) that is affected by an opening (18) for the passage of the elements and is adapted to form, together with the head (8), a firing channel (7) for the elements; the gun comprises a guide (38) that runs from the head (8) to the handle (3) and with which the box-like container (11) is coupled slidingly so as to allow a manual translational motion of the magazine (4) from a first active end position, in which the complementary head (9) is adjacent to the head (8), allowing the expulsion of the elements through

Abstract: A portable setting tool includes a housing (2), a guide tube (3) for guiding the fastening elements and connectable with the housing and having a side cut-out through which the fastening elements are fed into the guide tube (3), and a feeler (13) extendable into the guide tube (3) at a location opposite the cut-out (11) of the guide tube (3) and having, at an end thereof extendable into the guide tube (3), an end surface (13a) providing for displacement of the feeler (13) in a direction transverse t a longitudinal axis (14) of the guide tube (3) upon being acted upon by a fastening element, and an adjusting rim (17) adjoining the end surface (13a) and forming, with a longitudinal axis (14) of the guide tube (3), an acute angle (&agr;1) opening in a direction toward a mouth opening of the guide tube (3) with the adjusting rim providing for displacement of the feeler (13) in the transverse direction upon being acted upon by an object displaceable along the longitudinal axis (14) of the guide tube (3).

Abstract: A pneumatic nailer includes body for receiving the piston therein and a barrel is rotatably and movably inserted in a connection tube extending from the body. The piston rod is movably inserted in the barrel for ejecting the nail fed in the barrel. A magazine is connected to the barrel so that the magazine is rotatable relative to the body so that the magazine is rotated a new position and used in a space that the conventional magazine cannot be inserted.

Abstract: A cap assembly for an automatic cap feeder and fastener driver comprises a plurality of relatively thin, domed metal discs that can be pierced by fasteners discharged from a fastener driver such as a nail gun without bending the nail or jamming the driver, with the caps being connected together by a paper backed adhesive tape mounted on the undersides of the concave caps, with the caps having outer edges that are sufficiently sharp that they sever the tape from the strip of caps when the caps are driven into a substrate after a fastener has penetrated the caps. The fastener driver includes improved feeder teeth and an anti-backup pawl that extend into recesses in the track. A cover encloses an open edge of a cap storage basket.

Abstract: A stapler comprising a base defining a horizontal plane, a cartridge assembly coupled to the base at a cartridge attachment point, the cartridge assembly including a ram, and a lever arm pivotally coupled to the base at a lever pivot axis. The lever arm includes a grip for receiving a manual input from a user, and the lever arm is coupled to the ram at a ram input in order to provide a drive force. The stapler includes an inherent force factor, calculated as the horizontal distance from the lever pivot axis to the end of the lever arm divided by the horizontal distance from the lever pivot axis to the ram input, of at least 3.8. Preferably, the lever arm defines an effective lever axis that is at least about 65° offset from the ram axis when in the static position. When stapling, the effective lever axis is preferably offset greater than about 95° when the lever arm is compressed to the fully stapled position.

Abstract: A magazine assembly for a fastening tool. The magazine assembly includes a feed mechanism having a fastener follower that includes a cam device. The feed mechanism also includes a cam follower which is employed to engage the cam device so that fasteners may be loaded into the magazine assembly. The cam follower alternately engages and disengages the cam device in response to movement of the fastener follower relative to the cam device. A method for operating a fastening tool is also provided.

Abstract: A portable electric nailing gun operating from a power source. The motor accelerates a flywheel which at the appropriate energy state is coupled through a mechanism to an anvil acting directly on the nail. The motor accelerates a flywheel that is then clutched to the output anvil causing the nail to be driven. The position of the output anvil is sensed and once the nail is driven, the motor is dynamically braked reducing the excess energy in the flywheel. This method uses a highly responsive motor and power source which enables the motor to come up to speed, drive the nail and return to a low energy condition in less than 2 seconds. The electrical control circuit and brake allow precise control and improve safety. The power source is preferably a rechargeable low impedance battery.

Abstract: A fastener driving tool has a tool body with an axis, a piston, a muzzle extending from tool body, and a magazine coupled to the muzzle. The fastener driving tool has an axial locking mechanism associated with a rotatable muzzle to releasably lock the muzzle and coupled magazine in at least one position. The axial locking mechanism comprises male members and female members with the male members biased axially into the female members.