Abstract: A chainsaw is provided having a brake band disposed about a drum that rotates during advancement of the saw chain about the saw bar. An end of the brake band is biased to a position that draws the brake band tight about the drum to prevent advancement of the saw chain, and the throttle trigger of the chainsaw is associated with this biased end to push the band against the bias and release the drum when the throttle trigger is squeezed to drive the elements of the chainsaw that serve to advance the saw chain. Also provided are new concepts for associating gasing and braking elements with the throttle trigger.

Abstract: A saw chain tensioning mechanism for adjusting the tension in a saw chain extending around a chain guide plate includes a threaded rod member disposed adjacent to a rear end of the chain guide plate and along the longitudinal direction of the chain guide plate, a movable member engaged with the chain guide plate and adapted to be moved along the threaded rod member by a rotation of the threaded rod member, and a driving gear integral with the threaded rod member. The tensioning mechanism includes a driving gear for rotatively driving the driving gear and an operating member for manually rotating the driving gear. Manipulating the operating member changes the longitudinal position of the chain guide plate and correspondingly causes a change in a tension of the saw chain.

Abstract: The invention pertains to a handheld implement, in particular a portable chainsaw (100), with a handle housing part (12) that contains at least one carrying handle (10), and with at least one motor housing part (16) that carries a drive unit (14) and is connected to the handle housing part (12) by means of an antivibration system that consists of at least one vibration-reducing element (18). The invention proposes an antivibration system of this type, in which the above-mentioned problems are solved due to the fact that an exchange of the vibration-reducing elements can be eliminated, wherein the antivibration system is still able to fulfill the individual requirements of the operator and the machine. This is achieved due to the fact that the at least one vibration-reducing element (18) is realized such that it can be adjusted with the aid of a tool or without requiring a tool.

Abstract: A chain saw bar tensioning apparatus is disclosed comprising a sliding member having a recess formed therein. The sliding member is adjacent to a first tensioning member that biases the sliding member in a direction such that when the apparatus is incorporated into a chain saw bar and mounted to a chain saw having a mounting stud, the sliding member is biased towards the mounting stud. The apparatus further comprises a latch adjacent to a second tensioning member. The recess of the sliding member is configured to receive the latch and the second tensioning member biases the latch towards the sliding member such that, when the sliding member is forced in a direction away from the mounting stud, the latch will eventually enter the recess and prevent the sliding member from moving towards the mounting stud.

Abstract: A chain saw includes an engine, a chassis, and a clutch cover. A guide bar is adjustable relative to the chassis and the clutch cover, but stationary while in a secured position. An adjustment arrangement moves the guide bar to tension a chain, and includes a member operatively connected to the bar, intermeshed drive components to move the bar, and a manually engaged member that is operated without use of any tool. A guide bar securing arrangement has a knob rotatable between a tightened and loosened positions. In the loosened position, the guide bar may be adjusted. A knob handle of the securing arrangement is pivotable between a stowed position and an operation position. A lock arrangement, associated with the knob and knob handle, includes portions that cooperate to prevent the knob from rotating when the knob handle is in the stowed position.

Abstract: The present invention is an electric pole saw featuring a novel saw powerhead mounting bracket assembly comprising interlocking bracket halves molded to conform to the opening and contours of the saw provided between the rear handle, knuckle guard and main body of the saw, to control angular movement or twisting between the bracket-halves and between the powerhead and the bracket, and also utilizing single-point fastening means for fast and easy assembly of the bracket without tools.

Abstract: A retaining assembly is provided for a tensioning arrangement for adjusting the tension of the cutting chain in the chainsaw. The retaining assembly includes a knob body, a lock, and a lever. The lock and lever rotate about a common axis, which is perpendicular to an axis of rotation of the retaining assembly. The lock includes a tooth adapted to engage with teeth on a clutch cover of a chainsaw to lock the retaining assembly in place.

Abstract: A portable motor chain saw comprises a machine body (1) which a driving unit, a rear handle (2), a front handle which extends over the machine body, a guide bar (6), and a dog device (15) provided such that it can be pressed against the object to be worked by means of the machine, said dog device forming a center of rotation for turning the guide bar in the plane of the guide bar. The characterising features are that the dog member (15) is provided in front of the front handle (3), approximately on a level with that part (4) of the front handle which extends over the machine body, and is connected to the front handle, and that at least that part of the dog device which is provided to engage the object to be worked, consists of a polymeric material. Preferably, the height of the dog device over the guide bar corresponds to two to three times the vertical width of the guide bar.

Abstract: A machine for cutting plate-shaped workpieces, incorporates a tool guide (7), an operating handle (13), and a cutting tool (6) which revolves along the tool guide (7). By moving the operating handle (13), the tool guide (7) with its cutting tool (6) can be shifted from an idle position into an active position. In its idle position the cutting tool (6) is disengaged from, and, in its active position it is engaged in, the workpiece to be processed. Provided between the operating handle (13) and the tool guide (7) is a variable ratio transmission mechanism (14, 18) with a transmission ratio which varies with the movement of the operating handle (13) as a function of the position of the tool guide (7) and its cutting tool (6) relative to the workpiece.

Abstract: A tree harvesting guide bar adapted for treating stumps with a treatment material as the tree is being harvested is provided, and more particularly a valve arrangement for enabling connection of the guide bar inlet to treatment material sources on a variety of different harvesting machines is disclosed, such that the inlet not connected to the treatment material source does not need to be independently and manually plugged to prevent undesirable outflow.

Abstract: A manually operated implement is provided having a housing fixed on a frame and accommodating an internal combustion engine that is adapted to drive a tool. The implement has a front hand grip secured to the frame, and a rear handle secured to a side of the frame that is remote from the tool. The rear handle is mounted to the frame in such a way as to be rotatable about an axis of rotation. A mounting is provided that comprises a pin mounted in a receiver, the receiver being embodied such that it is adapted to be split.

Abstract: A lightweight guide bar formed from a heavy material, e.g., steel, and having a center section, e.g., a cavity of reduced material and fitted with a lighter weight insert, e.g., aluminum plate. The center section includes a flange to which the aluminum plate is adhered and a spacer lip defines the desired thickness of the adhesive. Adhesive is applied to the desired thickness under the lip and the aluminum plate is abutted against the lip and into contact with the adhesive for adhering of the plate to the flange. In a preferred embodiment, the flange is a continuous web down the center of the center section and insert plates are adhered to each side of the web. Also, preferably the inserts are oval and symmetrical and are selectively mechanically secured to the flanges by rivets.

Abstract: A chain saw which includes chain tensioning and braking systems. Tensioning and braking are caused by the presence and control of longitudinal and lateral slits in an elongated support which provides a continuous chain channel guide in its outer circumference.

Abstract: The invention concerns a motor powered saw with a saw chain (2) and a guide bar (1), the rear portion of which is covered by a side cover (3) and during operation clamped with a certain clamping force between the side cover and a counter support on that side of the guide bar which is turned towards the motor, tensioning elements being provided for tensioning the saw chain by displacing the guide bar forwards, when the guide bar has been loosened by easing the clamping force, and elements for securing the guide bar in a new position.

Abstract: A tensioning mechanism for adjusting tension of a cutting chain in a chain saw. A rotatable knob operates with an engine chassis, clutch cover, and guide bar, whereby the knob may be rotated between a tightened position and loosened position, by which the guide bar is loosened and may be adjusted. The knob is provided with a knob handle, pivotally connected to the knob and pivotable between locked and unlocked positions. When the knob handle is in the locked position, at least one, but not all, of a plurality of handle engagement points engage with corresponding fixed engagement points that are fixed relative to the clutch cover. When the knob handle is in the unlocked position, the handle engagement points are disengaged from the fixed engagement points. Further, the engagement points are visible when the knob handle is in both locked and unlocked positions.

Abstract: A vibration damper is disposed between two components (2, 3) of a portable handheld work apparatus (4). The vibration damper is held especially between a housing (6), which holds an internal combustion engine (5), and a handle (7) which is fixed on the housing (6) for guiding the work apparatus (4). The vibration damper includes a coil spring (9) and respective attachment elements (11, 12) at the ends (10, 13) of the coil spring. A coupling member (17) is provided to ensure that the work apparatus can be guided notwithstanding a break of a coil spring. The coupling member (17) projects through the coil spring (9) and bridges the axial distance (16) between the attachment elements (11 and 12). The coupling member (17) is connected to each attachment element (11, 12) so that it cannot separate therefrom.

Abstract: A portable work apparatus, especially a motor-driven chain saw (1), has a drive unit which is provided with a handle housing (3). The handle housing (3) includes an extension (9) which extends in the longitudinal direction of the work apparatus from a rearward handle (8) on the side facing away in the longitudinal direction from a guide bar (6) forward to the side facing toward the guide bar (6). The handle housing (3) is connected via antivibration elements to the drive unit. The work apparatus has a forward handle tube (4), which extends over the work apparatus transversely to the longitudinal direction and is attached with an end (10) to the free end of the extension (9) and with the other end (27) in the area of the rearward handle (8). At least one of the ends (10, 27) of the handle tube (4) is fixed via an antivibration element (11, 25, 26, 28, 34).

Abstract: A chain saw bar tensioning apparatus is disclosed comprising a sliding member having a recess formed therein. The sliding member is adjacent to a first tensioning member that biases the sliding member in a direction such that when the apparatus is incorporated into a chain saw bar and mounted to a chain saw having a mounting stud, the sliding member is biased towards the mounting stud. The apparatus further comprises a latch adjacent to a second tensioning member. The recess of the sliding member is configured to receive the latch and the second tensioning member biases the latch towards the sliding member such that, when the sliding member is forced in a direction away from the mounting stud, the latch will eventually enter the recess and prevent the sliding member from moving towards the mounting stud.

Abstract: A chain saw chain braking system, positioned in a continuous channel guide through which chain linking elements slide freely during use, unless the slidability is impeded by its operation.

Abstract: A lightweight guide bar formed from a heavy material, e.g., steel, and having a center section, e.g., a cavity of reduced material and fitted with a lighter weight insert, e.g., aluminum plate. The center section includes a flange to which the aluminum plate is adhered and a spacer lip defines the desired thickness of the adhesive. Adhesive is applied to the desired thickness under the lip and the aluminum plate is abutted against the lip and into contact with the adhesive for adhering of the plate to the flange. In a preferred embodiment, the flange is a continuous web down the center of the center section and insert plates are adhered to each side of the web. Also, preferably the inserts are oval and symmetrical and are selectively mechanically secured to the flanges by rivets.

Abstract: A battery operated chain saw including a frame, an electric motor and a battery. The frame includes a housing and a chain bar. The frame forms a front handle and a rear handle. The electric motor is connected to the frame. The battery is coupled to the electric motor. The battery is located at a position on the frame proximate the front handle to provide a front-to-rear chain saw center-of-gravity located proximate the front handle. The battery is part of a power pack removably connected to the frame. The power pack is located spaced from a front-to-rear centerline of the frame located along the chain bar. The power pack includes an electrical coupling side which is not located on a lateral side of the power pack.

Abstract: A portable handheld work apparatus such as a motor-driven chain saw includes a housing (6) of a drive unit (2). The following are mounted in the housing (6): an internal combustion engine (3), a carburetor (4) for fuel metering and an air filter (5) as well as a fuel tank (8). The air filter (5) is mounted ahead of the carburetor in the flow direction of the fresh air flow. A largest possible filter action is obtained with a compact configuration in that a housing (10) of the air filter (5) lies at least partially in a space between the carburetor (4) and the fuel tank (8).

Abstract: A pole pruner that is lighter in weight than professional-grade pole pruners is provided, thereby making available a consumer-grade a pole pruner that is lightweight, low in cost, and easy to use. Additionally, a pole pruner according to one aspect of the present invention has a compact and contoured profile, thereby substantially preventing the pole pruner from becoming lodged or ensnared in tree limbs or other vegetation. Further, a pole pruner according to another aspect of the present invention includes a gear design that reduces noise and produces less vibration than prior pole pruners.

Abstract: A guide plate assembly for a chain saw includes a middle plate that is sandwiched and fixed between two side plates so as to define a guide groove among outer peripheries of the middle plate and the side plates. A saw chain can run within the guide groove. The middle plate has a plurality of first holes formed therethrough. Each of the side plates has a plurality of second holes formed therethrough that are aligned and communicated with the first holes in the middle plate.

Abstract: The invention pertains to a handheld implement, in particular a portable chainsaw (100), with a handle housing part (12) that contains at least one carrying handle (10), and with at least one motor housing part (16) that carries a drive unit (14) and is connected to the handle housing part (12) by means of an antivibration system that consists of at least one vibration-reducing reducing element (18). The invention proposes an antivibration system of this type, in which the above-mentioned problems are solved due to the fact that an exchange of the vibration-reducing elements can be eliminated, wherein the antivibration system is still able to fulfill the individual requirements of the operator and the machine. This is achieved due to the fact that the at least one vibration-reducing element (18) is realized such that it can be adjusted with the aid of a tool or without requiring a tool.

Abstract: A modular power tool system utilizing a modular, self-contained power drive system is disclosed. The system includes a power tool head such as a rotary cutting saw, drill or sander. The power tool head is driven by a selectively attachable, self-contained power source, to be readily secured for rotation to the power tool head by a quick-release collar. Each modular component is selectively operable with cooperating modular components.

Abstract: A modular power tool incorporates a modular drive system and modular handle set that is reversible for use with both a left hand and right hand configuration. The modular drive system and handle set of the modular power tool of this invention reduces the need for derivative circular saw designs by introducing common components.

Abstract: The invention relates to a portable handheld work apparatus including an overhead branch cutter. The work apparatus has a drive motor (4) mounted at one end (2) of a carrier tube (3). A work tool (6) is held at the other end (5) of the carrying tube (3). The work tool (6) is driven via a shaft (7) mounted in the carrying tube (3). A variable work position of the portable handheld work apparatus is made possible by subdividing the carrying tube (3) into two sections (8, 9). The sections (8, 9) can be pivoted relative to each other (pivot angle 11) with respect to their longitudinal axes (52, 51) and are rotatable relative to each other (rotation angle 12) and are connected by a ball-and-socket joint (10). A device is provided for fixing the ball-and-socket joint (10) and permits the ball-and-socket joint (10) to be fixed in the desired position.

Abstract: The present invention relates to a chain saw having a chain bar portion extending forwardly from a main body. The chain saw comprises an attaching portion to which a suspension member is to be attached, and the attaching portion is arranged in the vicinity of a corner portion, where a back surface and a bottom surface of the main body meet with each other, so that a longitudinal center axis of the chain bar portion may be at an angle of not greater than 20 degrees from a vertical line.

Abstract: The invention relates to an operating substance tank (1) which is especially for a portable handheld work apparatus (2). The tank (1) has a fill opening (3) and a suction connection (4). The tank is configured from a first housing part (6) and a second housing part (7) connected to the first housing part (6). In this way, the tank is built up in a simple manner and is operationally reliable. A valve (8) is formed in the interior of the tank (1) so that a valve member (9) is held by the first housing part (6) and the valve member (9) comes into seal-tight contact on an opening (10) of a through bore (11) on the second housing part (7). The valve (8) functions especially as an aerating valve for the tank (1).

Abstract: A guide plate assembly for a chain saw includes a middle plate that is sandwiched and fixed between two side plates so as to define a guide groove among outer peripheries of the middle plate and the side plates. A saw chain can run within the guide groove. The middle plate has a plurality of first holes formed therethrough. Each of the side plates has a plurality of second holes formed therethrough that are aligned and communicated with the first holes in the middle plate.

Abstract: In a chain saw having a sprocket (11), which is supported in rotary fashion in a housing (10) and is for a saw chain (12) guided on a guide (13), and having a chain tension device (14) for longitudinally moving the blade (13), which device has a cam (15) that moves the guide (13) and a rotating member (17) for rotating the cam (15), in order to preset a chain tension that is optimal for operation and is independent of the user, the rotary connection between the rotating member (17) and cam (15) is embodied as a detent overload clutch (18), whose detent overload force is set in accordance with the required chain tension (FIG. 2).

Abstract: An arrangement that provides a semi-automatic tension adjustment of an endless cutting chain on a guide bar of a chain saw as the links of the chain wear with use. A specially designed cam biases a tensioner pin to continuously force the guide bar away from the drive sprocket on the engine chassis to tension the chain. A knob on a clutch cover assembly attached to the engine chassis can be tightened to force two high friction surfaces together to lock the guide bar in a tensioned position, or loosed to release the guide bar to seek a proper tensioned position. An override lever on the face of the clutch cover assembly moves in a channel with peripheral nomenclature that indicates when the cutting chain should be replaced. The entire arrangement is self-contained and does not require any tools to function.

Abstract: A valve drive mechanism is provided for an internal combustion engine, especially a four-stroke engine in a power chain saw. The implement housing is spanned by a front handle, the tubular grip of which is adjacent to the cylinder head of the engine and extends from one longitudinal side of the implement to the other longitudinal side thereof. A rocker arm of a valve control is pivotably mounted on the cylinder head between the ends of the rocker arm, with the rocker arm being pivotable about a pivot axis disposed transverse to the rocker arm. Push rods of a control mechanism engage one end of the rocker arm to actuate a poppet valve, on the valve stem of which the other end of the rocker arm acts. To be able to guide the tubular grip close to the center of gravity of the implement, the longitudinal axis of the rocker arm is disposed approximately parallel to the adjacent portion of the tubular grip.

Abstract: To limit the penetration of the outer end of a chain saw into a material being cut by the saw, the chain carrying rail of the saw has a number of uniformly sized holes located at different points along its length into any selected one of which holes a limiting means can be placed, with the limiting means including two rotatable wheels located on opposite sides of the rail.

Abstract: A hedge cutting system for cutting branches and other foliage with a chainsaw. The hedge cutting system includes at least one elongated cutting bar for guiding movement of branches of a hedge toward a cutting member while cutting the hedge. The cutting bar is removably mountable on a guide bar of a chainsaw. At least one spacing member is provided for spacing the cutting bar from the guide bar. The spacing member is removably positionable between the cutting bar and the guide bar. A plurality of fastening members is provided for removably fastening the cutting bar and the spacing member together. An end of each of the fastening members is removably extendable through the guide bar such that the cutting bar and the spacing member are removably mountable on the guide bar.

Abstract: A cutting assembly (10) of a chain saw (1) includes a saw chain (2) having chain links (3, 4, 5) pivotally connected to each other as well as a guide bar (6) for guiding the saw chain (2) along a peripherally extending edge (7, 8, 9). The cutting assembly (10) includes rubbing pairs (11, 11′, 12, 12′, 13, 13′, 14) forming sliding surfaces (15, 15′, 16, 16′, 17). At least one slide surface (15, 15′, 16, 16′, 17) of a rubbing pair (11, 11′, 12, 12′, 13, 13′, 14) is configured so as to be textured for causing the lubricant film (18) to adhere.

Abstract: A guide bar (1) is provided for a portable handheld work apparatus, such as a motor-driven chain saw or overhead branch cutter, and includes an elongated, flat base body (4) having a peripherally extending guide groove for guiding a saw chain (6). In the region of the direction-changing section (14) at the free tip (13) of the guide bar (1), the saw chain (6) is laterally partially covered by guide discs (17, 18) which rotate with the idler sprocket (19). The guide discs (17, 18) include radially projecting sections (20, 20′). Corresponding radially projecting sections (20) of one guide disc (17) are arranged offset relative to the radially projecting sections (20′) of the other guide disc (18). With this constructive measure, the manipulation of the portable handheld work apparatus is improved.

Abstract: An arrangement that provides a semi-automatic tension adjustment of an endless cutting chain on a guide bar of a chain saw as the links of the chain wear with use. A specially designed cam biases a tensioner pin to continuously force the guide bar away from the drive sprocket on the engine chassis to tension the chain. A knob on a clutch cover assembly attached to the engine chassis can be tightened to force two high friction surfaces together to lock the guide bar in a tensioned position, or loosed to release the guide bar to seek a proper tensioned position. An override lever on the face of the clutch cover assembly moves in a channel with peripheral nomenclature that indicates when the cutting chain should be replaced. The entire arrangement is self-contained and does not require any tools to function.

Abstract: Cutting machines with high-speed safety systems, and actuators used in high-speed safety systems, are disclosed. The cutting machines may include a detection system adapted to detect a dangerous condition between a cutting tool and a person. A reaction system performs a specified action, such as stopping the cutting tool, upon detection of the dangerous condition. An actuator may be used to trigger the reaction system to perform the specified action.

Abstract: A manually guided implement, such as a pole pruner, is provided. Disposed at one end of a supporting tube is a drive motor that via a shaft disposed in the supporting tube drives a working tool that is held at the other end of the supporting tube. The supporting tube has a section that is associated with the working tool, and a section that is associated with the drive unit. The sections of the supporting tube are fixedly interconnected via a gearbox of a miter gear, with the angle being prescribed by the gearbox and being less than or greater than 180°.

Abstract: A portable handheld work apparatus such as a motor-driven chain saw includes a housing (6) of a drive unit (2). The following are mounted in the housing (6): an internal combustion engine (3), a carburetor (4) for fuel metering and an air filter (5) as well as a fuel tank (8). The air filter (5) is mounted ahead of the carburetor in the flow direction of the fresh air flow. A largest possible filter action is obtained with a compact configuration in that a housing (10) of the air filter (5) lies at least partially in a space between the carburetor (4) and the fuel tank (8).

Abstract: A chain saw (1) includes a guide bar (5) supporting a chain (7) and attached to a main body (3). Disposed within the body is an anchor bolt (9) for securing the guide bar to the main body. Disposed within a sprocket cover (8) is a hexagonal nut (11) screwed onto the anchor bolt. Furthermore, provided coaxially with the hexagonal nut is a cylindrical element (15) having a hexagonal cavity (13) that engages the hexagonal nut and is axially movable and rotatable about the same axis as the hexagonal nut. Also provided is a lever (17) disposed at the outer end of the cylindrical element. Provided within the sprocket cover are an adjustment pin (19) engaging the guide bar, a screw stock (20) onto which the adjustment pin is threaded and which extends in the axial direction of the guide bar, a first helical gear (21) disposed at one end of the screw stock, and a second helical gear (23) meshing with the first helical gear. Further provided is a rotating element (25) coaxial with the second helical gear.

Abstract: The invention relates to a guide bar for a motor-driven chain saw comprising an elongated planar base body which has a guide groove (8) in its outer periphery for guiding a saw chain (6). The saw chain (6) includes cutting links (14), lateral connecting links (12) and center drive links (10). The links are pivotally connected to each other with rivets (18). The drive links (10) engage with rakers (11) in the guide groove (8); whereas, the connecting links (12) are supported on guide surfaces (9) provided laterally of the guide groove (8). The guide bar (3) is fixed to the housing (2) of the motor-driven chain saw (1) at its attachment end (4) and the free tip (22) of the guide bar (3) has a direction-changing section (21) for the saw chain (6). In the region of the direction-changing section (21), guide plates (23, 43) are attached to the guide bar (3).

Abstract: The chain tension of a motorized chainsaw (10) with a housing (12), a sprocket (22) mounted thereon, and a blade (14) that is aligned with this sprocket, which blade protrudes beyond the housing (12) and guides a saw chain (16) engaged with the sprocket (22) in a revolving manner, where the blade (14) is mounted such that it can be adjusted by means of longitudinal displacement in relation to the housing (12) and/or the sprocket (22) by means of a chain tensioning device (28) and where the chain tensioning device (28) has a stop (32) that can be fixed to the blade (14) and a cam (30) that can be rotated by means of a rotational member (36, 38) can be adjusted in a more comfortable and reliable fashion by virtue of the fact that the cam (30) can be locked in a form-fitting and rotationally secure manner in relation to the housing (12) by way of the rotational member (36, 38).

Abstract: A portable power working machine has an L-shaped top handle having a top grip portion that is attached to the front portion of the top of a main housing and extends longitudinally above and parallel to the top of the main housing and a rear coupling portion that is attached to the rear portion of the main housing. A side handle has a front grip portion that is connected directly to the front end of the top grip portion of the top handle and a diagonal grip portion that extends diagonally straight as viewed in side elevation from the front grip portion toward the lower end of the rear coupling portion of the top handle. The lower end of the diagonal grip portion of the side handle is connected directly to the rear coupling portion of the top handle.

Abstract: A chainsaw guide bar includes a bar body and a nose member removably attached to the bar body by an elastic snap-in coupling, eliminating the need for separate fastening elements. The snap-in coupling includes dimples formed in tongues of the nose member, the dimples being received in holes formed in a web of the bar body. The dimpled portions of the tongues are elastically flexible in a thickness direction of the guide bar to enable the nose member to be inserted or removed.

Abstract: A portable power working machine has an L-shaped top handle having a top grip portion that extends longitudinally above and parallel to the top of a main housing and a rear coupling portion that extends along the rear portion of the main housing. A side handle has a front grip portion that is joined to and extends horizontally and laterally from the front end of the top grip portion of the top handle and a diagonal grip portion which curves out and down from the front grip portion and extends diagonally straight as viewed in side elevation from the front grip portion toward the lower end of the rear coupling portion of the top handle. A starting footstool contiguous to a lower end of the diagonal grip portion extends horizontally to the vicinity of and is joined to the lower end portion of the rear coupling portion of the top handle.

Abstract: A guide bar for a chain saw is provided having an elongate substantially planar main body portion made from a first material and having an opening extending therethrough. An elongate insert made from a second material is configured to fit closely in the opening in the main body portion. The main body portion has a holding mechanism for retaining an end portion of the insert to inhibit release of the end portion of the insert laterally of the main body portion.

Abstract: A power cutting device for cutting material in tight places. The power cutting device includes a power cutting device comprising a housing. The housing includes a first end and a second end. A first shaft is securely coupled in and extending away from the housing. A handle member is integrally coupled to a second end of the housing. A motor is positioned generally in the housing. A power supply for powering the motor is operationally coupled to the motor. A first actuating element for starting the motor is positioned in the handle member and operationally coupled to the motor. A first gear is mechanically coupled to the motor. A blade supporting member for supporting a cutting a member is positioned generally in the housing and removably coupled to the first shaft. A cutting member for cutting a variety of materials is movably coupled to the blade supporting member and the first gear.