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| Number | Title | Issue Date |
| 8136256 | Motor chain saw A motor chain saw has a housing, a motor arranged in the housing, a drive pinion driven by the motor, and a guide bar connected to the housing. A saw chain is driven in circulation about the guide bar by the drive pinion. A lateral panel is arranged between the hous... | 03/20/2012 |
| 7946040 | Chainsaw A chainsaw includes: a body case 20 in which an engine for driving the chainsaw is accommodated; and a top handle 41 provided on an upper side of the body case 20. A fuel tank 7 for storing fuel of the engine is integrally provided to the... | 05/24/2011 |
| 7818886 | Anti-pinch chainsaw bar assembly An anti-pinch chainsaw bar assembly for enabling the extraction of chainsaw bars when bound or pinched during cutting includes rolling bearing members integrated into outer surfaces of the bar. The bearings are arranged in groups of at least two bearings in rolling ... | 10/26/2010 |
| 7640669 | Assisted braking in chain saws A chain saw with a centrifugal clutch in a housing made at least partially of, or which is mounted magnetized material which aides clutch operation. An elongated support extending outward from inside the housing preferably includes at least one lateral or longitudin... | 01/05/2010 |
| 7412769 | Chain saw chain tensioning and braking system Disclosed is a chain saw which includes chain saw chain tensioning and braking systems. Tensioning and braking are effected by the presence and control of longitudinal slits in an elongated support which provides a continuous chain channel guide in its outer circumf... | 08/19/2008 |
| 7407018 | Power working machine A hedge trimmer is provided which performs a trimming operation on a hedge. The hedge trimmer includes a machine body, a handle rotatably attached to the machine body, a throttle lever provided in the handle, a locking mechanism for preventing the handle from rotati... | 08/05/2008 |
| 7363886 | Power unit To achieve improved cooling in a power unit, a first fan is coupled with an end of a crankshaft of an internal combustion engine to cool at least a cylinder of the internal combustion engine, and a second fan is coupled with another end of the crankshaft to cool at ... | 04/29/2008 |
| 7350301 | Tension-adjusting device for a chain in chain saw A tension-adjusting device for a chain in a chain saw comprises an adjusting assembly, a fixing base, a brake disk, a position piece and a fixing piece, wherein the adjusting assembly, the brake disk, the position piece and the fixing piece are locked together on th... | 04/01/2008 |
| 7331111 | Chainsaw throttle and brake mechanisms 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 cha... | 02/19/2008 |
| 7331110 | Device for a pole saw This invention relates to a device for a pole saw for pruning trees or bushes. The pole saw comprises an elongated stiff tube extending from a drive unit to a remote chain saw head (12) and incorporates a drive shaft (14) connected to an input shaft ( | 02/19/2008 |
| 7322114 | Saw chain tensioning mechanism 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 mo... | 01/29/2008 |
| 7293330 | Tubular handle for a manually guided implement A tubular handle for a manually guided implement, especially a power chain saw or the like, is provided. The handle has an essentially circular cross-section and at least one mounting portion for fixing the handle to the implement. In the area of the mounting portio... | 11/13/2007 |
| 7293491 | Low vibration saw chain A saw chain is provided that has a plurality of cutter links coupled to an opposing tie strap, where the cutter link has a portion that protrudes past the tie strap to enable pivotal movement of the cutter link toward a central longitudinal axis of a guide bar. ... | 11/13/2007 |
| 7293629 | Exhaust apparatus for small-sized engine An exhaust apparatus has an exhaust pipe that receives exhaust gas from an engine and a muffler attached to the exhaust pipe. The muffler has an exhaust portion that discharges exhaust gas received by the exhaust pipe. A tubular member is attached to the exhaust por... | 11/13/2007 |
| 7269904 | Portable handheld work apparatus A portable handheld work apparatus such as a motor-driven chain saw (1) includes a housing (2) wherein an internal combustion engine (10) and a carburetor (11) are mounted. A throttle lever (6) is provided which is pivotally journa... | 09/18/2007 |
| 7228935 | Attachment pin for an exhaust-gas muffler The invention relates to an attachment pin (1) for fixing an exhaust-gas muffler (2) in an apparatus part (4) of a portable handheld work apparatus (5) driven by an internal combustion engine. The exhaust-gas muffler (2) includes e... | 06/12/2007 |
| 7219433 | Adjustable antivibration system, in particular for a hand-held work machine 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 u... | 05/22/2007 |
| 7220174 | Drywall sander The present invention provides an adjustable drywall sander capable of imparting more than one type of motion. In an exemplary embodiment, the sander includes a power unit with a motor and a sanding assembly coupled to the power unit. A telescopic support arm assemb... | 05/22/2007 |
| 7204025 | Hand-operated tool with handle The invention relates to a hand-operated tool with handle (1) with a handle section (2) on the user side and with a foot section (3) arranged on the bottom side of the handle section (2) and with a detachable one-piece upper handle shell ... | 04/17/2007 |
| 7200941 | Chainsaw throttle and brake mechanisms 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 cha... | 04/10/2007 |
| 7185437 | Chainsaw bar tensioning apparatus 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 ... | 03/06/2007 |
| 7178248 | Power tool A power tool (10) comprises a main body (12) having a motor driven tool (24) extending from a first front end of the main body, and has a first handle (18) integrally formed on the main body to be remote from this front end. A second supp... | 02/20/2007 |
| 7168132 | Portable handheld work apparatus having thumb supports The invention relates to a portable handheld work apparatus including a chain saw, a vacuum/blower apparatus or the like. The work apparatus has a handle (2) for carrying and guiding the work apparatus (1). Thumb supports (4, 5) are provided on ... | 01/30/2007 |
| 7155832 | Chain saw with tool-less chain tensioner and guide bar lock 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... | 01/02/2007 |
| 7152328 | Electric pole saw 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 t... | 12/26/2006 |
| 7131206 | Jig saw with laser alignment system A jig saw for more precise movement during cutting with a laser alignment system for projecting a marker onto a workpiece to align with a target line to be cut. The laser alignment system comprises a housing, a laser generator within the housing, an internal battery... | 11/07/2006 |
| 7127971 | Hand tool safety device A combination handle and safety device configured to be attached to a hand tool to enable the hand tool to be safely stored upon a timber includes a handle, configured to be grasped by a user of the hand tool. Each of a pair of hanger prongs extends outwardly from a... | 10/31/2006 |
| 7124840 | Engine breaker An engine breaker includes a vertically extending cylindrical main body (1), a work member (2) supported by a lower portion of the main body for up and down movement, an engine (5) mounted to an upper portion of the main body and having an outpu... | 10/24/2006 |
| 7111715 | Centrifugal type clutch brake device Disclosed is a centrifugal type clutch brake device in which a ring-like drive disc is caused to move vertically in synchronism with the engagement/disengagement of a centrifugal clutch to thereby engage/disengage the brake, thus attaining a simplification in struct... | 09/26/2006 |
| 7107689 | Bar knob with integrated lock 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 a... | 09/19/2006 |
| 7101274 | Method and circuit for inserting a picture into a video picture The present invention is directed to a power finishing tool having a variable position handle. In aspects of the present invention, a power finishing tool includes a motor housing for containing a motor configured to drive a working element. A variable position hand... | 09/05/2006 |
| 7093365 | Heavy duty drill shear attachment Drill shear attachment clamps for a shear attachment with shear blades connected to a chuck of a portable drill includes left and right rails extending from and secured to the left housing side of the shear attachment along the drill body to a point beyond the rear ... | 08/22/2006 |
| 7089670 | Portable motor chain saw 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 o... | 08/15/2006 |
| 7055250 | Machine tool for cutting plate and sandwich panels 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) ... | 06/06/2006 |
| 6976299 | Stump treatment guide bar 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 diffe... | 12/20/2005 |
| 6973726 | Manually operated tool 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 th... | 12/13/2005 |
| 6964101 | Lightweight guide bar for chainsaw 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 adhe... | 11/15/2005 |
| 6944957 | Chain saw with a tensioning arrangement 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... | 09/20/2005 |
| 6944958 | Chain saw chain tensioning and braking system 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. ... | 09/20/2005 |
| 6904687 | Extended reach tree maintenance apparatus The present invention is an extended reach tree maintenance apparatus. The invention is comprised of a lightweight electric chain saw, at least two hollow and stackable extensions poles, a bracket, several fasteners, and a wireless ON/OFF switch. The bracket is atta... | 06/14/2005 |
