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An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 8176643 | Brake system of chain saw and chain saw According to a chain saw braking system, engagement between a front end portion of a belt and a main body by an engagement member is released at the time of application of an impact. When a front end portion is pulled by the spring force of a compression coil spring... | 05/15/2012 |
| 8020304 | Power transmission assembly for tool mounted on an elongate pole A powered apparatus having an elongate pole, a drive at a proximal region of the elongate pole and operable to rotate a first component on the drive, a tool at a distal region of the elongate pole with a second component that is rotatable to operate the tool, and a ... | 09/20/2011 |
| 7631430 | Guide bar for a chain saw A guide bar for a chain saw includes a first guide plate, a second guide plate and a spacer plate which is sandwiched between the first and second guide plates. Each of the first and second guide plates has a plurality of protrusions extending from an outer side the... | 12/15/2009 |
| 7424879 | Portable handheld work apparatus A portable handheld work apparatus includes a drive motor configured as an internal combustion engine (1). The work apparatus includes an air filter case (2) arranged in the intake channel of the engine (1). The work apparatus further includes a... | 09/16/2008 |
| 7412959 | Manually guided implement A manually guided implement having a housing that accommodates an internal combustion engine for driving a tool. At least an upper handle extends in a longitudinal direction of the implement on an upper side thereof. A first antivibration element connects the handle... | 08/19/2008 |
| 7412961 | Intake device To improve an intake device (100) for a handheld tool implemented having an air cleaner, particularly for a chainsaw, a cuffing-off grinder, or the like, which comprises an internal combustion engine (25) and a drive unit (20) for the attachment... | 08/19/2008 |
| 7401660 | Latch mechanism for pivoting handle assembly of a power tool A latch mechanism for a power tool, such as a hedge trimmer, having a housing accommodating a motor and a handle assembly adapted to pivot relative to the housing in a plurality of positions. The latch mechanism includes a lever carrying a first and second retaining... | 07/22/2008 |
| 7367409 | Latch mechanism for pivoting handle assembly of a power tool A latch mechanism for a power tool is disclosed, in which the power tool has a housing (3), a motor provided in the housing, an output shaft adapted to be caused by said motor to actuate a working member, and a handle assembly (2) adapted to pivot rela... | 05/06/2008 |
| 7357380 | Anti-vibration element In order to reduce the formation of inherent vibrations in the coil spring in an anti-vibration element, in particular for a manually operated tool such as a chainsaw, a parting-off grinder or similar device and having a coil spring, an additional mass is positioned... | 04/15/2008 |
| 7357056 | Cutting tool safety system A woodworking machine is disclosed. The machine includes a cutting tool and a motor adapted to drive the cutting tool. The machine further includes a detection system to detect a dangerous condition between the cutting tool and a person, such as a person coming into... | 04/15/2008 |
| 7334613 | Router base securing mechanism The present invention is directed to a mechanism and method for providing above the table securing/unsecuring of a router motor housing. The mechanism of the present invention employs a mechanical connection included on a pivot member to couple with a wrench device ... | 02/26/2008 |
| 7334614 | Depth adjustment mechanism A depth adjustment mechanism, disposed on a router, is enabled using a worm drive that includes a shaft member engaging with a rack member. The shaft member couples with a sleeve disposed on a base of the router. The rack member is coupled with a motor casing of the... | 02/26/2008 |
| 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 |
| 7316528 | Ergonomic router assembly An ergonomically designed router assembly includes a base assembly coupled with a motor casing including a grip assembly which provides an overall narrower profile to the router assembly. The grip assembly may relieves stress on the muscles and allows the operator t... | 01/08/2008 |
| 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 |
| 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 |
| 7293632 | Brake-equipped retracting mechanism for retractable member In a brake-equipped retracting mechanism, rotational force of a motor is used to open a liquid crystal display device from a retracted position to an open position, a power spring is wound up in conjunction with this opening operation, and elastic restoring force th... | 11/13/2007 |
| 7290641 | Brake device for power tool A brake device for a power tool has a brake assembly, a bearing portion, a pinion and a gearbox. The brake assembly includes a brake base, a cover, a first throttle cable, a second throttle cable, a brake-activating block, a brake-guiding pillar, a brake band and a ... | 11/06/2007 |
| 7287330 | Chain saw automatic tensioner A chain saw automatic tensioner preferably includes a base plate, a chain bar, a tensioning cylinder, a sliding block and a pusher block. The base plate includes a sliding slot that is sized to slidably receive the sliding block. The chain bar includes a substantial... | 10/30/2007 |
| 7278395 | Manually operated implement driven by an internal combustion engine A manually guided implement driven by an internal combustion engine having a carburetor that is actuated by a throttle lever arrangement, which includes a throttle lever that is mounted in the implement so as to be pivotable about a pivot axis, and also includes a t... | 10/09/2007 |
| 7275322 | Pivoting handle assembly for power tool There is disclosed a power tool comprising a housing (3), a motor provided in the housing and having a rotary output shaft, a reciprocating output shaft adapted to be caused by the motor to execute reciprocating motion to actuate a blade assembly, and a handl... | 10/02/2007 |
| 7274866 | Power tool and method for controlling a power tool A power tool is disclosed comprising a controller for controlling at least one operating parameter, a motor for driving a tool, at least three switching elements which are coupled to the controller, and a speed sensor for monitoring the speed of the motor to generat... | 09/25/2007 |
| 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 |
| 7258205 | Blade stop components and roller bearing clutch design for a power tool A power tool includes a braking system that minimizes a stopping time for a cutting blade of the power tool. The braking system includes a roller bearing clutch mechanism combined with a positive stop pin. The stop pin is provided at an end portion of a cable assemb... | 08/21/2007 |
| 7245050 | Internal combustion engine A journal of a crankshaft is rotatably supported by a journal-supporting portion of a cylinder block and a bearing cap. An arcuate oil guide groove is defined in a side face of the bearing cap, and coils which are portions of a stator of a generator or motor are fit... | 07/17/2007 |
| 7234581 | Centrifugal clutch, and method of making same A centrifugal clutch includes vibration isolation ring. The vibration isolation ring reduces or prevents the occurrence of squeaking noises due to the vibration of the clutch outer cover. The vibration isolation ring can be made with a large wall thickness, thereby ... | 06/26/2007 |
| 7225544 | Ice axe for mountaineering with adjustable grip The ice axe for mountaineering includes a head, a shaft, and an anatomical grip having one free end and an end secured to the shaft. The grip defines a handling zone of the ice axe and includes an adjusting member for adjusting the length of the handling zone. The a... | 06/05/2007 |
| 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 |
| 7219430 | Oscillating razors A wet shave razor is provided that includes (a) a handle having a hollow head; (b) a cartridge having a body, the body having a surface for engaging the skin of the user and having at least one blade mounted therein; (c) an interconnect member, joined to the cartrid... | 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 |
| 7204744 | Hand-operated machine-tool comprising a vibration-damping rotary handle A handheld power tool, in particular a handheld right-angle grinder (10), has an electric motor drive for a motor housing (11) that accommodates a tool and also has a handle (15), which is retained on the motor housing (11) by means of a ... | 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 |
| 7191751 | Handle for a pull-rope starter of a motor-driven chain saw The invention entails a handle for a pull-rope starter of a drive motor, especially of a chain saw. The invention includes at least one handle section, at least one fastening section for a starter rope, and a damping for smoothing out force peaks produced in the han... | 03/20/2007 |
| 7185640 | Integrated fuel tank and vapor containment system A fuel tank for an engine that includes an air cleaner assembly and an air-fuel mixing device. The fuel tank includes a first tank portion and a second tank portion connected to the first tank portion to define a fuel chamber. A canister is at least partially formed... | 03/06/2007 |
| 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 |
| 7182059 | Oil pump mechanism for lubricating saw chain An oil pump mechanism is incorporated in a chain saw having a centrifugal clutch and a saw chain adapted to be driven through the centrifugal clutch and activated in synchronization with the centrifugal clutch to supply a lubricating oil to the saw chain. The mechan... | 02/27/2007 |
| 7171879 | Discrete proximity detection system A machine is described having at least one dangerous portion. The machine also includes a safety system to detect dangerous proximity between a person and the dangerous portion and perform a predetermined action to limit or prevent injury to the person from the dang... | 02/06/2007 |
| 7171942 | Protective engine speed control for a centrifugal clutch A device that controls the engine speed of an internal combustion engine of a hand-held power tool has a protective control unit. The engine has an ignition control unit for controlling the ignition timing relative to a crank angle of a crankshaft based on the crank... | 02/06/2007 |
| 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 |
