With Motor Patents (Class 30/216)
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Patent number: 8156656Abstract: A hedgetrimmer having a housing, a motor located within the housing for driving a reciprocating blade for cutting vegetation. A front handle located at a front end of the housing and a rear handle located at a rear end of the housing. The rear handle having a trigger to actuate the motor, the rear handle being rotatable around a longitudinal axis of the housing. The rear handle is lockable at one of several positions so that a user can grip the two handles in the most comfortable position for the desired cutting operation.Type: GrantFiled: May 7, 2009Date of Patent: April 17, 2012Assignee: Black & Decker Inc.Inventors: Clare Tate, Matt Tollini
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Patent number: 8146254Abstract: A hair clipper (1) comprises a replaceable blade block (3) having a comb-shaped stationary blade (5) and a comb-shaped moving blade (6) which is reciprocally movable in a widthwise direction of the hair clipper (1), a main body (2) having a motor (8) and a driving member (14) to transfer and to transmit a driving force of the motor (8) to reciprocal motion of the moving blade (6), and to which the blade block (3) is detachably attached, and a pressing mechanism (4) to press the moving blade (6) toward the stationary blade (5). The pressing mechanism (4) is provided on the main body (2) and has at least one contact portion (4b) which reciprocally moves in synchronism with a reciprocal motion of the moving blade (6).Type: GrantFiled: June 13, 2007Date of Patent: April 3, 2012Assignee: Panasonic Electric Works Co., Ltd.Inventors: Kazuhiro Morisugi, Seiko Yabuuchi, Toshio Ikuta, Hitoshi Ogawa
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Patent number: 8136257Abstract: A cutting tool includes a working member power coupled to a power drive arrangement held by a housing. The housing includes a front housing portion from which the working member protrudes and a rear housing portion. A first handle includes a first hand-grip portion adapted for a user to hold the power tool at an operative level above the ground level, a second handle adapted for a user to generate a turning moment about the first handle so as to vary inclination of the working member relative to the ground level. The second handle includes a movable hand-grip portion which is attached to the rear housing portion. The rear housing portion is pivotally connected to the front housing portion, and the movable hand-grip portion of the second handle is arranged to pivotally move the rear housing portion relative to the front housing portion.Type: GrantFiled: September 5, 2007Date of Patent: March 20, 2012Assignee: Senson Investments LimitedInventor: Tak Chiu Alfred Lau
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Patent number: 8132540Abstract: Disclosed is a palm-held device having a cutting assembly which exposes blades on two edges simultaneously to enable a user to cut a target's hair or fur with either edge by moving the device in the desired direction.Type: GrantFiled: August 24, 2009Date of Patent: March 13, 2012Inventor: Timothy Lee Strebeigh
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Publication number: 20120055032Abstract: A hedge trimmer having improved operational balance includes a housing with a front handle and a main handle, a cutting assembly, a motor assembly, a transmission assembly and a switch device arranged on the housing for controlling the start of the motor assembly. The cutting assembly is connected to the housing, the motor assembly and the transmission assembly are arranged in the housing, and the transmission assembly for transmitting the rotation of the motor assembly to the cutting assembly is located between the motor assembly and the cutting assembly. The main handle is located between the motor assembly and the transmission assembly and a main part of the main handle is located above a motor output shaft in the motor assembly.Type: ApplicationFiled: August 19, 2011Publication date: March 8, 2012Applicant: CHERVON (HK) LIMITEDInventors: Andrew Roise, Keith Park
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Publication number: 20120036722Abstract: In a hand-held power tool with a drive motor and a clutch connected to the drive motor and having an output part, the drive pinion is fixedly connected to the output part of the clutch so as to be driven by the drive motor for driving a tool. The drive pinion has a first individual part and a second individual part that are fixedly connected to each other. The first individual part has a toothing and the second individual part is connected to the output part of the clutch.Type: ApplicationFiled: July 26, 2011Publication date: February 16, 2012Applicant: ANDREAS STIHL AG & CO. KGInventors: Markus Hittmann, Ralf Schenk, Achim Rethaber
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Patent number: 8079149Abstract: A hand-held hair cutting appliance has a housing, a first cutting blade, and a second cutting blade. The first cutting blade is capable of reciprocating movement relative to the housing. A drive assembly is operatively connected to the first cutting blade for drivingly reciprocating the first cutting blade relative to the housing such that the first cutting blade is moveable in a side to side direction relative to the housing and the second cutting blade. A counter weight is adapted for reciprocating movement relative to the housing in response to reciprocating movement of the first cutting blade. The counter weight has at least one of a mass and a location relative to the first cutting blade to thereby at least partially counter-balance the reciprocating movement of the first cutting blade.Type: GrantFiled: May 27, 2010Date of Patent: December 20, 2011Assignee: Rovcal, Inc.Inventor: Thomas Richard Bednar
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Patent number: 8051571Abstract: A hair clipper includes a housing and a blade assembly coupled to the housing. The blade assembly is coupled to the housing at a cutting end and is movable between an operating position and an open position. The clipper also includes a release assembly including a release mechanism. The release assembly is switchable between a hold state and a release state. In the hold state, the release assembly holds the blade assembly in the operating position. In the release state, upon application of a force on the release mechanism, the release assembly releases the blade assembly to permit the blade assembly to move to the open position in the absence of an additional force.Type: GrantFiled: August 30, 2005Date of Patent: November 8, 2011Assignee: Andis CompanyInventors: Matthew L. Andis, Richard J. Tringali, Andrew A. Skuhra
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Patent number: 8028422Abstract: To allow trimming body hair by pulling as well as pushing with the same hair trimmer device (1), its comb unit (6) is positioned over the trimming head (16) in at least two different positions (8, 9), one (8) pulling and one pushing position (9). In particular, in the different comb positions (8, 9), the tips (20) of the comb unit's fins (13) point in the direction of the respective movement. Preferably, the comb unit (6) is removably attached. In a preferred embodiment, the trimming head (16) includes shaving means (18) besides trimming means (19).Type: GrantFiled: March 17, 2006Date of Patent: October 4, 2011Assignee: Koninklijke Philips Electronics N.V.Inventors: Christian Mikula, Gerald Kauer, Harald Duller
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Patent number: 8028423Abstract: A reciprocating-type cutting blade device (1) has first and second driving bodies (15, 16) driven reciprocatingly in opposite directions. First and second cutting blade bodies (13, 14) are driven reciprocatingly by detachably engaging the first and second driving bodies (15, 16). Two detachable guide plates (11, 12) slidably hold these driving and cutting blade bodies. A first boundary (Q1) is formed between engaging portions (31, 33) of the first cutting blade body (13) and the first driving body (15), and a second boundary (Q2) is formed between engaging portions (32, 34) of the second cutting blade body (14) and the second driving body (16). The boundaries intersect only at points in a planar view, and the engaging portions (31-34) of the cutting blade bodies (13, 14) and the driving bodies (15, 16) maintain this state of intersection over a whole stroke of reciprocating motion.Type: GrantFiled: May 8, 2009Date of Patent: October 4, 2011Assignee: Genpei Hamono Co., Ltd.Inventors: Katsumi Matsuo, Yoshinobu Matsuo
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Patent number: 7992308Abstract: The present invention is an extended reach power tool apparatus. The apparatus includes a powerhead and a yoke. The powerhead includes a motor which is enclosed by a casing. The yoke includes a base portion configured for being secured to a pole. The yoke also includes a boss configured for being pivotally secured to the powerhead. Further, the powerhead may be rotatable about the boss. The boss may form an aperture configured for receiving wiring, such that the wiring may be routed from a source, through the pole, and to the powerhead.Type: GrantFiled: March 11, 2005Date of Patent: August 9, 2011Assignee: MTD Products IncInventor: David B. Fisher
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Publication number: 20110179651Abstract: The invention relates to an eccentric gear arrangement of a motor-driven, hand-guided hedge trimmer (1). The eccentric gear arrangement includes two shearing blades (2, 3) driven in mutually opposite directions over a displacement path (a). Each shearing blade has a connecting link (4, 5) as well as an eccentric wheel (6) having a drive wheel (7) and two eccentrics (8, 9). The eccentric wheel (6) rotates about a rotational axis (10). The two connecting links (4, 5) lie directly above one another. The two eccentrics (8, 9) are arranged on the same side of the drive wheel (7) and engage each in one of the two connecting links (4, 5). The two shearing blades (2, 3) have contact pressure surfaces (11, 12) in the region of their two connecting links (4, 5) and are offset with respect to each other in such a manner that they are exposed at least over a portion of the displacement path (a). Two downholders (13, 14) are provided which act each on one of the assigned contact pressure surfaces (11, 12).Type: ApplicationFiled: January 28, 2011Publication date: July 28, 2011Inventors: Markus Hittmann, Ralf Schenk, Reinhard Friedrich, Gunter Mayer
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Patent number: 7921566Abstract: A hair trimmer includes a main body, a cutter block and a comb attachment. The cutter block has a stationary blade and a movable blade, both of which are comb-shaped and are slidably in contact with each other. In addition, the cutter block is protrudingly installed at one end of the main body. The comb attachment has a plurality of comb tooth-shaped sections and covers the cutter block. The comb tooth-shaped sections are provided with cut-off hair deflectors to prevent hairs cut by the cutter block from outwardly scattering away from the comb attachment. Furthermore, cut-off hair deflectors located between two neighboring comb tooth-shaped sections are disposed at relatively inner and outer positions.Type: GrantFiled: December 21, 2004Date of Patent: April 12, 2011Assignee: Panasonic Electric Works Co., Ltd.Inventors: Takashi Yamaguchi, Hitoshi Ogawa
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Publication number: 20110010942Abstract: A nose hair trimmer with dual cutting edges which comprises a stationary blade with a plurality of teeth disposed on two opposite longitudinal sides thereof; a movable blade with a plurality of teeth disposed on two opposite longitudinal sides thereof, and the movable blade is driven by a driving unit to move in a linear reciprocating manner against the stationary blade so that the teeth on one side of the stationary blade and the teeth on one side of the movable blade cooperate with each other to define a first cutting edge, and the teeth on the other side of the stationary blade and the teeth on the other side of the movable blade cooperate with each other to define a second cutting edge; and a casing having a head portion in shape and size adapted to be inserted into a human nose, and the head portion is provided with two longitudinal openings disposed opposite to each other for exposing the first cutting edge and the second cutting edge respectively, so that the first cutting edge and the second cutting eType: ApplicationFiled: March 17, 2010Publication date: January 20, 2011Inventor: Tung Yan LAU
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Patent number: 7866048Abstract: A rotatable rear hand grip (3) is releasably locked at a desired rotational position by operation of a control lever member (4). The power hand tool includes: a tool body (1) including an engine for generating driving power used for performing work; a front hand grip (2) fixed to the tool body; a rear hand grip including: a control lever member coupled to the engine for controlling an output of the engine; a supporting mechanism for supporting the rear hand grip rotationally about an axis (AX) between the tool body and the rear hand grip; a locking mechanism for locking the rear hand grip at one rotational position about the axis in response to the control lever member; and a controlling mechanism (4d) for allowing the control lever member to control the output of the engine after the locking mechanism locks the rear hand grip.Type: GrantFiled: May 16, 2006Date of Patent: January 11, 2011Assignee: Yamabiko CorporationInventors: Hisao Kodama, Syuuji Satou
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Patent number: 7814665Abstract: An actuation mechanism for actuating a power tool that includes a cable assembly comprising at least one outer sheath (41) arranged coaxially around an inner cable (40), wherein the inner cable (40) slides relative to the outer sheath (41). The actuation mechanism also comprises an electrical contact (42) connected to the cable assembly and a plurality of switch members (51, 54) connected to the cable assembly. The coaxial cable assembly provides the advantage that a power tool with a two handed dual-switching mechanism can be actuated without the need for two independent electrical contacts wired in series, thereby reducing the amount of electrical wiring and components needed. Additionally, an electrical contact is provided with a connecting structure connected to the handle assembly and to the housing and adapted to enable actuation of the tool in a plurality of orientations of the handle assembly relative to the housing.Type: GrantFiled: August 4, 2004Date of Patent: October 19, 2010Assignee: Black & Decker, Inc.Inventor: Kevin Stones
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Patent number: 7788811Abstract: A trimming machine according to the present invention has a pair of blades each of which has a plurality of cutting edges along a longitudinal direction of the blades and which are reciprocated along the longitudinal direction relative to each other by a rotary power unit. The trimming machine further has a substantially cylindrical eccentric cam eccentrically rotated by the rotary power unit, and a connecting rod having an annular larger end part slidably fitted around the eccentric cam, a smaller end part pivotally attached to one of the blades, and a connecting rod axis passing through a central axis of the smaller end part and a central axis of the larger end part. The larger end part has a bearing portion for bearing load from the blade, and the bearing portion is located on the connecting rod axis when the connecting rod axis is aligned with the longitudinal direction, and is deformable along the connecting rod axis when the bearing portion is subjected to a load.Type: GrantFiled: December 3, 2007Date of Patent: September 7, 2010Assignee: Yamabiko CorporationInventors: Kazuya Hanada, Naoyuki Kirihara, Kazuteru Fukuda
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Publication number: 20100218385Abstract: A hand-guided electric device has an electric motor for driving a tool. The electric motor has a motor housing with inlet and outlet for cooling air. A blower wheel is driven by the electric motor and cooling air is conveyed into the motor housing with the blower wheel through the inlet and blown out from the motor housing through the outlet. The device housing has a cooling air inlet chamber and a cooling air outlet chamber. The cooling air enters the inlet chamber through a cooling air inlet port in an exterior housing wall of the device housing and exits from the outlet chamber through a cooling air outlet port in the exterior housing wall. The cooling air inlet and outlet chambers are separated from one another substantially air-tightly by an inner housing wall so that motor housing is the only flow connection between inlet and outlet chambers.Type: ApplicationFiled: February 22, 2010Publication date: September 2, 2010Applicant: Andreas Stihl AG & Co. KGInventors: Harald Mang, Matthias Müller, Volker Reber
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Patent number: 7761998Abstract: A razor and trimmer combination assembly includes an elongated handle, a razor blade, a trimmer and a motor. The razor blade is disposed at or adjacent a first end of the handle. The trimmer mounts on the handle and includes a moving blade. The motor drives the moving blade.Type: GrantFiled: March 9, 2009Date of Patent: July 27, 2010Assignee: Ridgewood Industries LLCInventors: Lawrence A. Blaustein, Douglas A. Gall, John William Nottingham, John Osher
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Patent number: 7762001Abstract: A hair clipper includes three blade blocks each including comb-like blades mutually overlapped for making sliding contact with each other, each blade block having a skin contact surface parallel to a projecting direction of the comb-like blades; and a main body including a drive unit for reciprocating one of the comb-like blades. The blade blocks include first, second and third blade blocks. The second blade block has a skin surface contact angle between a longitudinal axis of the main body and the skin contact surface acute and greater than that of the first blade block. The third blade block has a skin surface contact angle same as that of the second blade block. The third blade block has a cutting width smaller than that of the first and second blade blocks. The main body includes an attachment unit for detachably attaching one of the blade blocks to the main body.Type: GrantFiled: December 21, 2007Date of Patent: July 27, 2010Assignee: Panasonic Electric Works Co., Ltd.Inventors: Kazuhiro Morisugi, Toshio Ikuta
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Patent number: 7757404Abstract: A personal trimming system includes a main body having a motor and a part of a driving unit for converting a rotation of the motor into a reciprocating motion; and a head portion having a driven member moving in a reciprocating motion. The head portion is pivotably supported with respect to the main body, and a gap is provided between the main body and the head portion.Type: GrantFiled: July 29, 2009Date of Patent: July 20, 2010Assignee: Panasonic Electric Works Co., Ltd.Inventors: Kazuyuki Ouchi, Hidekazu Sueyoshi, Toshihiro Takeuchi, Kenichi Muraki, Keiko Funatsu
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Patent number: 7757405Abstract: A trimmer having a first cutting blade and a second cutting blade. A first drive gear assembly cooperates with the cutting blades so that as the first drive gear assembly rotates around a first axis, the cutting blades are caused to reciprocatingly move in first and second paths to produce a cutting action. A second drive gear assembly has a second drive gear that has teeth in mesh with teeth on the first drive gear assembly. The second drive gear is rotatable around a second axis to cause the first drive gear assembly to be rotated in the first rotational direction. A powered drive assembly rotates the second drive gear around a second axis in the one rotational direction. The teeth on the first drive gear assembly are defined by a first bevel gear. The second gear is a bevel gear in mesh with the first bevel gear.Type: GrantFiled: September 19, 2006Date of Patent: July 20, 2010Assignee: Echo, IncorporatedInventors: Brent Peterson, David Ni
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Patent number: 7748123Abstract: A hand-held hair cutting appliance has a housing, a first cutting blade, and a second cutting blade. The first cutting blade is capable of reciprocating movement relative to the housing. A drive assembly is operatively connected to the first cutting blade for drivingly reciprocating the first cutting blade relative to the housing. A counter weight is adapted for reciprocating movement relative to the housing in response to reciprocating movement of the first cutting blade. The counter weight has at least one of a mass and a location relative to the first cutting blade to thereby at least partially counter-balance the reciprocating movement of the first cutting blade.Type: GrantFiled: August 31, 2006Date of Patent: July 6, 2010Assignee: Rovcal, Inc.Inventor: Thomas Richard Bednar
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Publication number: 20100154226Abstract: A hedge trimmer having a rear handle, a tubular handle and a blade arrangement with at least one cutter bar disposed in a cutter bar plane. An internal combustion engine drives the cutter bars in a reciprocating manner, and has a combustion chamber and a crankshaft mounted in a crankcase so as to be rotatable about an axis of rotation. The combustion chamber faces the rear handle, and the crankcase faces the blade arrangement. The blade arrangement has a longitudinal central axis, and the hedge trimmer has a longitudinal plane that is disposed parallel to the axis of rotation of the crankshaft and transverse to the cutter bar plane. The longitudinal central axis of the blade arrangement lies in the longitudinal plane of the hedge trimmer.Type: ApplicationFiled: December 17, 2009Publication date: June 24, 2010Applicant: Andreas Stihl AG & Co. KGInventors: Georg Heinzelmann, Markus Hittmann, Antonio Fattorusso, Marcus Stein
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Publication number: 20100154227Abstract: A hedge trimmer having a drive motor, a gear mechanism, and a blade arrangement with at least one cutter bar, which is driven in a reciprocating manner by the drive motor via the gear mechanism in a longitudinal direction. The blade arrangement includes a guide mechanism that extends over at least a part of the length of the blade arrangement. The guide mechanism is embodied as a molded part that includes a generally flat fastening portion and a profiled guide portion. The cutter bar is longitudinally movably held on the guide portion.Type: ApplicationFiled: December 17, 2009Publication date: June 24, 2010Applicant: Andreas Stihl AG & Co. KGInventor: Georg Heinzelmann
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Publication number: 20100146796Abstract: A power tool has a drive motor and first and second tool members driven reciprocatingly by the drive motor in opposite directions, respectively. The first tool member is driven by a first connecting rod and the first connecting rod is connected to the first tool member by a first pivot joint arranged on the first connecting rod. The second tool member is driven by a second connecting rod and the second connecting rod is connected to the second tool member by a second pivot joint arranged on the second connecting rod. The first pivot joint is arranged on an end of the first connecting rod which end is facing the tool members. The second pivot joint is arranged on an end of the second connecting rod which end is facing away from the tool members.Type: ApplicationFiled: December 11, 2009Publication date: June 17, 2010Applicant: ANDREAS STIHL AG & CO. KGInventor: Ludwig Geromiller
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Patent number: 7698822Abstract: A personal care apparatus having a hair trimmer, a main part and a head part. The head part being connected to the main part in a region of the main part that is adjacent to the head part and is pivotable relative to the main part. A personal care tool is provided on the head part and comprising a toothed cutting mechanism that has at least one drivable toothed blade and a spring of a U-shaped configuration has a cross-member connected to the head part and two sides co-operating with at least one position extension connected to the main part in the region of each of its two sides. The spring acts between the head part and the main part, and the head part is pivotable by the spring in synchronization with varying displacing forces that act on the head part in the course of a personal care process.Type: GrantFiled: August 29, 2003Date of Patent: April 20, 2010Assignee: Koninklijke Philips Electronics N.V.Inventors: Johannes Kostner, Gerald Kauer, Michael Janny
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Publication number: 20100058596Abstract: The present invention is related to a driving structure of a low noise pneumatic clipper, and an object of the present invention is to use a compressed air in order for driving a cutting comb. The present invention includes a main body, a cutting comb installed on the front side of the main body, and a driving means installed in the inside of the main body to operate the cutting comb. In the present invention, in the inside of the main body, a driving compartment is formed on the center part of the main body to separate the cutting comb from the driving means and a ventilation chamber is formed to surround the driving compartment and to form an inner wall of the main body. the driving compartment and the ventilation chamber are connected by a passing through hole which is position on the upper side of the passing through hole and is connected to an exhaust pipe.Type: ApplicationFiled: December 6, 2007Publication date: March 11, 2010Inventor: Gook Hyun Shim
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Publication number: 20100037469Abstract: The seaweed trimmer is constructed of three main components, i.e. a gasoline powered drive motor assembly, a removably mounted extension mount and a trimmer unit that are operably connected to each other. The trimmer unit includes a pair of cutter strips that are reciprocal relative to each other for cutting seaweed and that are mounted in an articulated manner to be adjusted into parallel relation with a water bottom.Type: ApplicationFiled: August 12, 2008Publication date: February 18, 2010Inventor: Richard A. Chubb
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Publication number: 20100031514Abstract: A replaceable system for use with a hair cutting device, such as a hair clipper or trimmer, having a rotary electric motor and a bladeset is provided. The replaceable system includes a drive member removably positionable between the rotary electric motor and the bladeset of the hair cutting device. The drive member includes a first end operably engaged to a moveable blade of the bladeset and a second end operably engaged to the rotary electric motor. The drive member translating the rotary motion of the rotary electric motor to a reciprocating linear motion. An extraction tool is further provided, where the extraction tool is removable attachable to the drive member and is usable to remove and insert the drive member between the rotary motor and the bladeset.Type: ApplicationFiled: August 8, 2008Publication date: February 11, 2010Inventor: Gabriel S. Kohn
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Publication number: 20090300923Abstract: A hedge trimmer has two perpendicularly arranged cutting blades. Each of the blades has teeth and the perpendicular arrangement of the blades allows simultaneous cutting in two planes. For example, the front and top of a hedge can be simultaneously trimmed.Type: ApplicationFiled: June 9, 2008Publication date: December 10, 2009Inventor: Telly Durham
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Patent number: 7624506Abstract: A replaceable tip for a driving member of a clipper is configured to drive a moving blade. The replaceable tip is replaceable without disassembly of the clipper body.Type: GrantFiled: September 28, 2004Date of Patent: December 1, 2009Assignee: Wahl Clipper CorporationInventors: Scott Melton, Keith Dirks, Lawrence Meade Parry, III
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Patent number: 7536787Abstract: A razor and trimmer combination assembly includes an elongated handle, a razor blade, a trimmer and a motor. The razor blade is disposed at or adjacent a first end of the handle. The trimmer mounts on the handle and includes a moving blade. The motor drives the moving blade.Type: GrantFiled: July 6, 2004Date of Patent: May 26, 2009Assignee: Ridgewood Industries LLCInventors: Lawrence A. Blaustein, Douglas A. Gall, John William Nottingham, John Osher
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Patent number: 7536790Abstract: A hair cutting machine (10) having a handle (12) that contains an electromotive drive unit (49) and having a cutter head (16) that is disposed at the front handle end and, in the operating position of the handle (12), has a stationary blade (18) and an oscillating blade (20) disposed above it, the stationary and oscillating blades (18, 20) forming a cutting plane (22) that lies between the two blades (18, 20) and is inclined in relation to the longitudinal axis (24) of the handle (12). In the operating position of the handle (12), the cutting plane (22) is inclined downward in relation to the longitudinal axis (24) of the handle (12) and the oscillating blade (20) is disposed above the stationary blade (18), which makes it possible to produce a haircut that is comparable to a classic scissors cut (FIG. 9).Type: GrantFiled: August 18, 2003Date of Patent: May 26, 2009Assignee: Wella AGInventor: Siegfried Ebenhoch
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Publication number: 20090100684Abstract: A motor driven tool such as a pole hedge trimmer, a pole saw or the like includes a drive unit (11) that via a shaft tube (12) enclosing a drive shaft and being provided with a handle (16), is connected to a cutting unit (13) which is turnably secured to the shaft tube. The turnable connection is under the influence of a locking mechanism (L) which from the normal working position of the operator can be released by means of a control means (M) arranged at a distance from the locking mechanism (L) and close to the handle (16).Type: ApplicationFiled: November 10, 2008Publication date: April 23, 2009Applicant: Husqvarna ABInventors: Gustaf Doragrip, Goran Dahlberg
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Publication number: 20080236986Abstract: A hand-guided work implement, in particular hedge clippers, is provided which includes a drive having an internal combustion engine for a cutting tool and a handle for a user's hand and at least one other handle at a distance from said one handle for the other hand of the user. A throttle lever is provided on one handle and is capable of being actuated by the user's hand, which controls the power of the drive. At least one brake lever for a starting brake of the cutting tool is provided on the at least one other handle. The starting brake can be adjusted between a brake position and a cutting position.Type: ApplicationFiled: June 20, 2007Publication date: October 2, 2008Applicant: DOLMAR GmbHInventor: Mark Jesse
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Patent number: 7426785Abstract: A multi type head moving shaver is disclosed. The multi type head moving shaver includes a housing provided with an ON/OFF switch and an inserting portion formed at a top of the housing, a connecting rod mounted inside the housing, the connecting rod being driven by a driving motor, a coupling member coupled to the inserting portion, the coupling member pivoting forward and backward, and a cutting head having a block coupled onto the coupling member, the cutting head pivoting together with the coupling member.Type: GrantFiled: September 5, 2006Date of Patent: September 23, 2008Inventor: Tae-Jun Ho
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Patent number: 7406770Abstract: A trimmer having first and second cutting blades. The first and second cutting blades are mounted so that first and second flat surfaces, respectively thereon, face and are substantially parallel to each other. A drive causes at least one of the first and second cutting blades to move relative to the other of the first and second cutting blades. At least one fastening assembly has first and second facing shoulders between which the first and second cutting blades reside. The at least one fastening assembly further has at least one biasing element that produces a force that biasably urges the first and second flat cutting blade surfaces towards each other.Type: GrantFiled: January 25, 2006Date of Patent: August 5, 2008Inventors: William Bradley Mace, Ronald A. Carlson
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Patent number: 7407015Abstract: A safety mechanism for a hedge trimmer is disclosed. Thumb catches 1032, 1048, together with corresponding locking members are initially biased downwardly relative to corresponding actuator levers 1010, 1014, as a result of which actuation of a motor of the hedge trimmer is prevented. This prevents inadvertent one-handed actuation of the hedge trimmer. In order to actuate the hedge trimmer, the user holds one of the actuator levers 1010, 1014 the corresponding thumb catch 1032 or 1048 upwardly, which causes movement of the other thumb catch towards its release position to allow pivotable movement of the actuator levers 1010, 1014 relative to a handle of the hedge trimmer. Movement of one of the actuator levers 1010, 1014 relative to the handle brings the lever 1018 into engagement with the electrical switch assembly 1008 to actuate the motor of the hedge trimmer.Type: GrantFiled: August 9, 2004Date of Patent: August 5, 2008Assignee: Black & Decker Inc.Inventor: Kevin Stones
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Patent number: 7401660Abstract: 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 member that moves into and out of engagement with the handle assembly for locking and unlocking the handle assembly relative to the housing. The retaining members are biased towards their engaging conditions by a spring. An interlock member on lever cooperates with an arm member to prevent disengagement of the first and second retaining members from the handle assembly when the motor is actuated, and for preventing actuation of the motor when the first or second retaining member is in a retracted condition.Type: GrantFiled: August 4, 2004Date of Patent: July 22, 2008Assignee: Black & Decker Inc.Inventor: Kevin Stones
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Publication number: 20080168661Abstract: A blade set for hair clipper which comprises a lower fixed blade, an upper fixed blade, a movable blade assembly and a blade holder. The lower fixed blade is provided with a first toothed front edge. The upper fixed blade is provided with a second toothed front edge which is disposed on top of the lower fixed blade and aligned corresponding to the lower fixed blade so that the teeth of the first toothed front edge and the second toothed front edge do not overlap with each other. The movable blade assembly is disposed in between the lower fixed blade and the upper fixed blade and is connected to a driving means driven by a driving unit in the hair clipper to reciprocate laterally relative to the lower fixed blade and the upper fixed blade in an operating condition. A third toothed front edge is provided at a front end of the movable blade assembly. A lower portion of the third toothed front edge cooperates with an upper portion of the first toothed front edge to define a first cutting surface.Type: ApplicationFiled: January 14, 2007Publication date: July 17, 2008Applicant: SPECIALIFE INDUSTRIES LIMITEDInventor: Tung Yan LAU
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Patent number: 7360311Abstract: A drive mechanism for a power tool having a housing, a motor, and an output shaft moving in a reciprocating motion. The drive mechanism comprises a gear plate (34) adapted to rotate about a first axis (Z-Z) and having a plurality of elongate first teeth (33) extending perpendicular to the first axis; and a drive conversion mechanism cooperating with the gear plate (34) to cause reciprocating movement of the output shaft in response to rotation of the gear plate about the first axis. Conventional drive mechanisms having an output shaft with a reciprocating motion generally have bevel gears with teeth formed at 45° to the axis of rotation of the gears. By providing a gear plate and a drive conversion mechanism which provides a reciprocating drive force for an output shaft with teeth formed at 90° to the axis of rotation of the gear, the gear is cheaper and easier to make as the gear teeth do not have to be formed as accurately as prior art inclined gear teeth.Type: GrantFiled: August 4, 2004Date of Patent: April 22, 2008Assignee: Black & Decker Inc.Inventor: Kevin Stones
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Patent number: 7340839Abstract: Disclosed is a hair clipper having a moving lower blade, in which the lower blade moves so that upper and lower blades reciprocate in opposite directions and cross each other. In the hair clipper, an eccentric cam is connected to a rotary shaft of a motor installed in a main body, and an eccentric shaft formed on the eccentric cam is inserted into a fixing groove formed in an upper blade fixing plate and vibrates horizontally, the lower blade is mounted on a blade support, such that the lower blade can move horizontally, and is fixed to one end of a link, the central portion of which is fixed to the blade support, and the other end of which is fixed to the lower surface of an upper blade fixing plate, to which an upper blade is fixed, and thus, when the upper blade fixing plate vibrates horizontally by the rotation of the motor, the lower blade vibrates on the blade support by the link in the direction opposite to the vibration of the upper blade.Type: GrantFiled: January 17, 2007Date of Patent: March 11, 2008Inventor: Tae-Jun Oh
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Publication number: 20080052914Abstract: A hand-held hair cutting appliance has a housing, a first cutting blade, and a second cutting blade. The first cutting blade is capable of reciprocating movement relative to the housing. A drive assembly is operatively connected to the first cutting blade for drivingly reciprocating the first cutting blade relative to the housing. A counter weight is adapted for reciprocating movement relative to the housing in response to reciprocating movement of the first cutting blade. The counter weight has at least one of a mass and a location relative to the first cutting blade to thereby at least partially counter-balance the reciprocating movement of the first cutting blade.Type: ApplicationFiled: August 31, 2006Publication date: March 6, 2008Applicant: ROVCAL, INC.Inventor: Thomas Richard Bednar
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Publication number: 20070289144Abstract: A hair clipper (1) comprises a replaceable blade block (3) having a comb-shaped stationary blade (5) and a comb-shaped moving blade (6) which is reciprocally movable in a widthwise direction of the hair clipper (1), a main body (2) having a motor (8) and a driving member (14) to transfer and to transmit a driving force of the motor (8) to reciprocal motion of the moving blade (6), and to which the blade block (3) is detachably attached, and a pressing mechanism (4) to press the moving blade (6) toward the stationary blade (5). The pressing mechanism (4) is provided on the main body (2) and has at least one contact portion (4b) which reciprocally moves in synchronism with a reciprocal motion of the moving blade (6).Type: ApplicationFiled: June 13, 2007Publication date: December 20, 2007Applicant: MATSUSHITA ELECTRIC WORKS, LTD.Inventors: Kazuhiro MORISUGI, Seiko YABUUCHI, Toshio IKUTA, Hitoshi OGAWA
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Patent number: 7290641Abstract: 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 brake drum. The first throttle cable, the brake-activating block and the second throttle cable are linearly connected together in series. The brake-activating block is designed to abut against the brake-guiding pillar in a brake position and a release position, respectively. With the relative movement among the first throttle cable, the brake-activating block and the brake-guiding pillar, the abutting or separating state between the brake band and the brake drum can be easily controlled.Type: GrantFiled: August 11, 2005Date of Patent: November 6, 2007Inventor: Hsin-Chih Chung Lee
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Patent number: 7287331Abstract: A power working machine has a machine body, a drive source mounted on the machine body for driving a work implement connected to the machine body, and an operating handle mounted on the machine body for undergoing rotation relative to the machine body. A throttle lever is mounted on the operating handle for undergoing pivotal movement to adjust an output of the drive source. A lock mechanism is mounted on the operating handle for locking the operating handle at a preselected rotational angular position relative to the machine body. A lock cancellation lever is mounted on the operating handle for unlocking the lock mechanism to thereby permit rotational movement of the operating handle relative to the machine body. A stopper section is mounted on the operating handle for permitting operation of the lock mechanism while preventing pivotal movement of the throttle lever and for preventing operation of the lock mechanism while permitting pivotal movement of the throttle lever.Type: GrantFiled: November 3, 2004Date of Patent: October 30, 2007Assignee: Honda Motor Co., Ltd.Inventors: Hideshi Sasaki, Kenjiro Hiratsuna
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Patent number: 7275322Abstract: 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 handle assembly (2, 102) comprising a front handle (6, 106) and a rear handle (7, 107) integral with the front handle. The handle assembly (2, 102) is pivotably mounted to the housing of the power tool and is adapted to be fixed in a plurality of orientations relative to the housing. By providing a handle assembly with integrally formed front and rear handles that is pivotable relative to the body of the power tool, this provides the advantage of avoiding the need for a user to hold the tool upside down when using the blade assembly to perform high-up horizontal cutting, instead of holding the tool above the user's head.Type: GrantFiled: August 4, 2004Date of Patent: October 2, 2007Assignee: Black & Decker Inc.Inventor: Kevin Stones
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Patent number: 7178248Abstract: 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 support handle (20) is pivotally mounted on the tool body (12) to be pivotally displaceable about a pivot axis (34) so as to be displaceable from a first position in which a grip (22) of the support handle is disposed forwards of the first handle (18), to a second position wherein the grip member (22) is disposed rearwardly of the first handle (18). Also disclosed is the use of restraining means engageable between the support handle (20) and the main body (12) for releasably restraining the handle in either of the first or second positions.Type: GrantFiled: June 17, 2003Date of Patent: February 20, 2007Assignee: Black & Decker Inc.Inventor: Gareth Richards
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Patent number: 7159322Abstract: A power working machine has a machine body, trimming blades attached to the machine body and drivable by a drive source, an operating handle rotatably mounted on the machine body, a throttle lever disposed on the operating handle, and a throttle lock lever disposed on the operating handle for disabling pivotal movement of the throttle lever. The operating handle has a lock mechanism for locking the operating handle at a rotational position relative to the machine body, and an operation lever for unlocking the lock mechanism to thereby permit rotational movement of the operating handle and, simultaneously with the unlocking of the lock mechanism, for placing the throttle lock lever in a locking position to disable pivotal movement of the throttle lever. The throttle lock lever has a lock portion for permitting pivotal movement of the throttle lever while simultaneously locking the operation lever of the operating handle.Type: GrantFiled: November 3, 2004Date of Patent: January 9, 2007Assignee: Honda Motor Co., Ltd.Inventors: Hideshi Sasaki, Kenjiro Hiratsuna, Hiroaki Uchitani