With Motor Patents (Class 30/216)
  • Patent number: 8156656
    Abstract: 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: Grant
    Filed: May 7, 2009
    Date of Patent: April 17, 2012
    Assignee: Black & Decker Inc.
    Inventors: Clare Tate, Matt Tollini
  • Patent number: 8146254
    Abstract: 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: Grant
    Filed: June 13, 2007
    Date of Patent: April 3, 2012
    Assignee: Panasonic Electric Works Co., Ltd.
    Inventors: Kazuhiro Morisugi, Seiko Yabuuchi, Toshio Ikuta, Hitoshi Ogawa
  • Patent number: 8136257
    Abstract: 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: Grant
    Filed: September 5, 2007
    Date of Patent: March 20, 2012
    Assignee: Senson Investments Limited
    Inventor: Tak Chiu Alfred Lau
  • Patent number: 8132540
    Abstract: 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: Grant
    Filed: August 24, 2009
    Date of Patent: March 13, 2012
    Inventor: Timothy Lee Strebeigh
  • Publication number: 20120055032
    Abstract: 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: Application
    Filed: August 19, 2011
    Publication date: March 8, 2012
    Applicant: CHERVON (HK) LIMITED
    Inventors: Andrew Roise, Keith Park
  • Publication number: 20120036722
    Abstract: 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: Application
    Filed: July 26, 2011
    Publication date: February 16, 2012
    Applicant: ANDREAS STIHL AG & CO. KG
    Inventors: Markus Hittmann, Ralf Schenk, Achim Rethaber
  • Patent number: 8079149
    Abstract: 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: Grant
    Filed: May 27, 2010
    Date of Patent: December 20, 2011
    Assignee: Rovcal, Inc.
    Inventor: Thomas Richard Bednar
  • Patent number: 8051571
    Abstract: 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: Grant
    Filed: August 30, 2005
    Date of Patent: November 8, 2011
    Assignee: Andis Company
    Inventors: Matthew L. Andis, Richard J. Tringali, Andrew A. Skuhra
  • Patent number: 8028422
    Abstract: 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: Grant
    Filed: March 17, 2006
    Date of Patent: October 4, 2011
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Christian Mikula, Gerald Kauer, Harald Duller
  • Patent number: 8028423
    Abstract: 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: Grant
    Filed: May 8, 2009
    Date of Patent: October 4, 2011
    Assignee: Genpei Hamono Co., Ltd.
    Inventors: Katsumi Matsuo, Yoshinobu Matsuo
  • Patent number: 7992308
    Abstract: 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: Grant
    Filed: March 11, 2005
    Date of Patent: August 9, 2011
    Assignee: MTD Products Inc
    Inventor: David B. Fisher
  • Publication number: 20110179651
    Abstract: 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: Application
    Filed: January 28, 2011
    Publication date: July 28, 2011
    Inventors: Markus Hittmann, Ralf Schenk, Reinhard Friedrich, Gunter Mayer
  • Patent number: 7921566
    Abstract: 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: Grant
    Filed: December 21, 2004
    Date of Patent: April 12, 2011
    Assignee: Panasonic Electric Works Co., Ltd.
    Inventors: Takashi Yamaguchi, Hitoshi Ogawa
  • Publication number: 20110010942
    Abstract: 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 e
    Type: Application
    Filed: March 17, 2010
    Publication date: January 20, 2011
    Inventor: Tung Yan LAU
  • Patent number: 7866048
    Abstract: 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: Grant
    Filed: May 16, 2006
    Date of Patent: January 11, 2011
    Assignee: Yamabiko Corporation
    Inventors: Hisao Kodama, Syuuji Satou
  • Patent number: 7814665
    Abstract: 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: Grant
    Filed: August 4, 2004
    Date of Patent: October 19, 2010
    Assignee: Black & Decker, Inc.
    Inventor: Kevin Stones
  • Patent number: 7788811
    Abstract: 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: Grant
    Filed: December 3, 2007
    Date of Patent: September 7, 2010
    Assignee: Yamabiko Corporation
    Inventors: Kazuya Hanada, Naoyuki Kirihara, Kazuteru Fukuda
  • Publication number: 20100218385
    Abstract: 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: Application
    Filed: February 22, 2010
    Publication date: September 2, 2010
    Applicant: Andreas Stihl AG & Co. KG
    Inventors: Harald Mang, Matthias Müller, Volker Reber
  • Patent number: 7761998
    Abstract: 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: Grant
    Filed: March 9, 2009
    Date of Patent: July 27, 2010
    Assignee: Ridgewood Industries LLC
    Inventors: Lawrence A. Blaustein, Douglas A. Gall, John William Nottingham, John Osher
  • Patent number: 7762001
    Abstract: 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: Grant
    Filed: December 21, 2007
    Date of Patent: July 27, 2010
    Assignee: Panasonic Electric Works Co., Ltd.
    Inventors: Kazuhiro Morisugi, Toshio Ikuta
  • Patent number: 7757404
    Abstract: 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: Grant
    Filed: July 29, 2009
    Date of Patent: July 20, 2010
    Assignee: Panasonic Electric Works Co., Ltd.
    Inventors: Kazuyuki Ouchi, Hidekazu Sueyoshi, Toshihiro Takeuchi, Kenichi Muraki, Keiko Funatsu
  • Patent number: 7757405
    Abstract: 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: Grant
    Filed: September 19, 2006
    Date of Patent: July 20, 2010
    Assignee: Echo, Incorporated
    Inventors: Brent Peterson, David Ni
  • Patent number: 7748123
    Abstract: 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: Grant
    Filed: August 31, 2006
    Date of Patent: July 6, 2010
    Assignee: Rovcal, Inc.
    Inventor: Thomas Richard Bednar
  • Publication number: 20100154226
    Abstract: 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: Application
    Filed: December 17, 2009
    Publication date: June 24, 2010
    Applicant: Andreas Stihl AG & Co. KG
    Inventors: Georg Heinzelmann, Markus Hittmann, Antonio Fattorusso, Marcus Stein
  • Publication number: 20100154227
    Abstract: 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: Application
    Filed: December 17, 2009
    Publication date: June 24, 2010
    Applicant: Andreas Stihl AG & Co. KG
    Inventor: Georg Heinzelmann
  • Publication number: 20100146796
    Abstract: 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: Application
    Filed: December 11, 2009
    Publication date: June 17, 2010
    Applicant: ANDREAS STIHL AG & CO. KG
    Inventor: Ludwig Geromiller
  • Patent number: 7698822
    Abstract: 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: Grant
    Filed: August 29, 2003
    Date of Patent: April 20, 2010
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Johannes Kostner, Gerald Kauer, Michael Janny
  • Publication number: 20100058596
    Abstract: 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: Application
    Filed: December 6, 2007
    Publication date: March 11, 2010
    Inventor: Gook Hyun Shim
  • Publication number: 20100037469
    Abstract: 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: Application
    Filed: August 12, 2008
    Publication date: February 18, 2010
    Inventor: Richard A. Chubb
  • Publication number: 20100031514
    Abstract: 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: Application
    Filed: August 8, 2008
    Publication date: February 11, 2010
    Inventor: Gabriel S. Kohn
  • Publication number: 20090300923
    Abstract: 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: Application
    Filed: June 9, 2008
    Publication date: December 10, 2009
    Inventor: Telly Durham
  • Patent number: 7624506
    Abstract: 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: Grant
    Filed: September 28, 2004
    Date of Patent: December 1, 2009
    Assignee: Wahl Clipper Corporation
    Inventors: Scott Melton, Keith Dirks, Lawrence Meade Parry, III
  • Patent number: 7536787
    Abstract: 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: Grant
    Filed: July 6, 2004
    Date of Patent: May 26, 2009
    Assignee: Ridgewood Industries LLC
    Inventors: Lawrence A. Blaustein, Douglas A. Gall, John William Nottingham, John Osher
  • Patent number: 7536790
    Abstract: 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: Grant
    Filed: August 18, 2003
    Date of Patent: May 26, 2009
    Assignee: Wella AG
    Inventor: Siegfried Ebenhoch
  • Publication number: 20090100684
    Abstract: 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: Application
    Filed: November 10, 2008
    Publication date: April 23, 2009
    Applicant: Husqvarna AB
    Inventors: Gustaf Doragrip, Goran Dahlberg
  • Publication number: 20080236986
    Abstract: 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: Application
    Filed: June 20, 2007
    Publication date: October 2, 2008
    Applicant: DOLMAR GmbH
    Inventor: Mark Jesse
  • Patent number: 7426785
    Abstract: 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: Grant
    Filed: September 5, 2006
    Date of Patent: September 23, 2008
    Inventor: Tae-Jun Ho
  • Patent number: 7406770
    Abstract: 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: Grant
    Filed: January 25, 2006
    Date of Patent: August 5, 2008
    Inventors: William Bradley Mace, Ronald A. Carlson
  • Patent number: 7407015
    Abstract: 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: Grant
    Filed: August 9, 2004
    Date of Patent: August 5, 2008
    Assignee: Black & Decker Inc.
    Inventor: Kevin Stones
  • Patent number: 7401660
    Abstract: 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: Grant
    Filed: August 4, 2004
    Date of Patent: July 22, 2008
    Assignee: Black & Decker Inc.
    Inventor: Kevin Stones
  • Publication number: 20080168661
    Abstract: 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: Application
    Filed: January 14, 2007
    Publication date: July 17, 2008
    Applicant: SPECIALIFE INDUSTRIES LIMITED
    Inventor: Tung Yan LAU
  • Patent number: 7360311
    Abstract: 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: Grant
    Filed: August 4, 2004
    Date of Patent: April 22, 2008
    Assignee: Black & Decker Inc.
    Inventor: Kevin Stones
  • Patent number: 7340839
    Abstract: 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: Grant
    Filed: January 17, 2007
    Date of Patent: March 11, 2008
    Inventor: Tae-Jun Oh
  • Publication number: 20080052914
    Abstract: 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: Application
    Filed: August 31, 2006
    Publication date: March 6, 2008
    Applicant: ROVCAL, INC.
    Inventor: Thomas Richard Bednar
  • Publication number: 20070289144
    Abstract: 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: Application
    Filed: June 13, 2007
    Publication date: December 20, 2007
    Applicant: MATSUSHITA ELECTRIC WORKS, LTD.
    Inventors: Kazuhiro MORISUGI, Seiko YABUUCHI, Toshio IKUTA, Hitoshi OGAWA
  • Patent number: 7290641
    Abstract: 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: Grant
    Filed: August 11, 2005
    Date of Patent: November 6, 2007
    Inventor: Hsin-Chih Chung Lee
  • Patent number: 7287331
    Abstract: 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: Grant
    Filed: November 3, 2004
    Date of Patent: October 30, 2007
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hideshi Sasaki, Kenjiro Hiratsuna
  • Patent number: 7275322
    Abstract: 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: Grant
    Filed: August 4, 2004
    Date of Patent: October 2, 2007
    Assignee: Black & Decker Inc.
    Inventor: Kevin Stones
  • Patent number: 7178248
    Abstract: 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: Grant
    Filed: June 17, 2003
    Date of Patent: February 20, 2007
    Assignee: Black & Decker Inc.
    Inventor: Gareth Richards
  • Patent number: 7159322
    Abstract: 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: Grant
    Filed: November 3, 2004
    Date of Patent: January 9, 2007
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hideshi Sasaki, Kenjiro Hiratsuna, Hiroaki Uchitani