Multiple Shearing Position Patents (Class 30/196)
  • Patent number: 10322517
    Abstract: A blade assembly for a hair cutting apparatus includes a first blade having teeth extending along a first blade edge, and a second blade having teeth extending along a second blade edge. A distance between the first and second blade edges defines a blade gap. A yoke is coupled to the second blade and configured to convert motion of a drive into reciprocation of the second blade relative to the first blade to cut hair. A spring includes a spring base and at least one spring arm configured to reciprocate with the second blade. A guide assembly includes a guide and a spring retainer, the guide being positioned between the first blade and the second blade, and the spring retainer fixing the spring base relative to the first blade, wherein in response to moving the guide relative to the first blade, the blade gap changes.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: June 18, 2019
    Assignee: Andis Company
    Inventor: Edwin A. Werner
  • Patent number: 10064342
    Abstract: An electric hedge trimmer is provided, comprising: an elongated frame, comprising: an elongated support bar having first and second ends; first and second brackets extending perpendicularly in a first direction from the first and second ends, respectively; and a top handle extending perpendicularly from the support bar in a second direction. The electric trimmer further comprises: an electric motor secured to the first bracket; a cutting bar having a first end coupled to the electric motor and having a second end coupled to the second bracket; a plurality of cutting blades spaced around to the cutting bar; and a main handle secured to the electric motor.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: September 4, 2018
    Inventor: Syed Abu Parvez
  • Patent number: 9073225
    Abstract: A hair trimming device has a first knife, a second knife, a first protective cover, a pair of movable plates, an elastic element and a second protective cover. The first protective cover covers the first knife and has a first comb installed at a front end of the first knife, and the pair of movable plates are linked with both external sides of the second knife and the first knife, and the second protective cover is installed at a front end of the pair of movable plates, and a second comb is disposed between the first comb and the cutting blade, such that the movable plate is linked to the second comb. When use, hairs of different lengths are bent and fixed and then cut to achieve layered hair styling without any discomfort caused by tearing the hair.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: July 7, 2015
    Assignee: Tzeng Fong Industrial Corporation
    Inventors: Chin-Chuan Chen, Yu-Hsia Yang, Hung-Chieh Chen, Cheng-I Chen, Cheng-Hsiang Chen
  • Publication number: 20140260844
    Abstract: The invention discloses for one or more combs, where the spine thickness of a given comb is specifically matched to the thickness of a cutting blade for an electric clipper and used to more effectively and efficiently select the proper combination of cutting blade and comb for trimming and blending hair. In addition, a method of using the combs to make a smoother and more even transition from one hair length to another hair length in the hair-cutting process is also disclosed.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventor: Raisa Raskin
  • Publication number: 20140033549
    Abstract: A motorized extension pole including a first hollow pole member having a second hollow pole member telescopically mounted in said first pole member. The second pole member is selectively moved between extended and retracted positions with respect to said first pole member by a battery powered drive motor.
    Type: Application
    Filed: August 2, 2012
    Publication date: February 6, 2014
    Inventors: MARK J. RAMSEY, Mark C. Ramsey
  • Publication number: 20130192432
    Abstract: The invention provides a drive train for a hedge trimmer, the drive train being arranged, in use, to provide power to a downstream mechanism, the drive train comprising: a motor having an output shaft; a pinion coupled to the output shaft; a reduction gear arranged to be driven by the pinion, the reduction gear contained within a gear housing; a flywheel engageable to the output shaft, wherein the flywheel is arranged within the gear housing.
    Type: Application
    Filed: August 6, 2012
    Publication date: August 1, 2013
    Applicant: BLACK & DECKER INC.
    Inventor: David BARKER
  • Publication number: 20130067752
    Abstract: A multi-part hair clipper housing lid is provided that is configured for engagement upon a main hair clipper housing. The lid includes a base having an interior portion defined by an interior edge, a trim piece having an outer trim edge configured for locating on the interior edge, the trim piece defining an inner space defined by an inner peripheral edge, and a cover configured for seating upon the inner peripheral edge and covering the inner space. The cover is constructed and arranged such that upon being fastened to the main housing, the trim piece is retained upon the base.
    Type: Application
    Filed: September 19, 2011
    Publication date: March 21, 2013
    Inventor: Robert N. Buck, JR.
  • Patent number: 8393083
    Abstract: A thinning scissors of the present invention includes a first blade unit, a second blade unit, an adjusting button, a nut and a screw. The first blade unit has a first pivoting bore, and the second blade unit has a second pivoting bore. The adjusting button has an axle rotatably inserted in the first pivoting bore. The axle has an offset bore whose axis is offset from that of the axle. The nut is rotatably disposed in the offset bore, and the screw is inserted in the second pivoting bore and threaded with the nut. Thereby, the rotational axis of the first blade unit and that of the second blade relatively move as the adjusting button rotates in the first pivoting bore.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: March 12, 2013
    Inventor: Pei-Ling Wu
  • Publication number: 20130036615
    Abstract: There is disclosed a sheath for an electric cable for an electrically-powered trimmer and to an electrically-powered trimmer comprising a sheath. The trimmer has a body and first and second cutting blades each having a plurality of teeth. The trimmer also has a sheath disposed about at least a part of the cable. At least one portion of the sheath can be received in the cutting space between teeth and extends beyond the cable by a distance that exceeds the depth d of the cutting space. At least one portion of the sheath is wider than the opening width w of the cutting space. Thus, the dimensions of the sheath prevent the cable from entering the cutting space for any orientation of the sheath.
    Type: Application
    Filed: August 6, 2012
    Publication date: February 14, 2013
    Applicant: BLACK & DECKER INC.
    Inventor: Mark STRATFORD
  • Publication number: 20120324743
    Abstract: A balanced electric power tool (100, 700) is provided. The electric power tool (100, 700) may include a tool body (102, 702) and one or more working implements coupled to the tool body (102, 702). Further, the one or more working implemments may be connected to an electric drive motor. The electric power tool (100, 700) further includes at least one battery (114, 712), which may include at least one battery cell (204), for supplying the electric drive motor (110, 710) with electrical energy. The electric power tool (100, 700) further inlcudes a front handle (104, 704) and a rear handle (106, 706). The front handle (104, 704) is located at least partly in front of the rear handle (106, 706) along a longitudinal axis (L, L?) of the electric power tool (100, 700).
    Type: Application
    Filed: March 6, 2010
    Publication date: December 27, 2012
    Applicant: HUSQVARNA AB
    Inventors: Oskar Bergquist, Johan Björnlinger, Pär Martinsson
  • Publication number: 20120317821
    Abstract: A power tool is provided with a first unit, a second unit rotatable with respect to the first unit, a lock operation member and a lock cooperative switch. The lock operation member is configured to be operated by the user between a lock position and an unlock position, and configured to prevent rotation of the first and second units at the lock position and allow the rotation between the first and second units at the unlock position. The lock cooperative switch is disposed on the supply circuit of energy to the prime mover, and configured to enable the supply circuit when the lock operation member is at the lock position and cutoff the supply circuit when the lock operation member is at the unlock position.
    Type: Application
    Filed: February 10, 2011
    Publication date: December 20, 2012
    Applicant: MAKITA CORPORATION
    Inventors: Tadayoshi Tsuchiya, Takayoshi Yoshimura, Tomonobu Nashimoto
  • Publication number: 20120031635
    Abstract: A battery-powered portable tool, such as a chainsaw, hedge trimmer or handheld drill, comprising: a housing (1), a driven element (2) supported by the housing (1), an electric motor (6) coupled to the driven element (2) so as to drive the driven element (2), a battery (5) electrically coupled to the motor (6) so as to supply electric current to the motor (6) and a control circuit (8) arranged to control the supply of electric current to the motor (6) from the battery (5), in which the control circuit (8) comprises a main switch (8) operable by a user and an auxiliary switch (10, 11) also operable by a user; in which the control circuit (8) has: an active state in which operation of the main switch (8) by the user allows electric current to flow to the motor (6) so as to cause the driven element (2) to be driven; and an inactive state in which operation of the main switch (8) does not allow electric current to flow to the motor (6) and so the motor (6) does not drive the driven element (2); in which operation
    Type: Application
    Filed: April 8, 2009
    Publication date: February 9, 2012
    Applicant: HUSQVARNA AB
    Inventors: Johan Svennung, Par Martinsson, Johan Björnlinger
  • Publication number: 20110232105
    Abstract: In order to provide the option of dividing up the hair with one-handed use of the hair cutting machine for a hair cutting machine having a gripping piece, two clipper blades, as well as a drive to generate a relative movement of the clipper blades, it is proposed that a dividing tip be provided on the hair cutting machine and that said dividing tip be connected to the hair cutting machine via a connection.
    Type: Application
    Filed: February 24, 2011
    Publication date: September 29, 2011
    Inventors: Ute EBENHOCH, Siegfried EBENHOCH
  • Publication number: 20110197455
    Abstract: The invention pertains to a method for determining the dirtiness of a cutting tool and to a hair cutting device with an apparatus for determining the dirtiness of the cutting tool thereof. The method is intended for cutting tools that carry out a back and forth motion and are driven by an oscillating electric motor or linear motor. In order to determine the dirtiness in accordance with said method, a parameter is evaluated that is correlated with the respective state of motion of the cutting tool and used for controlling the oscillating electric motor or linear motor. Parameter changes are continuously measured and cause a dirtiness counter to count up if the parameter value exceeds at least one threshold value. The fact that the count of the dirtiness counter has reached or exceeds a reference value is then conventionally indicated.
    Type: Application
    Filed: July 26, 2007
    Publication date: August 18, 2011
    Applicant: BRAUN GMBH
    Inventors: Ingo Vetter, Holger Hild, Thomas Hohmann
  • Publication number: 20100299936
    Abstract: A pruning hook includes a handle unit, an adjusting unit mounted on the handle unit and a cutting unit mounted on the adjusting unit. The adjusting unit includes a support member mounted on the handle unit, a fastening member releasably mounted on the support member and an adjusting member having a first end provided with an adjusting ball rotatably mounted between the support member and the fastening member and a second end provided with a locking tube connected with the cutting unit. Thus, the adjusting ball of the adjusting member is rotatable and movable between the support member and the fastening member so as to adjust the angle and position of the cutting unit relative to the handle unit in a spherical and three-dimensional manner.
    Type: Application
    Filed: May 27, 2009
    Publication date: December 2, 2010
    Inventor: Chi-Tung Chen
  • Publication number: 20100107420
    Abstract: A pair of hairdressing scissors capable of adjusting the amount of hair cut comprises a first blade, a second blade and an adjustment member. The adjustment member is pivotally mounted on the first blade. The second blade is eccentrically pivoted on the adjustment member. The adjustment member can be rotated to change the relative position and the contact area between the two blades, thus changing the amount of hair cut.
    Type: Application
    Filed: November 2, 2008
    Publication date: May 6, 2010
    Inventor: Hasegawa Makoto
  • Patent number: 7703210
    Abstract: A blade driving assembly for an adjustable hair clipper of the present invention comprises a movable blade holder, a spring, a spring holder and a push lever. The spring is disposed with a coiled portion secured on the spring holder, a first portion which exerts pressure upon the movable blade holder to bias the movable blade towards the stationary blade and a second portion which biases the spring holder towards a retracted position. The push lever is driven to move forward or backward by an external force, and a front end of the push lever abuts against the rear end of the spring holder in such a way to push the spring holder forward when the push lever is driven forward, and when the push lever is driven backward, the spring holder is biased by the spring to retract until the rear end thereof abuts against the push lever.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: April 27, 2010
    Assignee: Specialife Industries Limited
    Inventor: Tung Yan Lau
  • Patent number: 7652438
    Abstract: A drive arrangement for a hand-guided working machine for agriculture, forestry and horticulture applications. The drive arrangement comprises an electric motor, a DC power source for electrical energy, and a control apparatus for the electric motor which is fed from the DC power source. The electric motor has a specific, in particular linear, characteristic curve between the electric current which is consumed by the electric motor and the rotational speed of an output shaft of the electric motor. The control apparatus has current-limiter which limits the current which flows through the electric motor to a maximum value in order to protect the electric motor against overloading. The control apparatus limits the current consumption of the electric motor in a range of low rotational speeds to values which are considerably smaller than the characteristic curve values which are given for these rotational speeds by the characteristic curve of the electric motor, as a function of the rotational speed.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: January 26, 2010
    Assignee: Andreas Stihl AG & Co KG
    Inventor: Heiko Rosskamp
  • Patent number: 7565746
    Abstract: A pair of hairdressing scissors comprises a first blade, a second blade pivotally secured to the first blade. A female connecting portion having a dovetail or T-shaped slot is disposed on at least one of the first and second blades, and a male connecting portion having a dovetail or T-shaped cross section is disposed on at least one of the first and second blades, two pairs of scissors are secured to each other in such a manner that a male connecting portion on a first one of the two pairs of scissors is inserted in a slot of a female connecting portion on a second one of the two pairs of scissors.
    Type: Grant
    Filed: August 24, 2005
    Date of Patent: July 28, 2009
    Inventor: Wen-Ya Yeh
  • Publication number: 20080209735
    Abstract: A hair removal apparatus with a housing and an actuator head movable in the housing. The actuator head accommodates an actuator system that removes the hairs and is adapted to be driven by an electric drive mechanism arranged in the hair removal apparatus. The actuator system is movable into at least one active position for hair treatment. The actuator head has only one of its ends rotatably mounted on the housing. The actuator head is readily accessible from the one side, thus enabling hairs in problem areas of the skin surface to be removed.
    Type: Application
    Filed: August 10, 2006
    Publication date: September 4, 2008
    Inventors: Werner Haczek, Thorsten Piesker, Markus Sabisch
  • Publication number: 20080201955
    Abstract: A control system (10) in a hair clipper that senses increased load while operating and, as a result, automatically and momentarily increases blade speed output for more efficient cutting.
    Type: Application
    Filed: March 9, 2007
    Publication date: August 28, 2008
    Inventor: Anthony Kit Lun Leung
  • Publication number: 20080184565
    Abstract: A comb attachment for a hair trimmer includes a comb body having a leading edge and a trailing edge, wherein the trailing edge defines an attachment member for attaching the comb body to the hair trimmer. The comb attachment further includes a plurality of tines at the leading edge of the comb body, wherein adjacent tines define a hair guide slot and the hair guide slot includes first and second side walls. The comb attachment also includes a pair of fins associated with the hair guide slot wherein one fin is positioned proximate each side wall of the hair guide slot and each fin extends from the associated tine.
    Type: Application
    Filed: February 1, 2007
    Publication date: August 7, 2008
    Applicant: Andis Company
    Inventors: Ivan K. Zoot, Christopher J. Braun
  • Publication number: 20080178468
    Abstract: An electric hair clipper with improved blade control structures for adjusting a scissors kit includes a combination housing provides a knob fitting portion, a pivot portion, an axial guiding slot, a motor receiving portion and a motor fixing portion. An adjusting knob provides a knob body and a pivot portion that pivots on the pivot portion of the combination housing, a turning operation portion around the adjusting knob for the finger to fiddle with and a pusher driving portion formed continuous various distance radially from the center of the pivot portion, an elastic orientation part is placed between the knob body and the combination housing. A motor unit is provided in the combination housing. A sliding pusher provides a body; a driven link portion that driven by the pusher driving portion of the adjusting knob to make the sliding pusher slide, a push head can push against the scissors kit.
    Type: Application
    Filed: January 30, 2008
    Publication date: July 31, 2008
    Applicant: Jeng Shyuan Precision Co., Ltd.
    Inventor: Yi-Tang Liao
  • Publication number: 20080028620
    Abstract: A detachable cover for a hand-held power tool has a sliding guide, a locking device configured to hold the cover in a closed position, and a handle, the handle being configured as a tilt-thrust element actable upon with a manual actuating force, the tilt-thrust element being tilted around a horizontal axis and forming an acute angle with a sliding direction of the sliding guide, which acute angle is located in front of a horizontal axis as viewed in a sliding-open direction.
    Type: Application
    Filed: July 30, 2007
    Publication date: February 7, 2008
    Inventor: Albrecht Kreissig
  • Patent number: 7231719
    Abstract: The present invention achieves technical advantages as devices that attach to hair clippers, providing the clippers with an appearance that is preferably in harmony with the sound of clippers, and that is also non-threatening to a person, such as a child. In one embodiment, the invention includes a first plate configured to cover a top half of a pair of clippers, and a second plate configured to cover a bottom half of a pair of clippers where the plates together preferably provide an appearance of an airplane.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: June 19, 2007
    Inventor: Susie Butcher
  • Patent number: 6643935
    Abstract: A cutting tool which has a first cutting blade which is mounted in a scissors arrangement with a second cutting blade. The first cutting blade has formed at one end thereof a first cutting element and at the opposite end thereof a second cutting element. The second cutting blade has formed thereon a third cutting element at one end thereof and at the opposite end thereof a fourth cutting element. The cutting blades are pivotally connected intermediate their ends by the inner end by a pair of handle members with the cutting blades being captured between the handle members. The handle members are to be pivotable between a first position and a second position. When in the first position, the first cutting element and third cutting element are extended and capable of performing a cutting operation on an exterior structure.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: November 11, 2003
    Inventors: Joseph T. Lowe, Sr., Richard G. Lowe
  • Patent number: 5806191
    Abstract: A hedge trimmer includes a motor and a cutting mechanism driven by the motor. A clutch mechanism is interposed between the motor and the cutting mechanism. A first and a second handle are provided to be grasped with both hands of an operator. A clutch control mechanism is provided for connecting and disconnecting the clutch mechanism. The clutch control mechanism includes a first and a second switch lever which are associated with the first and second handles, respectively, and which are operable by the operator between a first and a second position, respectively. A pin is operably connected to the first and second switch levers and is movable between a connecting position for connecting the clutch mechanism and a disconnecting position for disconnecting the clutch mechanism. Biasing members serve to hold the pin at the disconnecting position when at least one of the first and second switch levers are at the first position.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: September 15, 1998
    Assignee: Makita Corporation
    Inventors: Yoshio Yokoyama, Koji Haneda
  • Patent number: 5653030
    Abstract: A hedge trimmer includes a motor and a cutting mechanism driven by the motor. A clutch mechanism is interposed between the motor and the cutting mechanism. A first and a second handle are provided to be grasped with both hands of an operator. A clutch control mechanism is provided for connecting and disconnecting the clutch mechanism. The clutch control mechanism includes a first and a second switch lever which are associated with the first and second handles, respectively, and which are operable by the operator between a first and a second position, respectively. A pin is operably connected to the first and second switch levers and is movable between a connecting position for connecting the clutch mechanism and a disconnecting position for disconnecting the clutch mechanism. Biasing members serve to hold the pin at the disconnecting position when at least one of the first and second switch levers are at the first position.
    Type: Grant
    Filed: January 20, 1995
    Date of Patent: August 5, 1997
    Assignee: Makita Corporation
    Inventors: Yoshio Yokoyama, Koji Haneda
  • Patent number: 5412873
    Abstract: A hedge trimmer blade assembly preferably a double acting assembly having upper and lower reciprocating blades. Superimposed cutting teeth extend laterally from the sides of the assembly from each of the blades. Guard portions extend from the teeth of the upper blade only on one side and from the teeth of the lower blade only on the other side. The guard portions are asymmetrical with a straight side and a tapered side, the taper preferably including a shallow bevel near the base and a sharper bevel near the tip of the guard portion. The cutting teeth of both upper and lower blades on both sides form oval shaped cutting chambers with cooperative hook configurations at the entry to the cutting chambers. The upper and lower blades are preferably identical in configuration but inverted one relative to the other in the assembly. The straight sides of the guard portions are all faced toward the power head of the trimmer to produce a hooking action as the user sweeps the trimmer during operation.
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: May 9, 1995
    Assignee: Blount, Inc.
    Inventor: Duane M. Gibson
  • Patent number: 5325589
    Abstract: A hair clipper has a cutter head on the front end of a housing. The cutter head includes a toothed stationary blade and a toothed movable blade reciprocating on the stationary blade in hair shearing engagement between individual toothed edges thereof. The toothed edge of the stationary blade is tapered to have a thickness narrower toward its leading edge along an edgewise direction thereof. The stationary blade is slidable in a direction perpendicular to the reciprocating direction thereof, for varying a cut length of the hairs to be sheared between the movable and stationary blades. An adjustor handle is slidably mounted on the housing and linked to the movable blade for effecting the sliding movement thereof. A latch is provided to latch the adjustor handle in position for fixing the cut length. A release knob projects on a portion of the handle to be accessible by a finger of the user manipulating the handle.
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: July 5, 1994
    Assignee: Matsushita Electric Works, Ltd.
    Inventor: Nobuhiro Kubo
  • Patent number: 5237750
    Abstract: A hair clipper includes, in addition to a cutter head, a hair entrapping member and a hair pressing member which are both movable relative to a cutting edge of the cutter head. The cutter head comprises a toothed stationary blade and a toothed movable blade. The movable blade is driven to reciprocate in shearing engagement with the stationary blade for shearing hairs therebetween. The hair entrapping member is movable between an open position and a closed position. In the open position the hair entrapping member is spaced away from the cutting edge of the cutter head, thus permitting hairs to enter between the hair entrapping member and the cutting edge. In the closed position, the hair entrapping member is held close to the cutting edge to thereby seize the hairs therebetween for shearing the hairs.
    Type: Grant
    Filed: May 27, 1992
    Date of Patent: August 24, 1993
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Ryuichi Nakano, Shoji Fujikawa, Hideaki Haraguchi
  • Patent number: 5123159
    Abstract: A hair clipper has an elongated housing with a cutter head at its front and an elongated base cover connected thereto for movement between open and closed positions. The cutter head includes a stationary blade with a row of teeth and a movable blade with a like row of teeth which is driven to reciprocate relative to the stationary blade in hair shearing engagement therebetween. The teeth of the stationary and movable blades are cooperative to define a cutting edge. The base cover is formed at its front with a hair entrapping edge which extends substantially parallel with the cutting edge and which is kept spaced from the cutting edge in the open position and comes close to the cutting edge in the closed position. The hairs are introduced past the hair entrapping edge over the cutting edge in the open position, and subsequently seized between the hair entrapping edge and the cutting edge in the closed position for shearing at the cutting edge.
    Type: Grant
    Filed: August 10, 1990
    Date of Patent: June 23, 1992
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Nobuhiro Kubo, Shoji Fujikawa, Seiko Chikano
  • Patent number: 5075972
    Abstract: An improved cutting apparatus for horticultural use comprises a first cutting device, a second cutting device, and a retaining plate. The second cutting device has a plurality of second elongated holes disposed thereon serving as sliding rails on which rolling beads travel. The retaining plate comprises a plurality of through holes through which rolling beads are partially exposed. The retaining plate also comprises a plurality of elastic press pieces affixed thereto, with each of elastic press pieces having a press portion located at one end thereof for pressing the exposed portion of the rolling beads so as to ensure that first and second cutting devices make a reciprocating motion in a linear manner.
    Type: Grant
    Filed: February 26, 1991
    Date of Patent: December 31, 1991
    Inventor: Cheng-Chuan Huang
  • Patent number: 5050304
    Abstract: A hair clipper includes a cutter head and a hair entrapping member which is movable toward and away from a cutting edge of the cutter head. The cutter head comprises a stationary blade with a toothed edge defining a cutting edge of the cutter head and a movable blade with a like toothed edge. The movable blade is driven to reciprocate in shearing engagement between the toothed edges of the stationary and movable blades for shearing hairs therebetween. The hair entrapping member is preferably in the form of a comb which is movable between an open position and a closed position. In the open position the comb is spaced away from the cutting edge of the cutter head, thus permitting hairs to enter between the comb and the cutting edge. In the closed position, the comb is held close to the cutting edge to thereby seize the hairs therebetween for shearing the hairs.
    Type: Grant
    Filed: December 5, 1989
    Date of Patent: September 24, 1991
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Shoji Fujikawa, Masakatsu Araki, Shinichiro Tsujimura
  • Patent number: 4825546
    Abstract: A hair clipper has cutter head comprising a set of a stationary blade and a movable blade each having teeth in its forward edge. The movable blade is driven to reciprocate on the stationary blade for hair shearing. The hair shearing can be operated selectively at either of hair cutting, hair trimming, and hair thinning modes which are characterized to have respective effective hear shearing zones of different capability optimum suitable for the intended modes.
    Type: Grant
    Filed: August 11, 1987
    Date of Patent: May 2, 1989
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Masakatsu Araki, Hideaki Haraguchi, Shinichirou Tsujimura, Kouichi Iwanaga
  • Patent number: 4669189
    Abstract: In a hair cutting apparatus, particularly an electric hair cutting apparatus, with a shearing head comprised of a shear plate and a cutting element as well as with a spacer comb adapted to be seated on the shearing head for sliding contact with the skin surface to be treated, with the position of the forward edge of the cutting element being adjustable relative to the skin surface, the spacer comb (3)--upon being seated on the shearing head (2) of the hair cutting apparatus (1)--is adapted to be coupled with the hair cutting apparatus by centrally controlled coupling members (10, 14, 23) cooperating with coupling members (16, 18, 24) of the comb to provide a coupling (13) between the body (7) of the hair cutting apparatus (1) and the spacer comb (3), the coupling members being adapted to move the said spacer comb into its individual ratchet positions producing different lengths of the cut.
    Type: Grant
    Filed: July 28, 1986
    Date of Patent: June 2, 1987
    Assignee: Braun Aktiengesellschaft
    Inventor: Roland Ullmann
  • Patent number: 4472878
    Abstract: A manually operated hair cutting device having a movable spring wire extending through the device. The wire has a base end for engaging one's head to regulate the length at which the hair is cut. The other end of the wire is connected to an activator which is adapted to be moved to forward and rear positions. As the activator is moved forward, the wire is moved through the device such that its base end is moved away from the cutting teeth. When the base end of the wire engages the head, and the activator is moved forward, the device moves upward along the wire. A movable stop normally prevents the handles from being moved together to prevent hair cutting action. An adjustable engager on the activator engages the stop and moves it out of the way as the activator moved forward to allow the handles to be moved together for hair cutting purposes.
    Type: Grant
    Filed: February 1, 1983
    Date of Patent: September 25, 1984
    Inventor: Jess Miller
  • Patent number: 4393588
    Abstract: An implement for mincing, for example, garlic having a pair of members pivotable about a common axis. Each member has a handle portion with a protruding inner end portion adapted to abut against each other when the members are brought together, and another portion on the other side of the pivot provided with a plurality of blade-like members which interleave with a similar set of blade-like members on the other pivotable member for grasping, and shearing through a work-piece such as a clove of garlic. The ends of the members with the blade-like portions are notched at their ends remote from the pivot for aiding the grasping and holding of the work-piece between the blade-like members. Each of the pivotable members is constructed to be completely interchangeable with the other.
    Type: Grant
    Filed: March 9, 1981
    Date of Patent: July 19, 1983
    Assignee: Elpo Industries, Inc.
    Inventor: Eugene Kowalski