Rotary Patents (Class 30/347)
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Patent number: 8689451Abstract: A rotating head for hedge trimmers, comprising: a support body (2, 3), predisposed to be fixed to a drive shaft of a hedge trimmer, which support body (2, 3) comprises a first half-shell (2) and a second half-shell (3), reciprocally and releasably couplable; at least a snap-fit engagement (4, 5), comprising a male connector (4) predisposed to snap-fit into an engagement seating (5); the male connector (4) is flanked to the internal side of a peripheral wall (31).Type: GrantFiled: November 11, 2011Date of Patent: April 8, 2014Assignee: Tecomec S.R.L.Inventor: Enrico Cigarini
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Patent number: 8667695Abstract: The present application provides a work head for a rotational brush cutter. The work head comprises an upper plate, a lower plate and a blade, the upper plate and the lower plate being fixedly coupled. The lower plate is circular and has a passage therethrough with a gear arranged in the passage. The blade has a body portion and a connection portion with the body portion able to be extended outside of the upper and lower plates. The through passage is designed so that the blade can be replaced without requiring the upper plate and lower plate to be disassembled. As a result, because the blade is not restricted by a narrow space between the upper plate and the main frame, the work head does not need to be removed from the brush cutter to replace the blade thereby saving time and effort.Type: GrantFiled: June 20, 2011Date of Patent: March 11, 2014Assignee: Chervon (HK) LimitedInventors: Toshinari Yamaoka, Fangjie Nie, Chao Meng
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Publication number: 20140053416Abstract: A protective wear cap for use on a trimmer head of a flexible line rotary trimmer including a cylindrical side wall terminating at its upper end in an upper mounting wall and at its lower end in a radially projecting protective flange. A mounting aperture is centrally disposed in the mounting wall of the wear cap so that a drive shaft of a rotary trimmer can extend through the housing and through the mounting aperture into the wear cap to be engaged by a fastening member securing the wear cap to the drive shaft of the rotary trimmer and to the trimmer head. The cylindrical side wall of the wear cap defines an axial length sized to position the protective flange thereon below the lowermost surface of the trimmer head to protect the trimmer head from wear during use.Type: ApplicationFiled: August 22, 2012Publication date: February 27, 2014Applicant: PROULX MANUFACTURING, INC.Inventor: Richard A. Proulx
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Publication number: 20140033546Abstract: An axial rotation grass-cutting head, comprising for at least one portion thereof, an upper body (11, 211, 311, 411, 511, 611), a lower body (12, 112, 212, 312, 412, 512, 612) and at least one intermediate body (14, 214, 314, 414, 514, 614) arranged between said upper and lower body, said upper, lower and intermediate bodies defining, when coupled, two channels (15, 16, 215, 216, 315?, 316?, 415, 416, 515?, 516?, 615, 616) for housing a single cutting line (17, 217, 317, 417, 517, 617), having respective end openings on the side face of the head.Type: ApplicationFiled: August 1, 2013Publication date: February 6, 2014Applicant: ARNETOLI MOTOR S.R.L.Inventor: Fabrizio ARNETOLI
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Patent number: 8640588Abstract: A generally cylindrical cutting head for a weed cutting machine has blades that are exposed and lifted off of the head when an upper portion is rotated, with respect to a lower portion and/or a cap, without tools and without disassembly of the structure. A lock ensures that the upper portion does not open until desired, by a rigid plate or aim extending, in the locked position, through portions of both the upper portion and the lower portion, or through portions of both the upper portion and a cap portion. The lock plate/arm may extend into the cutting head from the top, bottom, or side. When pushed inward, the lock plate or arm moves to no longer reside in both upper and lower portions, or both upper and cap portions, to free the upper portion to rotate relative to the lower portion and cap.Type: GrantFiled: February 1, 2011Date of Patent: February 4, 2014Inventor: Gordon Strader
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Line-type grass cutting head which can be alternatively used on machines with left or right rotation
Patent number: 8615887Abstract: A head including a housing (3A, 3B) for a winding spool (7) for winding the cutting line (F), provided with projections (15, 19) cooperating with teeth (17, 21) integral with the housing. The teeth and the projections are arranged in such a way so as to allow a stepped rotation of the spool with respect to the housing, when the spool is translated alternatively in opposite directions parallel to the axis of the head. The head includes a first series of teeth and a second series of teeth (21A, 21) which can be used alternatively and which are suitable each to allow the rotation of the spool (7) in one direction and to prevent the rotation in the opposite direction with respect to the housing.Type: GrantFiled: June 28, 2012Date of Patent: December 31, 2013Assignee: Arnetoli Motor S.r.l.Inventor: Fabrizio Arnetoli -
Publication number: 20130283623Abstract: A rotary cutting head uses flexible strands of cutting wire that can be placed inside said cutting head. The clamping mechanism of the cutting head comprises pinching cams that are mounted in such a way as to be pivotable on planes that are parallel to one another and to the axis of rotation of the cutting head. The support for the clamping mechanism is mounted in such a way as to be axially movable in the outer housing of the cutting head. The outer housing and the support are complementary to each other such that simultaneously applying a relative axial movement to the outer housing and the support in opposite directions enables the pinching cams to be lifted, allowing the cutting strands to be placed, unwound, or retracted, or enables the cams to be lowered in order for the cutting strands to be blocked within the cutting head.Type: ApplicationFiled: April 18, 2011Publication date: October 31, 2013Applicant: PELLENC (Societe Anonyme)Inventor: Roger Pellenc
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Publication number: 20130283752Abstract: A line trimmer or mower head includes an automatic and/or manual line feed system with reduced tendency for cut and worn line to retract fully back into the spool housing. The line trimmer includes a rotatable spool assembly of at least one feedable line, at least one primary wall member adjacent a periphery of said spool assembly and a guide passage extending generally radially away from said primary wall member. The guide passage is partly defined by a substantially radially extending first formation arranged to bear upon line extending through said guide passage, such that in use line located within said guide passage is restricted to a substantially radial orientation.Type: ApplicationFiled: March 18, 2013Publication date: October 31, 2013Inventors: John Lister, Robert Davidson, Mark Glanville
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Patent number: 8567074Abstract: A grass-cutting head (10) including a spool (11) for winding at least one cutting line and a housing (12) for the cutting line. The housing (12) includes a first part (13) and a second part (14) coupled to each other so as to allow at least one reciprocal angular movement around the axis (X) of rotation of the grass-cutting head. The housing (12) presents at least one passage (31) towards the outside for the cutting line. On the spool (11) is defined at least one inserting portion (33) for inserting the cutting line so that to a rotation of the spool corresponds a winding or an unwinding of the line. Elements (25, 26, 27, 28, 29) are present for winding the cutting line on the spool (11) and matching elements (35, 36) for matching the angular position of the portion (33) of insertion on the spool (11).Type: GrantFiled: February 19, 2010Date of Patent: October 29, 2013Assignee: Arnetoli Motor S.r.l.Inventor: Fabrizio Arnetoli
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Publication number: 20130269192Abstract: A rotary cutting head is provided for portable cutting devices, such as lawn trimmers, edge trimmers, brush cutters, hedge trimmers, and the like which use cutting blades. The drive shaft, the blade supporting housing, and the blade of said cutting head have complementary means which, manually and without using tools, allow the blade to be placed, changed, centered, and axially positioned relative to the drive shaft and to be rotationally coupled to the blade supporting housing by performing an axial movement combined with an angular or linear movement of the blade relative to the drive shaft until the blade and the supporting housing start automatically interlocking.Type: ApplicationFiled: April 18, 2011Publication date: October 17, 2013Applicant: PELLENC (Societe Anonyme)Inventor: Roger Pellenc
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Patent number: 8549827Abstract: A rotary cutter for a mower has a cord for cutting grass and the like by rotating itself; a reel for housing the cord and feeding the cord while intermittently rotating; a case for housing the reel; a cover for covering the case; and a pressing body protruding from the case. The pressing body is axially movable by being pressed, and intermittently rotating the reel. The reel and the pressing body are integrally constructed. Concave grooves for inserting the cord are provided in the reel in a radial direction and the cord is wound by fitting it to the concave grooves.Type: GrantFiled: February 3, 2012Date of Patent: October 8, 2013Assignee: Starting Industrial Co., Ltd.Inventors: Hiroki Kato, Tetsuya Yamada
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Publication number: 20130185946Abstract: A cutter head of an implement, comprising a cutting blade rotatabiy drivable about an axis of rotation and provided with at least two blade wings that extend along a longitudinal axis in a radial direction relative to the axis of rotation. The cutting blade is clamped between two contact or pressure pieces, at least one of which is provided with at least one radially extending dampening projection that rests against at least one of the blade wings and has a longitudinal axis that is angularly offset relative to the longitudinal axis of the blade wing. A protection against rotation that acts in at least one direction of rotation is provided between cutting blade and the contact or pressure piece that is provided with the at least one radially extending dampening projection. The protection against rotation is in the form of a positive connection between the angularly offset dampening projection and an outer edge of an associated blade wing.Type: ApplicationFiled: March 7, 2013Publication date: July 25, 2013Applicant: Andreas Stihl AG & Co. KGInventor: Andreas Stihl AG & Co. KG
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Publication number: 20130185944Abstract: A two-part rotary knife blade (2300, 3300) for a power operated rotary knife. The knife blade (2300) includes a carrier portion (2302, 3302) and a blade portion (2350, 3350), the blade portion configured to be received in a nested relationship by the carrier portion and being releasably secured to the carrier portion by an attachment structure (2370, 3370). The attachment structure (2370, 3370) including a plurality of projections (2372, 3372) extending from one of an outer wall (2354, 3354) of the blade portion (2350, 3350) and the inner wall (2304, 3304) of the carrier portion and a plurality of sockets (2374, 3374) disposed in the other of the outer wall of the blade portion and the inner wall of the carrier portion, each of the plurality of projections being received in a respective different one of the plurality of sockets to releasably secure the blade portion to the carrier portion.Type: ApplicationFiled: July 23, 2012Publication date: July 25, 2013Applicant: Bettcher Industries, Inc.Inventors: TERRY J. THOMPSON, Nicholas A. Mascari, Jeffrey A. Whited
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Patent number: 8464431Abstract: A trimmer head configured for operating in a fixed line configuration and a bump-feed configuration. The trimmer head includes a base including a cup having a top wall and a substantially cylindrical side wall defining an aperture. The base also includes a collar extending axially from the top wall of the cup for coupling the trimmer head with the output shaft. A fixed line head is at least partially received within the cup when the trimmer head is in the fixed line configuration and a bump-feed spool is at least partially received within the cup of the base when the trimmer head is in the bump-feed configuration.Type: GrantFiled: January 22, 2010Date of Patent: June 18, 2013Assignee: Techtronic Outdoor Products Technology LimitedInventors: Marion W. Reynolds, Todd Rickey, John W. Wiggins, John Morris
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Patent number: 8464432Abstract: The present invention generally pertains to a saw device. More particularly, the present invention relates to a handheld centerless saw. The saw comprises a frame and a pair of driving rollers mounted to the frame for rotation. The saw also comprises an annular blade mounted between the drive rollers and functionally engaged thereby, where the blade defines frontward and backward hemispheres. At least two guide wheels are mounted to the frame, or to a cover mounted to the frame, the guide wheels being positioned in the backward hemisphere of the blade. The guide wheels are operatively engaging the inner circular edge of the blade. A drive assembly mounted to the frame is operable for urging the countersense rotation of drive rollers, thereby causing rotation of the blade.Type: GrantFiled: June 6, 2011Date of Patent: June 18, 2013Inventors: Paul Béchamp, Stéphane Campeau
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Publication number: 20130145630Abstract: A spool cartridge for use in a cutting head of a string trimmer, in which the cutting head includes a locking arm having an engagement end and a balance end. The spool cartridge includes a spool rotatably mounted within a spool cassette housing and has cutting line wound thereon. The spool cassette housing includes one or more openings for the cutting line. An internal gear is formed in the spool and is in geared engagement with a locking assembly. The locking assembly is arranged to be engaged by the engagement end of the locking arm to automatically lock and unlock the spool with respect to the spool cassette housing.Type: ApplicationFiled: December 3, 2012Publication date: June 13, 2013Applicant: BLACK & DECKER INC.Inventor: BLACK & DECKER INC.
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Publication number: 20130133208Abstract: A trimmer head for a rotary trimmer machine includes a housing having a recess, a trimmer line spool removably mounted in the recess, at least one exit opening on the housing wherein trimmer line wound on the spool passes through from within the housing, and an eyelet disposed in the exit opening. The eyelet includes an open area leading into a slotted area, said open area being normally closed by a pivoting gate biased into the closed position, and movable to an open position allowing trimmer line to move through the open area past the gate into the slotted area. The trimmer line spool is reversible so that when installed in a first configuration, the trimmer head may be installed on a clockwise rotating trimmer machine, and when the trimmer line spool is installed in a second configuration, the trimmer head may be installed on a counter-clockwise rotating trimmer machine.Type: ApplicationFiled: November 29, 2012Publication date: May 30, 2013Applicant: Shakespeare Company, LLCInventor: Shakespeare Company, LLC
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Patent number: 8429886Abstract: A rotary cutter for a mower has a cord for cutting grass and the like by rotating itself; a reel for housing the cord and feeding the cord while intermittently rotating; a case for housing the reel; a cover for covering the case; and a pressing body protruding from the case. The pressing body is axially movable by being pressed, and intermittently rotating the reel. The reel and the pressing body are integrally constructed. Concave grooves for inserting the cord are provided in the reel in a radial direction and the cord is wound by fitting it to the concave grooves.Type: GrantFiled: February 27, 2009Date of Patent: April 30, 2013Assignee: Starting Industrial Co., Ltd.Inventors: Hiroki Kato, Tetsuya Yamada
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Patent number: 8418370Abstract: A method of using a grass trimming apparatus includes the steps of: providing a grass trimming apparatus, including a trimmer head assembly having a spinning support guide at a bottom portion thereof, and a cutting mechanism positioned above the spinning support guide; holding the grass trimming apparatus in an operable position; placing the spinning support guide on a trimmable surface, whereby the spinning support guide provides a point of contact between the grass trimming apparatus and the trimmable surface; activating the cutting mechanism; trimming the cutting surface to a desired height; and moving the grass trimming apparatus along the trimmable surface while maintaining the point of contact.Type: GrantFiled: October 20, 2011Date of Patent: April 16, 2013Inventor: Gene Hoelscher
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Patent number: 8418371Abstract: A kit for retrofitting a grass trimming apparatus with a spinning support guide includes a base mount disc, a semispherical base, a guide fastener having a head with a hexagonal opening, one or more spacer discs, one or more disc fasteners, and a hex key. Furthermore, the base mount disc is adapted to affix to the semispherical base with the one or more disc fasteners and define a chamber for partially housing the guide fastener therein, and the hex key is adapted to rotate the guide fastener to threadably attach to a threaded receptacle on an underside of the grass trimming apparatus.Type: GrantFiled: October 20, 2011Date of Patent: April 16, 2013Inventor: Gene Hoelscher
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Publication number: 20130031789Abstract: A powered rotary knife includes a handle, a blade housing, an annular blade, and a blade bushing for rotatably mounting the blade within the housing. The blade housing includes an inner groove that is operable to receive the blade bushing therein. The blade housing and blade bushing are split in order to expand and receive the blade. The blade includes an outer groove that is also operable to receive the blade bushing. Thus, the blade bushing is spaced between the blade housing and blade and rotatably secures the blade within the blade housing.Type: ApplicationFiled: October 8, 2012Publication date: February 7, 2013Inventor: Clark A. Levsen
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Publication number: 20130025138Abstract: A power operated rotary knife (100) including: an annular rotary knife blade (300) including a knife blade bearing surface (319); a blade housing (400) defining a blade housing bearing surface (459); and a blade-blade housing bearing structure (500) disposed between the knife blade bearing surface (319) and the blade housing bearing surface (459). The blade-blade housing bearing structure (500) includes a rolling bearing strip (502) having a plurality of rolling bearings (506), such as ball bearings, disposed in spaced apart relation in a flexible separator cage (508). The rolling bearing strip (502) traverses through an annular passageway (504) defined between the knife blade bearing surface (319) and the blade housing bearing surface (459) to secure the knife blade (300) to the blade housing (400) and support the knife blade for rotation about a central axis (R) with respect to the blade housing (400).Type: ApplicationFiled: July 25, 2011Publication date: January 31, 2013Applicant: Bettcher Industries, Inc.Inventors: JEFFREY A. WHITED, NICHOLAS A. MASCARI, KEVIN V. STUMP, MARTIN PATRICK TANSEY
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Patent number: 8341847Abstract: A rotary cutter for a mower for mowing grass and the like with a cord of a desired length extending in a radial direction of a cutting head from the cutting head driven for rotation through a drive shaft is described. The rotary cutter includes at least one fastening element for fixing one end of the cord to a cutting head main body. An inner end portion of the cord inserted from a sidewall of the head main body is fastened by the fastening element. The cord is removed and replaced with a new cord when the cord is worn out. The cord fastening element is disposed near a drive shaft coupling shaft tube portion in the cutting head main body. A cord outlet for removing the cord is provided to the drive shaft coupling shaft tube portion side. The inner end portion of the cord extends outside from the cord outlet and along a sidewall of the drive shaft coupling shaft tube portion of the cutting head main body.Type: GrantFiled: December 20, 2006Date of Patent: January 1, 2013Assignee: Starting Industrial Co., Ltd.Inventor: Hiroki Kato
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Publication number: 20120311876Abstract: A cutting element adapted for use with an oscillating power tool having an output shaft that makes an oscillating movement about its own axis. The cutting element has a longitudinally extending main body, a mounting hole and a cutting portion for acting upon a workpiece to be processed. The mounting hole is disposed at a first end of the main body and is adapted to be connected to the output shaft of the oscillating power tool. The cutting portion is provided at a second end of the main body and includes a first cutting portion and a second cutting portion. The first cutting portion has a first cutting blade, the second cutting portion has a second cutting blade, and a distance from the second cutting blade to the axis of the output shaft is greater than a distance from the first cutting blade to the axis of the output shaft.Type: ApplicationFiled: June 1, 2012Publication date: December 13, 2012Applicant: CHERVON (HK) LIMITEDInventor: Xiaofeng Zhang
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Publication number: 20120304468Abstract: The present invention generally pertains to a saw device. More particularly, the present invention relates to a handheld centerless saw. The saw comprises a frame and a pair of driving rollers mounted to the frame for rotation. The saw also comprises an annular blade mounted between the drive rollers and functionally engaged thereby, where the blade defines frontward and backward hemispheres. At least two guide wheels are mounted to the frame, or to a cover mounted to the frame, the guide wheels being positioned in the backward hemisphere of the blade. The guide wheels are operatively engaging the inner circular edge of the blade. A drive assembly mounted to the frame is operable for urging the countersense rotation of drive rollers, thereby causing rotation of the blade.Type: ApplicationFiled: June 6, 2011Publication date: December 6, 2012Inventors: Paul Bechamp, Stéphane Campeau
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Patent number: 8307558Abstract: In an embodiment, at least one pair cleats is provided. The two cleats of each pair are symmetrically arranged about a passageway for trimmer line. The two cleats of each pair allow trimmer line to be inserted through an entrance port with relatively little (if any) hindrance. However, the cleats grip the trimmer line preventing the trimmer line from being removed via the entrance port when the trimmer line is pulled from the entrance port (e.g., during use). In an embodiment, a trimmer head is provided with an exit port on the top of the trimmer head, which is for removing trimmer line by pulling the trimmer line through the exit port. The trimmer head uses a fixed length of trimmer line, which may be loaded with new trimmer line by inserting the trimmer line into an entrance port until one end of the trimmer line reaches the exit port.Type: GrantFiled: June 8, 2007Date of Patent: November 13, 2012Inventor: George E. Alliss
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Patent number: 8307559Abstract: A bush cutter includes two types of cutting blades which differ completely in characteristics used to cut grasses and the like. One cutting blade is a resin string blade wound around a reel installed on a base plate, and the other is a metal blade installed in such a way as to protrude outward from the base plate. The bush cutter also includes a string guide which guides the resin blade to extend outwardly at less than a 90 degree angle from the reel as it projects from the base plate.Type: GrantFiled: September 20, 2007Date of Patent: November 13, 2012Inventor: Tatsuo Tomita
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LINE-TYPE GRASS CUTTING HEAD WHICH CAN BE ALTERNATIVELY USED ON MACHINES WITH LEFT OR RIGHT ROTATION
Publication number: 20120272535Abstract: A head including a housing (3A, 3B) for a winding spool (7) for winding the cutting line (F), provided with projections (15, 19) cooperating with teeth (17, 21) integral with the housing. The teeth and the projections are arranged in such a way so as to allow a stepped rotation of the spool with respect to the housing, when the spool is translated alternatively in opposite directions parallel to the axis of the head. The head includes a first series of teeth and a second series of teeth (21A, 21) which can be used alternatively and which are suitable each to allow the rotation of the spool (7) in one direction and to prevent the rotation in the opposite direction with respect to the housing.Type: ApplicationFiled: June 28, 2012Publication date: November 1, 2012Inventor: Fabrizio ARNETOLI -
Patent number: 8291599Abstract: A mowing head is described, particularly for a bush-cutter, comprising a rotor rotating around a rotation axis (R-R) and its cover, in which the rotor is equipped with at least one supporting surface from which at least one external perimeter wall and at least one internal wall depart, such external perimeter wall and such internal wall mutually defining at least one housing seat of at least one length of flexible cutter, the external perimeter wall being radially equipped with at least one slit adapted to allow at least one length of the flexible cutter to go out from inside the housing seat to the outside.Type: GrantFiled: April 10, 2007Date of Patent: October 23, 2012Inventor: Michele Piccolo
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Publication number: 20120260508Abstract: A trimmer head for cutting vegetation is adaptable to operate in blade trimming mode and in monofilament trimming mode, and requires minimal time and effort to change between the two modes. The device comprises a bottom plate and a top plate. The top and bottom plate are urged together, thereby locking the blades in place. When the top and bottom plate are separated and rotated relative to one another, a blade may be inserted or removed from the blade posts by a gap formed between the top of the blade post and the top plate. The top plate includes a surface having a plurality of trimmer blade posts adaptable to pivotally mount at least one trimmer blade. The top plate further comprises a plurality of monofilament holes for receiving a monofilament line therethrough.Type: ApplicationFiled: April 13, 2012Publication date: October 18, 2012Inventor: Randy A. Duvall
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Publication number: 20120255182Abstract: Provided is a rotary cutter for a mower that achieves easy and rapid cord insertion and improved work efficiency. A rotary cutter for a mower includes: a cord cutting grass or the like; a reel housing the cord, a case and a cover housing the reel therein; a pressing body rotating the reel; and a resilient element elastically supporting the case and the cover, and the rotary cutter is configured such that the reel axially moved by rotation of the pressing body so as to come into contact with the pressing body, and the cord is wound around the reel while being clamped in a clearance created between the reel due to the axial movement of the reel.Type: ApplicationFiled: November 12, 2010Publication date: October 11, 2012Applicant: STARTING INDUSTRIAL CO., LTD.Inventor: Hiroki Kato
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Patent number: 8281493Abstract: A powered rotary knife includes a handle, a blade housing, an annular blade, and a blade bushing for rotatably mounting the blade within the housing. The blade housing includes an inner groove that is operable to receive the blade bushing therein. The blade housing and blade bushing are split in order to expand and receive the blade. The blade includes an outer groove that is also operable to receive the blade bushing. Thus, the blade bushing is spaced between the blade housing and blade and rotatably secures the blade within the blade housing.Type: GrantFiled: October 18, 2011Date of Patent: October 9, 2012Assignee: Hantover, Inc.Inventor: Clark A. Levsen
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Patent number: 8266805Abstract: A trimmer head assembly has a housing that defines an interior. A spool is provided. The spool can be inserted into the interior of the housing either in an upright configuration or in a flipped inverted orientation. A spring is provided in the housing that biases the spool into a first position within the housing. A ratcheting mechanism exists between the spool and the housing that enables the spool to rotate only in a first direction when in said first position. The direction of rotation permitted by the ratcheting mechanism depends upon the orientation of the spool within the housing. In this manner, a single trimmer head assembly can be made to operate on a clockwise trimmer or a counterclockwise trimmer merely by inverting the spool.Type: GrantFiled: June 24, 2009Date of Patent: September 18, 2012Inventor: George Everett Alliss
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Line-type grass cutting head which can be alternatively used on machines with left or right rotation
Patent number: 8230602Abstract: The head comprises a housing (3a, 3B) for a winding spool (7) for winding the cutting line (F), provided with projections (15, 19) cooperating with teeth (17, 21) integral with the housing. The teeth and the projections are arranged in such a way so as to allow a stepped rotation of the spool with respect to the housing, when said spool is translated alternatively in opposite directions parallel to the axis of the head. The head comprises a first series of teeth and a second series of teeth (21A, 21B) which can be used alternatively and which are suitable each to allow the rotation of the spool (7) in one direction and to prevent the rotation in the opposite direction with respect to the housing.Type: GrantFiled: October 21, 2008Date of Patent: July 31, 2012Assignee: Arnetoli Motor S.r.L.Inventor: Fabrizio Arnetoli -
Patent number: 8215022Abstract: A food product slicer includes a base and a knife mounted for rotation relative to the base. A slide rod extends in a direction past the knife. A carriage assembly is mounted for reciprocal movement back and forth past a cutting edge of the knife. At least one bearing arrangement connects the carriage assembly to the slide rod to facilitate the reciprocal movement of the carriage assembly. The bearing arrangement includes a lubricant reservoir. A bearing bracket holds a bearing that rides on the slide rod. The lubricant reservoir is fluidly connected to deliver lubricant to the slide rod in proximity to the bearing.Type: GrantFiled: March 2, 2007Date of Patent: July 10, 2012Assignee: Premark FEG L.L.C.Inventors: Fariborz Feizi, Shahram Shariff, Brian Stump
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Publication number: 20120131804Abstract: A rotating head for hedge trimmers, comprising: a support body (2, 3), predisposed to be fixed to a drive shaft of a hedge trimmer, which support body (2, 3) comprises a first half-shell (2) and a second half-shell (3), reciprocally and releasably couplable; at least a snap-fit engagement (4, 5), comprising a male connector (4) predisposed to snap-fit into an engagement seating (5); the male connector (4) is flanked to the internal side of a peripheral wall (31).Type: ApplicationFiled: November 11, 2011Publication date: May 31, 2012Applicant: TECOMEC S.R.L.Inventor: ENRICO CIGARINI
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Publication number: 20120131805Abstract: A rotary cutter for a mower has a cord for cutting grass and the like by rotating itself; a reel for housing the cord and feeding the cord while intermittently rotating; a case for housing the reel; a cover for covering the case; and a pressing body protruding from the case. The pressing body is axially movable by being pressed, and intermittently rotating the reel. The reel and the pressing body are integrally constructed. Concave grooves for inserting the cord are provided in the reel in a radial direction and the cord is wound by fitting it to the concave grooves.Type: ApplicationFiled: February 3, 2012Publication date: May 31, 2012Applicant: STARTING INDUSTRIAL CO., LTD.Inventors: Hiroki Kato, Tetsuya Yamada
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Patent number: 8176639Abstract: A vegetation trimmer with a spool and hub assembly has a cutting filament wound around the spool. The free end of the filament extends through an aperture in the hub into the cutting plane. The spool and hub are rotated at a high rate to allow the filament to cut vegetation. The spool includes a plurality of arms which engage with arms on the hub. When the spool is acted upon, the arms on the spool disengage with the arms on the hub to permit relative rotation of the spool to the hub to feed additional filament into the cutting plane. An indexing feature is used to regulate the amount of additional cutting filament that is allowed to be fed into the cutting plane.Type: GrantFiled: May 14, 2009Date of Patent: May 15, 2012Inventors: Ian J. Doane, James C. Doane
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Publication number: 20120102762Abstract: A cutting element for a hedge trimmer, comprising: a cutting portion (2); an attaching portion (3), associated to the cutting portion (2) and predisposed to enable attachment of the cutting element to a rotating head (10) of a hedge-trimmer; the attaching portion (3) is hook-shaped and comprises an eyelet (31) on which a housing seating (32) is afforded for an attaching pin (12) solidly constrained to the rotating head (10), the housing seating (32) is provided with an opening (33) a maximum width of which is smaller than a diameter of the attaching pin (12); elastic means are predisposed to enable the opening (33) of the housing seating (32) to broaden up to taking on a width which is at least equal to the diameter of the attaching pin (12).Type: ApplicationFiled: October 26, 2011Publication date: May 3, 2012Applicant: TECOMEC S.R.L.Inventor: Enrico CIGARINI
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Publication number: 20120079726Abstract: A power operated knife comprises a blade supporting structure supporting an annular blade for rotation about a central axis. The blade and blade supporting structure are engagable along bearing contact locations that are spaced apart in a direction parallel to the axis so that the blade is stabilized both radially and axially as the knife operates. The blade supporting structure comprises a split blade housing member that is radially expandable and contractible to receive the blade. The split blade housing member and blade engage along relatively short lines of bearing contact that serve to minimize friction and blade heating when the knife operates. The bearing locations are spaced apart both circumferentially around the blade perimeter and in the direction of the axis so that the blade position is stabilized during operation of the knife.Type: ApplicationFiled: December 8, 2011Publication date: April 5, 2012Applicant: BETTCHER INDUSTRIES, INC.Inventor: Jeffrey A. WHITED
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Publication number: 20120066915Abstract: A trimmer head assembly for use on a vegetation cutting machine. The trimmer head assembly has a housing. The housing has a top surface, bottom surface, and at least two recessed areas there between. Pivot posts are disposed within each of the recessed areas. An anchor disc is disposed around each pivot post. The anchor disc is free to rotate around the pivot post within a range. Each anchor disc has two trimmer line channels extending through it. The two trimmer line channels are joined by an open edge groove that runs along one edge. A length of trimmer line is provided for each anchor disc. Each length of trimmer line has a first end that extends through the first of the trimmer line channels, a second end that extends through the second of the trimmer line channels and a bend that seats in the open edge groove.Type: ApplicationFiled: September 20, 2011Publication date: March 22, 2012Inventor: George E. Alliss
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Publication number: 20120066913Abstract: An automatic-feed trimmer head for a vegetation trimming machine. A spool is positioned within the interior of a housing. A cam guide formation is disposed atop the top flange of the spool. The cam guide formation defines a pathway. A cam arm is provided that is mounted to the housing with a pivot connection. The cam arm has a cam projection that extends into the pathway. A spring is provided that biases the cam arm into a first orientation. In the first orientation, the shape of the pathway enables the cam projection to move only in a first direction. The cam arm moves about the pivot connection from its first orientation to a second orientation when the trimmer head assembly is rotated above a predetermined rotational speed. When the cam arm is in its second orientation trimmer line is unwound from the spool.Type: ApplicationFiled: September 20, 2011Publication date: March 22, 2012Inventors: George E. Alliss, Steven W. Hamblin
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Publication number: 20120066912Abstract: A trimmer and a trimmer head for use with the trimmer, the trimmer head including a body rotatable about an axis, the body defining a plurality of axially spaced channels each sized to receive at least a portion of a trimmer line therein, and a clamping mechanism in operable communication with at least two of the axially spaced channels to selectively retain a trimmer line positioned within any one of the at least two axially spaced channels. The trimmer head may include a wear disk pivotable relative to the trimmer head body. In addition, a release button of the clamping mechanism may be arranged on the body to provide additional clamping force when the trimmer head rotates about the axis.Type: ApplicationFiled: September 16, 2011Publication date: March 22, 2012Inventors: James C. Ferrell, William E. Colber, Benjamin E. Montgomery
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Patent number: 8117756Abstract: A bush cutter for performing weed-cutting operations while suspended from the shoulders of an operator. The bush cutter is provided with an operating rod and an operating handle, which is provided midway along the operating rod in the longitudinal direction. The rearward rod-half of the operating rod between the operating handle and a motor has a curved part that curves laterally.Type: GrantFiled: October 15, 2008Date of Patent: February 21, 2012Assignee: Honda Motor Co., Ltd.Inventors: Tomomi Nakaya, Hiromi Yuzuriha
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Publication number: 20120030952Abstract: A powered rotary knife includes a handle, a blade housing, an annular blade, and a blade bushing for rotatably mounting the blade within the housing. The blade housing includes an inner groove that is operable to receive the blade bushing therein. The blade housing and blade bushing are split in order to expand and receive the blade. The blade includes an outer groove that is also operable to receive the blade bushing. Thus, the blade bushing is spaced between the blade housing and blade and rotatably secures the blade within the blade housing.Type: ApplicationFiled: October 18, 2011Publication date: February 9, 2012Applicant: Hantover, Inc.Inventor: Clark A. Levsen
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Publication number: 20120000079Abstract: A grass-cutting head (10) comprising a spool (11) for winding at least one cutting line and a housing (12) for the cutting line, wherein said housing (12) comprises a first part (13) and a second part (14) coupled to each other so as to allow at least one reciprocal angular movement around the axis (X) of rotation of the grass-cutting head. The housing (12) presents at least one passage (31) towards the outside for the cutting line. On the spool (11) is defined at least one inserting portion (33) for inserting the cutting line so that to a rotation of the spool corresponds a winding or an unwinding of the line. Means (25, 26, 27, 28, 29) are furthermore present for winding the cutting line on the spool (11) and matching means (35, 36) for matching the angular position of the portion (33) of insertion on the spool (11) with said passage towards the outside (31) of the housing, suitable to facilitate the operations of inserting the cutting line in the spool (11).Type: ApplicationFiled: February 19, 2010Publication date: January 5, 2012Inventor: Fabrizio Arnetoli
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Publication number: 20110314681Abstract: The present application provides a work head for a rotational brush cutter. The work head comprises an upper plate, a lower plate and a blade, the upper plate and the lower plate being fixedly coupled. The lower plate is circular and has a passage therethrough with a gear arranged in the passage. The blade has a body portion and a connection portion with the body portion able to be extended outside of the upper and lower plates. The through passage is designed so that the blade can be replaced without requiring the upper plate and lower plate to be disassembled. As a result, because the blade is not restricted by a narrow space between the upper plate and the main frame, the work head does not need to be removed from the brush cutter to replace the blade thereby saving time and effort.Type: ApplicationFiled: June 20, 2011Publication date: December 29, 2011Inventors: Toshinari Yamaoka, Fangjie Nie, Chao Meng
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Publication number: 20110302791Abstract: An aerodynamic trimmer head assembly for use in flexible line rotary trimmers including a trimmer head having a curvilinear upper head surface and a shroud having a curvilinear portion extending over the head surface. A plurality of ribs extend downwardly and forwardly in the direction of rotation between the head surface and shroud defining a plurality of channels extending between portions of the upper head surface and shroud along curvilinear paths defined by the ribs. The channels define inlet openings in an upper portion of the shroud and outlet openings about the lower end portion thereof. During rotation of the head and shroud, air is drawn downwardly about the drive mechanism, through the channel inlets, into and through the channels and outwardly therefrom at a forward inclination about the line projecting from the housing thereby cooling the drive mechanism of the rotary trimmer and reducing aerodynamic drag on the line.Type: ApplicationFiled: August 24, 2011Publication date: December 15, 2011Applicant: PROULX MANUFACTURING, INC.Inventors: Richard A. Proulx, James R. Pfaltzgraff
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Publication number: 20110302793Abstract: A trimmer head assembly for a trimming machine. The trimmer head assembly includes a spool. The spool has a central tubular hub. The spool also has a central flange that radially extends from the hub. A trim line conduit is joined to the central flange. The trim line conduit has a first open end. The first open end leads to a first straight section. The first straight section leads to a curved central section. The curved central section leads to a second straight section. The second straight section leads to a second open end. The curved central section passes around the center of the spool. A housing is provided that receives the spool therein. When loading trimmer line into the trimmer head assembly, the shape of the conduit enables the trimmer line to pass around the central opening in the spool without binding.Type: ApplicationFiled: August 19, 2011Publication date: December 15, 2011Inventor: George E. Alliss
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Patent number: 8069758Abstract: A head section for a rotary cutting device includes a body portion that includes a blade passage defined between a blade entrance opening and a blade exit opening. A blade fastening mechanism is positioned in the blade passage and includes a blade engaging member. The blade engaging member is biased by a biasing mechanism to extend across the blade passage at a blade install position. The blade engaging member is movable against the bias to clear the blade passage. A blade having a mount aperture proximate an insertion end thereof is secured to the body portion when the mount aperture occupies the blade mount position and the blade engaging member extends through the mount aperture. The blade can be installed in and removed from the head section without tools, simply by advancing the blade through the blade passage.Type: GrantFiled: March 4, 2008Date of Patent: December 6, 2011Assignee: Shakespeare Company, LLCInventors: Jack Zhang, George King