All Reciprocating Patents (Class 56/236)
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Patent number: 10464196Abstract: A board fastening tool has a tool body and a driver having contiguous drive elements mounted in the body. A top element is mounted to slide in vertical track when hit from above. A bottom element is mounted to drive a fastener diagonally out of the body and into a board to fix the board to the floor. The top and bottom elements are connected by a spring steel ribbon device sliding in a curved track so that vertical movement of the top element is converted to diagonal movement of the bottom element. The spring steel ribbon device has a pair of spring steel ribbons joined to each other at respective ends thereof and separate from each other over an intermediate region.Type: GrantFiled: November 16, 2016Date of Patent: November 5, 2019Inventor: Patrick Hale
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Patent number: 7652438Abstract: 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: GrantFiled: December 18, 2007Date of Patent: January 26, 2010Assignee: Andreas Stihl AG & Co KGInventor: Heiko Rosskamp
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Patent number: 7406770Abstract: A trimmer having first and second cutting blades. The first and second cutting blades are mounted so that first and second flat surfaces, respectively thereon, face and are substantially parallel to each other. A drive causes at least one of the first and second cutting blades to move relative to the other of the first and second cutting blades. At least one fastening assembly has first and second facing shoulders between which the first and second cutting blades reside. The at least one fastening assembly further has at least one biasing element that produces a force that biasably urges the first and second flat cutting blade surfaces towards each other.Type: GrantFiled: January 25, 2006Date of Patent: August 5, 2008Inventors: William Bradley Mace, Ronald A. Carlson
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Patent number: 7204072Abstract: A mechanical pruner has a hinged trimming head that allows the trimming of grape vines growing on sloped ground. The trimming head has hedgers with forward facing cutting teeth and rotating combers that open up the grape vine canopy and pull the vines into the cutting path. By also allowing for multiple adjustments in the height of the pruner, lateral position of the trimming head, lateral position of the hedger relative to the trimming head, and both the lateral and vertical positions of the combers relative to the trimming head, the mechanical pruner provides a user with significant control over the trimming of grapevines.Type: GrantFiled: July 14, 2004Date of Patent: April 17, 2007Assignee: National Grape Cooperative, Inc.Inventors: James Joy, James Bedient
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Patent number: 6698177Abstract: A cam mechanism for use in a mowing machine. The cam mechanism is comprised of a spur gear and protruding eccentric cams from the top and bottom surfaces of the spur gear. The cam mechanism is formed from a half blanking press process. The eccentric cams are symmetrically formed around a shaft hole located in the center of the spur gear. Members with a hole equaling that of the eccentric cam and shaft hole point symmetry are then fitted onto the eccentric cam. The members are then capable of reciprocation with a phase differential of 180 degrees of each other. The concave portion of the eccentric cam permits lubricants to be filled in the space facilitating the smooth operation of the cam mechanism.Type: GrantFiled: January 28, 2000Date of Patent: March 2, 2004Assignees: Delta Kogyo Co, LTD, Shin-Daiwa Kogyo Co., LTDInventors: Youso Akehi, Fumio Nomura
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Patent number: 5881543Abstract: A guard assembly (2) is used to protect the cutter blades (20, 21) of a cane cutter (10). The guard assembly includes a guard body (4) which is mounted to the cane cutter. A series of guard blades (6) are pivotally mounted to the guard body. The guard blades are shaped, sized and positioned to permit smaller diameter objects, such as a cane (18) of a grapevine to pass between the guard blades so to be severed by the cutter blades while preventing larger diameter objects, such as posts (26), stakes and the trunks of the grapevines, from passing between the guard blades, thereby protecting both the cutter blades and the larger diameter objects from damage.Type: GrantFiled: February 7, 1997Date of Patent: March 16, 1999Assignee: Sun-Maid Growers of CaliforniaInventor: Ray S. Austin, Jr.
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Patent number: 5778649Abstract: A power-driven hedge trimmer includes an engine housing (10) which is attached to a base (11) having a cutting tool (12) and a front handle (13) at one end and a rear handle (14) including a gas control (17) at its other end. The rear handle is rotatable relative to the base to enable adjustment to different operating positions. The axis of rotation of the rear handle is inclined at an angle of about 25.degree. relative to the longitudinal axis of the cutting tool (12). The rear handle can be latched in three predetermined operating positions by a latch device (19, 21, 22, 24). The gas control is connected to a rotatable pawl (19) cooperating with the latch device in order to prevent releasing thereof during actuation of the gas control and to prevent actuation of the gas control during adjustment of the rear handle.Type: GrantFiled: September 11, 1996Date of Patent: July 14, 1998Assignee: Aktiebolaget ElectroluxInventors: Claes Losdahl, Stefan Stark, Richard Skogward
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Patent number: 5070685Abstract: A wheeled carriage for supporting a portable hedge trimmer for use as a ground foliage mower. The carriage includes a frame for supporting the hedge trimmer motor chassis and a bar extending laterally of the frame for releasably securing the hedge trimmer cutting blade in a generally horizontal orientation close to the ground surface.Type: GrantFiled: February 6, 1991Date of Patent: December 10, 1991Inventor: Edward R. Galt
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Patent number: 5048277Abstract: A hedge trimmer provided with a deflector which deflects, gathers, and rolls forwardly together and simultaneously materials cut by the trimmer in the direction of the sweep of the trimmer.Type: GrantFiled: August 2, 1990Date of Patent: September 17, 1991Inventors: Joseph Trimarco, John DeBenedittis
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Patent number: 5031395Abstract: A contra reciprocating blade type trimmer having blades formed on the side and tip of a reciprocally driven cutting bar. The tip blade of each bar reciprocates with respect to each other to cooperate in cutting roots, limbs and the like. the tip blade is provided at the foremost tip of each bar.Type: GrantFiled: January 23, 1990Date of Patent: July 16, 1991Assignee: Kioritz CorporationInventors: Masao Ohkanda, Takeshi Tanaka
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Patent number: 4383401Abstract: A twin mounted double sided reciprocating shaping mechanism is provided which is formed in the shape of an acute isosceles triangle whereby the bottom is opened to the ground and each cutting mechanism is bent or deformed along the longitudinal axis to form to a conical shape when rotated about the center axis of the isosceles triangle. The twin mounted double sided reciprocating shaping mechanism is adapted to be used for cutting and shaping and forming trees, bushes and the like in the contour of a cone. Sets of cutting and shaping elements are suspended from a frame, and wherein the cutter and shaping elements can shape trees and the like in the form of a cone.Type: GrantFiled: October 30, 1981Date of Patent: May 17, 1983Assignee: Christmas Trees, Ltd.Inventors: Kenneth R. Lessard, John M. McElrath, Jr.