And Rotary Excavating Tool Patents (Class 37/238)
  • Patent number: 10113281
    Abstract: An impeller assembly for a snowthrower includes a driven shaft configured to rotate about an axis, a flexible impeller configured to rotate about the axis and extending horizontally across substantially a complete width of the impeller assembly parallel to the axis, and a rigid cutting implement. The flexible impeller extends radially from the driven shaft to an impeller radial distance. The rigid cutting implement extends radially from the driven shaft to a cutting implement radial distance less than the impeller radial distance, wherein the rigid cutting implement is spaced apart from and does not contact the flexible impeller.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: October 30, 2018
    Assignee: Briggs & Stratton Corporation
    Inventors: Richard J. Gilpatrick, John E. Gulke, Peter Jerger, Christopher M. Fisher
  • Patent number: 8176662
    Abstract: A digging system includes a machine having a machine frame, and an implement assembly mounted to the machine frame. The implement assembly includes an elongate boom and a trenching mechanism having a plurality of drawing cutters coupled with an endless drive chain movable about a drive system mounted to an elongate boom. The implement assembly further includes an undercutting mechanism having first and second rotating cutters projecting in opposite axial directions from the distal boom end. The implement assembly defines a compound projection profile in a plane which includes first and second axes of rotation of a drive wheel and guide wheel of the drive system. The compound projection profile includes a relatively narrow proximal stem segment corresponding to the trenching mechanism and a relatively broad distal footing segment corresponding to the undercutting mechanism.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: May 15, 2012
    Inventor: Larry William Peterson
  • Patent number: 7730642
    Abstract: An engine of a snow blower is arranged with a crankshaft along a front to rear direction of the snow blower, and an output shaft, with an outer circumferential portion on which a drive pulley is fixed, is provided in a front end portion of the crankshaft. Further, an intermediate shaft with a rear end circumference on which a driven pulley is fixed and with a front end circumference, on which an impeller drive pulley is fixed, is arranged to extend toward a front direction higher than the output shaft. An impeller drive shaft with a rear end circumference on which an impeller driven pulley is fixed is arranged to extend toward the front direction more downward than the intermediate shaft. A first transmission belt is meshed with the drive pulley and the driven pulley, and a second transmission belt is meshed with the impeller drive pulley and the impeller driven pulley. Using this arrangement, it is possible to provide a snow blower with a low center of gravity.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: June 8, 2010
    Assignee: Yamaha Motor Power Products Kabushiki Kaisha
    Inventor: Keisuke Sugiura
  • Patent number: 7117952
    Abstract: One embodiment of the present invention pertains to a system, including a mechanical arm, an attachment member, an actuator, a power system, an electronic control, and an operator interface. The attachment member is tiltably mounted on the mechanical arm about a pivot joint. The actuator is operably connected to the attachment member for powering the attachment member to tilt about the pivot joint. The power system is operably connected to the actuator. The electronic control is operatively connected to the power system, and comprises an automatic vibration mechanism for causing the attachment member to vibrate automatically in response to an activation signal. The operator interface is in operable communication with the electronic control. The system comprises a default state and an activation state for causing the activation signal.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: October 10, 2006
    Assignee: Clark Equipment Company
    Inventors: Mark F. Bares, Charles H. Krause
  • Publication number: 20010013181
    Abstract: A snow removal or ground-surface cleaning apparatus that is pushed or pulled by a prime mover. The apparatus has a drum array that includes rows of triple-stepped blade-like fingers distributed evenly around a drum array. These fingers are stiffly flexible and can cleanly and efficiently pick up snow and debris from uneven ground surfaces.
    Type: Application
    Filed: March 30, 2001
    Publication date: August 16, 2001
    Inventor: James C. Monroe
  • Patent number: 6178668
    Abstract: A modular implement apparatus and method of use for securing a snowblower to an all terrain vehicle (ATV) comprises an implement mounted to a first end of the ATV and an engine mounted at a second end. A longitudinal support structure extends between the two ends and supports a drive shaft assembly. The engine provides power to the implement, thus eliminating the need for a PTO shaft. The apparatus is further adapted to permit placement of the apparatus in either a ground-engaging position or a raised, transport position.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: January 30, 2001
    Assignee: Erskine Manufacturing Company, Inc.
    Inventors: Michael W. Gustafson, Timothy K. Radniecki
  • Patent number: 5802745
    Abstract: A hydraulic system used in conjunction with a standard pickup truck and the like for powering a snowblower and other implements. The hydraulic system provides power for controlling up and down movement of a snowblower and for driving the snowblower's auger and fan. The hydraulic system, which only minimally impacts the pickup truck's horsepower output, is designed so that all of its mechanical components may be placed within the truck's engine compartment. The hydraulic system can be easily connected to and removed from a truck's existing engine mount, and the snowblower unit itself is designed so that it may be easily attached to the vehicle.
    Type: Grant
    Filed: September 15, 1995
    Date of Patent: September 8, 1998
    Inventors: Byron Haseotes, Harry Zervas
  • Patent number: 5079865
    Abstract: Apparatus defined by an elongate truck body with a cab and truck bed housing overlying elongate truck frame plate. A forwardly oriented chute with an impeller drive at a forwardmost end of the chute directs snow upwardly through the chute by use of a drive belt into a receiving tank. The receiving tank includes a plurality of heater plates arranged in an angular relationship overlying the tank adjacent the uppermost end of the drive belt. The truck bed includes an auxiliary pump for directing fluid outwardly relative to the tank and further includes a drive motor for driving a generator to operate the heater plates, auxiliary pump, and heater unit positioned rearwardly within the truck bed housing with the heater unit underlying an apertured floor of the truck frame plate to direct heat therethrough to effect completion of snow removal underlying the truck body during its traverse over a road surface to be cleared of snow.
    Type: Grant
    Filed: October 5, 1990
    Date of Patent: January 14, 1992
    Inventor: Bennie L. Hutson
  • Patent number: 4715134
    Abstract: In a rotary snow plough having a feed plough arranged on a side of its housing (2) in order to increase the intake cross section, the accumulation of snow on the ploughshare (8) of the feed plough (4) is avoided by providing, in the ploughshare (8), a belt conveyor element (11) supplying the rotary element(s) of the rotary plough.
    Type: Grant
    Filed: January 24, 1985
    Date of Patent: December 29, 1987
    Assignee: Ing. Alfred Schmidt GmbH
    Inventor: Alfred Schmidt
  • Patent number: 4656762
    Abstract: An ice preparation machine has a snow container, and a conveyor for transporting of snow removed from an ice surface into the snow container and formed as an inclined container including a belt drive provided with driving posts which are arranged centrally between screws transporting the snow.
    Type: Grant
    Filed: May 14, 1985
    Date of Patent: April 14, 1987
    Inventor: Heinrich Schliehe
  • Patent number: 4443958
    Abstract: A means for removal of snow and/or ice from a road or other equivalent area, meant to be attached to a work machine, said means comprising a helical cutter (10) disposed substantially transversally to the direction of travel of the work machine, a drive means (11) for rotating the cutter about its central axis (12), and members (6,7,8) for collecting the material detached by the cutter (10) and for their removal from the ground and transportation onto a load platform (9). The object is to eliminate the drawback encountered in means of this kind that it is not possible with them to remove the snow and ice simultaneously from the carriage-way and pavements and from behind traffis signs, posts and other similar obstacles.
    Type: Grant
    Filed: April 22, 1982
    Date of Patent: April 24, 1984
    Inventor: Veijo E. Huotari
  • Patent number: 4393609
    Abstract: A feeding device comprises a rotary drum (1) in the casing wall (2) of which narrow slots (3, 4) are provided, said slots serving as intakes for the material to be fed. Blade-like elements (5, 6) project from the outside of the casing wall and co-operate with said slots for the purpose of ripping and carrying along material upon rotating of the drum so as to introduce the material into the interior of the drum through the intake slots (3, 4). On the inside of the casing wall (2) flange members (9, 10) are provided for conveying the material introduced into the drum to an outlet opening (8) at one end of the drum. (FIG. 1).
    Type: Grant
    Filed: November 24, 1981
    Date of Patent: July 19, 1983
    Inventor: Arne Persson
  • Patent number: 4114055
    Abstract: The sense circuit includes first and second inverters connected at their inputs to a signal input node and a reference node, respectively. The inverters are selectively biased to different quiescent points for charging the signal input node and the reference node to different quiescent voltage levels. Signals applied to the signal input and reference nodes cause the potential at these nodes to vary from their quiescent values. The inverters are selectively cross-coupled to form a flip flop whose binary value is determined by the outputs of the inverters. For the same value of signals applied to the two nodes the flip flop is set to the state dictated by the initial voltage offset due to the difference in the quiescent points of the inverters.
    Type: Grant
    Filed: May 12, 1977
    Date of Patent: September 12, 1978
    Assignee: RCA Corporation
    Inventor: Richard James Hollingsworth