Patents Assigned to Shivvers, Inc.
  • Patent number: 6923389
    Abstract: A grain spreader includes a vertical shaft, a receiver for receiving the grain and distributing the grain to a diverter that is rotatably mounted on the shaft with an outlet that is eccentrically positioned relative to the shaft, and a spreader pan that receives the grain form the distributer. The spreader pan is mounted to rotate on the shaft beneath the diverter. The diverter and the spreader pan are rotated by controllable motors so that the diverter can be stopped and the rotational speed of the spreader pan can be varied. The spreader pan has a bottom base and a series of varying length vanes that are vertically and radially aligned on the base to operably engage the grain and spread the grain within a bin or the like. The lengths of the vanes are preferably determined by a formula. In certain embodiments the spreader pan may have an opening to allow grain to pass through the pan without engaging the base so as to fill the center of a bin more evenly.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: August 2, 2005
    Assignee: Shivvers, Inc.
    Inventor: Steve D. Shivvers
  • Patent number: 5816035
    Abstract: A front mounted mower deck includes a mounting and support assembly for operably joining the deck to a motorized vehicle. The mounting and support assembly includes a pair of pusher bars swivelly attached at one end to the deck and at the opposite end to the vehicle. A hanger is pivotally mounted on each pusher bar and includes a slot which receives a slot follower mounted on the deck to allow articulation from side to side by movement of the slot followers in the slots. Each hanger is biased to maintain an associated slot follower in the slot therefor. However, the hanger can be manually manipulated to overcome the biasing force so that the slot followers are released from the slots, thereby allowing the deck to be rotated about the connection with the pusher bars to provide for cleaning, maintenance, etc.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: October 6, 1998
    Assignee: Shivvers, Inc.
    Inventor: Scott Schick
  • Patent number: 5778648
    Abstract: A mower clipping collection system for a riding mower comprises a collector housing having an interior collection chamber and having an interior cylindrical wall forming a cylindrical separation chamber positioned above and in communication with the collection chamber. A clipping transfer conduit extends from the mower deck and is mounted tangentially with respect to the cylindrical wall of the collector housing such that mower clippings, entrained in a stream of air exiting the mower, are blown tangentially into the separation chamber through an opening in the cylindrical wall. The collector housing includes a floor which slopes downward to a clipping dump opening extending across a rear side of the housing. A door is pivotally mounted to the collector housing across the clipping dump opening and moveable in and out of covering relationship therewith by a door operating assembly engageable by an operator while seated on the mower.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: July 14, 1998
    Assignee: Shivvers, Inc.
    Inventors: Donald H. Parkes, Scott A. Schick
  • Patent number: 5669841
    Abstract: A belt tensioner for a twisted belt that tends to elongate during usage includes a tensioning pulley for operably engaging the twisted belt, a carrier for the pulley pivotally connected to a frame, a tensioning device for applying continuous force to the tensioning pulley carrier so as to tension the belt, and an unidirectional locking mechanism that allows the carrier to swing in only one direction and not in a reverse direction.
    Type: Grant
    Filed: January 18, 1996
    Date of Patent: September 23, 1997
    Assignee: Shivvers, Inc.
    Inventor: Scott Schick
  • Patent number: 5131483
    Abstract: A single lever control is disclosed. The single lever control comprises a lever, a lever mount, and a control rod having first and second ends, the lever is attached to the lever mount and the control rod and the lever is movable in a first plane about any axis and causes both tandem and reciprocal movement of said first and second control rod ends with respect to one another in response to movement of the lever.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: July 21, 1992
    Assignee: Shivvers, Inc.
    Inventor: Donald H. Parkes
  • Patent number: 4896506
    Abstract: A vehicle includes at least a pair of drive wheels, each wheel being independently controlled by an integrated transmission, each transmission being powered by an input shaft operably driven by a common engine. Each transmission is of a type wherein a pump head with pistons is driven by the input shaft and conveys output fluid to a motor head which is driven thereby and rotates an output shaft. Pump head output is controlled by an operator variable swash plate. The transmission integrally includes a dampening mechanism for the swash plate, a positive neutral structure for the swash plate, an automatic parking brake with override mechanism to allow setting of the brake or release of the brake by the operator, a porting block communicating fluid flow between the pump heads and providing for overpressure relief, and a charge pump for communicating makeup fluid to the pump head and to circulate the fluid so as to cool same.
    Type: Grant
    Filed: November 18, 1987
    Date of Patent: January 30, 1990
    Assignee: Shivvers, Inc.
    Inventors: Charles C. Shivvers, Steven D. Shivvers, Richard A. Arnold, Edward A. Ryks
  • Patent number: 4845949
    Abstract: A vehicle includes at least a pair of drive wheels, each wheel being independently controlled by an integrated transmission, each transmission being powered by an input shaft operably driven by a common engine. Each transmission is of a type wherein a pump head with pistons is driven by the input shaft and conveys output fluid to a motor head which is driven thereby and rotates and output shaft. Pump head output is controlled by an operator variable swash plate. The transmission integrally includes a dampening mechanism for the swash plate, a positive neutral structure for the swash plate, an automatic parking brake with override mechanism to allow setting of the brake or release of the brake by the operator, a porting block communicating fluid flow between the pump heads and providing for overpressure relief, and a charge pump for communicating makeup fluid to the pump head and to circulate the fluid so as to cool same.
    Type: Grant
    Filed: November 18, 1987
    Date of Patent: July 11, 1989
    Assignee: Shivvers, Inc.
    Inventors: Charles C. Shivvers, Steven D. Shivvers, Richard A. Arnold, Edward A. Ryks
  • Patent number: 4843817
    Abstract: A vehicle includes at least a pair of drive wheels, each wheel being independently controlled by an integrated transmission, each transmission being powered by an input shaft operably driven by a common engine. Each transmission is of a type wherein a pump head with pistons is driven by the input shaft and conveys output fluid to a motor head which is driven thereby and rotates an output shaft. Pump head output is controlled by an operator variable swash plate. The transmission integrally includes a dampening mechanism for the swash plate, a positive neutral structure for the swash plate, an automatic parking brake with override mechanism to allow setting of the brake or release of the brake by the operator, a porting block communicating fluid flow between the pump heads and providing for overpressure relief, and a charge pump for communicating makeup fluid to the pump head and to circulate the fluid so as to cool same.
    Type: Grant
    Filed: November 18, 1987
    Date of Patent: July 4, 1989
    Assignee: Shivvers, Inc.
    Inventors: Charles C. Shivvers, Steven D. Shivvers, Richard A. Arnold, Edward A. Ryks
  • Patent number: 4750273
    Abstract: A computer controlled grain dryer system includes a grain drying chamber, an air heater unit, and an arrangement of grain loading and unloading conveyors. A grain moisture sampling system receives a grain sample from the grain chamber and conveys the sample to a capacitive sample cell. A grain moisture meter measures grain moisture content as a function of the dielectric constant of the sample in the cell. A digital computer is interfaced with the moisture meter and the grain conveyor and is programmed to automatically control the grain sampling and the drying process. In continuous crossflow and concurrent flow dryers, the drying process is controlled by controlling the speed of grain flow. In batch type dryers, the process is controlled by way of the time that the grain is present in the drying chamber.
    Type: Grant
    Filed: July 14, 1986
    Date of Patent: June 14, 1988
    Assignee: Shivvers Inc.
    Inventors: Donald H. Parkes, Steven D. Shivvers