Patents Assigned to Hyrum T. Jarvis
  • Patent number: 5875863
    Abstract: The power system for extending the effective range of an electrical vehicle including a non-polluting power generating mechanism for recharging the battery system during vehicle use and providing sufficient electrical energy to an electric motor for constant speed cruising without draining the battery system. The additional power needed for acceleration and hill climbing is provided by a temporary draw on the battery system, and by an increase in the RPM of the heat engine when needed. When the need for additional power is over, the power generating mechanism again recharges the battery system while it provides the energy necessary for continued steady state operation. The power generating mechanism comprises a non-polluting heat engine which is mechanically coupled to an alternator or a generator and a control network for controlling the heat engine and selectively directing the electrical energy generated by the heat engine to the vehicle's electric motor and/or battery supply.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: March 2, 1999
    Assignee: Hyrum T. Jarvis
    Inventors: Hyrum T. Jarvis, Conrad Hulme
  • Patent number: 5782084
    Abstract: A Stirling cycle engine and drive mechanism therefor which may be configured in a Beta, Alpha or Gamma configuration for providing increased power output. The drive mechanism provides a dwell of the displacer piston at its top and/or bottom dead center positions of the displacer stroke. The drive mechanism includes adjustable regulatory linkages in order to adjust the dwell and stroke of the displacer piston as well as the phase angle between the displacer and power pistons.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 21, 1998
    Assignee: Hyrum T. Jarvis
    Inventor: Hy T. Jarvis