Patents Assigned to Robert D. Hall
  • Valveless two-stroke-cycle oscillating engine
    Patent number: 5228414
    Abstract: A two-stroke-cycle engine has a pivoted divider oscillating within a fan-shaped combustion volume. The divider is connected to a connecting rod which is connected to an output crankshaft. Seals are used instead of piston rings. Each of the two radial walls has a spark plug and a fuel injection tube located near the outer end. Each planar parallel side wall has an air inlet port near the inner end. An exhaust port is located in the center of the arcuate wall.
    Type: Grant
    Filed: September 10, 1992
    Date of Patent: July 20, 1993
    Assignee: Robert D. Hall
    Inventor: Jimmye Crawford