Patents by Inventor Jonathan M. Lauter

Jonathan M. Lauter has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Pressure assisted apex seal with stepped slot
    Patent number: 5123820
    Abstract: A rotary internal combustion engine includes a rotor with apex seals installed in slots which extend axially through apexes of the rotor. Each slot has stepped side walls which define an inner narrower slot portion and an outer wider slot portion. The portion are joined by a pair of outwardly facing ledges on both sides of the slot. Each apex seal has a outer head which includes a pair of overhanging or cantilevered lips. The width of the overhang is slightly larger than the width of the ledges so that seal-slot contact is made near the outer seal tip.
    Type: Grant
    Filed: July 31, 1990
    Date of Patent: June 23, 1992
    Assignee: John Deere Technologies, International, Inc.
    Inventor: Jonathan M. Lauter
  • Apex seal with filled aperture
    Patent number: 4931001
    Abstract: A rotary internal combustion engine includes a rotor with apex seals installed in slots which extend axially through apexes of the rotor. Each apex seal includes at least one passage which extends therethrough in a circumferential direction to equalize gas pressure on opposite sides of the apex seal. An insert formed out of a low friction material is loosely received in each passage to reduce the volume exposed to gas pressure.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: June 5, 1990
    Assignee: Deere & Company
    Inventor: Jonathan M. Lauter