Patents by Inventor John L. Johnson, Jr.

John L. Johnson, Jr. 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).

  • Patent number: 5720249
    Abstract: The present invention relates generally to an engine control system, and more particularly to an engine control system that decreases the amount of waste oil that must be disposed of in an internal combustion engine by automatically burning spent oil based upon engine speed.
    Type: Grant
    Filed: November 5, 1996
    Date of Patent: February 24, 1998
    Assignee: Caterpillar Inc.
    Inventors: Edward H. Betts, David M. Erickson, John L. Johnson, Jr., Charles J. Kocian, Robert L. Weber
  • Patent number: 5507261
    Abstract: An on/off compression braking system is provided which when actuated controllably opens one inlet valve and one outlet valve in response to the actuation of the injector unit rocker arm and deactivates the exhaust valve rocker arm. This braking system thereby is useful on four cycle engines and is of a construction which eliminates elements of heretofore utilized compression braking systems and provides a four cycle engine with a two cycle compression braking system.
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: April 16, 1996
    Assignee: Caterpillar Inc.
    Inventor: John L. Johnson, Jr.
  • Patent number: 5495838
    Abstract: A compression braking system is provided which controllably opens one inlet valve and one outlet valve in response to the actuation of the injector unit rocker arm. This braking system thereby is useful on four cycle engines and is of a construction which eliminates elements of heretofore utilized compression braking systems.
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: March 5, 1996
    Assignee: Caterpillar Inc.
    Inventor: John L. Johnson, Jr.
  • Patent number: 5347968
    Abstract: Air compression systems for internal combustion engines are utilizing an integral part of the engine to produce the compressed air necessary for operating the brakes of a vehicle. The ability to produce compressed air from an integral part of the engine is important in order to reduce the cost and weight associated with the engine and to increase performance capability and reliability. The integral air compression system includes a valve means associated with one of a plurality of combustion chambers. A housing is connected to a cylinder head and has first and second bore. A master piston is disposed within the first bore to define a first oil chamber. A slave piston is disposed within the second bore to define a second oil chamber. A means fluidly connects the first and second oil chambers. The master piston is forced toward the first oil chamber when another one of the combustion chambers is in the exhaust stroke.
    Type: Grant
    Filed: May 24, 1993
    Date of Patent: September 20, 1994
    Assignee: Caterpillar Inc.
    Inventor: John L. Johnson, Jr.
  • Patent number: 4905303
    Abstract: A converter to convert audio signal associated with commercial television transmissions for input into conventional AM/FM automobile receivers so as to facilitate listening to the audio portions of telecasts on conventional radios.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: February 27, 1990
    Inventors: John L. Johnson, Jr., Robert J. Pitre
  • Patent number: 4206726
    Abstract: A reciprocating engine including a block having at least one cylinder therein, a piston reciprocally received in the cylinder and having a crown, a depending skirt and a ring-receiving groove on the skirt near the crown. The piston has a central cavity terminating near the crown and a coolant-receiving passage in heat exchange relationship to the groove. A nozzle is stationarily mounted on the engine and has first and second jets, the first jet directing coolant to the cavity and the second jet directing coolant to the coolant-receiving passage, both for all operating positions of the piston within the cylinder. A filtered oil supply for the nozzle is provided.
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: June 10, 1980
    Assignee: Caterpillar Tractor Co.
    Inventors: John L. Johnson, Jr., Robert M. Vize, Noel D. Wiggins
  • Patent number: 4175801
    Abstract: A bearing has a body, a surface and a tab extending from the body. The tab is of a construction sufficient for insertion of the bearing into a preselected cavity of preselected configuration defined by first and second members only with the bearing surface oriented in a preselected direction.
    Type: Grant
    Filed: August 2, 1978
    Date of Patent: November 27, 1979
    Assignee: Caterpillar Tractor Co.
    Inventors: Donald A. Coil, John L. Johnson, Jr., Horace J. Swinland