Patents by Inventor C. Paul Kolthoff, Jr.

C. Paul Kolthoff, 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).

  • Heat exchange apparatus including a toroidal-type radiator
    Patent number: 4184541
    Abstract: Heat exchange apparatus including a toroidal-type radiator having radially extending cooling air passageways formed through the core thereof, a rotary fan positioned radially inwardly of the radiator core, fan shroud means shaped and positioned with respect to the radiator core and the blades of the fan whereby the air stream induced by the fan during operation has a major component in a radial direction, and air recirculation barrier means for substantially eliminating the recirculation of air at the hub region of the fan.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: January 22, 1980
    Assignee: International Harvester Company
    Inventors: Harold D. Beck, C. Paul Kolthoff, Jr.
  • Heat exchange apparatus including a toroidal-type radiator
    Patent number: 4180130
    Abstract: Heat exchange apparatus including a toroidal-type radiator having radially extending cooling air passage-ways formed through the core thereof, a rotary fan positioned radially inwardly of the radiator core, fan shroud means shaped and positioned with respect to the radiator core and the blades of the fan whereby the air stream induced by the fan during operation has a major component in a radial direction, and an auxiliary radiator structure axially spaced from the rotary fan.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: December 25, 1979
    Assignee: International Harvester Company
    Inventors: Harold D. Beck, C. Paul Kolthoff, Jr.
  • Heat exchange apparatus including a toroidal-type radiator
    Patent number: 4136735
    Abstract: Heat exchange apparatus including a toroidal-type radiator having radially extending cooling air passage-ways formed through the core thereof, a rotary fan positioned radially inwardly of the radiator core, and fan shroud means shaped and positioned with respect to the radiator core and the blades of the fan whereby the air stream induced by the fan during operation has a major component in a radial direction.
    Type: Grant
    Filed: October 1, 1976
    Date of Patent: January 30, 1979
    Assignee: International Harvester Company
    Inventors: Harold D. Beck, C. Paul Kolthoff, Jr.
  • Two stage operation for radiator
    Patent number: 3990504
    Abstract: The invention disclosed in this application relates to an improvement in a water cooling system for an engine of the type that passes air and water through the radiator at relatively low flow rates whenever the engine is running in its low idle speed condition. The radiator is disclosed as having upper and lower headers interconnected by a plurality of parallel extending rows of water tubes. A means responsive to the engine speed is provided for converting the water flow through the water tubes from a plurality of parallel paths to a single series path upon the engine speed dropping to its low idle speed condition.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: November 9, 1976
    Assignee: International Harvester Company
    Inventor: C. Paul Kolthoff, Jr.
  • Fan for combine
    Patent number: T993003
    Abstract: A cross flow blower unit for use in a grain cleaning system of a self-propelled combine harvester. The rotor of the blower unit doubles as a rotary heat exchanger for use in the engine coolant system and furnishes a heated air stream to the grain cleaning system for drying and removing moisture from the kernels of grain undergoing cleaning treatment therein.
    Type: Grant
    Filed: January 17, 1979
    Date of Patent: April 1, 1980
    Assignee: International Harvester Company
    Inventor: C. Paul Kolthoff, Jr.