Patents by Inventor Michael N. Mantooth

Michael N. Mantooth 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).

  • Multi-refrigerant compressor
    Patent number: 5591011
    Abstract: The oil sump and suction plenum of a hermetic compressor are in continuous fluid communication through an oil equalization port assembly. Additionally, communication is established between the oil sump and the suction plenum if pressure in the oil sump is greater than that in the suction plenum by more than a few pounds. Multiplexing is established through a port in the suction plenum.
    Type: Grant
    Filed: September 18, 1995
    Date of Patent: January 7, 1997
    Assignee: Carrier Corporation
    Inventors: Michael N. Mantooth, Kevin D. Williams, Bruce A. Fraser
  • Reverse drive oil pump
    Patent number: 5476373
    Abstract: Lubricant is pumped into a lubrication system by an oil pump. Preferably the lubricant is drawn into the pump from an unagitated source. An eccentric pump rotor is received on the crankshaft and has a circumferentially extending recess. A radially extending drive pin is secured in the crankshaft and coacts with the ends of the recess to position the rotor in accordance with the direction of rotation of the shaft.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: December 19, 1995
    Assignee: Carrier Corporation
    Inventors: Michael N. Mantooth, Fadi S. Maalouf, Fredric A. Ensworth, Martin C. Bezon
  • Reed valve with tapered leg and dual radius valve stop
    Patent number: 5421368
    Abstract: The profile of the valve stop of a discharge valve is configured such that the portion facing the free length of the valve member has a first fixed radius portion and a second, larger fixed radius portion. The valve has a leg portion and a valve head with said leg portion tapering and widening in the direction of the valve head so as to have an increasing spring rate.
    Type: Grant
    Filed: September 2, 1994
    Date of Patent: June 6, 1995
    Assignee: Carrier Corporation
    Inventors: Fadi S. Maalouf, Michael N. Mantooth
  • Dual radius valve stop
    Patent number: 5396930
    Abstract: The profile of the valve stop of a discharge valve is configured such that the portion facing the free length of the valve member has a first fixed radius portion and a second, larger fixed radius portion. The first and second fixed radius portions are tangent at their transition.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: March 14, 1995
    Assignee: Carrier Corporation
    Inventors: David M. Ebbing, Michael N. Mantooth