Patents by Inventor Johnathan P. Roof

Johnathan P. Roof 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: 9856874
    Abstract: A scroll compressor that includes a housing and scroll compressor bodies disposed in the housing. The scroll bodies include a non-orbiting scroll body (also referred to as “fixed”) and a moveable body, where scroll bodies have respective bases and respective scroll ribs that project from the respective bases. The scroll ribs are configured to mutually engage, and the movable scroll body orbits relative to the fixed scroll body for compressing fluid. A pilot ring engages a perimeter surface of the fixed scroll body to limit movement of the fixed scroll body in the radial direction. A simplified holding plate prevents rotation between the pilot ring and the fixed scroll body.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: January 2, 2018
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventors: Johnathan P. Roof, Xianghong Wang, Carl F. Stephens, Christopher Allen Wyker
  • Patent number: 9441631
    Abstract: A suction duct for a compressor such as a scroll compressor may include a plastic ring body with a metal screen heat staked in a window of the ring body to filter refrigerant gas entering the motor cavity. the ring body may be in surrounding relation of the motor and resiliently compressed in the housing through intermittent contact with the inner housing surface to better seal around the inlet port. Oil drain channels and stabilizing ribs may be along the outside surface of the ring body.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: September 13, 2016
    Assignee: Bitzer Kuehlmaschinenbau GmbH
    Inventor: Johnathan P. Roof
  • Patent number: 9322404
    Abstract: A scroll compressor that includes a housing and scroll compressor bodies disposed in the housing as well as a method of operation thereof is provided. The housing is separated into different chambers by a separator. One of the scroll bodies is sealed to the separator with a floating seal arrangement including a seal interface between a floating seal of the floating seal arrangement and a hub of a fixed scroll compressor body. A seal retaining ring prevents axial motion of a seal member of the seal interface during start-up operations due to pressure imbalances across the seal member.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: April 26, 2016
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventors: Johnathan P. Roof, Ronald J. Duppert
  • Publication number: 20160090985
    Abstract: A scroll compressor that includes a housing and scroll compressor bodies disposed in the housing. The scroll bodies include a non-orbiting scroll body (also referred to as “fixed”) and a moveable body, where scroll bodies have respective bases and respective scroll ribs that project from the respective bases. The scroll ribs are configured to mutually engage, and the movable scroll body orbits relative to the fixed scroll body for compressing fluid. A pilot ring engages a perimeter surface of the fixed scroll body to limit movement of the fixed scroll body in the radial direction. A simplified holding plate prevents rotation between the pilot ring and the fixed scroll body.
    Type: Application
    Filed: July 16, 2015
    Publication date: March 31, 2016
    Applicant: BITZER KUEHLMASCHINENBAU GMBH
    Inventors: Johnathan P. Roof, Xianghong Wang, Carl F. Stephens, Christopher Allen Wyker
  • Publication number: 20150211516
    Abstract: A scroll compressor that includes a housing and scroll compressor bodies disposed in the housing as well as a method of operation thereof is provided. The housing is separated into different chambers by a separator. One of the scroll bodies is sealed to the separator with a floating seal arrangement including a seal interface between a floating seal of the floating seal arrangement and a hub of a fixed scroll compressor body. A seal retaining ring prevents axial motion of a seal member of the seal interface during start-up operations due to pressure imbalances across the seal member.
    Type: Application
    Filed: April 3, 2015
    Publication date: July 30, 2015
    Applicant: BITZER KUEHLMASCHINENBAU GMBH
    Inventors: Johnathan P. Roof, Ronald J. Duppert
  • Patent number: 9022758
    Abstract: A scroll compressor that includes a housing and scroll compressor bodies disposed in the housing as well as a method of operation thereof is provided. The housing is separated into different chambers by a separator. One of the scroll bodies is sealed to the separator with a floating seal arrangement including a seal interface between a floating seal of the floating seal arrangement and a hub of a fixed scroll compressor body. A seal retaining ring prevents axial motion of a seal member of the seal interface during start-up operations due to pressure imbalances across the seal member.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: May 5, 2015
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventors: Johnathan P. Roof, Ronald J. Duppert
  • Patent number: 8920139
    Abstract: A suction duct for a compressor such as a scroll compressor may include a plastic ring body with a metal screen heat staked in a window of the ring body to filter refrigerant gas entering the motor cavity. The ring body may be in surrounding relation of the motor and resiliently compressed in the housing through intermittent contact with the inner housing surface to better seal around the inlet port. Oil drain channels and stabilizing ribs may be along the outside surface of the ring body.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: December 30, 2014
    Assignee: Bitzer Kuehlmaschinenbau GmbH
    Inventors: Johnathan P. Roof, Tracy E. Shay
  • Publication number: 20130251575
    Abstract: A scroll compressor that includes a housing and scroll compressor bodies disposed in the housing as well as a method of operation thereof is provided. The housing is separated into different chambers by a separator. One of the scroll bodies is sealed to the separator with a floating seal arrangement including a seal interface between a floating seal of the floating seal arrangement and a hub of a fixed scroll compressor body. A seal retaining ring prevents axial motion of a seal member of the seal interface during start-up operations due to pressure imbalances across the seal member.
    Type: Application
    Filed: March 23, 2012
    Publication date: September 26, 2013
    Applicant: Bitzer Kuehlmaschinenbau GmbH
    Inventors: Johnathan P. Roof, Ronald J. Duppert
  • Publication number: 20130251562
    Abstract: A suction duct for a compressor such as a scroll compressor may include a plastic ring body with a metal screen heat staked in a window of the ring body to filter refrigerant gas entering the motor cavity. The ring body may be in surrounding relation of the motor and resiliently compressed in the housing through intermittent contact with the inner housing surface to better seal around the inlet port. Oil drain channels and stabilizing ribs may be along the outside surface of the ring body.
    Type: Application
    Filed: March 23, 2012
    Publication date: September 26, 2013
    Applicant: Bitzer Kuehlmaschinenbau GmbH
    Inventors: Johnathan P. Roof, Tracy E. Shay
  • Publication number: 20130248022
    Abstract: A suction duct for a compressor such as a scroll compressor may include a plastic ring body with a metal screen heat staked in a window of the ring body to filter refrigerant gas entering the motor cavity. the ring body may be in surrounding relation of the motor and resiliently compressed in the housing through intermittent contact with the inner housing surface to better seal around the inlet port. Oil drain channels and stabilizing ribs may be along the outside surface of the ring body.
    Type: Application
    Filed: March 23, 2012
    Publication date: September 26, 2013
    Applicant: Bitzer Kuehlmaschinenbau GmbH
    Inventor: Johnathan P. Roof
  • Patent number: 8303278
    Abstract: A scroll compressor that utilizes liquid or vapor injection to cool a working fluid being compressed by an orbiting scroll member and a non-orbiting scroll member, and/or to increase the efficiency of the compressor. An injection fitting is secured to, and extends through, the compressor housing and receives liquid or vapor working fluid from a source external to the compressor. The non-orbiting scroll member may be fixedly mounted with respect to the crankcase of the compressor, and internal passages formed within the crankcase and the non-orbiting scroll member, which are substantially isolated from the suction pressure and discharge pressure chambers of the compressor, are used to convey liquid or vapor working fluid from the injection fitting into intermediate pressure working pockets defined between the scroll members.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: November 6, 2012
    Assignee: Tecumseh Products Company
    Inventors: Johnathan P. Roof, Anil Gopinathan, Damanjit Singh
  • Publication number: 20100008807
    Abstract: A scroll compressor that utilizes liquid or vapor injection to cool a working fluid being compressed by an orbiting scroll member and a non-orbiting scroll member, and/or to increase the efficiency of the compressor. An injection fitting is secured to, and extends through, the compressor housing and receives liquid or vapor working fluid from a source external to the compressor. The non-orbiting scroll member may be fixedly mounted with respect to the crankcase of the compressor, and internal passages formed within the crankcase and the non-orbiting scroll member, which are substantially isolated from the suction pressure and discharge pressure chambers of the compressor, are used to convey liquid or vapor working fluid from the injection fitting into intermediate pressure working pockets defined between the scroll members.
    Type: Application
    Filed: July 6, 2009
    Publication date: January 14, 2010
    Applicant: TECUMSEH PRODUCTS COMPANY
    Inventors: Johnathan P. Roof, Anil Gopinathan, Damanjit Singh