Patents by Inventor Christopher John Drury

Christopher John Drury 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).

  • Variable refrigerant flow system
    Patent number: 12158282
    Abstract: An apparatus includes a compressor, a first heat exchanger, a reheater, a first valve, a second heat exchanger, a four-way valve, a cap tube, and a blower. The compressor compresses a refrigerant. The blower moves air proximate the second heat exchanger to the reheater. During a cooling mode of operation, the four-way valve is configured to direct refrigerant from the first heat exchanger to the compressor; the compressor compresses the refrigerant received from the first heat exchanger; and the cap tube is configured to allow refrigerant to bypass the reheater.
    Type: Grant
    Filed: October 18, 2023
    Date of Patent: December 3, 2024
    Assignee: Lennox Industries Inc.
    Inventors: Der-Kai Hung, Lin Lan, Christopher John Drury
  • VARIABLE REFRIGERANT FLOW SYSTEM
    Publication number: 20240044528
    Abstract: An apparatus includes a compressor, a first heat exchanger, a reheater, a first valve, a second heat exchanger, a four-way valve, a cap tube, and a blower. The compressor compresses a refrigerant. The blower moves air proximate the second heat exchanger to the reheater. During a cooling mode of operation, the four-way valve is configured to direct refrigerant from the first heat exchanger to the compressor; the compressor compresses the refrigerant received from the first heat exchanger; and the cap tube is configured to allow refrigerant to bypass the reheater.
    Type: Application
    Filed: October 18, 2023
    Publication date: February 8, 2024
    Inventors: Der-Kai Hung, Lin Lan, Christopher John Drury
  • Variable refrigerant flow system with reheating of dehumidified air
    Patent number: 11828486
    Abstract: An apparatus includes a compressor, a first heat exchanger, a reheater, a first valve, a second heat exchanger, a four-way valve, a cap tube, and a blower. The compressor compresses a refrigerant. The blower moves air proximate the second heat exchanger to the reheater. During a heating mode of operation, the four-way valve is configured to direct refrigerant from the compressor to the second heat exchanger; the second heat exchanger is configured to use the refrigerant from the compressor to heat air proximate the second heat exchanger; and the cap tube is configured to allow refrigerant to bypass the reheater.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: November 28, 2023
    Assignee: Lennox Industries Inc.
    Inventors: Der-Kai Hung, Lin Lan, Christopher John Drury
  • VARIABLE REFRIGERANT FLOW SYSTEM WITH REHEATING OF DEHUMIDIFIED AIR
    Publication number: 20220107097
    Abstract: An apparatus includes a compressor, a first heat exchanger, a reheater, a first valve, a second heat exchanger, a four-way valve, a cap tube, and a blower. The compressor compresses a refrigerant. The blower moves air proximate the second heat exchanger to the reheater. During a heating mode of operation, the four-way valve is configured to direct refrigerant from the compressor to the second heat exchanger; the second heat exchanger is configured to use the refrigerant from the compressor to heat air proximate the second heat exchanger; and the cap tube is configured to allow refrigerant to bypass the reheater.
    Type: Application
    Filed: December 16, 2021
    Publication date: April 7, 2022
    Inventors: Der-Kai Hung, Lin Lan, Christopher John Drury
  • Variable refrigerant flow system with reheating of dehumidified air
    Patent number: 11255553
    Abstract: An apparatus includes a compressor, a first heat exchanger, a reheater, a first valve, a second heat exchanger, and a blower. The compressor compresses a refrigerant. The blower moves air proximate the second heat exchanger to the reheater. During a first mode of operation: the first heat exchanger removes heat from a first portion of the refrigerant from the compressor, the first valve opens such that a second portion of the refrigerant from the compressor flows to the reheater, the second heat exchanger uses the first portion of the refrigerant from the first heat exchanger and the second portion of the refrigerant from the reheater to cool air proximate the second heat exchanger, and the reheater uses the second portion of the refrigerant from the compressor to heat the air moved by the blower.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: February 22, 2022
    Assignee: Lennox Industries Inc.
    Inventors: Der-Kai Hung, Lin Lan, Christopher John Drury
  • Variable Refrigerant Flow System
    Publication number: 20210063030
    Abstract: An apparatus includes a compressor, a first heat exchanger, a reheater, a first valve, a second heat exchanger, and a blower. The compressor compresses a refrigerant. The blower moves air proximate the second heat exchanger to the reheater. During a first mode of operation: the first heat exchanger removes heat from a first portion of the refrigerant from the compressor, the first valve opens such that a second portion of the refrigerant from the compressor flows to the reheater, the second heat exchanger uses the first portion of the refrigerant from the first heat exchanger and the second portion of the refrigerant from the reheater to cool air proximate the second heat exchanger, and the reheater uses the second portion of the refrigerant from the compressor to heat the air moved by the blower.
    Type: Application
    Filed: August 26, 2019
    Publication date: March 4, 2021
    Inventors: Der-Kai Hung, Lin Lan, Christopher John Drury