Patents by Inventor Henry C. Chu

Henry C. Chu 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: 6908116
    Abstract: A fixation clamp device includes a bracket having two flaps extended from a base plate which has a channel, and a block slidably coupled along the channel of the base plate with a fastener. The block includes a mouth and a port communicating with a bore, a fitting is engaged onto one of the flaps and coupled to the port of the block. A forcing device may force the block against the fitting. A gasket may be engaged between the port of the block and the fitting, and may include one end engaged into the port of the block. One or more further fittings may be selectively engaged onto the bracket, and coupled to the port of the block.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: June 21, 2005
    Inventors: Henry C. Chu, Ralph R. Edwards
  • Publication number: 20040061333
    Abstract: A conduit coupling includes a tubular member having a bore formed in one end for receiving one end region of a relatively harder conduit. A ferrule is engaged onto the conduit and has one end region engageable into the end region of the tubular member. A ring has one end region engageable into the other end region of the ferrule and forcible toward the ferrule for both expanding the other end region of the ferrule and moving the ferrule toward the tubular member, to solidly engage the end region of the ferrule onto the outer peripheral surface of the conduit.
    Type: Application
    Filed: September 30, 2002
    Publication date: April 1, 2004
    Inventor: Henry C. Chu
  • Publication number: 20030230853
    Abstract: A compressor includes a spindle rotatably received in a housing, and a sealing device engaged between the housing and the spindle and having a peripheral casing engaged with the housing and having a peripheral chamber for receiving a sealing ring and one or more spacers. The sealing ring will be engaged with the spindle. A spare sealing ring may be changed and engaged in the casing and engaged with the other portion of the spindle when the previous sealing ring has been worn away. Alternatively, a spare sealing device may be changeably secured onto the spindle.
    Type: Application
    Filed: June 17, 2002
    Publication date: December 18, 2003
    Inventor: Henry C. Chu
  • Patent number: 6644898
    Abstract: A repairing device for repairing a threaded port includes a housing for threading to the threaded port and having an inner thread for threading with a barrel. One or more machining tools may be changeably and rotatably secured in the barrel with bearings, each may include a cutting blade for engaging with the port and for machining and repairing one or more surfaces of the port. The machining tools may be detachably secured to the barrel with a retaining ring, for allowing the cutting blades of the machining tools to machine and, repair various surfaces or threads of the ports.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: November 11, 2003
    Inventor: Henry C. Chu
  • Publication number: 20030194285
    Abstract: A repairing device for repairing a threaded port includes a housing for threading to the threaded port and having an inner thread for threading with a barrel. One or more machining tools may be changeably and rotatably secured in the barrel with bearings, each may include a cutting blade for engaging with the port and for machining and repairing one or more surfaces of the port. The machining tools may be detachably secured to the barrel with a retaining ring, for allowing the cutting blades of the machining tools to machine and repair various surfaces or threads of the ports.
    Type: Application
    Filed: April 11, 2002
    Publication date: October 16, 2003
    Inventor: Henry C. Chu
  • Publication number: 20030192576
    Abstract: A cleaning facility for cleaning tubings of vehicle includes an air tubing system coupled to actuate a pump, and two air valves and two fluid valves coupled to the vehicle. The pump is coupled to a cleaning fluid reservoir for pumping the cleaning fluid to clean the vehicle. An air switch valve and a fluid switch valve are coupled to the air tubing system for selectively switching off the air or fluid valves. The cleaning facility may be operated without specially trained persons and may prevent the fluid container from being over pressurized.
    Type: Application
    Filed: April 11, 2002
    Publication date: October 16, 2003
    Inventor: Henry C. Chu
  • Patent number: 6560985
    Abstract: A universal accumulator device for an auto air conditioning system includes a housing having an inlet opening, one or more outlet openings, one or more inlet fittings selectively engaged with the inlet opening of the housing, and one or more outlet fittings selectively engaged with the outlet opening of the housing. The inlet and outlet fittings may include a metric or a British thread for coupling to the metric or British pipings or lock nuts. A tubing may be selectively secured to the fittings with one or more sealing rings and with an additional barrel.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: May 13, 2003
    Inventor: Henry C. Chu
  • Patent number: D505961
    Type: Grant
    Filed: July 27, 2004
    Date of Patent: June 7, 2005
    Inventor: Henry C. Chu