Patents by Inventor James S. T. Hou

James S. T. Hou 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: 9950329
    Abstract: A high pressure water cleaner with detachable water tank includes a water cleaner main unit having an internal hydraulic pump, a top receptacle and a feed water connector in the receptacle in communication with the hydraulic pump, and a water tank detachably insertable into the receptacle and lockable to the receptacle by a movable lock.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: April 24, 2018
    Assignee: ACTIVE PRODUCTS INTERNATIONAL LIMITED
    Inventors: James S. T. Hou, Simon Treadwell, Ming Liu
  • Patent number: 9616444
    Abstract: A high pressure water cleaner with detachable water tank includes a water cleaner main unit having an internal hydraulic pump, a top receptacle and a feed water connector in the receptacle in communication with the hydraulic pump, and a water tank detachably insertable into the receptacle and lockable to the receptacle by a movable lock. Thus, the water cleaner main unit and the water tank can be used together or separately subject to different application requirements.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: April 11, 2017
    Assignee: ACTIVE PRODUCTS INTERNATIONAL LIMITED
    Inventors: James S. T. Hou, Simon Treadwell, Ming Liu
  • Publication number: 20150183006
    Abstract: A high pressure water cleaner with detachable water tank includes a water cleaner main unit having an internal hydraulic pump, a top receptacle and a feed water connector in the receptacle in communication with the hydraulic pump, and a water tank detachably insertable into the receptacle and lockable to the receptacle by a movable lock.
    Type: Application
    Filed: December 23, 2014
    Publication date: July 2, 2015
    Applicant: ACTIVE PRODUCTS INTERNATIONAL LIMITED
    Inventors: James S. T. Hou, Simon Treadwell, Ming Liu
  • Publication number: 20150174599
    Abstract: A high pressure water cleaner with detachable water tank includes a water cleaner main unit having an internal hydraulic pump, a top receptacle and a feed water connector in the receptacle in communication with the hydraulic pump, and a water tank detachably insertable into the receptacle and lockable to the receptacle by a movable lock. Thus, the water cleaner main unit and the water tank can be used together or separately subject to different application requirements.
    Type: Application
    Filed: December 23, 2014
    Publication date: June 25, 2015
    Applicant: ACTIVE PRODUCTS INTERNATIONAL LIMITED
    Inventors: James S. T. Hou, Simon Treadwell, Ming Liu
  • Patent number: 8955531
    Abstract: A high pressure water cleaner with detachable water tank includes a water cleaner main unit having an internal hydraulic pump, a top receptacle and a feed water connector in the receptacle in communication with the hydraulic pump, and a water tank detachably insertable into the receptacle and lockable to the receptacle by a movable lock. Thus, the water cleaner main unit and the water tank can be used together or separately subject to different application requirements.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: February 17, 2015
    Assignee: Active Products International Limited
    Inventors: James S. T. Hou, Simon Treadwell, Ming Liu
  • Publication number: 20120312340
    Abstract: A high pressure water cleaner with detachable water tank includes a water cleaner main unit having an internal hydraulic pump, a top receptacle and a feed water connector in the receptacle in communication with the hydraulic pump, and a water tank detachably insertable into the receptacle and lockable to the receptacle by a movable lock. Thus, the water cleaner main unit and the water tank can be used together or separately subject to different application requirements.
    Type: Application
    Filed: June 7, 2011
    Publication date: December 13, 2012
    Applicant: ACTIVE PRODUCTS INTERNATIONAL LIMITED
    Inventor: James S. T. Hou
  • Patent number: 7871019
    Abstract: An adjustable jet gun for cleaning machine includes a barrel, a pressure adjustment sleeve fastened to the front end of the barrel and operable to adjust the pressure of water delivered through the adjustable jet gun, a support ring sleeved onto the front end of the pressure adjustment sleeve and holding a steel ball in each of a number of ball racks around the periphery thereof, a sliding sleeve sleeved onto the support ring and movable to force the steel balls out of the inside wall of the support ring, a nozzle head detachably connected to the front end of the support ring and having a positioning groove extending around the periphery of a rear positioning ring thereof for receiving the steel balls to lock the nozzle head to the support ring.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: January 18, 2011
    Assignee: Active Products International Limited
    Inventor: James S. T. Hou
  • Publication number: 20110000984
    Abstract: An adjustable jet gun for cleaning machine includes a barrel, a pressure adjustment sleeve fastened to the front end of the barrel and operable to adjust the pressure of water delivered through the adjustable jet gun, a support ring sleeved onto the front end of the pressure adjustment sleeve and holding a steel ball in each of a number of ball racks around the periphery thereof, a sliding sleeve sleeved onto the support ring and movable to force the steel balls out of the inside wall of the support ring, a nozzle head detachably connected to the front end of the support ring and having a positioning groove extending around the periphery of a rear positioning ring thereof for receiving the steel balls to lock the nozzle head to the support ring.
    Type: Application
    Filed: July 1, 2009
    Publication date: January 6, 2011
    Applicant: ACTIVE PRODUCTS INTERNATIONAL COMPANY
    Inventor: James S.T. Hou