Patents by Inventor Hon Man Choi

Hon Man Choi 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: 8402884
    Abstract: In a toaster, a toasting carriage is latched during toasting by an electromagnet actuated by a timer control circuit, and released when toasting time has elapsed. One of two rectifying circuits is always live and supplies a DC current to the timer control circuit and another, separate rectifying circuit supplies a DC current to energise the electromagnet when the toasting cycle is initiated. A first switching module switches a current flow through the heating element, while a second switching module isolates the always live rectifying circuit from the heating element. Switches of the first and second switching modules are disposed in an array and are closed by movement of the toasting carriage to the toasting position. More responsive and stable electromagnetic latching contributes to reducing risks associated with a fire that could occur during use of the toaster.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: March 26, 2013
    Assignee: Hon Way Plastic & Metal Mfg. Co. Ltd.
    Inventor: Hon Man Choi
  • Patent number: 8283611
    Abstract: A compact, low-cost hinge assembly for mounting a door to a household appliance. A stay bar has first and second elongate edge surfaces extending between opposing first and second ends. The first end is pivotally connected to a door-mounting bracket on which an abutment is located. A torsion spring is mounted to a body-mounting bracket, and an arm of the spring resiliently engages the first edge surface to urge the second surface into engagement with the abutment, urging the door, in a closed position, toward the closed position. A detent recess in the second surface receives the abutment to hold the door partially open. A stop face projects from the first edge surface, and the spring arm contacts the stop face to hold the door horizontal, in a fully open position.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: October 9, 2012
    Assignee: Hon Way Plastic & Metal Mfg. Co. Ltd.
    Inventor: Hon Man Choi
  • Publication number: 20120097044
    Abstract: In a toaster, a toasting carriage is latched during toasting by an electromagnet actuated by a timer control circuit, and released when toasting time has elapsed. One of two rectifying circuits is always live and supplies a DC current to the timer control circuit and another, separate rectifying circuit supplies a DC current to energise the electromagnet when the toasting cycle is initiated. A first switching module switches a current flow through the heating element, while a second switching module isolates the always live rectifying circuit from the heating element. Switches of the first and second switching modules are disposed in an array and are closed by movement of the toasting carriage to the toasting position. More responsive and stable electromagnetic latching contributes to reducing risks associated with a fire that could occur during use of the toaster.
    Type: Application
    Filed: October 22, 2010
    Publication date: April 26, 2012
    Applicant: Hon Way Plastic & Metal Manufacturing Company Limited
    Inventor: Hon Man CHOI
  • Publication number: 20110095014
    Abstract: A compact, low-cost hinge assembly for mounting a door to a household appliance. A stay bar has first and second elongate edge surfaces extending between opposing first and second ends. The first end is pivotally connected to a door-mounting bracket on which an abutment is located. A torsion spring is mounted to a body-mounting bracket, and an arm of the spring resiliently engages the first edge surface to urge the second surface into engagement with the abutment, urging the door, in a closed position, toward the closed position. A detent recess in the second surface receives the abutment to hold the door partially open. A stop face projects from the first edge surface, and the spring arm contacts the stop face to hold the door horizontal, in a fully open position.
    Type: Application
    Filed: October 22, 2009
    Publication date: April 28, 2011
    Applicant: HON WAY PLASTIC & METAL MFG. CO. LTD.
    Inventor: Hon Man Choi
  • Patent number: 7527132
    Abstract: A modular cord retractor apparatus includes a spring-driven reel and may be used with a range of different electrical appliances incorporating a dual conductor cord. Fixed and rotating electrical contact pairs provide power to the cord and reduce noise and wear. Rotating contacts are disposed at axially opposing ends of an axle assembly supporting the reel. Each rotating contact has a contact surface intersecting the axis and each fixed contact is mounted to a fixed reel mount. The axle assembly includes first and second axle portions of a dielectric material, each receiving a respective electrically-conductive strip, with the rotating contacts located proximate one end of each strip.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: May 5, 2009
    Assignee: Hon Way Plastic & Metal Mfg. Co. Ltd.
    Inventor: Hon Man Choi
  • Publication number: 20090090803
    Abstract: A modular cord retractor apparatus includes a spring-driven reel and may be used with a range of different electrical appliances incorporating a dual conductor cord. Fixed and rotating electrical contact pairs provide power to the cord reduce noise and wear. Rotating contacts are disposed at axially opposing ends of an axle assembly supporting the reel. Each rotating contact has a contact surface intersecting the axis and each fixed contact is mounted to a fixed reel mount. The axle assembly includes first and second axle portions of a dielectric material, each receiving a respective electrically-conductive strip, with the rotating contacts located proximate one end of each strip.
    Type: Application
    Filed: October 4, 2007
    Publication date: April 9, 2009
    Applicant: HON WAY PLASTIC & METAL MFG. CO. LTD
    Inventor: Hon Man Choi