Patents Assigned to Caltraco International Limited
  • Publication number: 20100097798
    Abstract: A LED light module for portable lighting which comprises a supporting base, a supporting plate, a diffusing cover, an electrical base, an axle, four round flat top single die miniature LEDs each with a light emitting angle of 100 degrees and a driving circuit disposed inside the axle and electrically connected to the LEDs. The present invention is more susceptible of low heat generation and low production costs. Moreover, since only four round flat top single die miniature LEDs are used to provide sufficient light output for an area in 360 degrees, it is more effective than the conventional portable lighting which provide spot lights only.
    Type: Application
    Filed: October 22, 2008
    Publication date: April 22, 2010
    Applicant: CALTRACO INTERNATIONAL LIMITED
    Inventor: TONY CHUNLUNG YOUNG
  • Publication number: 20090135606
    Abstract: A multi-reflector mechanism for a LED light source which comprises a LED light source, an outer parabolic reflector, an inner parabolic reflector and a sliding switch, wherein the inner reflector is disposed within the outer reflector with the focuses of both reflectors being different points on a common axis, and the focus of the outer reflector being the highest one nearest to the plane of the opening of the outer reflector; and the LED light source is disposed within the inner reflector and protrudes out from the vertex of the inner reflector and is coaxially and adjustably disposed at or near the focus of the inner reflector or of the outer reflector, and the light emitting angle of the LED light source is larger than the angle formed by the two points on the edge of the opening forming the diameter thereof and the focus of the inner reflector.
    Type: Application
    Filed: November 28, 2007
    Publication date: May 28, 2009
    Applicant: CALTRACO INTERNATIONAL LIMITED
    Inventor: TONY CHUNLUNG YOUNG
  • Publication number: 20080301907
    Abstract: A flip-out mechanism with safety press-button for a foldable device which comprises a torsion spring which is coiled uniformly or substantially uniformly with each coil of the same or substantially the same outside diameter and disposed in a circular compartment of the inner surface of the top casing, with one end of the torsion spring bended outward from the coil body of the torsion spring and disposed inside a corresponding receiving section of the circular compartment and with the other end of the torsion spring bended upward from the coil body of the torsion spring and disposed inside a receiving hole on the surface of the foldable object near its periphery aligned in a straight line with the through hole in the middle and then with the recess. The present invention is of simpler construction and assembly and is therefore susceptible of a lower production cost. It is also safer for carrying around.
    Type: Application
    Filed: June 6, 2007
    Publication date: December 11, 2008
    Applicant: CALTRACO INTERNATIONAL LIMITED
    Inventor: YOUNG TONY CHUNLUNG
  • Patent number: D561217
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: February 5, 2008
    Assignee: Caltraco International Limited
    Inventor: Tony Chunlung Young
  • Patent number: D592797
    Type: Grant
    Filed: August 22, 2007
    Date of Patent: May 19, 2009
    Assignee: Caltraco International Limited
    Inventor: Tony Chunlung Young
  • Patent number: D324580
    Type: Grant
    Filed: August 9, 1990
    Date of Patent: March 10, 1992
    Assignee: Caltraco International Limited
    Inventor: Tony C. Young
  • Patent number: D342582
    Type: Grant
    Filed: March 21, 1990
    Date of Patent: December 21, 1993
    Assignee: Caltraco International Limited
    Inventor: Tony C. Young
  • Patent number: D357087
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: April 4, 1995
    Assignee: Caltraco International Limited
    Inventor: Tony C. Young
  • Patent number: D407513
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: March 30, 1999
    Assignee: Caltraco International Limited
    Inventor: Tony Young Chun Lung
  • Patent number: D426332
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: June 6, 2000
    Assignee: Caltraco International Limited
    Inventor: Tony C. Young
  • Patent number: D671673
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: November 27, 2012
    Assignee: Caltraco International Limited
    Inventors: Tony Chunlung Young, Dale Wyn Guy Young
  • Patent number: D726358
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: April 7, 2015
    Assignee: Caltraco International Limited
    Inventor: Wyn-Guy Dale Young