Patents by Inventor Tong Liang

Tong Liang 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).

  • Publication number: 20150143664
    Abstract: A door travel limiting device includes a housing, a stop member, a compression spring, and a flexible member. The stop member is slidably received by the housing, and is slidable in first and second sliding directions, and has first and second ends respectively extending outwardly from different portions of the housing. The stop member is biased to slide in the first sliding direction, causing a portion proximate to its second end to noimally retract into the housing. Extreme sliding positions of the stop member are limited by protrusions. A flexible member protrudes from the stop member to selectively engage portions of a housing track, to retain the second end of the stop member at an intermediate position between its first and second positions, when the stop member is first actuated to slide from the first position to the second position, and is then no longer actuated but biased.
    Type: Application
    Filed: November 26, 2013
    Publication date: May 28, 2015
    Inventors: Luke Liang, Tong Liang, David Chen
  • Publication number: 20150089877
    Abstract: A device may limit opening of a sash hingedly coupled to a master frame, and includes: a bracket attached to the sash; a first arm having a first end pivotally coupled to the bracket; a second arm having a first end pivotally coupled to the first arm's second end; means for biasing the second arm into a retracted position; and a release assembly. The release assembly is secured to the master frame and includes a hook pivotable between a first position and a second position, which, in the first position, may be releasably received in an opening in the second end of the second arm when the second arm is in the retracted position, as the sash is closed and received within the master window frame The second arm is disengaged from the hook, permitting full opening of the sash, when the hook is pivoted into the second position.
    Type: Application
    Filed: October 1, 2013
    Publication date: April 2, 2015
    Inventors: Luke Liang, Tong Liang, David Chen
  • Patent number: 8870244
    Abstract: A sash lock comprises a housing, latch member, activator arm, and trigger. The latch member is spring biased to slide from an unlocked position towards a locked position. The activator arm and trigger are pivotally mounted within the housing, with a torsion spring biasing the trigger relative to the activator arm, to cause the activator arm to pivot and contact the latch member. When the latch member is moved to the unlocked position, the biased activator arm engages the latch member to retain it in the unlocked position, while the biased trigger member pivots to have a portion protrude out of the housing. Upon closing the sash member, an angled surface of a keeper contacts a curved surface of the protruding trigger to cause it to counter-rotate and drive the activator arm to disengage from the latch member and automatically permit biasing of the latch member into the locked position.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: October 28, 2014
    Assignee: Vision Industries Group, Inc.
    Inventors: Luke Liang, Tong Liang, David Chen
  • Publication number: 20140306462
    Abstract: A window vent stop for use in a sliding sash window assembly or a sliding door assembly. The vent stop has a housing adapted to be disposed in a recess in the non-movable sash member. This housing includes a cavity with a bottom plate therein. The tumbler has at least one pivot for pivotally securing the tumbler to the housing for movement between an extended position, to prevent movement of the sliding member and a retracted position, to allow movement of the sliding member. Also within the housing is a spring for biasing the tumbler. The housing has one or more flexible members extending from the end walls of the housing that secure the housing to an opening in a window sash when a portion of the window sash is positioned between the underside of a lip on said housing and the flexible member.
    Type: Application
    Filed: March 6, 2014
    Publication date: October 16, 2014
    Inventors: Luke Liang, Tong Liang, David Chen
  • Patent number: 8844985
    Abstract: An improved forced entry resistant sash lock comprises a housing, a shaft rotatably mounted thereto, a locking cam and a delay cam rotatably and fixedly mounted to the shaft, respectively, and a locking spring. The delay cam selectively engages and drives the locking cam between a locked position and an unlocked position. Locking spring biasing causes engagement with a locking earn opening to lock the cam when in the latch-locked position, with engagement to a depth permitting releasable detent engagement in a delay cam recess. Selective engagement and driving of the locking cam comprises a first portion of delay cam rotation being without driven locking cam rotation, and a second portion causing driven locking cam rotation from a retracted position into a protruding position. Selective engagement is by contact between corresponding protrusions on the delay and locking cams. Shaft/delay cam counter-rotation to unlock the latch proceeds in a reverse manner.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: September 30, 2014
    Assignee: Vision Industries Group, Inc.
    Inventors: Luke Liang, Tong Liang, David Chen
  • Patent number: 8833809
    Abstract: A window vent stop for use in a sliding member of a sliding sash window assembly or a sliding door assembly. The vent stop has a housing adapted to be disposed in a recess in the non-movable sash member of the assembly. This housing includes a cavity with a bottom plate. A tumbler has at least one pivot for pivotally securing the tumbler to the housing for movement between an extended position, to prevent movement of the sliding member and a retracted position, to allow movement of the sliding member. Also within the housing is a spring for biasing the tumbler toward the extended position. The housing has one or more flexible members extending from the end walls of the housing that secure the housing to the non-movable sash member.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: September 16, 2014
    Assignee: Vision Industries Group, Inc.
    Inventors: Luke Liang, Tong Liang, David Chen
  • Patent number: 8789857
    Abstract: An improved forced entry resistant sash lock comprises a housing, a shaft rotatably mounted thereto, a locking spring, and a locking cam and a delay cam rotatably and fixedly mounted to the shaft, respectively. The delay cam selectively engages and drives the locking cam between a locked position and an unlocked position. Locking spring biasing causes engagement with a locking cam opening to lock the cam when in the latch-locked position, with engagement to a depth permitting releasable detent engagement in a delay cam recess. Selective engagement and driving of the locking cam comprises a first portion of delay cam rotation being without driven locking cam rotation, and a second portion causing driven locking cam rotation from a retracted position into a protruding position. Selective engagement is by contact between corresponding protrusions on the delay and locking cams. Shaft/delay cam counter-rotation to unlock the latch proceeds in a reverse manner.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: July 29, 2014
    Assignee: Vision Industries Group, Inc.
    Inventors: Luke Liang, Tong Liang, David Chen
  • Publication number: 20130229255
    Abstract: A network transformer module includes a first magnetic element, a second magnetic element, and a connection board. The first magnetic element includes a first winding set and a first core, and the first winding set is wound around the first core. The second magnetic element includes a second winding set and a second core, and the second winding set is wound around the second core. The first winding set of the first magnetic element is independent from the second winding set of the second magnetic element, and the first winding set is not wound around the second core. The connection board electrically couples the first winding set with the second winding set. A magnetic element is also disclosed herein.
    Type: Application
    Filed: September 13, 2012
    Publication date: September 5, 2013
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Hua-Sheng SHIH, Yu-Sen LIN, Tong-Liang NI, Ying-Chian KANG, Yi-Sheng CHEN
  • Patent number: 8511724
    Abstract: An improved window sash latch which has a locking mechanism and a keeper is provided with a handle that rotates from a “locked” to an “unlocked” position. An inner cavity of the handle has a spring assembly having a sliding part that can be forced into a detent as the handle slides around a cylindrical extension of an outer surface of the latch. The detents correspond to a “locked” and an “unlocked” position of the latch. The latch also provides two cams where both cams revolve relative to each other; one cam is activated by the handle through the handle's shaft, the other cam engages the keeper, and both cams engage each other.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: August 20, 2013
    Assignee: Vision Industries Group, Inc.
    Inventors: Luke Liang, Tong Liang, David Chen
  • Publication number: 20130093198
    Abstract: A latch is adapted to accommodate its installation into any one of several sash window frames, having different cross-sectional frame arrangements and setback distances. The latch includes a housing, spring and latch bolt. The housing includes a top plate, a side wall, and a bottom wall, which form a cavity, with the latch bolt being slidably received therein. The spring biasing the latch bolt to protrude out from a housing opening. The bottom wall includes a contoured peripheral opening configured to form a first flexible platform and a second flexible platform, each having one or more tabs thereon, formed by first and second surfaces converging to form an apex. The first surface of each tab accommodates latch installation for varying sash window frame set-back distances, with the second surface being configured to cause the platform to deflect into said cavity when being engaged during the installation into the sash frame.
    Type: Application
    Filed: October 11, 2012
    Publication date: April 18, 2013
    Inventors: Luke Liang, Tong Liang, David Chen
  • Patent number: 8414039
    Abstract: An automatic sash lock is disclosed having a housing with a top surface and a bottom surface and one or more side surfaces extending from said top surface. The housing has a front face at least a portion of which is open to the interior of the housing. The housing has a tongue movably secured thereto. The tongue has a retracted position and an extended position wherein the tongue extends from the open area of the front face of the housing. The tongue moves from a retracted position to an extended position when a portion of said housing contacts a keeper.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: April 9, 2013
    Inventors: Luke Liang, David Chen, Tong Liang
  • Patent number: 8360484
    Abstract: A vent stop is installed into a window/door to limit travel therein of a sash member, and being particularly adapted to permit ease of its installation, especially into a wooden door/window. The stop incorporates multiple retention features to inhibit the stop's removal, once properly installed. The retention features include a wedge-shaped protrusion located at a distal end of the stop housing, which engages the wood of the window opening when pivotally installed therein, to secure a first end of the stop. The opposite end of the stop may be redundantly secured. A first feature for securing the opposite end may comprise one or more arcuate flanges on housing side walls, flanges being adapted to unidirectional movement so as to permit its movement relative to the window opening during installation, but thereafter deterring counter-pivotal motion that would allow removal of the vent stop. A second feature comprises a deformable spring clip.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: January 29, 2013
    Inventors: Luke Liang, Tong Liang, David Chen
  • Patent number: 8336930
    Abstract: An improved window sash latch which has a locking mechanism and a keeper is provided with a handle that rotates from a “locked” to an “unlocked” position. An inner cavity of the handle has a spring assembly having a sliding part that can be forced into a detent as the handle slides around a cylindrical extension of an outer surface of the latch. The detents correspond to a “locked” and an “unlocked” position of the latch. The latch also provides two cams where both cams revolve relative to each other; one cam is activated by the handle through the handle's shaft, the other cam engages the keeper, and both cams engage each other.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: December 25, 2012
    Inventors: Luke Liang, Tong Liang, David Chen
  • Publication number: 20120313386
    Abstract: An improved forced entry resistant sash lock comprises a housing, a shaft rotatably mounted thereto, a locking cam and a delay cam rotatably and fixedly mounted to the shaft, respectively, and a locking spring. The delay cam selectively engages and drives the locking cam between a locked position and an unlocked position. Locking spring biasing causes engagement with a locking earn opening to lock the cam when in the latch-locked position, with engagement to a depth permitting releasable detent engagement in a delay cam recess. Selective engagement and driving of the locking cam comprises a first portion of delay cam rotation being without driven locking cam rotation, and a second portion causing driven locking cam rotation from a retracted position into a protruding position. Selective engagement is by contact between corresponding protrusions on the delay and locking cams. Shaft/delay cam counter-rotation to unlock the latch proceeds in a reverse manner.
    Type: Application
    Filed: October 28, 2011
    Publication date: December 13, 2012
    Inventors: Luke Liang, Tong Liang, David Chen
  • Publication number: 20120313387
    Abstract: An improved forced entry resistant sash lock comprises a housing, a shaft rotatably mounted thereto, a locking spring, and a locking cam and a delay cam rotatably and fixedly mounted to the shaft, respectively. The delay cam selectively engages and drives the locking cam between a locked position and an unlocked position. Locking spring biasing causes engagement with a locking cam opening to lock the cam when in the latch-locked position, with engagement to a depth permitting releasable detent engagement in a delay cam recess. Selective engagement and driving of the locking cam comprises a first portion of delay cam rotation being without driven locking cam rotation, and a second portion causing driven locking cam rotation from a retracted position into a protruding position. Selective engagement is by contact between corresponding protrusions on the delay and locking cams. Shaft/delay cam counter-rotation to unlock the latch proceeds in a reverse manner.
    Type: Application
    Filed: June 8, 2012
    Publication date: December 13, 2012
    Inventors: Luke Liang, Tong Liang, David Chen
  • Publication number: 20120284993
    Abstract: A lock adapted for attachment to a sash window/door without screws comprises: a shaft with a cam secured thereon is rotatably secured to a housing, with the cam disposed within a housing cavity and rotatable therefrom out of an opening, into an extended position. The housing may be a single integrally formed wall that preferably has a flat bottom surface. A first attachment leg protrudes out from the housing cavity to extend beyond the bottom surface, with a foot thereon extending beyond a first end of the housing. A second attachment leg protrudes out the housing cavity second end, with a foot thereon oriented toward the housing first end, and a locking tab extends from the housing bottom surface. Installation of the screwless sash lock is by receiving the first foot, second foot, and locking tab within correspondingly positioned openings in the window/door rail, through sequenced rotational and sliding motion.
    Type: Application
    Filed: May 3, 2012
    Publication date: November 15, 2012
    Inventors: Luke Liang, Tong Liang, David Chen
  • Patent number: 8235430
    Abstract: A window vent stop for use in a sliding sash window assembly or a sliding door assembly. The vent stop has a housing adapted to be disposed in a recess in the non-movable sash member. This housing includes a cavity with a bottom plate therein. The tumbler has at least one pivot for pivotally securing the tumbler to the housing for movement between an extended position, to prevent movement of the sliding member and a retracted position, to allow movement of the sliding member. Also within the housing is a spring for biasing the tumbler. The housing has one or more flexible members extending from the end walls of the housing that secure the housing to an opening in a window sash when a portion of the window sash is positioned between the underside of a lip on said housing and the flexible member.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: August 7, 2012
    Inventors: Luke Liang, Tong Liang, David Chen
  • Patent number: 8220846
    Abstract: A latch is provided for use principally on a pivotal sash window of a double-hung sash window assembly. The latch comprises a latch-bolt slidably mounted within and biased relative to a housing, where the housing is mounted to the top rail of the sash window. The latch bolt is connected to a button for manual actuation of the latch bolt. The latch bolt, while maintaining the convenience and utility of a standard short throw latch, is contoured and designed to maintain engagement with the jam after the window has been deformed under high sustained wind loading typically experienced during extreme weather phenomena such as hurricanes and tornados. The engagement is assured in spite of twisting of the latch bolt within the corresponding opening in the jam.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: July 17, 2012
    Inventors: Luke Liang, Tong Liang, David Chen
  • Patent number: 8132290
    Abstract: A balance assembly for a sliding sash window, where a spring-loaded pulley arrangement is interconnected between the window frame and the window, to counter the weight of the window, and permit ease of opening and closing the window. The spring-loaded pulley arrangement is located within a housing, which also facilitates attachment of the shoe. The shoe of this balance assembly being rotatable between a first and a second position to permit fitting the assembly into the side of the window frame, when the shoe is in the first position, and to permit final installation of the assembly when the shoe in the second position. The shoe is retained in the first and second positions by detents. This rotatable shoe feature permitting installation, of the Balance Assembly of this invention, into a window frame at later stages of the window assembly sequence.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: March 13, 2012
    Assignee: Vision Industries Group, Inc.
    Inventors: Luke Liang, Tong Liang, David Chen
  • Patent number: D721942
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: February 3, 2015
    Inventors: Luke Liang, Tong Liang, David Chen