Patents by Inventor Chi-Tsai Chang

Chi-Tsai Chang 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: 8968015
    Abstract: A safety socket includes a main body, a restraint mechanism and a release mechanism. The restraint mechanism includes an immovable end and a movable end. The immovable end is disposed in the main body. The movable end has a through hole. The through hole corresponds in position to one of insertion holes of the main body. The movable end has an annular protruding portion axially extending from the wall of the through hole. The annular protruding portion has a free end which is curved outward. The safety socket can prevent a plug from being disengaged from the socket by accident. The outer surface of the conductive pin of the plug won't be scraped and damaged by the wall of the through hole to enhance the service life and safety of the plug.
    Type: Grant
    Filed: March 9, 2013
    Date of Patent: March 3, 2015
    Inventor: Chi-Tsai Chang
  • Patent number: 8960453
    Abstract: A hanging device is used to hang a pincer body which is displayed. The pincer body includes a first clamp body and a second clamp body The first clamp body has an adjusting opening. The hanging device includes a hanging member having a hanging hole, a positioning member having a base and a positioning portion, the base having a top portion and a bottom portion, the bottom portion of the base assembled to the hanging member, and a width of the positioning portion being longer than a width of the base and a width of the adjusting opening of the first clamp body. When the base is inserted into the adjusting opening, the positioning portion is assembled to a top of the base so that the first clamp body is locked between the positioning portion and the hanging member.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: February 24, 2015
    Inventor: Chi-Tsai Chang
  • Patent number: 8951059
    Abstract: A safety receptacle for power cord includes a main body, a positioning plate, and a sheath. The positioning plate is fixed to the main body, having an elastically swayable active section. The sheath is movably sheathes the main body. The main body, the sheath, and the active section are formed with corresponding insertion holes and aperture. When the plug is inserted in the receptacle, the conductive pin of the plug is clutched by the active section so as to prohibiting slack of the plug. Additionally, the active section contacts the conductive pin by point contact, so that little dust would be produced by abrasion of the active section and the conductive pin. Without the piled dust, ignition is prevented. Safety of the receptacle is then improved.
    Type: Grant
    Filed: March 9, 2013
    Date of Patent: February 10, 2015
    Inventor: Chi-Tsai Chang
  • Patent number: 8857777
    Abstract: An anti-theft/safety hanger is provided with a plate body having an U-shaped wedge portion. The wedge portion includes a wedge corner portion on one of sidewalls and is connected to the plate body via a connecting edge. The wedge corner portion is movable between a first position and a second position. When the connecting edge is uncut-off, the wedge corner portion is located in the first position and the wedge portion is relatively undeformable so that a socket sleeved around the wedge portion is limited and detachable. When the connecting edge is cut off, the wedge corner portion is pushed and blocked by a blocking corner portion of the plate body so as to be located in the second position. The wedge portion is depressed, and the socket is thus unblocked by the wedge portion and detachable.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: October 14, 2014
    Inventor: Chi-Tsai Chang
  • Publication number: 20140298694
    Abstract: A detachable member for detachably mounting to a hanger is provided. The hanger includes a first surface and a second surface. The detachable member includes a first clamping portion, a second clamping portion and a connecting mechanism. The first and second clamping portions are connected together via the connecting mechanism and disposed respectively on the first and second surfaces. Whereby, the detachable member is pretty conspicuous, recognizable and attractive, and misplacement of an article with the detachable member on a suspender can be avoided and the management of articles is efficient.
    Type: Application
    Filed: June 23, 2014
    Publication date: October 9, 2014
    Inventor: CHI-TSAI CHANG
  • Patent number: 8840417
    Abstract: A safety socket of the present invention has a lock mechanism which is utilized for engaging a tubular hexagonal shell of a plug when the plug inserts into the safety socket. Thus, the components of the safety socket can be arranged loose within easier spacing. Therefore, safety purpose is fulfilled with simplified structure. Manufacturing of the safety socket is facilitated.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: September 23, 2014
    Inventor: Chi-Tsai Chang
  • Publication number: 20140227897
    Abstract: A safety receptacle for power cord includes a main body, a positioning plate, and a sheath. The positioning plate is fixed to the main body, having an elastically swayable active section. The sheath is movably sheathes the main body. The main body, the sheath, and the active section are formed with corresponding insertion holes and aperture. When the plug is inserted in the receptacle, the conductive pin of the plug is clutched by the active section so as to prohibiting slack of the plug. Additionally, the active section contacts the conductive pin by point contact, so that little dust would be produced by abrasion of the active section and the conductive pin. Without the piled dust, ignition is prevented. Safety of the receptacle is then improved.
    Type: Application
    Filed: March 9, 2013
    Publication date: August 14, 2014
    Inventor: CHI-TSAI CHANG
  • Publication number: 20140227902
    Abstract: A safety socket includes a main body, a restraint mechanism and a release mechanism. The restraint mechanism includes an immovable end and a movable end. The immovable end is disposed in the main body. The movable end has a through hole. The through hole corresponds in position to one of insertion holes of the main body. The movable end has an annular protruding portion axially extending from the wall of the through hole. The annular protruding portion has a free end which is curved outward. The safety socket can prevent a plug from being disengaged from the socket by accident. The outer surface of the conductive pin of the plug won't be scraped and damaged by the wall of the through hole to enhance the service life and safety of the plug.
    Type: Application
    Filed: March 9, 2013
    Publication date: August 14, 2014
    Inventor: CHI-TSAI CHANG
  • Publication number: 20140209780
    Abstract: An anti-theft suspension device for socket including a main body, a socket holder, and a locking mechanism is provided. The socket holder includes a seat and a receiving member. The seat is disposed on the main body. The receiving member is rotatably disposed on the seat. The receiving member is rotatable between a locking position and a unlock position. The socket holder includes a positioning bump located on one of the seat and the receiving member. When the receiving member is rotated, the positioning bump is alternatively exposed outside the socket holder to buckle the socket or received in the socket holder to release the socket.
    Type: Application
    Filed: January 24, 2014
    Publication date: July 31, 2014
    Applicant: CHUN NIEN PLASTIC LTD.
    Inventor: CHI-TSAI CHANG
  • Publication number: 20140208623
    Abstract: A detachable member for detachably mounting to a hanger is provided. The hanger includes a first surface and a second surface. The detachable member includes a first clamping portion, a second clamping portion and a connecting mechanism. The first and second clamping portions are connected together via the connecting mechanism and disposed respectively on the first and second surfaces. Whereby, the detachable member is pretty conspicuous, recognizable and attractive, and misplacement of an article with the detachable member on a suspender can be avoided and the management of articles is efficient.
    Type: Application
    Filed: March 13, 2013
    Publication date: July 31, 2014
    Inventor: Chi-Tsai CHANG
  • Patent number: 8784126
    Abstract: A locking socket includes a shell and a buckle mechanism. The shell forms a slot and plug holes adapted for receiving a plug. The buckle mechanism is pivotably disposed to the shell and is exposed out of the shell via the slot. The buckle mechanism further forms a buckle portion which is able to alternatively lock on or release the plug when the buckle mechanism pivots so that the locking socket of the present invention is adapted for the plug to insert in. Also, the buckle mechanism alternatively abuts against the plug to prevent the plug from detachment. Thereby, the present invention provides a locking socket with simpler structure, improved structure intensity, and better positioning.
    Type: Grant
    Filed: December 1, 2012
    Date of Patent: July 22, 2014
    Inventor: Chi-Tsai Chang
  • Patent number: 8714995
    Abstract: A safety socket of the present invention is adapted for receiving a plug and further alternatively locking the plug. Specifically, an operation portion adapted for a user to switch moves substantially parallely to a front plate of the safety socket so that the operation portion is adapted for being switched between locking state and unlocking state.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: May 6, 2014
    Inventor: Chi-Tsai Chang
  • Publication number: 20140084128
    Abstract: An anti-theft/safety hanger is provided with a plate body having an U-shaped wedge portion. The wedge portion includes a wedge corner portion on one of sidewalls and is connected to the plate body via a connecting edge. The wedge corner portion is movable between a first position and a second position. When the connecting edge is uncut-off, the wedge corner portion is located in the first position and the wedge portion is relatively undeformable so that a socket sleeved around the wedge portion is limited and detachable. When the connecting edge is cut off, the wedge corner portion is pushed and blocked by a blocking corner portion of the plate body so as to be located in the second position. The wedge portion is depressed, and the socket is thus unblocked by the wedge portion and detachable.
    Type: Application
    Filed: November 29, 2012
    Publication date: March 27, 2014
    Inventor: CHI-TSAI CHANG
  • Patent number: 8668512
    Abstract: A safety socket of the present invention has one or several groups of socket holes, lock mechanisms, and release mechanisms. Plug can be inserted into the socket holes. The lock mechanism can engage the plug for preventing unexpected removal of the plug. The release mechanism is used for operating the lock mechanism for releasing the plug. The release mechanism has a button which is arranged at aside of the socket holes. Thus, the button would not be hidden by the plug. User can approach to the button easily. Operation condition of the safety socket is then facilitated.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: March 11, 2014
    Inventor: Chi-Tsai Chang
  • Patent number: 8602280
    Abstract: An adhesive tape dispenser of the present invention includes a housing and a tape holder. The housing has an opening and a pivot axle disposed on the opening. The tape holder is received in the housing and has a pivot hole to receive the pivot axle. The housing and the tape holder have a limitation structure to enable the tape holder to pivot between a closed position and an open position. The housing has a pressing portion which is able to press the tape holder to cancel limitation of the limitation structure, and then the tape holder is able to pivot away from the opening freely to facilitate the replacement of tape roll. Thereby, the adhesive tape dispenser of the present invention can provide an easy way to operate, and the replacement of tape roll becomes more convenient.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: December 10, 2013
    Inventor: Chi-Tsai Chang
  • Publication number: 20130320174
    Abstract: A hanging device is used to hang a pincer body which is displayed. The pincer body includes a first clamp body and a second clamp body The first clamp body has an adjusting opening. The hanging device includes a hanging member having a hanging hole, a positioning member having a base and a positioning portion, the base having a top portion and a bottom portion, the bottom portion of the base assembled to the hanging member, and a width of the positioning portion being longer than a width of the base and a width of the adjusting opening of the first clamp body. When the base is inserted into the adjusting opening, the positioning portion is assembled to a top of the base so that the first clamp body is locked between the positioning portion and the hanging member.
    Type: Application
    Filed: April 26, 2013
    Publication date: December 5, 2013
    Inventor: Chi-Tsai CHANG
  • Publication number: 20130244468
    Abstract: A safety socket of the present invention has a lock mechanism which is utilized for engaging a tubular hexagonal shell of a plug when the plug inserts into the safety socket. Thus, the components of the safety socket can be arranged loose within easier spacing. Therefore, safety purpose is fulfilled with simplified structure. Manufacturing of the safety socket is facilitated.
    Type: Application
    Filed: November 28, 2012
    Publication date: September 19, 2013
    Inventor: CHI-TSAI CHANG
  • Publication number: 20130157495
    Abstract: A safety socket of the present invention is adapted for receiving a plug and further alternatively locking the plug. Specifically, an operation portion adapted for a user to switch moves substantially parallely to a front plate of the safety socket so that the operation portion is adapted for being switched between locking state and unlocking state.
    Type: Application
    Filed: December 11, 2012
    Publication date: June 20, 2013
    Inventor: CHI-TSAI CHANG
  • Patent number: D714135
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: September 30, 2014
    Assignee: Chun Nien Plastic Ltd.
    Inventor: Chi-Tsai Chang
  • Patent number: D732948
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: June 30, 2015
    Assignee: Chun Nien Plastic Ltd.
    Inventor: Chi-Tsai Chang