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).

  • Publication number: 20100252600
    Abstract: The adhesive tape dispensing device contains a body having at least a tray with a lateral pivot along a front bottom edge of the body, and at least a tape holder having at least a front side, a lateral through groove along a front bottom corner, a lateral blade along a front top corner, a lateral axle for holding a roll of adhesive tape, and a concave between the front side and the axle. Each tape holder is removably attached to the pivot by embedding the pivot to the through groove. Each tape holder is capable of rotating forward to facilitate access and cut-off to tapes and of rotating backward about the pivot to restore original position.
    Type: Application
    Filed: April 1, 2009
    Publication date: October 7, 2010
    Inventor: CHI-TSAI CHANG
  • Publication number: 20100181028
    Abstract: An integrally-formed contamination-resistant adhesive tape dispenser includes an integrally-formed injection-molded dispenser body, which has a curvedly recessed tape dispensing mouth and a cover that are connected to each other in an integrated and rotatable manner to provide a frame- or box-like stable and stiff configuration. Two side plates form in lower sides of central sections thereof symmetric folding lines to allow for outward bending of half portion of the two sides. Opposite central portions on inside surfaces of the bendable side plates are provided with projecting shaft cylinders that engage each other to allow for a body of adhesive tape to fit thereon, so that the projecting shaft cylinders of the side plates can mate and couple to each other to form a complete structure of the adhesive tape dispenser, which allows the dispenser to be molded with a single mold and suits the needs for safe and sanitary operations.
    Type: Application
    Filed: January 10, 2010
    Publication date: July 22, 2010
    Inventor: CHI-TSAI CHANG
  • Patent number: 7641087
    Abstract: A dispensing device for adhesive tape has a flat cylindrical base member with a coaxial axle element inside for the mounting of a roll of adhesive tape. A slit is provided along the wall of the cylindrical base member through which the tape is pulled out. On a section of the wall adjacent to the slit, a curved rectangular buckle is hinged to the wall, which can be flipped away from the slit to be held at an appropriate included angle with the wall. A cutting blade is provided along the outer edge of the buckle for cutting the tape while the end of the remaining tape is automatically adhered to the edge of the buckle. When the buckle is closed to the wall, the exposed segment of the tape is folded between the buckle and the section of wall.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: January 5, 2010
    Inventor: Chi-Tsai Chang
  • Publication number: 20090230163
    Abstract: The tape dispenser completely conceals its tape roll in a tightly closed housing. A removable cover extended from a major side or a top side of the tape dispenser's body is provided. At least a major side of the tape dispenser's body has a curved recession. As such, when the cover is opened, a section of the adhesive tape and a cutting edge at a front edge of a bottom side of the tape dispenser's body is exposed in a front opening and the recession for easy and convenient access. As such, the tape dispenser provides higher degrees of sanitation and safety than the conventional tape dispensers.
    Type: Application
    Filed: March 13, 2008
    Publication date: September 17, 2009
    Inventor: Chi-Tsai Chang
  • Patent number: 7565973
    Abstract: A suspension tag for a socket wrench is disclosed which provides a measure for easy and secured hanging of the socket wrench. The suspension tag includes a tag body forming a receptacle seat defining a bore to rotatably receive therein a fitting cap. The fitting cap forms a hollow frame section to receive a drive piece of the wrench therein. The hollow frame has an elastically deformable top panel that is connected to side panels in a limited moveability manner. The top panel forms an internal projection that, when brought into contact with the drive piece of the wrench at the time the wrench is inserted into the fitting cap, forces the top panel to deform and displace upward to allow the project to reach and thus engage a hole defined in the drive piece of the wrench that retains a spring-biased sphere therein so as to secure the wrench to the fitting cap and thus the suspension tag.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: July 28, 2009
    Inventor: Chi-Tsai Chang
  • Publication number: 20080272017
    Abstract: A suspension tag for a socket wrench is disclosed which provides a measure for easy and secured hanging of the socket wrench. The suspension tag includes a tag body forming a receptacle seat defining a bore to rotatably receive therein a fitting cap. The fitting cap forms a hollow frame section to receive a drive piece of the wrench therein. The hollow frame has an elastically deformable top panel that is connected to side panels in a limited moveability manner. The top panel forms an internal projection that, when brought into contact with the drive piece of the wrench at the time the wrench is inserted into the fitting cap, forces the top panel to deform and displace upward to allow the project to reach and thus engage a hole defined in the drive piece of the wrench that retains a spring-biased sphere therein so as to secure the wrench to the fitting cap and thus the suspension tag.
    Type: Application
    Filed: May 3, 2007
    Publication date: November 6, 2008
    Inventor: CHI-TSAI CHANG
  • Patent number: 7392902
    Abstract: A suspension device which prevents a suspended tool from burglary is disclosed. The suspension device comprises a suspension plate, and a clipping seat, connected to the bottom of the suspension plate, for clipping a tool, characterized in that the clipping seat has a hollow interior which is mounted with a rim mount directly encloses the external rim of the suspended tool such that the clipping tool can be locked and secured.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: July 1, 2008
    Inventor: Chi-Tsai Chang
  • Publication number: 20080105723
    Abstract: A dispensing device for adhesive tape has a flat cylindrical base member with a coaxial axle element inside for the mounting of a roll of adhesive tape. A slit is provided along the wall of the cylindrical base member through which the tape is pulled out. On a section of the wall adjacent to the slit, a curved rectangular buckle is hinged to the wall, which can be flipped away from the slit to be held at an appropriate included angle with the wall. A cutting blade is provided along the outer edge of the buckle for cutting the tape while the end of the remaining tape is automatically adhered to the edge of the buckle. When the buckle is closed to the wall, the exposed segment of the tape is folded between the buckle and the section of wall.
    Type: Application
    Filed: November 3, 2006
    Publication date: May 8, 2008
    Inventor: Chi-Tsai CHANG
  • Publication number: 20080058021
    Abstract: A panel of a handphone is disclosed. The panel is characterized in that the keying pads for controlling are positioned at the upper section of the body of the phone, and the lower portion of the body is the positioned of the displaying screen, thereby in dialing, the palm of the user holds the body of the handphone, ensuring safe holding of the phone.
    Type: Application
    Filed: August 31, 2006
    Publication date: March 6, 2008
    Inventor: Chi-Tsai Chang
  • Publication number: 20070267307
    Abstract: A suspension device designed for a tool having a ring portion is provided. The major feature of the suspension device is that a one-piece hook member having three sequentially and flexibly linked portions is provided at the bottom of a suspension board. The three portions can be threaded through the ring portion of the tool and bended upward to form a U shape, thereby supporting the tool be the middle portion of the hook member. The outmost portion has a plug at its tip for joining with a socket member of the suspension device so that the tool cannot be removed from the hook member easily and manually.
    Type: Application
    Filed: April 27, 2006
    Publication date: November 22, 2007
    Inventor: Chi-Tsai CHANG
  • Publication number: 20070194204
    Abstract: A suspension device which prevents a suspended tool from burglary is disclosed. The suspension device comprises a suspension plate, and a clipping seat, connected to the bottom of the suspension plate, for clipping a tool, characterized in that the clipping seat has a hollow interior which is mounted with a rim mount directly encloses the external rim of the suspended tool such that the clipping tool can be locked and secured.
    Type: Application
    Filed: February 22, 2006
    Publication date: August 23, 2007
    Inventor: Chi-Tsai Chang
  • Patent number: 7175151
    Abstract: An anti-theft suspension device for screwdrivers or the alike is provided. The suspension device has a clamping member at the bottom of a suspension board. The clamping member has a hollow body with a tilted fixing plate installed inside. Both the hollow body and the fixing plate have openings allowing the tool to be inserted through. The tilted fixing plate is arranged so that the axis of its opening is not aligned with those of the clamping member's openings. When the tool is inserted through the openings, the friction between the tool and the fixing plate causes the axis of the fixing plate's opening to align with the openings of the clamping member and the tool thereby could be inserted easily. When the tool reaches its destination, a restoring force takes the fixing plate back to its original, tilted position and the tool is affixed to the fixing plate.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: February 13, 2007
    Inventor: Chi-Tsai Chang
  • Publication number: 20060280824
    Abstract: A glass repairer for summary repair of crack developed on the surface of a piece of glass is comprised of a positioning fixture adapted with a sucker each on both sides, a center hole to lock up an injection pipe containing repair liquid with its root to directly contact the crack with a rubber retaining ring and flushed against the surface of the glass with a packing packed to the root of the pipe to push against the surface of the glass in opposite direction; and a rotary extrusion device disposed at the top of the pipe to deliver the repair liquid.
    Type: Application
    Filed: June 9, 2005
    Publication date: December 14, 2006
    Inventor: Chi-Tsai Chang
  • Publication number: 20060214083
    Abstract: An anti-theft suspension device for screwdrivers or the alike is provided. The suspension device has a clamping member at the bottom of a suspension board. The clamping member has a hollow body with a tilted fixing plate installed inside. Both the hollow body and the fixing plate have openings allowing the tool to be inserted through. The tilted fixing plate is arranged so that the axis of its opening is not aligned with those of the clamping member's openings. When the tool is inserted through the openings, the friction between the tool and the fixing plate causes the axis of the fixing plate's opening to align with the openings of the clamping member and the tool thereby could be inserted easily. When the tool reaches its destination, a restoring force takes the fixing plate back to its original, tilted position and the tool is affixed to the fixing plate.
    Type: Application
    Filed: March 22, 2005
    Publication date: September 28, 2006
    Inventor: Chi-Tsai Chang
  • Patent number: 7104818
    Abstract: An electrical receptacle is provided herein which has a special locking mechanism preventing the plug from falling off. The receptacle mainly contains a body housed inside a sleeve. The body has at least a locking blade with a bended portion extended out of the body and pressed against the inside of the sleeve. A slot opening on the bended portion is roughly aligned with the slot of the body. When the prong of a plug is inserted into the sleeve, the sleeve presses the bended portion so that the slot opening and the slot on the body are completely aligned and the prong could go all the way into the slot of the body. The bended portion of the locking blade then springs back to a slant position to lock the prong. To unplug, the pulling force applied to the plug drags the body toward the sleeve which again presses the bended portion of the locking blade so that the prong could be pulled out of the slot of the body easily.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: September 12, 2006
    Inventor: Chi-Tsai Chang
  • Patent number: 7083458
    Abstract: A structure of a socket includes a socket body, a pressing device, a positioning member, an oscillating member, a covering plate and an actuating member, wherein the fixing member at least a slot in which is fitted the pressing device, the pressing device including an upper member, a lower and a spring mounted between the upper and lower members, the positioning member is mounted in a mouth of the slot, a top of the positioning member has a through hole, a lower end of the positioning member is provided with a pin, the pin of the positioning member is inserted into a hole of the oscillating member which is made of metal, the positioning member has a shoulder which extends out of the fixing frame, the fixing frame is provided with at least a tubular member, the actuating member is provided with a downwardly extending pin and a downwardly extending plate formed with an inclined edge, the actuating member is fitted on the covering plate, the actuating member has a top end protruded above the covering plate, the
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: August 1, 2006
    Inventor: Chi-Tsai Chang
  • Patent number: 6672555
    Abstract: An improved structure of a suspension device for displaying articles is disclosed. The present device for displaying comprises a suspension board and a fixing element for insertion at the bottom end neck portion thereof characterized in that the bottom end neck portion directly extended to an elastic fixing element formed from bending of a plate for the insertably mounting with a work piece, and one end of the plate is extended to a wider plate edge inclined at one direction having a small connection plate connected to the suspension board to form a body thereby the suspension device is safe to hang displaying articles.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: January 6, 2004
    Inventor: Chi Tsai Chang
  • Publication number: 20030205655
    Abstract: An improved structure of a suspension device for displaying articles is disclosed. The present device for displaying comprises a suspension board and a fixing element for insertion at the bottom end neck portion thereof characterized in that the bottom end neck portion directly extended to an elastic fixing element formed from bending of a plate for the insertably mounting with a work piece, and one end of the plate is extended to a wider plate edge inclined at one direction having a small connection plate connected to the suspension board to form a body thereby the suspension device is safe to hang displaying articles.
    Type: Application
    Filed: January 23, 2002
    Publication date: November 6, 2003
    Inventor: Chi Tsai Chang
  • Patent number: 6234824
    Abstract: The present invention relates to an improved structure of a socket which ensures a secured retention of a plug connected to the socket. The socket comprises a set of swinging rods being pivotally mounted at the central section of the bottom edge of the rod. A press-hold member enclosed a spring is disposed in between the space formed by the rods and is used to appropriately press and hold the pivotally connected bottoms edge of the rods such that the swinging rods can be opened (extended) or closed (retracted) about the pivoted point. When the prongs of a plug are inserted into the socket and pressed at the press and hold member, the bottom edge of the swinging rods which curved upward into a horizontal flat position are pressed. At this instance, the protrusion on the top end of the rods will be inserted into the hole provided at the end of the prongs as a result of forward movement of the swinging rods. Thus the prongs will not be dislocated when the plug is connected to the socket.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: May 22, 2001
    Inventor: Chi-Tsai Chang
  • Patent number: D592249
    Type: Grant
    Filed: December 28, 2008
    Date of Patent: May 12, 2009
    Inventor: Chi-Tsai Chang