Patents by Inventor Jyun-Wun LIAO

Jyun-Wun LIAO 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: 9744652
    Abstract: A ratchet wrench includes a head which has a through hole, a first recess, a second recess and a closed portion. A ratchet member is located in the through hole and is engaged with a pawl in the first recess. The control unit is located in the second recess and has a control member, an engaging member and a resilient member. The control member has a cylindrical rod with a slot and a notch. The engaging member is located in the slot and has a receiving recess, two contact areas and a recessed section. The resilient member is located in the notch and the receiving recess. The engaging member is restricted by the closed portion and biased by engaging member which restricts the cylindrical rod so that the control member is rotatably located in the second recess to push the engaging member to move the pawl.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: August 29, 2017
    Inventor: Jyun-Wun Liao
  • Publication number: 20170036325
    Abstract: A ratchet wrench includes a head which has a through hole, a first recess, a second recess and a closed portion. A ratchet member is located in the through hole and is engaged with a pawl in the first recess. The control unit is located in the second recess and has a control member, an engaging member and a resilient member. The control member has a cylindrical rod with a slot and a notch. The engaging member is located in the slot and has a receiving recess, two contact areas and a recessed section. The resilient member is located in the notch and the receiving recess. The engaging member is restricted by the closed portion and biased by engaging member which restricts the cylindrical rod so that the control member is rotatably located in the second recess to push the engaging member to move the pawl.
    Type: Application
    Filed: August 4, 2015
    Publication date: February 9, 2017
    Inventor: JYUN-WUN LIAO
  • Patent number: 8950296
    Abstract: A ratcheting wrench includes a driving head having a receiving hole defined through the driving head. The driving head includes an inner flange and multiple teeth. The inner flange inwardly extends from an inner surface of the receiving hole. The multiple teeth extend from the inner surface of the receiving hole. Each tooth has a bottom connected to the inner flange and includes an upper edge, a first side, a second side and a beveled ridge. The beveled ridge extends from a juncture between the first side and the upper edge to the inner flange, gradually and inwardly protrudes from an inner surface of the tooth, and includes an engaging bevel and a guiding bevel. The wrench body continuously rotates a fastener without detaching from the fastener.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: February 10, 2015
    Inventor: Jyun-Wun Liao
  • Publication number: 20120137836
    Abstract: A ratcheting wrench includes a driving head having a receiving hole defined through the driving head. The driving head includes an inner flange and multiple teeth. The inner flange inwardly extends from an inner surface of the receiving hole. The multiple teeth extend from the inner surface of the receiving hole. Each tooth has a bottom connected to the inner flange and includes an upper edge, a first side, a second side and beveled ridge. The beveled ridge extends from a juncture between the first side and the upper edge to the inner flange, gradually and inwardly protrudes from an inner surface of the tooth, and includes an engaging bevel and a guiding bevel. The present invention allows the wrench body to continuously rotate a fastener without detaching from the fastener.
    Type: Application
    Filed: November 21, 2011
    Publication date: June 7, 2012
    Inventor: Jyun-Wun LIAO
  • Publication number: 20090255386
    Abstract: A torque socket essentially comprises an inner socket, and an outer socket. Besides a function of torque value setting and adjustment, the torque socket utilizes a ratchet structure design to produce a sound to warn the user, when the torque applied by the torque socket has reached a predetermined value, allowing the user to know the torque applied to the fastener by the torque wrench has reached the predetermined value easily. Further, the torque socket is simple in structure, thus reducing the production and assembly cost.
    Type: Application
    Filed: April 13, 2009
    Publication date: October 15, 2009
    Inventor: Jyun-Wun LIAO