Patents by Inventor Chao-Chih Liu

Chao-Chih Liu 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: 20210129209
    Abstract: A method for making a socket and a pawl of a ratchet wrench includes a step of preparing: preparing a socket and a pawl; a step of first treatment: making the socket to have a body, a reinforcement portion and a driving hole, the driving hole defined axially through the body and having an axis, multiple ridges extending axially and inward from the inner periphery of the driving hole, the body having outer teeth formed on the outer periphery thereof, the reinforcement portion being an annular portion and formed along one of two ends of the body, the socket being treated by way of forging, the pawl having a toothed portion and a recess, the toothed portion engaged with the outer teeth of the socket, the pawl being made by way of metal injection molding, and a step of secondary treatment: polishing the socket and the pawl.
    Type: Application
    Filed: October 31, 2019
    Publication date: May 6, 2021
    Inventor: Chao-Chih Liu
  • Publication number: 20200329855
    Abstract: A brush device includes a housing having an exit end, an entrance end, and a room defined in the housing. A propeller unit is located in the room and includes a shaft with multiple first blades on an outside thereof. The shaft includes a driving head extending through the exit end of the housing. The driving head is connected with a brush so that the brush is rotated by water entering from the entrance and exiting from the exit end.
    Type: Application
    Filed: April 17, 2019
    Publication date: October 22, 2020
    Inventor: Chao-Chih Liu
  • Patent number: 10493615
    Abstract: A hand tool includes a handle and a head which includes a protrusion having a toothed portion. The handle includes a connection portion formed on one end thereof. Two lugs extend from the connection portion to form a recess between the two lugs and the connection portion. Two ribs respectively extend from the connection portion and ARE located between the two lugs. The two ribs are integral with the two lugs and the connection portion. The protrusion of the head is pivotably connected between the two lugs and the toothed portion is engaged with a control unit located in the recess. The two ribs restrict the angle that the head is pivoted relative to the handle.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: December 3, 2019
    Inventor: Chao-Chih Liu
  • Patent number: 10471574
    Abstract: A socket includes a first section and a second section which formed at the first end of the first section. The first section includes multiple side faces located on the outside thereof, and a corner portion is formed between each of two adjacent side faces. At least one of the corner portions includes a recess defined therein, and a resilient positioning unit is located in the recess and partially protrudes beyond the open end of the recess. A passage is defined axially through the first and second sections. The resilient positioning unit in the at least one of the corner portions does not affect the feature to secure the socket to the wrench.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: November 12, 2019
    Inventor: Chao-Chih Liu
  • Patent number: 10398054
    Abstract: A server includes a casing, a plurality of tensile elements and a plurality of modules. The casing has an opening and a chamber communicating with each other. The tensile elements are disposed on the casing and at least partially cover the opening. Each of modules is configured to abut against the corresponding tensile element, such that the corresponding tensile element at least partially extends elastically towards the chamber. The modules penetrate through the opening and enter into the chamber in order to fix the modules to the casing.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: August 27, 2019
    Assignees: Inventec (Pudong) Technology Corporation, INVENTEC CORPORATION
    Inventor: Chao-Chih Liu
  • Patent number: 10353444
    Abstract: A hard disk fixing assembly configured to be disposed in casing includes base frame, pivotable frame, hard disk bearing frame, at least one first link and handle. Base frame includes bottom part and elastic part. Bottom part is configured to be fixed to casing. Elastic part is connected to bottom part. Pivotable frame is pivotably disposed on base frame. Hard disk bearing frame is slidably disposed on pivotable frame and hard disk bearing frame bears at least one hard disk. Two opposite sides of first link are respectively pivotally connected to hard disk bearing frame and base frame. Handle is pivotably disposed on hard disk bearing frame. When handle is pivoted, elastic part forces pivotable frame to move hard disk bearing frame from level position to inclined position.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: July 16, 2019
    Assignees: INVENTEC (PUDONG) TECHNOLOGY CORPORATION, INVENTEC CORPORATION
    Inventor: Chao-Chih Liu
  • Publication number: 20190210210
    Abstract: A hand tool includes a handle and a head which includes a protrusion having a toothed portion. The handle includes a connection portion formed on one end thereof. Two lugs extend from the connection portion to form a recess between the two lugs and the connection portion. Two ribs respectively extend from the connection portion and ARE located between the two lugs. The two ribs are integral with the two lugs and the connection portion. The protrusion of the head is pivotably connected between the two lugs and the toothed portion is engaged with a control unit located in the recess. The two ribs restrict the angle that the head is pivoted relative to the handle.
    Type: Application
    Filed: January 10, 2018
    Publication date: July 11, 2019
    Inventor: Chao-Chih Liu
  • Publication number: 20190202038
    Abstract: A socket includes a first section and a second section which formed at the first end of the first section. The first section includes multiple side faces located on the outside thereof, and a corner portion is formed between each of two adjacent side faces. At least one of the corner portions includes a recess defined therein, and a resilient positioning unit is located in the recess and partially protrudes beyond the open end of the recess. A passage is defined axially through the first and second sections. The resilient positioning unit in the at least one of the corner portions does not affect the feature to secure the socket to the wrench.
    Type: Application
    Filed: January 2, 2018
    Publication date: July 4, 2019
    Inventor: Chao-Chih Liu
  • Publication number: 20190105760
    Abstract: A ratchet wrench includes a handle and a head. A rotary member is rotatably received in the through hole of the head, and a switch unit is pivotably located in the reception recess communicating with the through hole. The rotary member includes a ratchet portion and an engaging member which has multiple first notches. The engaging member protrudes beyond the through hole. The switch unit includes a switch member and a fixing member respectively connected to the top and the bottom of the head. A pawl is controlled by the switch member and engaged with the ratchet portion. A latch is slidably connected to the switch member so as to be engaged with one of the first notches to allow the ratchet wrench to output high torque.
    Type: Application
    Filed: October 5, 2017
    Publication date: April 11, 2019
    Inventor: Chao-Chih Liu
  • Patent number: 10228734
    Abstract: A removable hard disk carrier includes an L-shaped support, a flexible support, and a side support. The flexible support is fixedly connected to an end portion of the L-shaped support. The side support is fixedly connected to an end portion of the flexible support and is detachably engaged with another end portion of the L-shaped support. Therein, after the side support is detachably engaged with the L-shaped support, the L-shaped support, the flexible support, and the side support form an accommodating space therebetween and can fix a hard disk in the accommodating space. When the side support and the L-shaped support are not engaged, the side support can move away from the L-shaped support due to the resilient deformation of the flexible support, so that the hard disk can be detached from the removable hard disk carrier.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: March 12, 2019
    Assignees: Inventec (Pudong) Technology Corp., Inventec Corporation
    Inventors: Han-Chih Hsieh, Hsueh-Chan Li, Chih-Lung Liao, Chao-Chih Liu
  • Patent number: 10016888
    Abstract: A wrench with driver in storage includes an operating section having one end thereof provided with a head for movably receiving a driver and the other end thereof provided with a combining part; a connecting section removably combined to the combining part; a handle having a containing space for storing the driver mounted around the connecting section with an end part of the handle mounted around the combining part; and a movable cover, disposed on the handle for sealing the containing space. The driver is stored in the handle of the wrench, facilitating the convenience of usage.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: July 10, 2018
    Inventor: Chao-Chih Liu
  • Patent number: D821833
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: July 3, 2018
    Inventor: Chao-Chih Liu
  • Patent number: D832068
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: October 30, 2018
    Inventor: Chao-Chih Liu
  • Patent number: D835483
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: December 11, 2018
    Inventor: Chao-Chih Liu
  • Patent number: D856126
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: August 13, 2019
    Inventor: Chao-Chih Liu
  • Patent number: D858233
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: September 3, 2019
    Inventor: Chao-Chih Liu
  • Patent number: D941104
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: January 18, 2022
    Inventor: Chao-Chih Liu
  • Patent number: D941105
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: January 18, 2022
    Inventor: Chao-Chih Liu
  • Patent number: D943373
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: February 15, 2022
    Inventor: Chao-Chih Liu
  • Patent number: D944613
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: March 1, 2022
    Inventor: Chao-Chih Liu