Patents by Inventor Ching-Shu Wang

Ching-Shu Wang 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: 20190184531
    Abstract: A hose clamp pliers includes a pliers assembly and a clamping device. The clamping device includes a first clamping element and a second clamping element. The second clamping element is movable with respect to the first clamping element for clamping. The first clamping element has a first stopping wall and a second stopping wall. The second clamping element has a third stopping wall and a fourth stopping wall. The first stopping wall and the third stopping wall face each other. The second stopping wall and the fourth stopping wall extend toward each other. The junction between the first stopping wall and the second stooping wall and the junction between the third stopping wall and the fourth stopping wall are adapted for the leg portions of the hose clamp to abut against.
    Type: Application
    Filed: December 15, 2017
    Publication date: June 20, 2019
    Inventor: Ching-Shu Wang
  • Publication number: 20060162509
    Abstract: An improved pipe wrench assembly includes a first and a second arms, a first and a second movable wrench members disposed on the front ends of the first and second arms respectively, a guide plate separately extended from the rear ends of the first and second movable wrench members, a sliding groove disposed on the guide plate, and an insert pin pivotally coupled in the sliding groove; wherein another end of the insert pin of the first movable wrench member is fixed to a second handle and another end of the insert pin of the second movable wrench member is fixed to a first handle. With the insert pin and the sliding groove, the first and second movable wrench members can produce a parallel clamping movement when the pipe wrench is clamped and released.
    Type: Application
    Filed: January 24, 2005
    Publication date: July 27, 2006
    Inventor: Ching-Shu Wang
  • Patent number: 6952984
    Abstract: An open end wrench includes a fixed jaw, the fixed jaw having a dovetail tongue and a U-groove extended along the width thereof, a sliding groove formed in the dovetail tongue, and a stop block with a pin disposed at one end of the U-groove, a movable jaw, the movable jaw having a dovetail groove coupled to the dovetail tongue, a stop rod perpendicularly inserted into the sliding groove and movable with the movable jaw along the sliding groove, and a stop block with a pin disposed at one end of the U-groove, and a spring member received in the U-grooves of the fixed jaw and movable jaw and supported with the two ends thereof on the pin at the stop block of the fixed jaw and the pin at the stop block of the movable jaw.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: October 11, 2005
    Inventor: Ching-Shu Wang
  • Patent number: 6834569
    Abstract: A crescent wrench is constructed to include a fixed jaw, a transmission gear wheel pivoted to the fixed jaw, a movable jaw meshed with the transmission gear wheel, a sliding track structure adapted to guide movement of the movable jaw horizontally relative to the fixed jaw, and a handle detachably coupled to the transmission gear wheel and adapted for turning the transmission gear wheel to move the movable jaw horizontally relative to the fixed jaw.
    Type: Grant
    Filed: August 12, 2002
    Date of Patent: December 28, 2004
    Inventor: Ching-Shu Wang
  • Publication number: 20040194587
    Abstract: An open end wrench includes a fixed jaw, the fixed jaw having a dovetail tongue and a U-groove extended along the width thereof, a sliding groove formed in the dovetail tongue, and a stop block with a pin disposed at one end of the U-groove, a movable jaw, the movable jaw having a dovetail groove coupled to the dovetail tongue, a stop rod perpendicularly inserted into the sliding groove and movable with the movable jaw along the sliding groove, and a stop block with a pin disposed at one end of the U-groove, and a spring member received in the U-grooves of the fixed jaw and movable jaw and supported with the two ends thereof on the pin at the stop block of the fixed jaw and the pin at the stop block of the movable jaw.
    Type: Application
    Filed: April 15, 2004
    Publication date: October 7, 2004
    Inventor: Ching-Shu Wang
  • Patent number: 6799493
    Abstract: An open end wrench including a fixed jaw and a movable jaw keeping between them a constant relation of lateral slide to each other; a fluted surface being provided at the lower edge of the movable jaw; a spring being adapted between two jaws to define a clamping space under normal status; a locking gear permitting reciprocally flexible circulation having a ratchet to engage the fluted surface of the movable jaw under normal status and a dialer to keep the ratchet separating from the fluted surface being respectively provided at both ends.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: October 5, 2004
    Inventor: Ching-Shu Wang
  • Publication number: 20040107804
    Abstract: An open end wrench including a fixed jaw and a movable jaw keeping between them a constant relation of lateral slide to each other; a fluted surface being provided at the lower edge of the movable jaw; a spring being adapted between two jaws to define a clamping space under normal status; a locking gear permitting reciprocally flexible circulation having a ratchet to engage the fluted surface of the movable jaw under normal status and a dialer to keep the ratchet separating from the fluted surface being respectively provided at both ends.
    Type: Application
    Filed: December 5, 2002
    Publication date: June 10, 2004
    Inventor: Ching-Shu Wang
  • Patent number: 6698734
    Abstract: The present invention discloses a clamp assembly having a pair of clamp handles and a clipping member or a poking member, and the clamp handles use an extendible clamp wire set to control the clipping member or the poking member, so that the tool can be extended into a small narrow operating space for its application.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: March 2, 2004
    Inventor: Ching-Shu Wang
  • Publication number: 20040025647
    Abstract: A crescent wrench is constructed to include a fixed jaw, a transmission gear wheel pivoted to the fixed jaw, a movable jaw meshed with the transmission gear wheel, a sliding track structure adapted to guide movement of the movable jaw horizontally relative to the fixed jaw, and a handle detachably coupled to the transmission gear wheel and adapted for turning the transmission gear wheel to move the movable jaw horizontally relative to the fixed jaw.
    Type: Application
    Filed: August 12, 2002
    Publication date: February 12, 2004
    Inventor: Ching-Shu Wang
  • Patent number: 6450489
    Abstract: A work clamp for wood-working machines, includes a guide bar, a fixed clamping plate fixedly mounted on the guide bar, a movable clamping plate slidably mounted on the guide bar and moved relative to the fixed clamping plate to hold down workpiece with the fixed clamping plate, and a control device adapted to control movement of the movable clamping plate on the guide bar relative to the fixed clamping plate and to lock the movable clamping plate in the desired position.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: September 17, 2002
    Inventor: Ching-Shu Wang
  • Publication number: 20020125624
    Abstract: A work clamp for wood-working machines, includes a guide bar, a fixed clamping plate fixedly mounted on the guide bar, a movable clamping plate slidably mounted on the guide bar and moved relative to the fixed clamping plate to hold down workpiece with the fixed clamping plate, and a control device adapted to control movement of the movable clamping plate on the guide bar relative to the fixed clamping plate and to lock the movable clamping plate in the desired position.
    Type: Application
    Filed: March 12, 2001
    Publication date: September 12, 2002
    Inventor: Ching-Shu Wang
  • Patent number: D857471
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: August 27, 2019
    Inventor: Ching-Shu Wang