Patents by Inventor Cheng-Pu Yang

Cheng-Pu Yang 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: 10744623
    Abstract: A ratchet wrench includes a handle and a head. A ratchet wheel is received in the through hole and a pawl located in a curved recess in the head is engaged with the ratchet wheel. A slot is defined through the top and bottom of the handle and a portion of the head. A control member is slidably engaged with the slot and controls the pawl. The control member includes a tongue which is engaged with a top groove of the ratchet wheel. When sliding the control member away from the ratchet wheel, the tongue is disengaged from the top groove and the pawl is shifted by the control member, so that the ratchet wheel is able to be picked out from the through hole.
    Type: Grant
    Filed: November 5, 2017
    Date of Patent: August 18, 2020
    Inventor: Cheng-Pu Yang
  • Publication number: 20190134788
    Abstract: A ratchet wrench includes a handle and a head. A ratchet wheel is received in the through hole and a pawl located in a curved recess in the head is engaged with the ratchet wheel. A slot is defined through the top and bottom of the handle and a portion of the head. A control member is slidably engaged with the slot and controls the pawl. The control member includes a tongue which is engaged with a top groove of the ratchet wheel. When sliding the control member away from the ratchet wheel, the tongue is disengaged from the top groove and the pawl is shifted by the control member, so that the ratchet wheel is able to be picked out from the through hole.
    Type: Application
    Filed: November 5, 2017
    Publication date: May 9, 2019
    Inventor: Cheng-Pu Yang
  • Patent number: 10232494
    Abstract: A ratchet wrench includes a body with a ratchet wheel, a pawl and a switch unit connected thereto. The pawl has a toothed portion on the front side thereof, and a concaved area in the rear side thereof. A first face and two second faces are defined in the concaved area. The first face is located between the two second faces. Each of two sidewalls of the concaved area has a third face. An engaging recess is defined between the second and third faces on the same side relative to the first face. The switch unit controls the pawl to move to engage the toothed portion of the pawl with the ratchet portion of the ratchet wheel so as to control the rotational operations of the ratchet wrench.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: March 19, 2019
    Inventor: Cheng-Pu Yang
  • Publication number: 20180311797
    Abstract: A ratchet wrench includes a ratchet wheel and a pawl received in the head thereof. Two control members are movably connected to the top and bottom of the head and retain the pawl. Each control member includes a restriction hole and the protrusion on the pawl is movably received in the restriction hole. When the pawl is not engaged with the ratchet wheel, the protrusions move in the two respective restriction holes, and the ratchet wheel is still located in the through hole of the head. When the control members move outward, the protrusions and the pawl are moved outward, so that the pawl is separated from the ratchet wheel, and the top face and bottom face of the pawl are separated from the lip of the ratchet wheel and the ring. The ratchet wheel can be removed from the through hole.
    Type: Application
    Filed: April 28, 2017
    Publication date: November 1, 2018
    Inventor: Cheng-Pu Yang
  • Publication number: 20180272504
    Abstract: A ratchet wrench includes a body with a ratchet wheel, a pawl and a switch unit connected thereto. The pawl has a toothed portion on the front side thereof, and a concaved area in the rear side thereof. A first face and two second faces are defined in the concaved area. The first face is located between the two second faces. Each of two sidewalls of the concaved area has a third face. An engaging recess is defined between the second and third faces on the same side relative to the first face. The switch unit controls the pawl to move to engage the toothed portion of the pawl with the ratchet portion of the ratchet wheel so as to control the rotational operations of the ratchet wrench.
    Type: Application
    Filed: March 22, 2017
    Publication date: September 27, 2018
    Inventor: Cheng-Pu YANG
  • Publication number: 20160229040
    Abstract: A wrench includes a first part having a first pivotal portion, a second part having a second pivotal portion, a connector pivotally connected in the first and second pivotal portions by two pins extending through the first and second pivotal portion and the two ends of the connector so as to pivotally connect the first part and the second part. Each of the first and second parts is pivotable relative to the connector.
    Type: Application
    Filed: February 6, 2015
    Publication date: August 11, 2016
    Inventors: Cheng-Pu Yang, Yu-Ting Hong, Chiou-Mai Chang
  • Patent number: 9321157
    Abstract: A wrench includes a first part having a first pivotal portion, a first recess and a first hole, a second part having a second pivotal portion, a second recess and a second hole, and a third part which is received in the first and second recesses. The third part has third, fourth and fifth holes, and a control slot. A control unit is connected to the third part and has four urging members, two first acting members and a second acting member. The urging members are located in the third and fourth holes, and engaged with the first and second holes to pivotably connect the first and third parts, and the second and third parts. The first acting members are located in the fifth hole. The second acting member is located in the control slot and controls the first acting members to contact and the urging members or not.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: April 26, 2016
    Inventor: Cheng-Pu Yang
  • Publication number: 20150352697
    Abstract: A ratchet wrench includes a body having a function head which has a first recess, a second recess and a third recess to respectively accommodate a ratchet wheel, a pawl and a switch unit. The ratchet wheel has a toothed portion and the pawl has a driving portion which is engaged with the toothed portion. The driving portion has multiple teeth and multiple curved teeth. The pawl has a curved recess, a protrusion and a contact face. The switch unit has a switch member, an end piece and a resilient member. The switch member controls the movement of the pawl to engage the curved teeth of the pawl with the teeth of the ratchet wheel to allow the ratchet wrench to optionally output torque in two directions.
    Type: Application
    Filed: June 7, 2014
    Publication date: December 10, 2015
    Inventor: Cheng-Pu Yang
  • Patent number: 9120212
    Abstract: A ratchet includes multiple ratchet teeth defined in the outer periphery thereof and a coated layer is coated along the outer periphery of the ratchet. A sand blasting device is used to blast sands to remove a part of the coated layer to define a circular endless opening on the coated layer, and the ratchet teeth protrude the coated layer from the openings.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: September 1, 2015
    Inventor: Cheng-Pu Yang
  • Publication number: 20150122087
    Abstract: A wrench includes a first part having a first pivotal portion, a first recess and a first hole, a second part having a second pivotal portion, a second recess and a second hole, and a third part which is received in the first and second recesses. The third part has third, fourth and fifth holes, and a control slot. A control unit is connected to the third part and has four urging members, two first acting members and a second acting member. The urging members are located in the third and fourth holes, and engaged with the first and second holes to pivotably connect the first and third parts, and the second and third parts. The first acting members are located in the fifth hole. The second acting member is located in the control slot and controls the first acting members to contact and the urging members or not.
    Type: Application
    Filed: November 7, 2013
    Publication date: May 7, 2015
    Inventor: Cheng-Pu Yang
  • Publication number: 20140216211
    Abstract: A ratchet includes multiple ratchet teeth defined in the outer periphery thereof and a coated layer is coated along the outer periphery of the ratchet. A sand blasting device is used to blast sands to remove a part of the coated layer to define a circular endless opening on the coated layer, and the ratchet teeth protrude the coated layer from the openings.
    Type: Application
    Filed: February 5, 2013
    Publication date: August 7, 2014
    Inventor: Cheng-Pu Yang
  • Patent number: 8646363
    Abstract: A ratchet includes multiple ratchet teeth defined in the outer periphery thereof and a coated layer is coated along the outer periphery of the ratchet. A laser device is used to generate a laser beam to remove a part of the coated layer to defined openings in the coated layer and the ratchet teeth protrude from the openings.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: February 11, 2014
    Inventors: Cheng-Pu Yang, Sen-Yuan Hou
  • Patent number: 8596170
    Abstract: The present invention discloses a single direction ratchet wrench which comprises a main body, a ratchet wheel, a pawl, an elastic element and a clip. The ratchet wheel and the pawl are lodged within the main body. The pawl has retaining cogs, concave surfaces and recess. One end of the elastic element is lodged within the second housing and the other end within the recess. The elastic element pushes the pawl with a particular angle so that the retaining cogs of the pawl are engaged with the ratchet teeth.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: December 3, 2013
    Inventor: Cheng-Pu Yang
  • Publication number: 20130125713
    Abstract: A ratchet includes multiple ratchet teeth defined in the outer periphery thereof and a coated layer is coated along the outer periphery of the ratchet. A laser device is used to generate a laser beam to remove a part of the coated layer to defined openings in the coated layer and the ratchet teeth protrude from the openings.
    Type: Application
    Filed: November 21, 2011
    Publication date: May 23, 2013
    Inventors: Cheng-Pu Yang, Sen-Yuan Hou
  • Patent number: 8291792
    Abstract: The present invention relates a ratchet wrench which comprises a main body, a ratchet wheel, a pawl, an elastic element and a clip. The main body has a first housing and a second housing. The ratchet wheel is rotatably lodged within the first housing and has a plurality of ratchet teeth. The pawl is confined within the second housing and a plurality of first retaining cogs and curved second retaining cogs are successively arranged on the front side of the pawl. The first and the second retaining cogs are defined to engage with the ratchet teeth. A recess, a first convex surface and a second convex surface are defined on the pawl. The second convex surface abuts against the wall of the second housing. The elastic element pushes the pawl with a particular angle so that the second convex surface is forced to abut against the wall of the second housing and the cogs of the pawl are engaged with the ratchet teeth.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: October 23, 2012
    Inventor: Cheng-Pu Yang
  • Publication number: 20120186402
    Abstract: The present invention relates a ratchet wrench which comprises a main body, a ratchet wheel, a pawl, an elastic element and a clip. The main body has a first housing and a second housing. The ratchet wheel is rotatably lodged within the first housing and has a plurality of ratchet teeth. The pawl is confined within the second housing and a plurality of first retaining cogs and curved second retaining cogs are successively arranged on the front side of the pawl. The first and the second retaining cogs are defined to engage with the ratchet teeth. A recess, a first convex surface and a second convex surface are defined on the pawl. The second convex surface abuts against the wall of the second housing. The elastic element pushes the pawl with a particular angle so that the second convex surface is forced to abut against the wall of the second housing and the cogs of the pawl are engaged with the ratchet teeth.
    Type: Application
    Filed: January 26, 2011
    Publication date: July 26, 2012
    Inventor: Cheng-Pu Yang
  • Publication number: 20120000323
    Abstract: The present invention discloses a single direction ratchet wrench which comprises a main body, a ratchet wheel, a pawl, an elastic element and a clip. The ratchet wheel and the pawl are lodged within the main body. The pawl has retaining cogs, concave surfaces and recess. One end of the elastic element is lodged within the second housing and the other end within the recess. The elastic element pushes the pawl with a particular angle so that the retaining cogs of the pawl are engaged with the ratchet teeth.
    Type: Application
    Filed: June 20, 2011
    Publication date: January 5, 2012
    Inventor: Cheng-Pu Yang
  • Publication number: 20110049391
    Abstract: A storage container includes a container body having an inner portion provided with a receiving chamber, a top cover removably mounted on the container body, a circuit board mounted in the top cover, an ultraviolet light mounted on the circuit board and directed toward the receiving chamber of the container body, a control switch mounted on the circuit board and electrically connected with the ultraviolet light, at least one battery mounted on the circuit board and electrically connected with the control switch and the ultraviolet light, and a push button mounted on the top cover and contacting with the control switch. Thus, the ultraviolet light provides a sterilizing function to the articles placed in the receiving chamber of the container body so as to achieve a sanitary purpose.
    Type: Application
    Filed: September 1, 2009
    Publication date: March 3, 2011
    Inventor: Cheng-Pu Yang
  • Patent number: D814258
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: April 3, 2018
    Inventor: Cheng-Pu Yang