Patents by Inventor ZHE-PING ZHANG
ZHE-PING ZHANG 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).
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Patent number: 10543586Abstract: A ratchet wrench includes a body, a ratchet wheel, a pawl, a ring, a top clip and a bottom clip. The body includes a through hole which defines through the top and the bottom of the body. A top recessed area and a bottom recessed area are respectively defined in the top and the bottom of the body. A recess is defined in the inner periphery of the through hole and a protrusion with a receiving slot extends from one end of the recess. A resilient member is received in the receiving slot to bias the pawl in the recess to engage with the ratchet wheel. The ring is engaged with the top recessed area. The top clip is engaged with the top recessed area and clips the ratchet wheel. The bottom clip is engaged with the bottom recessed area and clips the ratchet wheel.Type: GrantFiled: February 3, 2017Date of Patent: January 28, 2020Inventors: Chun-Wei Yang, Zhe-Ping Zhang
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Publication number: 20190358788Abstract: A ratchet wrench includes at least one ratchet mechanism. The at least one ratchet mechanism comprises a body, a ratchet wheel, a pawl, a switch unit, a ring and a top clip. The body includes a through hole, a first recess, a second recess and a top recessed area to accommodate the ratchet wheel, the pawl, the switch unit, the ring and the top clip. The ratchet wheel has a first pivotal portion, a top groove, a second pivotal portion and a restricting protrusion. The switch unit is pivoted to control the movement of the pawl in the first recess. The ring is located in the top recessed area and has a fourth pivotal portion connected to the first pivotal portion. The top clip and the restricting protrusion on two ends of the ratchet wheel restrict the ring and the ratchet wheel in the through hole.Type: ApplicationFiled: May 28, 2018Publication date: November 28, 2019Inventors: CHUN-WEI YANG, ZHE-PING ZHANG
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Patent number: 10300583Abstract: A ratchet wrench includes a body, a ratchet wheel, a pawl, a switch unit, a ring, a top clip and a bottom clip. The body includes a through hole, a first recess, a second recess, a top recessed area and a bottom recessed area to accommodate the ratchet wheel, the pawl, the switch unit, the ring, the top clip and the bottom clip. The ratchet wheel has a first pivotal portion, a top groove, a second pivotal portion and a bottom groove. The pawl has a notch. The switch unit is pivoted to control the movement of the pawl in the first recess. The ring is located in the top recessed area and has a fourth pivotal portion connected to the first pivotal portion. The top clip and the bottom clip respectively clip two ends of the ratchet wheel to restrict the ring and the ratchet wheel.Type: GrantFiled: February 3, 2017Date of Patent: May 28, 2019Assignees: ZHE JIANG YIYANG TOOL MANUFACTURE CO., LTDInventors: Chun-Wei Yang, Zhe-Ping Zhang
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Publication number: 20190091838Abstract: A ratchet wrench includes a head having a first hole and second hole defined through the top and the bottom of the head. The second hole communicates with the inner periphery of the first hole. A ratchet wheel and a pawl are respectively located in the first and second holes. The pawl is engaged with the ratchet wheel. A top recessed area and a bottom recessed area are respectively defined in the top and the bottom of the head. Two top caps are engaged with the top recessed area, and two bottom caps are engaged with the bottom recessed area. A top clip and a bottom clip are respectively engaged with the top and bottom of the ratchet wheel. The manufacturing and installation of the ratchet wrench are easy.Type: ApplicationFiled: September 22, 2017Publication date: March 28, 2019Inventors: CHUN-WEI YANG, ZHE-PING ZHANG
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Publication number: 20180250796Abstract: A ratchet wrench includes a body which has a through hole, a first recess, a second recess, a top recessed area and a bottom recessed area to accommodate the ratchet wheel, the pawl, the switch unit, the top ring, the bottom ring, the top clip and the bottom clip. The ratchet wheel has a first pivotal portion, a top groove, a second pivotal portion and a bottom groove. The pawl has a notch. The switch unit is pivoted to control the movement of the pawl in the first recess. The top ring is located in the top recessed area and the bottom ring is located in the bottom recessed area. The top clip and the bottom clip respectively position the ratchet wheel, and restrict the top ring and the bottom ring from dropping from the body.Type: ApplicationFiled: March 5, 2017Publication date: September 6, 2018Inventors: CHUN-WEI YANG, ZHE-PING ZHANG
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Publication number: 20180250797Abstract: A ratchet wrench includes a body, a ratchet wheel, a pawl, a top ring, a top clip, bottom ring and a bottom clip. The body includes a through hole defined through the top and the bottom of the body. A top recessed area and a bottom recessed area are respectively defined in the top and the bottom of the body. A recess is defined in the inner periphery of the through hole. A protrusion with a receiving slot extends from one end of the recess. A resilient member is received in the receiving slot to bias the pawl to engage with the ratchet wheel. The top ring is engaged with the top recessed area. The bottom ring is engaged with the bottom recessed area. The top clip and the bottom clip are respectively engaged with the top and bottom recessed areas. The opt ring is pressed by the top clip.Type: ApplicationFiled: March 5, 2017Publication date: September 6, 2018Inventors: CHUN-WEI YANG, ZHE-PING ZHANG
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Publication number: 20180222020Abstract: A ratchet wrench includes a body, a ratchet wheel, a pawl, a switch unit, a ring, a top clip and a bottom clip. The body includes a through hole, a first recess, a second recess, a top recessed area and a bottom recessed area to accommodate the ratchet wheel, the pawl, the switch unit, the ring, the top clip and the bottom clip. The ratchet wheel has a first pivotal portion, a top groove, a second pivotal portion and a bottom groove. The pawl has a notch. The switch unit is pivoted to control the movement of the pawl in the first recess. The ring is located in the top recessed area and has a fourth pivotal portion connected to the first pivotal portion. The top clip and the bottom clip respectively clip two ends of the ratchet wheel to restrict the ring and the ratchet wheel.Type: ApplicationFiled: February 3, 2017Publication date: August 9, 2018Inventors: CHUN-WEI YANG, ZHE-PING ZHANG
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Patent number: 9975222Abstract: A ratchet wrench includes a head with two lugs extending therefrom, and a ratchet wheel and a pawl are received in the head. A handle has a tongue which is pivotably inserted between the two lugs, and a resilient unit is connected to the tongue. The resilient unit is engaged with a concavity in the rear side of the pawl to push the pawl to be engaged with the ratchet wheel. The handle has two blocks on the top and the bottom thereof, each block has two inclined faces which contact the end faces of the two lugs when pivoting the handle. The resilient unit is moved with the tongue so as to change the position of the pawl to decide the ratcheting direction of the ratchet wrench.Type: GrantFiled: May 25, 2015Date of Patent: May 22, 2018Inventors: Chun-Wei Yang, Zhe-Ping Zhang
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Patent number: 9884409Abstract: A pipe wrench includes a fixed jaw with alternatively located first recesses and first driving faces defined in the inner side thereof. A pivotal member is pivotably connected to the fixed jaw and a resilient member is biased between the fixed jaw and the pivotal member. The pivotal member has alternatively located third recesses and second driving faces. A hexagonal space is defined between the first and second driving faces. The end portion of the pivotal member is inserted into a second recess defined in the inner side of the fixed jaw. The object is clamped in the hexagonal space, and the pivotal member can be pivoted away from the fixed jaw. The pipe wrench is able to quickly clamp and dismounted from the object.Type: GrantFiled: January 15, 2016Date of Patent: February 6, 2018Assignees: ZHE JIANG YIYANG TOOL MANUFACTURE CO., LTDInventors: Chun-Wei Yang, Zhe-Ping Zhang, Qing-Jun Qian
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Patent number: 9868190Abstract: A ratchet wrench includes a body, a driving unit, a control unit, a first rotary unit, a second rotary unit and a second connector. The body has a first recess and a restriction portion. The driving unit is connected to the working end of the body and is driven by the control unit to allow the wrench to be rotated clockwise or counter clockwise. The first rotary unit has a first rotary rod, a third toothed ring, a sleeve, a first clip, a second resilient member and a bead. The second rotary unit has a second rotary rod, two caps, a second resilient member, a third rotary rod and a handle. The second connector is located in the restriction portion. The second connector is located corresponding to the groove of the first rotary rod, so that the first rotary rod does not drop from the first recess.Type: GrantFiled: April 21, 2015Date of Patent: January 16, 2018Assignees: ZHE JIANG YIYANG TOOL MANUFACTURE CO., LTD., CHUN-WEI YANG, ZHE-PING ZHANGInventors: Chun-Wei Yang, Zhe-Ping Zhang
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Publication number: 20170203417Abstract: A pipe wrench includes a fixed jaw with alternatively located first recesses and first driving faces defined in the inner side thereof. A pivotal member is pivotably connected to the fixed jaw and a resilient member is biased between the fixed jaw and the pivotal member. The pivotal member has alternatively located third recesses and second driving faces. A hexagonal space is defined between the first and second driving faces. The end portion of the pivotal member is inserted into a second recess defined in the inner side of the fixed jaw. The object is clamped in the hexagonal space, and the pivotal member can be pivoted away from the fixed jaw. The pipe wrench is able to quickly clamp and dismounted from the object.Type: ApplicationFiled: January 15, 2016Publication date: July 20, 2017Inventors: CHUN-WEI YANG, ZHE-PING ZHANG, QING-JUN QIAN
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Publication number: 20170144276Abstract: A ratchet wrench includes a body, a ratchet wheel, a pawl, a ring, a top clip and a bottom clip. The body includes a through hole which defines through the top and the bottom of the body. A top recessed area and a bottom recessed area are respectively defined in the top and the bottom of the body. A recess is defined in the inner periphery of the through hole and a protrusion with a receiving slot extends from one end of the recess. A resilient member is received in the receiving slot to bias the pawl in the recess to engage with the ratchet wheel. The ring is engaged with the top recessed area. The top clip is engaged with the top recessed area and clips the ratchet wheel. The bottom clip is engaged with the bottom recessed area and clips the ratchet wheel.Type: ApplicationFiled: February 3, 2017Publication date: May 25, 2017Inventors: CHUN-WEI YANG, ZHE-PING ZHANG
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Publication number: 20170113332Abstract: A ratchet wrench includes a head with a ratchet wheel received in the first room in the head. A second room is defined in the inner periphery of the first room. The head has a top closed portion and a bottom closed portion, the second room is located between the top and bottom closed portions. A pawl is located in the second room and a resilient member is biased between the pawl and the inside of the second room so as to engage the pawl with the ratchet wheel. A positioning hole is defined through the top and bottom closed portions. A pin extends through the positioning hole and has a section located in the second room to restrict the movement of the pawl in the second room. The pawl can be made smaller than the pawls used in the conventional ratchet wrenches.Type: ApplicationFiled: October 21, 2015Publication date: April 27, 2017Inventors: CHUN-WEI YANG, ZHE-PING ZHANG
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Publication number: 20160346905Abstract: A ratchet wrench includes a head with two lugs extending therefrom, and a ratchet wheel and a pawl are received in the head. A handle has a tongue which is pivotably inserted between the two lugs, and a resilient unit is connected to the tongue. The resilient unit is engaged with a concavity in the rear side of the pawl to push the pawl to be engaged with the ratchet wheel. The handle has two blocks on the top and the bottom thereof, each block has two inclined faces which contact the end faces of the two lugs when pivoting the handle. The resilient unit is moved with the tongue so as to change the position of the pawl to decide the ratcheting direction of the ratchet wrench.Type: ApplicationFiled: May 25, 2015Publication date: December 1, 2016Inventors: CHUN-WEI YANG, ZHE-PING ZHANG
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Publication number: 20160311088Abstract: A ratchet wrench includes a body, a driving unit, a control unit, a first rotary unit, a second rotary unit and a second connector. The body has a first recess and a restriction portion. The driving unit is connected to the working end of the body and is driven by the control unit to allow the wrench to be rotated clockwise or counter clockwise. The first rotary unit has a first rotary rod, a third toothed ring, a sleeve, a first clip, a second resilient member and a bead. The second rotary unit has a second rotary rod, two caps, a second resilient member, a third rotary rod and a handle. The second connector is located in the restriction portion. The second connector is located corresponding to the groove of the first rotary rod, so that the first rotary rod does not drop from the first recess.Type: ApplicationFiled: April 21, 2015Publication date: October 27, 2016Inventors: CHUN-WEI YANG, ZHE-PING ZHANG
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Patent number: 9381623Abstract: An open wrench includes two heads overlapped to each other, two covers connected to top and bottom of the heads, and a pawl. Each head has a first recess, a recessed section, a contact face, and a second recess. The pawl is movably located within the second recess. The pawl has a first engaging portion, a second engaging portion, a reception slot and a curved slot. A resilient member is located in the reception slot. A pin extends through the covers and the curved slot. The pin contacts one end of the resilient member and contacts one inner end of the curved slot. When an object is located in the first recess, the contact face contacts one side of the object, and the first and second engaging portions contact two adjacent sides of the object. The object can be rotated continuously.Type: GrantFiled: October 23, 2015Date of Patent: July 5, 2016Assignee: ZHE JIANG YIYANG TOOL MANUFACTURE CO., LTDInventors: Chun-Wei Yang, Zhe-Ping Zhang
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Patent number: 8607675Abstract: A torque wrench includes a driving head, a hollow handle, compression unit, an adjustment unit, an index unit and a display unit. The driving head and the handle are pivotably connected to each other. The compression unit has a resilient member and an end piece which contacts the driving head. The adjustment unit adjusts the length of the resilient member to set the torque of the wrench. The index unit has a first index and a second index, both of which are moved with the movement of the adjustment unit. The movement of the first index is detected by the display unit and transferred into digits to display the value of the torque. The second index is cooperated with the marks of the scale member to display the value of the torque.Type: GrantFiled: March 21, 2011Date of Patent: December 17, 2013Inventors: Ting-Ko Tsai, Chun-Wei Yang, Zhe-Ping Zhang
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Publication number: 20130239758Abstract: An open wrench includes an elongate body with a head located on an end of the body. The head includes two jaws and a mounting hole is defined between the two jaws. One of the jaws has a curved recess, a curved guide slot and a notch defined in the inside thereof. The other jaw has a curved convex contact face protruding from the inside thereof. An engaging member is movably located in the curved guide slot and a resilient member biases the engaging member which performs as a ratchet wrench. Two covers are respectively connected to the top and the bottom of the head to cover up the engaging member and the resilient member.Type: ApplicationFiled: March 19, 2012Publication date: September 19, 2013Applicants: ZHE JIANG YIYANG TOOL MANUFACTURE CO.,LTDInventors: CHUN-WEI YANG, ZHE-PING ZHANG
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Publication number: 20120240735Abstract: A torque wrench includes a driving head, a hollow handle, compression unit, an adjustment unit, an index unit and a display unit. The driving head and the handle are pivotably connected to each other. The compression unit has a resilient member and an end piece which contacts the driving head. The adjustment unit adjusts the length of the resilient member to set the torque of the wrench. The index unit has a first index and a second index, both of which are moved with the movement of the adjustment unit. The movement of the first index is detected by the display unit and transferred into digits to display the value of the torque. The second index is cooperated with the marks of the scale member to display the value of the torque.Type: ApplicationFiled: March 21, 2011Publication date: September 27, 2012Applicants: ZHE JIANG YIYANG TOOL MANUFACTURE CO.,LTDInventors: TING-KO TSAI, CHUN-WEI YANG, ZHE-PING ZHANG