Patents by Inventor Chung-Yu Tsai

Chung-Yu Tsai 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: 11203108
    Abstract: A grip device for hexagonal wrenches includes a body, a rotary member, a resilient member and a fastening member. The body includes an engaging portion which includes multiple recesses, multiple first slots and an axle. The rotary member is rotatably and movably mounted to the axle. The rotary member includes a first room defined in the inner periphery of the passage through which the axle extends. A first shoulder is formed between the first room and the passage. The resilient member is mounted to the axle and the fastening member is connected to the axle. An L-shaped tool has the first section thereof received in one of the recesses and the first slot of the recess. When the rotary member is moved toward the engaging portion, the first section is inserted into the first slot. The L-shaped tool is restricted by the rotary member and used as a T-bar tool.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: December 21, 2021
    Inventor: Chung-Yu Tsai
  • Patent number: 11103985
    Abstract: A grip device includes a tubular body, an adjustment member, a left slide and a right slide. The body includes a passage, a guiding slot, a recess and a groove. The adjustment member includes threaded portion. The left slide is slidably located in the groove and includes threads which are engaged with the threaded portion of the adjustment member. When the adjustment member is rotated relative to the pin, the threaded portion of the adjustment member drives the threads of the left slide to move the left slide toward the right slide so as to clamp the hexagonal wrench.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: August 31, 2021
    Inventor: Chung-Yu Tsai
  • Patent number: 11072056
    Abstract: A grip bar for a hexagonal wrench includes a grip, a middle sleeve, an outer sleeve and a rotary member. The grip has an elongate body, a raised portion, multiple first recesses, a head, an elongate slot and a first threaded portion. The middle sleeve includes a first chamber, a first opening, a shoulder and an end hole. The outer sleeve is mounted to the middle sleeve. The rotary member is rotatably inserted in the end hole of the middle sleeve. The first and second threaded portion are connected to each other. The first recesses and the elongate slot respectively accommodate the first section and the second section of a hexagonal wrench. The grip and the rotary member respectively restricted by the shoulder and cannot slip within the middle sleeve so that the hexagonal wrench is firmly combined with the grip and operated efficiently.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: July 27, 2021
    Inventor: Chung-Yu Tsai
  • Publication number: 20210001460
    Abstract: A grip bar for a hexagonal wrench includes a grip, a middle sleeve, an outer sleeve and a rotary member. The grip has an elongate body, a raised portion, multiple first recesses, a head, an elongate slot and a first threaded portion. The middle sleeve includes a first chamber, a first opening, a shoulder and an end hole. The outer sleeve is mounted to the middle sleeve. The rotary member is rotatably inserted in the end hole of the middle sleeve. The first and second threaded portion are connected to each other. The first recesses and the elongate slot respectively accommodate the first section and the second section of a hexagonal wrench. The grip and the rotary member respectively restricted by the shoulder and cannot slip within the middle sleeve so that the hexagonal wrench is firmly combined with the grip and operated efficiently.
    Type: Application
    Filed: July 2, 2019
    Publication date: January 7, 2021
    Inventor: Chung-Yu Tsai
  • Publication number: 20210001459
    Abstract: A grip device includes a tubular body, an adjustment member, a left slide and a right slide. The body includes a passage, a guiding slot, a recess and a groove. The adjustment member includes threaded portion. The left slide is slidably located in the groove and includes threads which are engaged with the threaded portion of the adjustment member. When the adjustment member is rotated relative to the pin, the threaded portion of the adjustment member drives the threads of the left slide to move the left slide toward the right slide so as to clamp the hexagonal wrench.
    Type: Application
    Filed: July 2, 2019
    Publication date: January 7, 2021
    Inventor: Chung-Yu Tsai
  • Publication number: 20200398418
    Abstract: A grip device for hexagonal wrenches includes a body, a rotary member, a resilient member and a fastening member. The body includes an engaging portion which includes multiple recesses, multiple first slots and an axle. The rotary member is rotatably and movably mounted to the axle. The rotary member includes a first room defined in the inner periphery of the passage through which the axle extends. A first shoulder is formed between the first room and the passage. The resilient member is mounted to the axle and the fastening member is connected to the axle. An L-shaped tool has the first section thereof received in one of the recesses and the first slot of the recess. When the rotary member is moved toward the engaging portion, the first section is inserted into the first slot. The L-shaped tool is restricted by the rotary member and used as a T-bar tool.
    Type: Application
    Filed: June 21, 2019
    Publication date: December 24, 2020
    Inventor: Chung-Yu Tsai
  • Patent number: 10766125
    Abstract: A ratchet screwdriver includes a mounting seat, a fixing ring, a control member, a driving shaft, two pawls, two springs, a fixing ring, a control member, a bead, a positioning spring and a bolt. The mounting seat has a front with a first slot, a second slot, a first extension slot, a second extension slot, a passage, a first hole and a second hole. The driving shaft has a ratchet portion. Each pawl is biased by one spring so as to be engaged with the ratchet portion. The control member is rotatably mounted to the mounting seat and the driving shaft to pivot the pawls to engage or disengage with the ratchet portion.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: September 8, 2020
    Inventors: Chiung-Chang Tsai, Chung-Yu Tsai
  • Patent number: 10596692
    Abstract: A tool combination includes a body having a left portion, a right portion, a top portion and a bottom portion. The left portion and the right portion are symmetric to each other relative to a vertical plane. The top portion and the bottom portion are symmetric to each other relative to a horizontal plane. The left, right, top and bottom portions respectively includes an identical left, right, top and bottom recess, and an identical left, right, top and bottom spaces. Each of the left, right, top and bottom recesses includes a tool set received therein.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: March 24, 2020
    Inventor: Chung-Yu Tsai
  • Patent number: 10545013
    Abstract: A measuring tape assembly includes a tape retractably received in a case. The tape has an end hook connected to the first end thereof, and the end hook is located outside of the case. The end hook includes a first face and a second face which is located opposite to the first face. The first face includes multiple grooves which are straight grooves. The first face has first sand portion attached thereon so as to form a first friction face on the first face. The first face faces the case so as to contact an object. The second face has second sand portion attached thereon so as to form a second friction face on the second face. The first and second sand portions provide proper friction so that the end hook does not slip away from the object to be in contact with.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: January 28, 2020
    Inventors: Chiung-Chang Tsai, Chung-Yu Tsai
  • Publication number: 20190329393
    Abstract: A tool combination includes a body having a left portion, a right portion, a top portion and a bottom portion. The left portion and the right portion are symmetric to each other relative to a vertical plane. The top portion and the bottom portion are symmetric to each other relative to a horizontal plane. The left, right, top and bottom portions respectively includes an identical left, right, top and bottom recess, and an identical left, right, top and bottom spaces. Each of the left, right, top and bottom recesses includes a tool set received therein.
    Type: Application
    Filed: April 25, 2018
    Publication date: October 31, 2019
    Inventor: Chung-Yu Tsai
  • Publication number: 20190321963
    Abstract: A tool box assembly includes multiple tool boxes that are stacked together. Each tool box has a body, a cover and multiple connectors. The connectors are used to connect two tool boxes together. The tool box on the upper level includes blocks, insertion plates, engaging portions and hooks so as to be connected with the recessed areas, notches, rooms and slots of the cover of the tool box on the lower level. The connectors each have a ridge and a rail. The rail is slidably engaged with the groove of the cover, and the ridge is connected with the clip portion and block of the cover.
    Type: Application
    Filed: April 19, 2018
    Publication date: October 24, 2019
    Inventor: Chung-Yu Tsai
  • Patent number: 10434638
    Abstract: A tool box assembly includes multiple tool boxes that are stacked together. Each tool box has a body, a cover and multiple connectors. The connectors are used to connect two tool boxes together. The tool box on the upper level includes blocks, insertion plates, engaging portions and hooks so as to be connected with the recessed areas, notches, rooms and slots of the cover of the tool box on the lower level. The connectors each have a ridge and a rail. The rail is slidably engaged with the groove of the cover, and the ridge is connected with the clip portion and block of the cover.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: October 8, 2019
    Inventor: Chung-Yu Tsai
  • Publication number: 20190299389
    Abstract: A hand tool adapter includes a first body and a second body in which the first body is received. The first body includes multiple first recesses and multiple first receiving portions formed on the outer surface thereof. The first receiving portions each protruded from the first body. Each of the first receiving portion has a polygonal first engaging bore or a polygonal second engaging bore defined therein. The second body includes multiple second recesses and multiple second receiving portions formed on the outer surface thereof. The second recesses receive the first receiving portions respectively. The second receiving portions are received in the first recesses respectively.
    Type: Application
    Filed: March 29, 2018
    Publication date: October 3, 2019
    Inventor: Chung-Yu Tsai
  • Patent number: 10384334
    Abstract: A ratchet screwdriver includes a mounting seat, a control member, a driving shaft, two pawls and two springs. The mounting seat has a receiving space, a first slot and a second slot. A passage is defined through the mounting seat. The first and second slots have a hole respectively. The driving shaft has a ratchet portion located in the receiving space. Each pawl is biased by one spring so as to be engaged with the ratchet portion. The control member is rotatably mounted to the mounting seat and the driving shaft. The control member has two control plates to pivot the pawls to disengage from the ratchet portion of the driving shaft.
    Type: Grant
    Filed: September 30, 2017
    Date of Patent: August 20, 2019
    Inventors: Chiung-Chang Tsai, Chung-Yu Tsai
  • Publication number: 20190212120
    Abstract: A measuring tape assembly includes a tape retractably received in a case. The tape has an end hook connected to the first end thereof, and the end hook is located outside of the case. The end hook includes a first face and a second face which is located opposite to the first face. The first face includes multiple grooves which are straight grooves. The first face has first sand portion attached thereon so as to form a first friction face on the first face. The first face faces the case so as to contact an object. The second face has second sand portion attached thereon so as to form a second friction face on the second face. The first and second sand portions provide proper friction so that the end hook does not slip away from the object to be in contact with.
    Type: Application
    Filed: January 10, 2018
    Publication date: July 11, 2019
    Inventors: Chiung-Chang Tsai, Chung-Yu Tsai
  • Publication number: 20190176317
    Abstract: A hand tool assembly includes a grip having a slot communicating with the first end and a lateral side of the grip. A rod is pivotably connected to the grip and includes a function end. The rod is engaged with the slot to be co-axially connected with the grip, or the rod is positioned perpendicularly relative to the grip. An end part is connected to the second end of the grip and includes an engaging portion which protrudes beyond the second end of the grip. A magnet is connected to one end of the rod so as to attract the end part in the grip.
    Type: Application
    Filed: December 10, 2017
    Publication date: June 13, 2019
    Inventor: Chung-Yu Tsai
  • Publication number: 20190134790
    Abstract: A ratchet screwdriver includes a mounting seat, a fixing ring, a control member, a driving shaft, two pawls, two springs, a fixing ring, a control member, a bead, a positioning spring and a bolt. The mounting seat has a front with a first slot, a second slot, a first extension slot, a second extension slot, a passage, a first hole and a second hole. The driving shaft has a ratchet portion. Each pawl is biased by one spring so as to be engaged with the ratchet portion. The control member is rotatably mounted to the mounting seat and the driving shaft to pivot the pawls to engage or disengage with the ratchet portion.
    Type: Application
    Filed: November 6, 2017
    Publication date: May 9, 2019
    Inventors: Chiung-Chang Tsai, Chung-Yu Tsai
  • Publication number: 20190099864
    Abstract: A ratchet screwdriver includes a mounting seat, a control member, a driving shaft, two pawls and two springs. The mounting seat has a receiving space, a first slot and a second slot. A passage is defined through the mounting seat. The first and second slots have a hole respectively. The driving shaft has a ratchet portion located in the receiving space. Each pawl is biased by one spring so as to be engaged with the ratchet portion. The control member is rotatably mounted to the mounting seat and the driving shaft. The control member has two control plates to pivot the pawls to disengage from the ratchet portion of the driving shaft.
    Type: Application
    Filed: September 30, 2017
    Publication date: April 4, 2019
    Inventors: Chiung-Chang Tsai, Chung-Yu Tsai
  • Patent number: 10022847
    Abstract: An apparatus includes a body, a sleeve, a magnetic member and an engaging member. The body includes a function end and a first groove with first and second end faces. The sleeve includes a first room and a reception area defined therein. A second groove is defined in the outside of the sleeve and located corresponding to the first groove. The second groove includes holes defined radially therethrough which communicates with the reception area. The magnetic member is receive in the first room. The engaging member is engaged with the second groove and has first portions inserted through the holes in the second groove. The second engaging portion is connected to the first engaging portions and protrudes beyond the reception area so as to be engaged with the first groove of the body and movable between the first and second end faces of the first groove.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: July 17, 2018
    Inventor: Chung-Yu Tsai
  • Patent number: 9969076
    Abstract: A connection device for a hexagonal wrench and includes a first part and a second part. The first part has an insertion section through which multiple hexagonal first recesses are defined, and an operation portion formed on one end thereof. The operation portion has multiple second hexagonal second recesses. The second part has a reception hole in which the insertion section is inserted and is positioned relative to the second part. The second part has an opening and the first recesses are exposed. The second part has another operation portion on one end thereof. The operation portion has multiple third hexagonal recesses. The first, second and third hexagonal recesses have different sizes and are Metric system and English system.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: May 15, 2018
    Inventor: Chung-Yu Tsai