Patents by Inventor Chen-Chen Cheng

Chen-Chen Cheng 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: 10005098
    Abstract: A power operated dispensing tool includes a housing having a material packing receiving space, and a rod disposed within and movable relative to the housing and having a plunger head that is disposed in the material packing receiving space. The rod is operably coupled to a power transmitting mechanism so as to make a forward movement driven by a power of a motor through the power transmitting mechanism to discharge a dispensing material in the material packing receiving space. The rod has an initiating portion disposed to actuate a sensing member in the housing to deactivate the motor when the rod is moved forwardly to a first stop position. The rod can be moved manually to a second stop position to project the plunger head outwardly so as to permit a plunger kit to be attached thereto.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: June 26, 2018
    Assignee: TECHWAY INDUSTRIAL CO., LTD.
    Inventors: Chih-Hua Hsu, Rui-Heng Lin, Chen-Chen Cheng
  • Patent number: 9980736
    Abstract: A medical electric tool has a grip portion and a driving portion. The grip portion has a combining protrusion, two combining channels, and a locking device. The combining channels are defined respectively in two sides of the combining protrusion. The locking device is mounted in the combining protrusion and has two locking blocks and two recoil springs. Each locking block has an engaging segment. The engaging segment is formed on one end of the locking block and extends into one of the combining channels. The driving portion is detachably mounted on the combining protrusion on the grip portion and has a bottom face and two engaging ribs. Each engaging rib has an end provided with an engaging hook selectively engaging with the engaging segment of a corresponding one of the locking blocks.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: May 29, 2018
    Assignee: TECHWAY INDUSTRIAL CO., LTD.
    Inventors: Fu-Hsiang Chung, Chen-Chen Cheng, Jui-Heng Lin
  • Patent number: 9919401
    Abstract: A handheld abrader has a body, a driving device, an eccentric device, and a grinding tray. The body has a handle and a gun body. The driving device is mounted in the gun body and has a driving shaft. The eccentric device is connected to the driving device and has a transmitting sheath, a transmitting shaft, and an eccentric sleeve. The transmitting sheath is connected to the driving shaft and has two positioning recesses and a receiving chamber. The transmitting shaft has at least one engaging face. The eccentric sleeve is movably mounted around the transmitting sheath and has at least one positioning slice abutting against the transmitting sheath in one of the positioning recesses and an engaging ring mounted in the eccentric sleeve, mounted around the transmitting shaft, and having at least one pressing arm selectively pressed against the transmitting shaft at the at least one engaging face.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: March 20, 2018
    Assignee: Techway Industrial Co., Ltd.
    Inventors: Chih Hua Hsu, Jui Heng Lin, Chen Chen Cheng
  • Publication number: 20180008999
    Abstract: A power operated dispensing tool includes a housing having a material packing receiving space, and a rod disposed within and movable relative to the housing and having a plunger head that is disposed in the material packing receiving space. The rod is operably coupled to a power transmitting mechanism so as to make a forward movement driven by a power of a motor through the power transmitting mechanism to discharge a dispensing material in the material packing receiving space. The rod has an initiating portion disposed to actuate a sensing member in the housing to deactivate the motor when the rod is moved forwardly to a first stop position. The rod can be moved manually to a second stop position to project the plunger head outwardly so as to permit a plunger kit to be attached thereto.
    Type: Application
    Filed: July 11, 2016
    Publication date: January 11, 2018
    Inventors: Chih-Hua HSU, Rui-Heng LIN, Chen-Chen CHENG
  • Publication number: 20170252888
    Abstract: A handheld abrader has a body, a driving device, an eccentric device, and a grinding tray. The body has a handle and a gun body. The driving device is mounted in the gun body and has a driving shaft. The eccentric device is connected to the driving device and has a transmitting sheath, a transmitting shaft, and an eccentric sleeve. The transmitting sheath is connected to the driving shaft and has two positioning recesses and a receiving chamber. The transmitting shaft has at least one engaging face. The eccentric sleeve is movably mounted around the transmitting sheath and has at least one positioning slice abutting against the transmitting sheath in one of the positioning recesses and an engaging ring mounted in the eccentric sleeve, mounted around the transmitting shaft, and having at least one pressing arm selectively pressed against the transmitting shaft at the at least one engaging face.
    Type: Application
    Filed: March 2, 2016
    Publication date: September 7, 2017
    Inventors: Chih Hua Hsu, Jui Heng Lin, Chen Chen Cheng
  • Publication number: 20170196545
    Abstract: A medical electric tool has a grip portion and a driving portion. The grip portion has a combining protrusion, two combining channels, and a locking device. The combining channels are defined respectively in two sides of the combining protrusion. The locking device is mounted in the combining protrusion and has two locking blocks and two recoil springs. Each locking block has an engaging segment. The engaging segment is formed on one end of the locking block and extends into one of the combining channels. The driving portion is detachably mounted on the combining protrusion on the grip portion and has a bottom face and two engaging ribs. Each engaging rib has an end provided with an engaging hook selectively engaging with the engaging segment of a corresponding one of the locking blocks.
    Type: Application
    Filed: January 13, 2016
    Publication date: July 13, 2017
    Inventors: Fu-Hsiang CHUNG, Chen-Chen CHENG, Jui-Heng LIN
  • Patent number: 8646657
    Abstract: An electric caulking gun has a body and an actuating assembly. The body has a pushing shaft, a motor, a gearbox, a transmission device, a circuit board and a switch. The gearbox has a sun gear with multiple mounting slots. The actuating assembly is mounted in the body, is connected to the switch and engages the sun gear and has a connecting arm, a linking arm, an actuating element, an oscillating arm and a pressing button. The connecting arm is pivotally connected to the switch. The linking arm is connected to the connecting arm. The actuating element is mounted in the body, selectively engages one of the mounting slots and has a wedge mount and an engaging block. The oscillating arm is connected to the body and is connected to the connecting arm. The pressing button is movably mounted in the body and is connected to the oscillating arm.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: February 11, 2014
    Assignee: Techway Industrial Co., Ltd.
    Inventors: Chih-Hua Hsu, Cheng-Yuan Lin, Chen-Chen Cheng, Rui-Heng Lin
  • Patent number: 8573450
    Abstract: An electrical caulking gun has a gun body and a clutching device. The clutching device has a clutching switch, a linking lever, a clutching block and a block spring. The clutching switch is mounted on the gun body and has a pressed segment and a pushing segment having an inclined pushing surface. The linking lever is pivotally mounted in the gun body and has an abutting end and a pushing end. The abutting end abuts with the pushing surface of the clutching switch. The clutching block has an inclined pushed surface and an engaging rod. The engaging rod detachably engages a transmission device of the caulking gun. The block spring provides a force to push the engaging rod on the clutching block to engage the transmission device.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: November 5, 2013
    Assignee: Techway Industrial Co., Ltd.
    Inventors: Chih-Hua Hsu, Chen-Chen Cheng, Rui-Heng Lin
  • Publication number: 20130270302
    Abstract: An electric caulking gun has a body and an actuating assembly. The body has a pushing shaft, a motor, a gearbox, a transmission device, a circuit board and a switch. The gearbox has a sun gear with multiple mounting slots. The actuating assembly is mounted in the body, is connected to the switch and engages the sun gear and has a connecting arm, a linking arm, an actuating element, an oscillating arm and a pressing button. The connecting arm is pivotally connected to the switch. The linking arm is connected to the connecting arm. The actuating element is mounted in the body, selectively engages one of the mounting slots and has a wedge mount and an engaging block. The oscillating arm is connected to the body and is connected to the connecting arm. The pressing button is movably mounted in the body and is connected to the oscillating arm.
    Type: Application
    Filed: April 17, 2012
    Publication date: October 17, 2013
    Inventors: Chih-Hua HSU, Cheng-Yuan Lin, Chen-Chen Cheng, Rui-Heng Lin
  • Publication number: 20130043281
    Abstract: An electrical caulking gun has a gun body and a clutching device. The clutching device has a clutching switch, a linking lever, a clutching block and a block spring. The clutching switch is mounted on the gun body and has a pressed segment and a pushing segment having an inclined pushing surface. The linking lever is pivotally mounted in the gun body and has an abutting end and a pushing end. The abutting end abuts with the pushing surface of the clutching switch. The clutching block has an inclined pushed surface and an engaging rod. The engaging rod detachably engages a transmission device of the caulking gun. The block spring provides a force to push the engaging rod on the clutching block to engage the transmission device.
    Type: Application
    Filed: August 15, 2011
    Publication date: February 21, 2013
    Applicant: TECHWAY INDUSTRIAL CO., LTD.
    Inventors: Chih-Hua Hsu, Chen-Chen Cheng, Rui-Heng Lin
  • Patent number: 7735398
    Abstract: A rechargeable motor-driven ratchet wrench having power-off protection of the present invention includes a motor, a rechargeable battery and a power-off protection device. When the loaded current of the motor exceeds a set default value of a reference circuit, the power-off protection device disconnects the power supply of the rechargeable battery, so as to stop the motor operation. With the circuit design of the power-off protection device, the ratchet wrench can be ensured to provide usage safety and also usage lifespan of the ratchet wrench can be extended.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: June 15, 2010
    Assignee: Techway Industrial Co., Ltd.
    Inventors: Chih-Hua Hsu, Chen-Chen Cheng
  • Publication number: 20100009608
    Abstract: An electric polishing gun has a body, a rechargeable battery, a drive motor, a transmitting device and an actuating device. The body has a battery seat, a handle section, a circuit board, a switch, a trigger and a holding cap. The rechargeable battery is attached detachably to the battery seat of the body to supply electric power to the electric polishing gun. The drive motor is mounted in the body, is electrically connected to switch, the trigger and the rechargeable battery and has a rotating shaft and multiple engaging teeth. The transmitting device is connected to the drive motor, is mounted in the holding cap and has a bevel gear and a mounting bracket. The actuating device is connected detachably to the transmitting device and has a cover, a drive shaft, an eccentric segment and an actuating segment.
    Type: Application
    Filed: July 8, 2008
    Publication date: January 14, 2010
    Inventors: Ping-Hsiang LO, Chen-Chen Cheng
  • Patent number: 7637392
    Abstract: An electric caulking gun has a body, a gearbox, a caulking barrel, a pushing device, a driving assembly, an actuating assembly, a motor and a power source. The body has a mounting section and a handle section. The gearbox is mounted in the body and has a seat and a mounting sheath. The caulking barrel is connected to the gearbox. The pushing device is connected movably to the gearbox and has a rack, a linking sheet, two pushing shafts and a pushing disc. The driving assembly is mounted in the gearbox. The actuating assembly is mounted between the gearbox and the body. The motor is mounted in the body between the mounting section and the mounting sheath of the gearbox. The power source is connected detachable to the handle section of the body.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: December 29, 2009
    Assignee: Techway Industrial Co., Ltd.
    Inventors: Chih-Hua Hsu, Chen-Chen Cheng, Rui-Heng Lin
  • Patent number: 7604528
    Abstract: An electric grinding gun has a body, a gear reduction device, a holding cap, and an actuating device. The body has a casing, a rechargeable battery, a protective circuit board, a switch, a trigger, a motor, a cooling fin and a mounting barrel. The gear reduction device is rotatably mounted in the mounting barrel and has a seat, two planet gears and a gear ring. The seat is rotatably mounted in the mounting barrel and has a shaft hole, two gear recesses and a connecting axle. The holding cap is securely mounted around the mounting barrel to hold the gear reduction device in the mounting barrel and has an inner thread and a through hole. The actuating device is connected detachably to the seat of the gear reduction device and has a panel and an adhering layer.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: October 20, 2009
    Assignee: Techway Industrial Co., Ltd.
    Inventors: Ping-Hsin Lo, Chen-Chen Cheng
  • Publication number: 20090221222
    Abstract: An electric grinding gun has a body, a gear reduction device, a holding cap, and an actuating device. The body has a casing, a rechargeable battery, a protective circuit board, a switch, a trigger, a motor, a cooling fin and a mounting barrel. The gear reduction device is rotatably mounted in the mounting barrel and has a seat, two planet gears and a gear ring. The seat is rotatably mounted in the mounting barrel and has a shaft hole, two gear recesses and a connecting axle. The holding cap is securely mounted around the mounting barrel to hold the gear reduction device in the mounting barrel and has an inner thread and a through hole. The actuating device is connected detachably to the seat of the gear reduction device and has a panel and an adhering layer.
    Type: Application
    Filed: February 28, 2008
    Publication date: September 3, 2009
    Inventors: Ping-Hsin Lo, Chen-Chen Cheng
  • Publication number: 20090039113
    Abstract: An electric caulking gun has a body, a gearbox, a caulking barrel, a pushing device, a driving assembly, an actuating assembly, a motor and a power source. The body has a mounting section and a handle section. The gearbox is mounted in the body and has a seat and a mounting sheath. The caulking barrel is connected to the gearbox. The pushing device is connected movably to the gearbox and has a rack, a linking sheet, two pushing shafts and a pushing disc. The driving assembly is mounted in the gearbox. The actuating assembly is mounted between the gearbox and the body. The motor is mounted in the body between the mounting section and the mounting sheath of the gearbox. The power source is connected detachable to the handle section of the body.
    Type: Application
    Filed: August 9, 2007
    Publication date: February 12, 2009
    Applicant: TECHWAY INDUSTRIAL CO., LTD
    Inventors: Chih-Hua Hsu, Chen-Chen Cheng, Rui-Heng Lin
  • Publication number: 20080190246
    Abstract: A rechargeable motor-driven ratchet wrench having power-off protection of the present invention includes a motor, a rechargeable battery and a power-off protection device. When the loaded current of the motor exceeds a set default value of a reference circuit, the power-off protection device disconnects the power supply of the rechargeable battery, so as to stop the motor operation. With the circuit design of the power-off protection device, the ratchet wrench can be ensured to provide usage safety and also usage lifespan of the ratchet wrench can be extended.
    Type: Application
    Filed: February 13, 2007
    Publication date: August 14, 2008
    Inventors: Chih-Hua Hsu, Chen-Chen Cheng
  • Patent number: 7121362
    Abstract: An electrical hand tool has a tool assembly, a battery pack and an adjusting device. The tool assembly has a body with an internal mechanism. The battery pack is adjustably connected to the body and is electrically connected to the internal mechanism. The adjusting device has an adjusting base, an adjusting post, a locking knob and a biasing member. The adjusting base is rotatably attached to the body and is attached to the battery pack in a non-rotatable manner. The adjusting post is mounted between the adjusting base and the body and has a positioning collar provided with multiple positioning notches. The locking knob is moveably attached to the adjusting base and has a locking stub held in one of the positioning notches. In such an arrangement, the battery pack that can be adjusted in position to make the hand tool convenient and versatile in use.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: October 17, 2006
    Assignee: Techway Industrial Co., Ltd.
    Inventors: Chih-Hua Hsu, Chen-Chen Cheng
  • Publication number: 20060113100
    Abstract: An electrical hand tool has a tool assembly, a battery pack and an adjusting device. The tool assembly has a body with an internal mechanism. The battery pack is adjustably connected to the body and is electrically connected to the internal mechanism. The adjusting device has an adjusting base, an adjusting post, a locking knob and a biasing member. The adjusting base is rotatably attached to the body and is attached to the battery pack in a non-rotatable manner. The adjusting post is mounted between the adjusting base and the body and has a positioning collar provided with multiple positioning notches. The locking knob is moveably attached to the adjusting base and has a locking stub held in one of the positioning notches. In such an arrangement, the battery pack that can be adjusted in position to make the hand tool convenient and versatile in use.
    Type: Application
    Filed: November 30, 2004
    Publication date: June 1, 2006
    Inventors: Chih-Hua Hsu, Chen-Chen Cheng
  • Patent number: D508387
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: August 16, 2005
    Assignee: Techway Industrial Co., LTD
    Inventors: Chih-Hua Hsu, Yu-Min Su, Chen-Chen Cheng