Patents by Inventor HUI-CHENG CHENG

HUI-CHENG 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).

  • Publication number: 20240017388
    Abstract: The invention provides a pneumatic nail gun, comprising a gun body, a nail box, a fork and a nail forming device. The gun body comprises a sliding groove, a nail outlet adjacent to the sliding groove and a push block. The nail box and the fork are fixed on the gun body. The nail box is configured to place a plurality of strip nails to be sequentially exposed from the nail outlet. The formed fork comprises two forming surfaces with unequal heights, and the two forming surfaces are adjacent to the nail outlet. The nail forming device comprises two jaw arms, two control arms and a push seat, and the push block drives the two control arms to drive the two jaw arms to rotate and close the two forming jaws, and to drive the push seat to slide on the sliding groove.
    Type: Application
    Filed: July 14, 2022
    Publication date: January 18, 2024
    Inventor: Hui-Cheng CHENG
  • Patent number: 11872679
    Abstract: The invention provides a pneumatic nail gun, comprising a gun body, a nail box, a fork and a nail forming device. The gun body comprises a sliding groove, a nail outlet adjacent to the sliding groove and a push block. The nail box and the fork are fixed on the gun body. The nail box is configured to place a plurality of strip nails to be sequentially exposed from the nail outlet. The formed fork comprises two forming surfaces with unequal heights, and the two forming surfaces are adjacent to the nail outlet. The nail forming device comprises two jaw arms, two control arms and a push seat, and the push block drives the two control arms to drive the two jaw arms to rotate and close the two forming jaws, and to drive the push seat to slide on the sliding groove.
    Type: Grant
    Filed: July 14, 2022
    Date of Patent: January 16, 2024
    Assignee: ANN-CHAIN ENTERPRISE CO., LTD.
    Inventor: Hui-Cheng Cheng
  • Patent number: 10953530
    Abstract: A repeating nail-feeding structure for pneumatic nailing machine, installed in a pneumatic nailing machine, includes an air stream guiding tube, automatic return cylinder, and shifting element. The tube enables working air stream from the machine to enter the cylinder, thereby a piston stein of the cylinder is driven to a retracted position. The piston stein is returned to an extended position by the pressing of a return spring within the cylinder. The shifting element is fixed to the piston stein and provided with a shifting lever. The shifting lever is moved along with the piston stein to advance the strip nail of the machine. Thereby, when the nail is ejected, the strip nail is advanced simultaneously by the discharged working air stream. The requirement of extensive use is fulfilled due to no limitation to length of the strip nail and successive nail-feeding capability.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: March 23, 2021
    Assignee: Ann-Chain Enterprise Co., Ltd.
    Inventor: Hui-Cheng Cheng
  • Publication number: 20190240822
    Abstract: A repeating nail-feeding structure for pneumatic nailing machine, installed in a pneumatic nailing machine, includes an air stream guiding tube, automatic return cylinder, and shifting element. The tube enables working air stream from the machine to enter the cylinder, thereby a piston stein of the cylinder is driven to a retracted position. The piston stein is returned to an extended position by the pressing of a return spring within the cylinder. The shifting element is fixed to the piston stein and provided with a shifting lever. The shifting lever is moved along with the piston stein to advance the strip nail of the machine. Thereby, when the nail is ejected, the strip nail is advanced simultaneously by the discharged working air stream. The requirement of extensive use is fulfilled due to no limitation to length of the strip nail and successive nail-feeding capability.
    Type: Application
    Filed: February 5, 2018
    Publication date: August 8, 2019
    Inventor: HUI-CHENG CHENG
  • Patent number: 10239196
    Abstract: An air supply structure of a pneumatic tool includes a housing and a ventilation module. The housing includes an operating portion including an air chamber, a connecting portion including an accommodating space, and a holding portion including an air entering channel and an air exiting channel. The accommodating space is in communication with the air chamber, the air entering channel and the air exiting channel. The ventilation module, disposed in the connecting portion, includes an air inlet in communication with the air entering channel, an air outlet in communication with the air exiting channel, a first air opening in communication with the air chamber, a second air opening in communication with the air chamber, and a ventilation space. Thus, the size of the ventilation space of the ventilation module of individual pneumatic tools is ensured to be uniform to increase the manufacturing yield rate.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: March 26, 2019
    Assignee: ANN-CHAIN ENTERPRISE CO., LTD.
    Inventor: Hui-Cheng Cheng
  • Publication number: 20170136613
    Abstract: An air supply structure of a pneumatic tool includes a housing and a ventilation module. The housing includes an operating portion including an air chamber, a connecting portion including an accommodating space, and a holding portion including an air entering channel and an air exiting channel. The accommodating space is in communication with the air chamber, the air entering channel and the air exiting channel. The ventilation module, disposed in the connecting portion, includes an air inlet in communication with the air entering channel, an air outlet in communication with the air exiting channel, a first air opening in communication with the air chamber, a second air opening in communication with the air chamber, and a ventilation space. Thus, the size of the ventilation space of the ventilation module of individual pneumatic tools is ensured to be uniform to increase the manufacturing yield rate.
    Type: Application
    Filed: November 16, 2015
    Publication date: May 18, 2017
    Inventor: HUI-CHENG CHENG