Patents by Inventor Kuei-Tang Shih

Kuei-Tang Shih 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: 7025179
    Abstract: An emergency safeguard system for elevator includes an emergency push-button disposed in the elevator car applied to cooperate with an auxiliary control panel and an auxiliary door opening system, furthermore, on the elevator car and in the elevator shaft are provided with photoinduced system and positioning and direction judging system, such that the stranded users are able to extricate themselves from the elevator car under an automatic and safety program.
    Type: Grant
    Filed: August 12, 2003
    Date of Patent: April 11, 2006
    Inventor: Kuei-Tang Shih
  • Publication number: 20050034930
    Abstract: An emergency safeguard system for elevator includes an emergency push-button disposed in the elevator car applied to cooperate with an auxiliary control panel and an auxiliary door opening system, furthermore, on the elevator car and in the elevator shaft are provided with photoinduced system and positioning and direction judging system, such that the stranded users are able to extricate themselves from the elevator car under an automatic and safety program.
    Type: Application
    Filed: August 12, 2003
    Publication date: February 17, 2005
    Inventor: Kuei-Tang Shih
  • Patent number: 6352136
    Abstract: An auxiliary safety lift device for an elevator includes a main elevator power system, a spare electric power system, a secondary motor, a secondary speed reducer, and an electromagnetic clutch. The electromagnetic clutch includes an electromagnetic disk, a transmission disk for rotating the main shaft of the main motor of the main elevator power system, a drive disk rotated by the secondary speed reducer, and a spring sheet secured on the drive disk. When the electromagnetic disk is energized by the spare electric system, the spring sheet is attracted by the electromagnetic disk to engage the transmission disk so that the transmission disk is rotated with the drive disk to rotate the main shaft of the main motor.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: March 5, 2002
    Inventor: Kuei-Tang Shih
  • Patent number: 6302240
    Abstract: An auxiliary safety lift device for a cab of an elevator includes a box having a first side defining a through hole and a second side defining a chamber, a slide groove defined in a front side of the chamber, an inspection board made of transparent material secured in the second side of the box and aligning with the through hole of the box so that a user can view and inspect an ambient environment from the inspection board through the through hole of the box, a control panel secured in the chamber of the box and defining a plurality of receiving spaces, a plurality of control buttons each secured in a respective one of the receiving spaces of the control panel, a safety board slidably secured in the slide groove of the chamber of the box, an outer cover plate pivotally mounted on the box for encompassing the box, and two sensors, wherein a first one of the two sensors is mounted between the box and the outer cover plate, and a second one of the two sensors is mounted on one side of the safety board.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: October 16, 2001
    Inventor: Kuei-Tang Shih