Patents by Inventor Shih Fan Tsai

Shih Fan 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: 6776267
    Abstract: A brake device for cycle includes two brake arms pivotally secured together, and each having a brake shoe attached to one end for braking purposes, a brake cable coupled to the other ends of the brake arms for forcing the brake shoes to brake the cycle, and a spring member having one end attached to the cycle. One of the brake arms includes an extension having a depression for receiving the other end of the spring member. A cushioning member may be received in the extension and engaged with the spring member for cushioning the other end of the spring member.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: August 17, 2004
    Inventor: Shih Fan Tsai
  • Publication number: 20040060778
    Abstract: A brake device for cycle includes two brake arms pivotally secured together, and each having a brake shoe attached to one end for braking purposes, a brake cable coupled to the other ends of the brake arms for forcing the brake shoes to brake the cycle, and a spring member having one end attached to the cycle. One of the brake arms includes an extension having a depression for receiving the other end of the spring member. A cushioning member may be received in the extension and engaged with the spring member for cushioning the other end of the spring member.
    Type: Application
    Filed: September 27, 2002
    Publication date: April 1, 2004
    Inventor: Shih Fan Tsai
  • Patent number: 6105733
    Abstract: A brake mechanism includes a pair of brake arms each having a middle portion pivotally secured to a cycle at a shaft and each having a brake shoe secured to the lower portion. The lower portion of the brake arm includes a protrusion having a head. A ring is rotatably secured to the shaft and has a spring rod engaged with the protrusion of the brake arm for biasing the brake shoe away from the wheel rim of the cycle. A screw is engaged with the ring for rotating the ring relative to the tube and to adjust the biasing force of the spring rod against the brake shoe.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: August 22, 2000
    Inventor: Shih Fan Tsai
  • Patent number: 5980800
    Abstract: A method uses a mold for making a bracket of a brake lever device. The mold includes a mold cavity and a stem and a block extended inward of the mold cavity for forming the aperture and the orifice of a band of the bracket. A material is then injected into the mold cavity for forming a prototype of the bracket. The prototype is tapped for forming an inner thread in the aperture of the band, and is cut for forming the slot and the ear and for forming a C-shaped structure for the band. The ear has an oblong recess for engaging with a head of a fastener.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: November 9, 1999
    Inventor: Shih Fan Tsai
  • Patent number: 5778729
    Abstract: A brake lever includes a bracket having a shaft disposed in the middle portion. A brake handle has a grip and an arm joined at their proximal ends. The arm includes a lower portion engaged with the shaft and includes a groove and two orifices for engaging with a barrel of a brake cable. One of the orifices is located between the other orifice and the shaft, and moves for a shorter distance than the other orifice when the arm is rotated about the shaft, such that the leverage of the brake lever can be adjusted.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: July 14, 1998
    Assignee: Tektro Technology Corporation
    Inventor: Shih Fan Tsai
  • Patent number: 5740889
    Abstract: A brake mechanism for a bicycle includes a rod extended from a fork tube and having a panel. A disc is engaged on the rod and includes a projection for engaging with the panel and includes a flap folded relative to the disc for engaging with a screw. A ring is rotatably engaged on the rod and has a notch surface for engaging with the screw. A brake arm is rotatably secured to the rod and has a protrusion. A spring rod is secured to the ring and engaged with the brake arm. The screw may rotate the ring in order to adjust the spring force of the spring rod to the brake arm.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: April 21, 1998
    Inventor: Shih Fan Tsai
  • Patent number: 5704453
    Abstract: A brake device for a bicycle includes a brake arm and a stud pivotally coupled to the brake arm. The stud includes a ring and a head formed in one end. A casing has an opening and a notch formed in each of the two ends. The ring is rotatably engaged in one of the opening for allowing the casing to be rotatably coupled to the stud. An elbow has an extension for rotatably engaging in the other opening and for allowing the elbow to be rotatable about the extension such that the brake device may be attached to different place of the bicycle.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: January 6, 1998
    Assignee: Tektro Technology Corporation
    Inventor: Shih Fan Tsai
  • Patent number: 5669268
    Abstract: A brake lever mechanism including a bracket having a shaft disposed in the middle portion. A brake handle has a grip and an arm joined at their proximal ends. The arm includes a lower portion engaged with the shaft and includes a groove and two recesses. One of the recesses is located closer to the shaft than the other recess such that the recess may move for a farther distance than the other recess relative to the shaft when the arm is rotated about the shaft, and such that the leverage of the brake lever can be adjusted.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: September 23, 1997
    Assignee: Tektro Technology Corporation
    Inventor: Shih Fan Tsai