Patents by Inventor Chin-Tsai Tsai

Chin-Tsai 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: 11396206
    Abstract: A bicycle wheel contains a rim, multiple spokes, and multiple abutting faces. The rim includes multiple through orifices, a hub, and multiple threaded orifices. Two intersected spokes are connected with two adjacent through orifices and two threaded orifices corresponding to the two adjacent through orifices respectively. Each spokes includes a first screwing section and a second screwing section. The second screwing section is screwed with each of multiple nuts and each of multiple second screw bushings. The multiple abutting faces are connected with the multiple spokes respectively. Each spoke includes an axial line defined along a center thereof. An angle is defined between each abutting face of the rim and the axial line of each spoke and is 90 degrees. Two connection sections are formed on two ends of each abutting face.
    Type: Grant
    Filed: January 5, 2020
    Date of Patent: July 26, 2022
    Assignee: SHENG 1 FIRST CO., LTD.
    Inventor: Chin-Tsai Tsai
  • Publication number: 20210206200
    Abstract: A bicycle rim contains a body, multiple fixing bars, and multiple abutting faces. The body includes multiple through orifices, a hub, and multiple threaded orifices. Any two intersected fixing bars are connected with two adjacent through orifices and two threaded orifices corresponding to the two adjacent through orifices respectively. Each fixing bar includes a first screwing section and a second screwing section. The second screwing section is screwed with each of multiple nuts and each of multiple second screw bushings. The multiple abutting faces are connected with the multiple fixing bars respectively. Each fixing bar includes an axial line defined along a center thereof. An angle is defined between each abutting face of the body and the axial line of each fixing bar and is 90 degrees. Two connection sections are defined among each through orifice, two ends of each abutting face, and the inner wall of the body.
    Type: Application
    Filed: January 5, 2020
    Publication date: July 8, 2021
    Inventor: Chin-Tsai TSAI
  • Publication number: 20210086553
    Abstract: Spokes of a wheel contain: a wheel rim, a hub, multiple screwing segments, and multiple screw elements. The respective spoke is made of chrome molybdenum (Cr—Mo), and the respective spoke includes a through hole passing therethrough so as to form a seamless alloy steel pipe. The respective spoke includes a first connection segment and a second connection segment, the first connection segment has a first threaded section, and the second connection segment has a second threaded section so that the first threaded section is screwed with the respective screw element of the hub. The respective screw element of the hub has an orifice, such that the first threaded section is inserted through the orifice to screw with the respective screw element on an inner wall of the hub, and the second threaded section is screwed with the respective screwing segment of the wheel rim.
    Type: Application
    Filed: July 21, 2020
    Publication date: March 25, 2021
    Inventor: Chin-Tsai TSAI
  • Publication number: 20030070504
    Abstract: A lever for a quick release device includes a back plate and two side plates respectively perpendicularly extending from two opposite sides of the back plate. Each side plate has an eccentric lobe extending from one of two ends of the side plate, and a hole is defined through each of the lobes and align with each other. A pivot pin is mounted in the hole. The side plates integrally extend from the back plate and are bent by a punching machine so that the manufacturing process is simplified and the lever is stronger.
    Type: Application
    Filed: October 11, 2001
    Publication date: April 17, 2003
    Inventor: Chin-Tsai Tsai