Patents by Inventor Winston Lai

Winston Lai 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: 5139262
    Abstract: An apparatus for practicing a golf stroke includes a sloping board laid on a floor for practing a putting stroke on the slopping board, of which a sloping surface formed on the board can be optionally adjusted to simulate a real sloping surface found in an actual golf course, thereby enhancing a player's putting skill.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: August 18, 1992
    Inventor: Winston Lai
  • Patent number: 4779796
    Abstract: A swing stand for golf traning use includes: a first wedge leaf, a second wedge leaf and an intermediate wedge leaf pivotally secured with one another by a central hinge to form a collapsible board having the first and second leaves extended to form an upper sloping surface of which a slope of such an upper sloping surface can be adjusted by shifting the intermediate wedge leaf either rightwardly under the first leaf or leftwardly under the second leaf to variate the slope of the stand to simulate a rugged surface as found in a real golf course so as to enhance a golf playing skill and interest.
    Type: Grant
    Filed: December 1, 1987
    Date of Patent: October 25, 1988
    Inventor: Winston Lai
  • Patent number: 4681341
    Abstract: A collapsible golf cart includes: a supporting frame adapted for fastening a golf bag thereon and formed as a generally U-shaped frame, a pair of radial-movement legs pivotally mounted on two inclined-surface portions on the U-shaped frame, a wheel shaft having a pair of telescopic shafts respectively reciprocated on both sides of a sleeve to rotatably mount a pair of wheels, a pair of actuating links having their lower ends pivotally connected with the pair of legs and the pair of telescopic shafts, and a collapsible handle respectively pivotally connected with the supporting frame and the pair of actuating links, so that upon the raising of the handle, the pair of actuating links may simultaneously pull the two legs rearwardly and pull the two wheels transversely outwardly to quickly extend the folded cart with only a one-step operation.
    Type: Grant
    Filed: July 14, 1986
    Date of Patent: July 21, 1987
    Inventor: Winston Lai
  • Patent number: 4130317
    Abstract: Disclosed herein is a structure for the holding of sun-reducing glass in an automobile. One feature is that the rotation of sun-reducing glass is so light and convenient that the sun-cut glass can be turned to any desired position. The clamping device can hold the sun-reducing glass firmly so that it is immovable during the continuous vibration of the vehicle and it won't disturb the view of a driver.The clamping device is designed with two different retention points. Firstly, there is a lever action in the angular movement of the sun-cut glass. Applied force opens the spring clip so that the arms of the clip will not clamp the fixing shaft and a small force can be applied to the sun-reducing glass to move it to the required angle and position. Secondly, when there is no force to be applied on the sun-cut glass, the arm of the spring clip holds the fixing shaft firmly and thus, the sun-reducing glass is clamped firmly so that it is immovable.
    Type: Grant
    Filed: July 27, 1977
    Date of Patent: December 19, 1978
    Inventor: Winston Lai