Patents by Inventor David T. Yee

David T. Yee 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: 4886289
    Abstract: A foldable two seat face-to-face tandem baby carriage includes a pair of wheeled front legs, a pair of wheeled rear legs, and, two pairs of horizontal longitudinal bars extending between the legs. A U-shaped push handle connects pivotally with the rear of the upper bars, and the free ends of the push handle substantially abut the rear legs about midway along the length. Locking means interengage the push handle with the legs in the extended position and bars in the horizontal position to provide a tandem seating construction with seats and backrests facing each other. Folding is effected when the backrests are parallel and an additional locking slot is provided in a support for anchoring the forward backrest in the parallel position. Release of the lock by foot pressure on a transverse bar extending between the rear legs causes the push handle to move downwardly and forwardly and the two legs to collapse and fold towards each other to be substantially parallel with the push handle in the folded position.
    Type: Grant
    Filed: March 31, 1988
    Date of Patent: December 12, 1989
    Assignee: A B Oriental Trading Company, Inc.
    Inventors: David T. Yee, Eric Lin, Fang-Tung Yee
  • Patent number: 4858947
    Abstract: A foldable tandem seat baby carriage including a pair of wheeled front legs, a pair of wheeled rear legs, and, in the operative position, two pairs of horizontal longitudinal bars extending between the legs. A U-shaped push handle connects pivotally with the rear of the upper bars, and the free ends of the push handle substantially abut the rear legs about midway along their length. Locking means interengage the push handle with the rear legs in the extended position and bars in the horizontal position to provide tandem multiple seat construction. Release of the lock by foot pressure on a transverse bar extending between the rear legs causes the push handle to move downwardly and forwardly and the two legs to collapse and fold towards each other to be substantially parallel with the push bar in the folded position. The two pairs of parallel longitudinal bars collapse to be substantially parallel towards each other in the folded position.
    Type: Grant
    Filed: October 26, 1987
    Date of Patent: August 22, 1989
    Assignee: A B Oriental Trading Co., Inc.
    Inventors: David T. Yee, Eric Lin
  • Patent number: D307249
    Type: Grant
    Filed: December 18, 1987
    Date of Patent: April 17, 1990
    Assignee: A B Oriental Trading Co., Inc.
    Inventors: David T. Yee, Eric Lin