Patents by Inventor May-Chu Lan

May-Chu Lan 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: 6848697
    Abstract: A foldable and positioning device of a scooter controlled by a leg of a driver comprises: a support frame having two positioning plates; a connecting seat positioned at a front end of the scooter body; two pedals; and a spring installed between one post and a rotary shaft. An upper side of the connecting seat has two lateral walls; and each wall has a hole. Each post is capable of engaging a groove of one positioning palate to one respective hole. When a user treads one ear of a pedal, the support frame is folded. When another one of the grooves is aligned with the hole, the post will automatically move into the hole and the groove. Thereby, the support frame is folded and positioned above the scooter body.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: February 1, 2005
    Inventor: May-Chu Lan
  • Publication number: 20040026144
    Abstract: An electric driving scooter installed with a motor for driving one rear wheel is disclosed. One side of the car body has a seat fixed. One outer lower edge of the seat is pivotally installed with a driven wheel and the seat is installed with a battery set. Power of the battery set is transferred to a controller and the motor through electric wires. A bottom of the car body has an auxiliary battery set the power of which is transferred to the controller and the auxiliary battery set is connected to the battery set in parallel. Thereby, the user can select one of the battery sets by a controller.
    Type: Application
    Filed: August 7, 2002
    Publication date: February 12, 2004
    Inventor: May-Chu Lan
  • Publication number: 20030214108
    Abstract: A leg controlled folding and positioning structure of a scooter comprises: a support frame having two positioning plates; a connecting seat positioned at a front end of the scooter body; two pedals; and two rigid springs installed between the resisting posts and the rotary shaft. An upper side of the connecting seat has two lateral walls; and each wall has a buckling hole. Each resisting post is capable of being engaged with the buckling hole. When a user treads one ear to drive the pedal; then the support frame is folded. When the another one of the resisting grooves is aligned to the buckling hole, the resisting post will automatically move into the buckling hole and the resisting groove. Thereby, the support frame is folded and positioned above the scooter body. As the operation process is reversed, than the support frame stands upright and thus the scooter can be driven.
    Type: Application
    Filed: May 20, 2002
    Publication date: November 20, 2003
    Inventor: May-Chu Lan