Patents by Inventor Mei H. Man

Mei H. Man 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: 5316183
    Abstract: A water-shooting toy configured as a bow and arrow comprises a self-contained water pump sub-assembly and a case assembly. The pump sub-assembly includes a cylinder defining a pump chamber, a piston having a rod extending out from a body and a handle that is grasped by a user for manual operation of the pump. A nozzle is joined to the other end of the cylinder and has an opening that forms a stream of water upon operation of the pump. A one-way valve in the discharge passage permits water to flow through the discharge passage only from the pump chamber to the nozzle and prevents induction of air into the pump chamber through the nozzle inlet passage. A water passage into the pump chamber has a one-way inlet valve that admits water to the pump chamber upon the intake stroke of the pump and prevents discharge of water through the inlet passage upon the delivery stroke.
    Type: Grant
    Filed: October 27, 1992
    Date of Patent: May 31, 1994
    Assignee: Lanard Toys Limited
    Inventors: Virginio A. Brovelli, Mei H. Man