Patents by Inventor Walter E. Petersen

Walter E. Petersen 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).

  • Portable sprayer with safety cover
    Patent number: 4509664
    Abstract: This invention pertains to a sprayer for insecticides. The sprayer consists of a tank and a cover assembly which includes an air pump for pressurizing the tank. The tank has a funnel-shaped neck which is engaged by the cover to form an air-tight enclosure. In order to insure that the cover does not separate suddenly when it is opened while the tank is still pressurized, the neck is provided with extrusions which do not permit the closure to separate from the tank as air is bleeding out of the tank.
    Type: Grant
    Filed: March 23, 1983
    Date of Patent: April 9, 1985
    Assignee: H. D. Hudson Manufacturing Company
    Inventor: Walter E. Petersen