Patents by Inventor Alfred F. Washburn

Alfred F. Washburn 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: 4402430
    Abstract: A hand-held holder for pressurized chemical cartridges includes a casing having an opening therethrough between first and second ends and a cartridge-carrying frame member dimensioned to slide through the opening. A valve at the first end of the frame member is adapted to engage the cartridge for dispensing the chemical therein, and a lever pivoted at the second end of the casing holds the cartridge in a relatively fixed position while driving the frame through the casing toward the rearward, second end of the casing to cause movement of the valve toward and into engagement with the cartridge to effect the dispensing of the pressurized chemical contained in the cartridge.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: September 6, 1983
    Assignee: Alfred F. Washburn
    Inventors: Mitchell Fox, Alfred F. Washburn
  • Patent number: 4139845
    Abstract: A portable flashlight burglar alarm apparatus has a flashlight with an annunciator attached thereto and powered by the flashlight batteries. The flashlight may be placed adjacent a door and the burglar alarm circuit enabled so that opening the door knocks the flashlight over to actuate the annunciator.
    Type: Grant
    Filed: May 2, 1977
    Date of Patent: February 13, 1979
    Inventor: Alfred F. Washburn