Patents by Inventor Douglas E. Laseter

Douglas E. Laseter 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: 4376601
    Abstract: A device for conveying measured amounts of material which includes a rotating induction wheel having a plurality of elongate open-ended chambers defined therein and a pair of wipers arranged to remove excess material from the chamber ends. Brackets seal the chambers, and gas is introduced into the chambers to pulse the material out of the chambers into a material transport conduit. Metered charges of material are thus delivered to the transport conduit. The wipers are integral with the brackets.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: March 15, 1983
    Inventor: Douglas E. Laseter
  • Patent number: 4234272
    Abstract: A device for conveying measured amounts of material which includes a rotating induction wheel having a plurality of elongate open-ended chambers defined therein and a pair of wipers arranged to remove excess material from the chamber ends. Pressure pads seal the chambers, and gas is introduced into the chambers to pulse the material out of the chambers into a material transport conduit. Metered charges of material are thus delivered to the transport conduit. An alternative embodiment of the metering device has a pair of sequential chambers pressurized simultaneously.
    Type: Grant
    Filed: October 6, 1978
    Date of Patent: November 18, 1980
    Inventor: Douglas E. Laseter
  • Patent number: 4179232
    Abstract: A device for conveying measured amounts of material which includes a rotating induction wheel having a plurality of elongate open-ended chambers defined therein and a pair of wipers arranged to remove excess material from the chamber ends. Pressure pads seal the chambers, and gas is introduced into the chambers to pulse the material out of the chambers into a material transport conduit. Metered charges of material are thus delivered to the transport conduit.
    Type: Grant
    Filed: April 18, 1978
    Date of Patent: December 18, 1979
    Inventor: Douglas E. Laseter