Patents by Inventor Delvin Mellerup

Delvin Mellerup 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).

  • Backflow prevention device
    Patent number: 11746509
    Abstract: A backflow prevention device includes a piston received in a device passage between an inlet port and outlet port. A relief port can fluidly communicate with a middle segment of the device passage. The piston is movable between a normal flow position in which the piston blocks fluid communication between the relief port and the middle segment of the device passage and a backflow position in which the piston allows fluid communication between the relief port and the middle segment of the device passage. The piston can move to the normal position in response to normal flow through the device passage from the inlet port toward the outlet port and configured to move to the backflow position in response to greater pressure in the middle segment than in the inlet port.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: September 5, 2023
    Inventors: Kenny Bassett, Delvin Mellerup
  • BACKFLOW PREVENTION DEVICE
    Publication number: 20230065329
    Abstract: A backflow prevention device includes a piston received in a device passage between an inlet port and outlet port. A relief port can fluidly communicate with a middle segment of the device passage. The piston is movable between a normal flow position in which the piston blocks fluid communication between the relief port and the middle segment of the device passage and a backflow position in which the piston allows fluid communication between the relief port and the middle segment of the device passage. The piston can move to the normal position in response to normal flow through the device passage from the inlet port toward the outlet port and configured to move to the backflow position in response to greater pressure in the middle segment than in the inlet port.
    Type: Application
    Filed: September 1, 2021
    Publication date: March 2, 2023
    Inventors: Kenny Bassett, Delvin Mellerup