Patents by Inventor Gunter R. Jaekel

Gunter R. Jaekel 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).

  • Adjustable check valve
    Patent number: 4112959
    Abstract: A smoothly acting adjustable fluid flow check valve comprises an adjustably spring biased ball valve member, a piston upstream of the ball valve member and having a stem acting as an actuator for the ball valve member and as a further valving member actually controlling the volume of fluid passing through the check valve, the piston moving in a cylinder surrounding the stem so as to damp the movement of the latter.
    Type: Grant
    Filed: April 22, 1977
    Date of Patent: September 12, 1978
    Inventor: Gunter R. Jaekel