Patents by Inventor Jerold L. Hlad

Jerold L. Hlad 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: 7383855
    Abstract: A combination pressure relief and vacuum relief valve for mounting on a storage tank is disclosed as having two vertical mounting connections of different elevations; a pressure relief valve mounted on one connection; and a vacuum relief valve mounted on the other connection such that said vacuum relief valve is higher in elevation than said pressure relief valve. The valve is sanitary for use in food and pharmaceutical production and storage and has highly polished surfaces to prevent processed material from sticking. The valve also includes special sloping surfaces in the body and connections to prevent processed material from standing in the valves. The pressure valve and vacuum valve may be removed separately or rotated separately for mounting. The combination valve may be attached on storage tanks or other vessels or conduits.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: June 10, 2008
    Assignee: Cashco, Inc.
    Inventors: Clint M. Rogers, Jerold L. Hlad, Joe D. Dumoit
  • Patent number: 5288052
    Abstract: The self-draining sanitary control valve includes a body having an inlet and an outlet and a fluid control port forming a valve seat between the inlet and the outlet. A bonnet is detachably secured to the body having a stem receiving bore aligned on a common central axis with the control port. Clamping rings are provided for securably clamping the body and bonnet together and for securing the valve body to adjacent fluid lines. The clamping rings are readily detachable for permitting the valve to be cleaned and the interior surfaces of the valve are closed to provide for self-draining of the fluid contained therein. The valve includes a stem slidably mounted in the bore with a valve plug at one end having a predetermined outer surface profile movable toward and away from the port and a flexible diaphragm is secured to a central portion of the plug for engaging the valve seat. An outer portion of the diaphragm is clamped between the body and the bonnet when the clamp ring is locked in place.
    Type: Grant
    Filed: December 8, 1992
    Date of Patent: February 22, 1994
    Assignee: Cashco, Inc.
    Inventors: W. Keith Black, Jerold L. Hlad, Phillip G. Rogers, Wayne A. Rohr, Daniel L. Sharp, Bruce H. Shiffer