Patents by Inventor John Steven Marquez, JR.

John Steven Marquez, JR. 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).

  • VALVE STOP AND SUCTION COVER PLATFORMED ASSEMBLY
    Publication number: 20220163033
    Abstract: A fluid end of a reciprocating pump assembly includes a cylinder, a cover, and a valve stop. The cylinder has a fluid inlet, a fluid outlet, and an access side wall comprising an access wall inner surface that defines an access opening. The access opening provides access to an inner area of the cylinder and has an access opening axis. The cover is positioned in the access opening and forms a seal with the access wall inner surface along the access opening. The cover includes a cover axis coaxial with the access opening axis. The valve stop is positioned partially in the fluid inlet and includes a spring retainer and a column portion. The column portion includes a flange positioned between the cover and the access wall inner surface. The flange is in the shape of an arc.
    Type: Application
    Filed: July 21, 2020
    Publication date: May 26, 2022
    Applicant: SPM Oil & Gas Inc.
    Inventors: Jeff Myers, John Steven Marquez, JR., Adalberto Cortes, Johnny E. DeLeon,, II