Patents by Inventor John E. Schwartz

John E. Schwartz 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: 5465753
    Abstract: A safety vessel and valve assembly for storage and transport of chemicals is disclosed. The assembly includes a vessel housing a series of retracted valves. A thickened mounting plate provides an area to mount and protect the valves within the vessel, while attaching to the vessel in such a manner to maintain the smooth exterior surface of the vessel. An impact softener and heat resistant shroud covers the vessel exterior protecting the vessel, its valves and chemical cargo during a collision or other external forces.
    Type: Grant
    Filed: June 21, 1994
    Date of Patent: November 14, 1995
    Inventor: John E. Schwartz
  • Patent number: 5303843
    Abstract: A fluid transport apparatus including an elongated fluid vessel for transporting fluid, such as LPG. One or more breakable containers of compressible fluid are positioned within the fluid vessel. The containers are adapted to break by the force of the vessel fluid surging against them when the fluid vessel is impacted. The compressible fluid within the containers dissipates or eliminates the water hammer pressure resulting from the impact and thereby prevents the walls of the fluid vessel from failing. The breakable containers can be end partitions with one or more rupture discs thereon or collapsible pressurized containers, such as ordinary tennis balls, held at one or both vessel ends by internal breakaway partition walls.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: April 19, 1994
    Assignee: Montana Sulphur & Chemical Co.
    Inventors: Donald L. Zink, Donald G. Zink, John E. Schwartz
  • Patent number: 5280874
    Abstract: An internal valve for pressurized fluid containment vessels having vessel ports. The valve includes a valve seat associated with the vessel port and a valve member movable between a closed position against the valve seat and an open position wherein fluid can flow through the vessel port. A control chamber positioned in the vessel is connected to the valve member. A motive mechanism acting on or in the control chamber, by a control system outside of the vessel, controllably moves the valve member to at least one of the open or closed positions. The control chamber is sealed from fluid in the vessel by a sealing system, which includes a flexing surface against which fluid pressure in the vessel acts to thereby bias the valve member towards one of the open or closed positions.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: January 25, 1994
    Assignee: Montana Sulphur & Chemical Co.
    Inventors: Donald L. Zink, Donald G. Zink, John E. Schwartz
  • Patent number: 5222517
    Abstract: A fluid transport apparatus including a fluid transport tank having a tank shell defining a fluid compartment within it. A well connected to the shell at an opening through the shell is recessed into the perimeter of the compartment. The well and its contents are thereby protectively positioned within the envelope of the shell. Equipment operatively associated with the compartment can be mounted in the well. When the equipment includes a pressure relief valve, the well cover plate can have a vent which can have a rupture disc mounted therein and adapted to open when the valve lifts. A pressure relief valve mounted in the well can be controlled by a valve positioned within the fluid compartment and operatively connected in series with the relief valve. When the equipment is a fluid valve or a relief valve it can be controlled by control equipment mounted in another recessed well, safely spaced from the recessed well of the valve.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: June 29, 1993
    Assignee: Montana Sulphur & Chemical Co.
    Inventors: Donald L. Zink, Donald G. Zink, John E. Schwartz
  • Patent number: 5113893
    Abstract: The invention is a normally open safety shut-off valve, totally within a vessel of pressurized product, which vessel requires a safety pressure relief valve. This normally open safety shut-off valve is placed between the safety pressure relief valve and the product in the vessel and can be closed by a person of average intelligence without special tools in the event that an uncontrollable leak develops in the said relief valve, later to spontaneously reopen if the pressure of the product in the vessel rises to a dangerous high level. This is of particular value in the containment of hazardous gases or liquids under pressure in a transportation vessel, without diminishing existing safety pressure relief valve principals.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: May 19, 1992
    Inventor: John E. Schwartz
  • Patent number: 4872640
    Abstract: The invention is a normally-closed valve apparatus for mounting within a vessel containing a product, such as a fluid, gas, or liquid. The valve apparatus comprises an actuator assembly. It also comprises a valve body assembly having a product passage with continuous walls free of openings. A valve assembly having a valve seat is also provided. The actuator assembly includes at least one draw bar straddling the valve body assembly and a sealing member. The sealing member is movable by the draw bar away from its normal engagement with the valve seat to open the valve and allow passage of the product through the valve apparatus.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: October 10, 1989
    Inventor: John E. Schwartz