Removable Valve With Supplemental Check Valve Patents (Class 137/285)
  • Publication number: 20100132806
    Abstract: A check valve for a fire hydrant system is configured to allow fluid to flow in a direction from a pressurized water supply to a fire hydrant and to restrict fluid from flowing from the fire hydrant to the pressurized water supply. The check valve includes an internal cavity and a flapper capable of moving between an open position wherein the flapper is positioned against a side of the internal cavity so as to substantially not impede flow of fluid therethrough and a closed position wherein the flapper creates a seal to restrict flow of fluid therethrough.
    Type: Application
    Filed: December 1, 2008
    Publication date: June 3, 2010
    Inventor: Daniel E. BURCZYNSKI
  • Publication number: 20080047615
    Abstract: A yard hydrant with a head casting having an inlet and an outlet with a conduit extending from the inlet to the outlet where a check valve is mounted within the conduit.
    Type: Application
    Filed: August 22, 2006
    Publication date: February 28, 2008
    Applicant: WCM INDUSTRIES, INC.
    Inventor: William T. BALL
  • Patent number: 7249609
    Abstract: A yard hydrant having a valve body with a valve seat and a drain port. A closure valve disposed within the valve body and engaging the valve seat. The valve body having a conduit in fluid communication with the drain port and a hollow interior of the valve body. A check valve disposed within the conduit to prevent fluid flow from the drain port through the conduit to the hollow interior.
    Type: Grant
    Filed: August 24, 2005
    Date of Patent: July 31, 2007
    Assignee: WCM Industries, Inc.
    Inventor: William T. Ball
  • Patent number: 5404734
    Abstract: A lock comprised of a cylindrical body having a first passage extending axially through the body which passage is configured to enable a locking bar to be passed through the body, the bar having at least one orifice intermediate its extremities, the lock body having a second partial passageway extending from the side wall of the body at least into the first passageway and normal to the latter so that the orifice in the bar can be disposed in register with the second passageway. A cylindrical lock configured to fit slidably in the second passageway so that at least a portion of the lock may be thrust in the second passageway and through the bar orifice when the latter is disposed in register with the second passageway, when the lock may be secured by a key to be withdrawn from the outer end of the lock. This lock and bar may employed with external plates to secure adjacent members from movement relative to each other.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: April 11, 1995
    Inventor: Louis Martinez
  • Patent number: 4127142
    Abstract: A wet barrel hydrant check valve has a body containing a dash-pot assembly connected to a flapper valve, spring biased towards the closed condition. A sandwich flange fixed to the hydrant has a member holding the flapper out of the flow passageway, the flange being joined in a break-away connection to the valve body so that upon hydrant upset, as by vehicle impact, the hydrant and holding member are dismounted from the valve body, releasing the flapper into the flow path of escaping water for dash-pot controlled, gradual closure of the valve minimizing water hammer in the line.
    Type: Grant
    Filed: May 11, 1977
    Date of Patent: November 28, 1978
    Assignee: James Allen Snider
    Inventor: James A. Snider
  • Patent number: 4120314
    Abstract: A hydraulic actuator for use in operating a remotely located flush valve includes a housing having fluid inlet and outlet ports, each of which are connected to the flush valve through tubes or the like with the inlet port being under fluid pressure derived from the flush valve. There are passage means connecting the ports with first and second seal members being positioned in the passage means. A stem is movable in the housing with the first and second seal members being positioned on and movable with the stem. A spring positioned within the housing urges the stem toward a position in which the second seal member closes communication between the inlet and outlet ports. The first seal member is located closer to the inlet port than the second seal member and is removable from the stem. There is a seat for the first seal member with fluid pressure at the inlet urging the first seal member, after removal from the stem, toward the seat to close communication between the inlet and outlet.
    Type: Grant
    Filed: February 11, 1977
    Date of Patent: October 17, 1978
    Assignee: Sloan Valve Company
    Inventor: Frederic Lissau