Check valve

Claim 2

A fluid flow check valve comprising: a housing having an inlet end and a discharge end and a chamber therebetween; a valve seat in said housing adjacent said inlet end; a valve member engageable with said valve seat; and means to direct the movement of said valve member into and out of engagement with said valve seat consisting of an elongated guide means on said valve member, a first support for said guide means carried by said housing in a portion between said valve member and said discharge end of said housing, said first support including a collar formed with a body having a flared end and an oppositely directed neck opening slidably engaged about said guide means, and a conical spring element having a large end seated in said flared end of said collar and the small end engaged on said valve member, said spring element acting to close said valve member upon said valve seat, and a second support for and engaged by said guide means carried by said housing adjacent said inlet end of said housing, said first and second supports permitting said valve member and guide means to move laterally for seating of said valve member on said valve seat.

Claim 3

The check valve of claim 1 wherein said second support includes a thin flat body member having a central aperture and arms projecting radially from said member into engagement with said housing, said arms being creased along the lengths thereof for stiffening the same, and said valve seat is an annular member disposed upon said second support.

Claim 4

A fluid flow check valve comprising: a housing having an inlet end and a discharge end and a chamber therebetween; a valve seat in said housing adjacent said inlet end; a valve member engagable with said valve seat; and means to direct the movement of said valve member into and out of engagement with said valve seat consisting of an elongated guide means on said valve member, a first support for said guide means carried by said housing in a portion between said valve member and said discharge end of said housing, said first support including an elongated element formed with a pair of legs integrally connected at one end and extending along side each other to the opposite ends which are spaced apart, said first support having an opening intermediate its length for passage of said guide means to direct movement of said valve member, recessed projections in said housing providing pockets for the reception of said ends of said first support, one of said pockets being formed with a slotted opening for the passage of said spaced apart ends of said first support, and a second support for said guide means carried by said housing adjacent said inlet end of said housing, said first and second supports permitting said valve member and guide means to move laterally for seating of said valve member on said valve seat.

Claim 5

A fluid flow check valve comprising: a housing having an inlet end and a discharge end and a chamber therebetween; a valve seat in said housing adjacent said inlet end; a valve member engagable with said valve seat; and means to direct the movement of said valve member into and out of engagement with said valve seat consisting of an elongated guide means on said valve member, a first support for said guide means carried by said housing in a portion between said valve member and said discharge end of said housing, said first support including an elongated element formed with a pair of legs integrally connected at one end and extending along side each other to the opposite ends which are spaced apart, said first support having an opening intermediate its length for passage of said guide means to direct movement of said valve member, recessed projections in said housing providing pockets for the reception of said ends of said first support, one of said pockets being formed with a slotted opening for the passage of said spaced apart ends of said first support, and a second support for said guide means carried by said housing adjacent said inlet end of said housing, said first and second supports permitting said valve member and guide means to move laterally for seating of said valve member on said valve seat.

Claim 6

A fluid flow check valve assembly comprising a housing having a chamber formed with an apertured wall across one end and a pair of pockets in opposed relation on opposite sides of said chamber and spaced away from said aperture wall in the direction of flow through said chamber, one of said pockets being formed with an opening directed inwardly of said chamber and the other pocket being formed with a slotted opening, support means mounted in said apertured wall, a check valve movably engaged on said support means and guided into a position closing said wall aperture, guide means projecting from said check valve into said chamber between said pair of pockets, a collar loosely engaged on said guide means, an elongated support having opposite ends seated in said pockets and positioned thereby to be engaged by and support said collar, said elongated support being formed with a pair of legs integrally joined at one end for engagement in said one pocket and the opposite end of said elongated support terminating with leg endings normally spaced apart and movable together for passage through said slotted opening of said other pocket to install and remove said elongated support, and a resilient element engaged on said check valve and on said collar and normally urging said check valve into the wall aperture closing position.

Claim 7

A fluid flow check valve assembly comprising a housing having a chamber formed with an apertured wall across one end and a pair of pockets in opposed relation on opposite sides of said chamber and spaced away from said aperture wall in the direction of flow through said chamber, one of said pockets being formed with an opening directed inwardly of said chamber and the other pocket being formed with a slotted opening, support means mounted in said apertured wall, a check valve movably engaged on said support means and guided into a position closing said wall aperture, guide means projecting from said check valve into said chamber between said pair of pockets, a collar loosely engaged on said guide means, an elongated support having opposite ends seated in said pockets and positioned thereby to be engaged by and support said collar, said elongated support being formed with a pair of legs integrally joined at one end for engagement in said one pocket and the opposite end of said elongated support terminating with leg endings normally spaced apart and movable together for passage through said slotted opening of said other pocket to install and remove said elongated support, and a resilient element engaged on said check valve and on said collar and normally urging said check valve into the wall aperture closing position.

Claim 8

The fluid flow check valve of claim 4 wherein said collar is formed with a flared end to engage said resilient element and a shaped neck of less size than said flared end to receive said guide means projecting from said check valve.

Claim 9

The fluid flow check valve of claim 5 wherein said flared end of said collar forms a seat for said resilient element, and said collar, elongated element and resilient element are interconnected against relative rotation.

Claim 10

In a check valve assembly the combination of: a housing having a wall with an aperture therethrough for the flow of fluid, a check valve body movable to open and close said aperture, a first support adjacent said aperture, guide means carried by said valve body and loosely engaged in said first support to direct said valve body movement into a position closing said aperture, resilient means in the form of a conical spring having a small end bearing on said valve body and an enlarged end remote from said valve body, said spring being adapted to normally hold said valve body in the aperture closing position, and means to retain said resilient means in operative position comprising the subcombination of a second support removably engaged with said housing on the side of said valve body remote from said housing aperture, a concically flared collar engaged with said second support and with said enlarged end of said resilient element, said second support having an enlarged opening therein and said collar having an operative engagement with said enlarged opening to permit lateral movement of said valve body during opening and closing movement of said valve body, a tang on said enlarged end of said resilient element directed to engage said flared collar and said second support, said guide means on said valve body extending through said conical spring and said collar, and said small end of said conical spring having an interference fit on said guide means to prevent rotation of said valve body during movement.

Claim 11

In a check valve assembly the combination of: a housing having a wall with an aperture therethrough for the flow of fluid, a check valve body movable to open and close said aperture, a first support adjacent said aperture, guide means carried by said valve body and loosely engaged in said first support to direct said valve body movement into a position closing said aperture, resilient means in the form of a conical spring having a small end bearing on said valve body and an enlarged end remote from said valve body, said spring being adapted to normally hold said valve body in the aperture closing position, and means to retain said resilient means in operative position comprising the subcombination of a second support removably engaged with said housing on the side of said valve body remote from said housing aperture, a concically flared collar engaged with said second support and with said enlarged end of said resilient element, said second support having an enlarged opening therein and said collar having an operative engagement with said enlarged opening to permit lateral movement of said valve body during opening and closing movement of said valve body, a tang on said enlarged end of said resilient element directed to engage said flared collar and said second support, said guide means on said valve body extending through said conical spring and said collar, and said small end of said conical spring having an interference fit on said guide means to prevent rotation of said valve body during movement.