Flow sensitive valve mechanism

Claim 2

A fluid flow sensitive valve assembly comprising: a housing having a valve chamber formed therein and first and second and third inlet-outlet ports communicating with said chamber, said first and second ports being generally axially aligned and on opposite sides of said chamber, said third port having a valve seat at said chamber, said chamber having side walls and being generally oblong in the direction of flow between said first and second ports; a movable valve in said chamber having a valve body engageable with said valve seat, a guide pin on said valve body extending through said valve seat and into said third port, and fin means extending from aid valve body and toward said first and second ports at acute angles to the port axes so as to present a first angularly disposed surface to said first port and a second angularly disposed surface to said second port, said fin means having a pivot axis extending transversely of the direction of flow between said first and second ports, said fin means engaging said chamber side walls along said axis for pivotal and sliding support, said pivot axis being displaced toward said first port relative to said guide pin; whereby fluid flowing into said chamber from said first port impinges on said first angularly disposed surface and flows out through said second port to move said valve body to close said valve seat and said third port, and fluid flowing into said chamber from said second port impinges on said second angularly disposed surface and flows out through said first port to move said valve body to open said valve seat and said third port and also thereafter flows out through said third port.

Claim 3

A compensation port control valve for selectively controlling fluid communication of a fluid reservoir with a pressurizing chamber and a pressurizing chamber outlet port in accordance with the direction of fluid flow between the pressurizing chamber and the outlet port, said valve comprising: a valve housing having a flow path including a valve chamber formed therein having an outlet adapted to be fluid connected to a pressurizing chamber outlEt port, a compensation port communicating with said valve chamber and having a valve seat through which said compensation port opens, said compensation port adapted to be connected to a fluid reservoir, and a pressure fluid inlet port in said flow path and communicating with said valve chamber and adapted to be connected to a fluid pressurizing chamber; a valve member movably contained in said valve chamber in flow oriented relation for pivotal movement about an axis transverse to said flow path and for translatable movement toward and away from impingement valve seat and having a valve body extending into and selectively matable with said valve seat to selectively open and close said valve housing compensation port, said valve member having a plurality of flow-impingeable surfaces on said valve body positioned in acute angular relation to the portion of said flow path at said valve chamber outlet so that fluid flowing from said pressure fluid inlet port through said flow path to said valve chamber outlet impinge on at least one of said surfaces and moves said valve body by fluid impingement reaction to close said valve body against said valve seat and thereby close said compensation port, and fluid flowing in reverse by returning along said flow path through said outlet and into said valve chamber impinging on at least one of said surfaces and moving said valve body by fluid impingment reaction to open said valve seat and thereby open said compensation port whereby fluid communication between said compensation port and said valve chamber is established to provide fluid compensation.

Claim 4

A compensation port control valve for selectively controlling fluid communication of a fluid reservoir with a pressurizing chamber and a pressurizing chamber outlet port in accordance with the direction of fluid flow between the pressurizing chamber and the outlet port, said valve comprising: a valve housing having a flow path including a valve chamber formed therein having an outlet adapted to be fluid connected to a pressurizing chamber outlEt port, a compensation port communicating with said valve chamber and having a valve seat through which said compensation port opens, said compensation port adapted to be connected to a fluid reservoir, and a pressure fluid inlet port in said flow path and communicating with said valve chamber and adapted to be connected to a fluid pressurizing chamber; a valve member movably contained in said valve chamber in flow oriented relation for pivotal movement about an axis transverse to said flow path and for translatable movement toward and away from impingement valve seat and having a valve body extending into and selectively matable with said valve seat to selectively open and close said valve housing compensation port, said valve member having a plurality of flow-impingeable surfaces on said valve body positioned in acute angular relation to the portion of said flow path at said valve chamber outlet so that fluid flowing from said pressure fluid inlet port through said flow path to said valve chamber outlet impinge on at least one of said surfaces and moves said valve body by fluid impingement reaction to close said valve body against said valve seat and thereby close said compensation port, and fluid flowing in reverse by returning along said flow path through said outlet and into said valve chamber impinging on at least one of said surfaces and moving said valve body by fluid impingment reaction to open said valve seat and thereby open said compensation port whereby fluid communication between said compensation port and said valve chamber is established to provide fluid compensation.

Claim 5

A fluid flow sensitive valve assembly comprising: a housing having a valve chamber formed therein and first and second and third inlet-outlet ports communicating with said chamber, said first and second ports being generally axially aligned and on opposite sides of said chamber, said third port having a spherical section valve seat at said chamber; a movable valve in said chamber having a valve body formed with a spherical section valve element engageable with said valve seat, a guide pin on said valve body extending through said valve seat and into said third port, and fluid impingement surface means extending from said valve body and toward said first and second ports at acute angles to the first and second port axes so as to present a first angularly disposed surface to said first port and a second angularly disposed surface to said second port, said first angularly disposed surface having pivot points provided on either side thereof between said valve body and said first port and engaging the sides of said chamber on a pivot axis which is skew and substantially perpendicular to the first, second and third port axes, the axis of said third port being substantially perpendicular to the axes of said first and second ports, whereby fluid flowing into said chamber from said first port impinges on said first and second angularly disposed surface and flows out through said second port to pivot said valve on said pivot axis to move said valve body valve element to close said valve seat and said third port, and fluid flowing into said chamber from said second port impinges on said second and first angularly disposed surface, and flows out through said first port to pivot said valve on said pivot axis to move said valve body element to open said valve seat and said third port and also thereafter flows out of said chamber through said third port, said movable valve having a specific gravity greater than the fluid in said chamber whereby, when there is no fluid flow in said chamber and the fluid pressure in said third port is no less than the fluid pressure in said chamber, said valve remains open or if closed tends to pivot open under gravity to keep said third port open under such conditions.

Claim 6

A fluid flow sensitive valve assembly comprising: a housing having a valve chamber formed therein and first and second and third inlet-outlet ports communicating with said chamber, said first and second ports being generally axially aligned and on opposite sides of said chamber, said third port having a spherical section valve seat at said chamber; a movable valve in said chamber having a valve body formed with a spherical section valve element engageable with said valve seat, a guide pin on said valve body extending through said valve seat and into said third port, and fluid impingement surface means extending from said valve body and toward said first and second ports at acute angles to the first and second port axes so as to present a first angularly disposed surface to said first port and a second angularly disposed surface to said second port, said first angularly disposed surface having pivot points provided on either side thereof between said valve body and said first port and engaging the sides of said chamber on a pivot axis which is skew and substantially perpendicular to the first, second and third port axes, the axis of said third port being substantially perpendicular to the axes of said first and second ports, whereby fluid flowing into said chamber from said first port impinges on said first and second angularly disposed surface and flows out through said second port to pivot said valve on said pivot axis to move said valve body valve element to close said valve seat and said third port, and fluid flowing into said chamber from said second port impinges on said second and first angularly disposed surface, and flows out through said first port to pivot said valve on said pivot axis to move said valve body element to open said valve seat and said third port and also thereafter flows out of said chamber through said third port, said movable valve having a specific gravity greater than the fluid in said chamber whereby, when there is no fluid flow in said chamber and the fluid pressure in said third port is no less than the fluid pressure in said chamber, said valve remains open or if closed tends to pivot open under gravity to keep said third port open under such conditions.