Check valve
First Claim
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1. A check valve assembly to control a flow of a pressurized medium in a fluid pressure system, said check valve assembly comprising:
- (a) a housing member having a cavity therein, said cavity being in fluid communication with a source of fluid pressure at an inlet side thereof and being in fluid communication with a consuming source of said fluid pressure at an outlet side thereof;
(b) an inlet valve formed by a valve seat positioned within said cavity and a valve body positioned within said cavity in a position to sealingly engage said valve seat when said check valve is in a closed position;
(c) a valve body guide means positioned within said cavity for guiding said valve body during an opening and closing of said check valve, said valve body being pressed against said guide means when said inlet valve is undergoing said opening and a force generated by said pressurized medium is greater than that exerted by said presssurized medium when said check valve is closed; and
(d) a valve spring engageable with said valve body to prestress said valve body against said valve seat when said check valve is closed, said valve spring being positioned in relationship to said valve body in a manner such that a point of impact on said valve body by a deformation line of said valve spring in relationship to said force generated by said pressurized medium is offset.
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Abstract
A check valve assembly in which a valve spring is positioned with respect to the valve body in a manner such that the deformation line of such valve spring is one of offset and inclined in relation to the longitudinal axis of the valve body so that one side of such valve body is pressed against a guide provided for such valve body while the inlet valve is in an open position. The valve body of the check valve is prestressed against a valve seat by the valve spring.
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Citations
16 Claims
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1. A check valve assembly to control a flow of a pressurized medium in a fluid pressure system, said check valve assembly comprising:
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(a) a housing member having a cavity therein, said cavity being in fluid communication with a source of fluid pressure at an inlet side thereof and being in fluid communication with a consuming source of said fluid pressure at an outlet side thereof; (b) an inlet valve formed by a valve seat positioned within said cavity and a valve body positioned within said cavity in a position to sealingly engage said valve seat when said check valve is in a closed position; (c) a valve body guide means positioned within said cavity for guiding said valve body during an opening and closing of said check valve, said valve body being pressed against said guide means when said inlet valve is undergoing said opening and a force generated by said pressurized medium is greater than that exerted by said presssurized medium when said check valve is closed; and (d) a valve spring engageable with said valve body to prestress said valve body against said valve seat when said check valve is closed, said valve spring being positioned in relationship to said valve body in a manner such that a point of impact on said valve body by a deformation line of said valve spring in relationship to said force generated by said pressurized medium is offset. - View Dependent Claims (2, 3)
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4. A check valve assembly to control a flow of a pressurized medium in a fluid pressure system, said check valve assembly comprising:
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(a) a housing member having a cavity therein, said cavity being in fluid communication with a source of fluid pressure at an inlet side thereof and being in fluid communication with a consuming source of said fluid pressure at an outlet side thereof; (b) an inlet valve formed by a valve seat positioned within said cavity and a valve body positioned within said cavity in a position to sealingly engage said valve seat when said check valve is in a closed position; (c) an extension member connected to and protruding from said valve body; (d) a valve body guide means positioned within said cavity for guiding said valve body during an opening and closing of said check valve, one of said extension member and said valve body being pressed against said guide means when said inlet valve is undergoing said opening and a force generated by said pressurized medium is greater that that exerted by said pressurized medium when said check valve is closed; and (e) a valve spring engageable with said valve body to prestress said valve body against said valve seat when said check valve is closed, said valve apring being positioned in relationship to said valve body in a manner such that a point of impact on said valve body by a deformation line of said valve spring in relationship to said force generated by said pressurized medium is offset. - View Dependent Claims (5, 6, 7, 8, 9)
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10. A check valve assembly to control a flow of a pressurized medium in a fluid pressure system, said check valve assembly comprising:
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(a) a housing member having a cavity therein, said cavity being in fluid communication with a source of fluid pressure at an inlet side thereof and being in fluid communication with a consuming source of said fluid pressure at an outlet side thereof; (b) an inlet valve formed by a valve seat positioned within said cavity and a valve body positioned within said cavity in a position to sealingly engage said valve seat when said check valve is in a closed position; (c) a valve body guide means positioned within said cavity for guiding said valve body during an opening and closing of said check valve, said valve body being pressed against said guide means when said inlet valve is undergoing said opening and a force generated by said pressurized medium is greater than that exerted by said pressurized medium when said check valve is closed; and (d) a valve spring engageable with said valve body to prestress said valve body against said valve seat when said check valve is closed, said valve spring being positioned in relationship to said valve body in a manner such that a point of impact on said valve body by a deformation line of said valve spring in relationship to said force generated by said pressurized medium is inclined. - View Dependent Claims (11, 12, 13)
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14. A check valve assembly to control a flow of a pressurized medium in a fluid pressure system, said check valve assembly comprising:
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(a) a housing member having a cavity therein, said cavity being in fluid communication with a source of fluid pressure at an inlet side thereof and being in fluid communication with a consuming source of said fluid pressure at an outlet side thereof; (b) an inlet valve formed by a valve seat positioned within said cavity and a valve body positioned within said cavity in a position to sealingly engage said valve seat when said check valve is in a closed position; (c) an extension member connected to and protruding from said valve body; (d) a valve body guide means positioned within said cavity for guiding said valve body during an opening and closing of said check valve, one of said extension member and said valve body being pressed against said guide means when said inlet valve is undergoing said opening and a force generated by said pressurized medium is greater than that exerted by said pressurized medium when said check valve is closed; and (e) a valve spring engagable with said valve body to prestress said valve body against said valve seat when said check valve is closed, said valve spring being positioned in relationship to said valve body in a manner such that a point of impact on said valve body by a deformation line of said valve spring in relationship to said force generated by said pressurized medium is inclined. - View Dependent Claims (15, 16)
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Specification