Pump
AssigneePhinia Delphi Luxembourg Sarl
InventorsJérôme Simon, Vincent Pichon
Life of this patent
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Abstract
A pump comprising a check valve, which check valve comprises: an axially extending valve bore defined within a pump body of the pump and having an inner surface, a seat member defining an axially extending valve channel and having a mounting portion being press-fitted into the valve bore so that it engages the inner surface and a seat portion disposed proximal with respect to the mounting portion, the seat portion defining a seat surface around a proximal opening of the valve channel, wherein a pilot radius, which is a maximum radius of the seat portion, is at least 95% but less than 100% of valve-bore radius of the valve bore so that the seat portion is out of contact with the inner surface, and a valve member movable with respect to the seat member and engaging the seat surface in a closed position.
Claims15
A pump comprising a check valve extending along a valve axis from a proximal side to a distal side, the check valve comprising:
- a. an axially extending valve bore defined within a pump body of the pump and having an inner surface,
- b. a seat member defining an axially extending valve channel and having a mounting portion being press-fitted into the valve bore so that it engages the inner surface, and a seat portion disposed proximal with respect to the mounting portion, the seat portion defining a seat surface around a proximal opening of the valve channel, wherein a pilot radius, which is a maximum radius of the seat portion, is at least 95% but less than 100% of a valve-bore radius of the valve bore so that the seat portion is out of contact with the inner surface, and
- c. a valve member movable with respect to the seat member and engaging the seat surface in a closed position to close the valve channel,
- wherein a groove portion is axially interposed between the seat portion and the mounting portion, which groove portion defines a groove extending radially inwards between the seat portion and the mounting portion so that the groove portion is at least partially radially spaced from the inner surface by the groove.
A check valve for a pump, the check valve extending along a valve axis from a proximal side to a distal side and comprising in assembled state:
- a. an axially extending valve bore defined within a pump body of the pump and having an inner surface,
- b. a seat member defining an axially extending valve channel and having a mounting portion being press-fitted into the valve bore so that it engages the inner surface, and a seat portion disposed proximal with respect to the mounting portion, the seat portion defining a seat surface around a proximal opening of the valve channel, wherein a pilot radius, which is a maximum radius of the seat portion, is at least 95% but less than 100% of a valve-bore radius of the valve bore so that the seat portion is out of contact with the inner surface, and
- c. a valve member movable with respect to the seat member and engaging the seat surface in a closed position to close the valve channel,
- wherein a groove portion is axially interposed between the seat portion and the mounting portion, which groove portion defines a groove extending radially inwards between the seat portion and the mounting portion so that the groove portion is at least partially radially spaced from the inner surface by the groove.
Dependencies are inferred from the claim text.