Check valve actuator
First Claim
Patent Images
1. A check valve actuator havinga body being hollow and havinga front end;
- a rear end;
a top;
a mounting collar being tubular, formed on and protruding longitudinally from the front end of the body and having an internal surface;
a convex ridge formed diametrically across and protruding from the rear end of the body;
an internal cavity formed inside the body and having a closed rear wall;
a through hole formed coaxially through the rear end of the body and communicating with the internal cavity;
a discharge port formed in the top of the body and communicating with the internal cavity; and
a discharge fitting being a tube, mounted in the discharge port and communicating with the internal cavity;
a sliding seat being tubular, mounted slidably against the internal surface of the internal cavity and havingan inner end communicating with the discharge port;
an internal surface; and
an annular seat formed on and protruding radially from the internal surface of the sliding seat near the inner end of the sliding seat end and havingan inner shoulder;
an outer inclined seat; and
a through hole formed coaxially through the annular seat and having an inner diameter;
a drive shaft slidably mounted in the internal cavity of the body through the sliding seat and the through hole of the body and havinga front end;
a threaded rear end;
an annular flange formed around and protruding radially out from the drive shaft and having a diameter smaller than the inner diameter of the through hole in the annular seat;
an annular disk formed around and protruding radially out from the drive shaft slightly forward of the annular flange and having a diameter larger than the inner diameter of the through hole in the annular seat;
an annular groove formed around the drive shaft between the annular flange and the threaded end of the drive shaft;
a shaft O-ring mounted in the annular groove to seal the through hole in the body; and
a disk O-ring mounted between the annular flange and the annular disk and selectively pressing against the outer inclined seat of the annular seat; and
a spring assembly mounted around the drive shaft, abutting the closed rear wall of the internal cavity, pressing the sliding seat and the drive shaft forward and havinga sliding seat spring mounted against the inner shoulder of the annular seat and pressing the annular seat forward and has a diameter; and
a drive shaft spring mounted inside the sliding seat spring against the annular flange on the drive shaft and pressing the drive shaft forward and has a diameter smaller than the diameter of the sliding seat spring; and
a knob attached to the threaded rear end of the drive shaft, pressing against the rear end of the body and havinga front end;
a rear end;
a contact surface formed on the front end of the knob, corresponding to the rear end of the body, connected to the drive shaft and havinga diametric groove corresponding to the convex ridge on the rear end of the body; and
two flat surface formed on the front end of the knob adjacent to the diametric groove;
a center; and
a threaded hole formed through the center of the knob and screwing onto the threaded rear end of the drive shaft to securely attach the knob to the drive shaft.
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Abstract
A check valve actuator has a body, a sliding seat, a drive shaft, a spring assembly and a knob. The body has a mounting collar, a convex ridge, an internal cavity and a through hole. The mounting collar is formed on the front end of the body and has an internal surface. The internal cavity is formed inside the body. The through hole communicates with the internal cavity. The sliding seat is mounted slidably against the internal surface of the internal cavity and has an annular seat. The drive shaft is extends through the internal cavity and the through hole in the body. The spring assembly is pressed between the closed rear wall of the internal cavity and the annular seat and the drive shaft. The knob is attached to the drive shaft at the rear end of the body.
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Citations
1 Claim
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1. A check valve actuator having
a body being hollow and having a front end; -
a rear end; a top; a mounting collar being tubular, formed on and protruding longitudinally from the front end of the body and having an internal surface; a convex ridge formed diametrically across and protruding from the rear end of the body; an internal cavity formed inside the body and having a closed rear wall; a through hole formed coaxially through the rear end of the body and communicating with the internal cavity; a discharge port formed in the top of the body and communicating with the internal cavity; and a discharge fitting being a tube, mounted in the discharge port and communicating with the internal cavity; a sliding seat being tubular, mounted slidably against the internal surface of the internal cavity and having an inner end communicating with the discharge port; an internal surface; and an annular seat formed on and protruding radially from the internal surface of the sliding seat near the inner end of the sliding seat end and having an inner shoulder; an outer inclined seat; and a through hole formed coaxially through the annular seat and having an inner diameter; a drive shaft slidably mounted in the internal cavity of the body through the sliding seat and the through hole of the body and having a front end; a threaded rear end; an annular flange formed around and protruding radially out from the drive shaft and having a diameter smaller than the inner diameter of the through hole in the annular seat; an annular disk formed around and protruding radially out from the drive shaft slightly forward of the annular flange and having a diameter larger than the inner diameter of the through hole in the annular seat; an annular groove formed around the drive shaft between the annular flange and the threaded end of the drive shaft; a shaft O-ring mounted in the annular groove to seal the through hole in the body; and a disk O-ring mounted between the annular flange and the annular disk and selectively pressing against the outer inclined seat of the annular seat; and a spring assembly mounted around the drive shaft, abutting the closed rear wall of the internal cavity, pressing the sliding seat and the drive shaft forward and having a sliding seat spring mounted against the inner shoulder of the annular seat and pressing the annular seat forward and has a diameter; and a drive shaft spring mounted inside the sliding seat spring against the annular flange on the drive shaft and pressing the drive shaft forward and has a diameter smaller than the diameter of the sliding seat spring; and a knob attached to the threaded rear end of the drive shaft, pressing against the rear end of the body and having a front end; a rear end; a contact surface formed on the front end of the knob, corresponding to the rear end of the body, connected to the drive shaft and having a diametric groove corresponding to the convex ridge on the rear end of the body; and two flat surface formed on the front end of the knob adjacent to the diametric groove; a center; and a threaded hole formed through the center of the knob and screwing onto the threaded rear end of the drive shaft to securely attach the knob to the drive shaft.
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Specification
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Current AssigneeChing-Su Chiu
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Original AssigneeChing-Su Chiu
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InventorsChiu, Ching-Su
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Primary Examiner(s)LEE, KEVIN L
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Application NumberUS11/341,348Time in Patent Office521 DaysField of Search137/614, 137/614.03, 137/614.04, 137/614.05, 251/264, 251/149.1, 251/149.6US Class Current251/264CPC Class CodesF16K 15/063 the valve being loaded by a...F16K 15/18 with actuating mechanism; C...Y10T 137/87949 Linear motion of flow path ...Y10T 137/87965 Valve- or closure-operated ...
