US3787022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iris check valve and use thereof
Assignee: Individual
•
Filing: 1972-05-22
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Granted: 1974-01-22
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Expires: 1992-05-22
Abstract
Abstract An iris type check valve is provided having at least one matched pair of vanes which are actuated by a rotating plate to modify the size of the orifice and thus regulate flow of materials through the unit. The vanes are constructed to provide an interlocking of the respective vane members of the matched pair. Thus the valve unit is capable of withstanding extremely high fluid pressures. The use of the valve in discovery and production of underground fluids is also described.
Inventors
- 👤 C Wilcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:52
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/03
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
236 words
An iris type check valve for regulating the flow of fluids therethrough which comprises a generally circular casing having a fluid inlet and outlet means concentrically disposed along the central axis of the valve, and having disposed into the interior thereof on an axis which is about a ninety degree angle to the central axis at least one pair of pivot pins; a drive means extending into the interior of the casing suitably activated by a power source; a concentric actuator plate means engaged to be rotated in a generally circular path by said drive means and having mounted thereon at least one pair of activator pins; and at least one vane plate comprising a pair of matched vane members each of which are generally trianguar in shape, the apex thereof having means engaging said pivot pins and a cam slot engaging said activator pins, one member of said vane pair having a projecting portion which coincidentally fits into a recessed portion of the other member of said vane pair such that when the vane members engage one another in a closed position the vane plate is of substantially uniform thickness; and each of said vane members having the coincidentally fitting edge thereof defined to form a half-circle, the radius of which is equal to one-half the diameter of the opening formed by the vane members when fully disengaged by the rotation of said actuator plate.
Claim 2
Dependent Claim
236 words
An iris type check valve for regulating the flow of fluids therethrough which comprises a generally circular casing having a fluid inlet and outlet means concentrically disposed along the central axis of the valve, and having disposed into the interior thereof on an axis which is about a ninety degree angle to the central axis at least one pair of pivot pins; a drive means extending into the interior of the casing suitably activated by a power source; a concentric actuator plate means engaged to be rotated in a generally circular path by said drive means and having mounted thereon at least one pair of activator pins; and at least one vane plate comprising a pair of matched vane members each of which are generally trianguar in shape, the apex thereof having means engaging said pivot pins and a cam slot engaging said activator pins, one member of said vane pair having a projecting portion which coincidentally fits into a recessed portion of the other member of said vane pair such that when the vane members engage one another in a closed position the vane plate is of substantially uniform thickness; and each of said vane members having the coincidentally fitting edge thereof defined to form a half-circle, the radius of which is equal to one-half the diameter of the opening formed by the vane members when fully disengaged by the rotation of said actuator plate.
Claim 3
Dependent Claim
72 words
The valve of claim 1 wherein the valve contains at least two pairs of pivot pins each located at a ninety degree angle to the central axis and from one another and at least two of said vane plates, one vane plate being mounted immediately adjacent to the other plate so said plates slide over one another when the pairs of matched vane members move laterally to open or close the valve.
Claim 4
Dependent Claim
43 words
The valve of claim 1 wherein the matched vane members are retained in an open or closed relation by an adjustable tension means, one of which engages each of said vane members to apply a force against the direction of lateral movement thereof.
Claim 5
Dependent Claim
35 words
The valve of claim 1 wherein the casing includes a concentric sealing ring attached to the inlet side of the casing to which is removably attached a bottom plate having mounted thereon said inlet means.
Claim 6
Dependent Claim
20 words
The valve of claim 1 wherein the inlet and outlet means are adapted to be attached to fluid transmitting pipe.
Claim 7
Dependent Claim
33 words
The valve of claim 1 wherein the actuating plate includes a concentric raised surface on which said vane members slidably contact as said members are moved laterally to open and close the valve.
Claim 8
Dependent Claim
27 words
The valve of claim 1 wherein the drive means is a gear which is engaged with gear teeth provided on the outer edge of saId activating plate.
Claim 9
Dependent Claim
13 words
The valve of claim 1 wherein the power source is an electrical motor.
Claim 10
Dependent Claim
51 words
The valve of claim 8 wherein the electrical motor is provided in combination with a current switching means and a magnetic brake, the current being supplied to the motor thus being capable of being transferred from the motor to said brake to hold the valve in a closed or open position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |