US3552434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cammed plug valve
Assignee: WHEATLEY PUMP & VALVE Inc
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Filing: 1969-04-18
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Granted: 1971-01-05
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Expires: 1989-04-18
Abstract
Abstract The invention relates to a plug valve including a body having a fluid passageway therethrough, a cylindrical plug chamber in the passageway, and a generally cylindrical plug rotatably positioned in the chamber, the plug having an axial opening therethrough alignable with the fluid passageway in one position and transverse to the fluid passageway in the other, the plug member having a cam surface thereon engageable with the body to force the plug against the body to block fluid flow when the valve is in the closed position.
Inventors
- 👤 Norman H Haenky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:29
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K37/00; F16K37/0008; F16K37/0016; F16K5/14; F16K5/18; F16K5/184; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8275
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
352 words
A cammed plug valve comprising: a valve body having a fluid inlet passageway and a fluid outlet passageway therethrough communicating with a generally circular plug chamber, the plug chamber extending from and forming an opening in the top of the valve body and terminating adjacent the closed bottom of the valve body, the valve body including a reduced diameter circular trunnion recess in the lower portion thereof, the valve body including in said plug chamber a portion providing a body cam-engaging surface diametrically opposed to said fluid inlet, and a member surrounding said fluid inlet passageway forming a body seating-surface in said plug chamber; a generally cylindrical plug member rotatably received in the body plug chamber, the plug member being rotatable between an opened and a closed position, one portion of the plug member cylindrical surface serving as a plug-sealing surface, the plug member having a fluid passageway opening therethrough perpendicular the cylindrical axis and spaced from the said plug sealing surface, the plug member including an upwardly extending reduced diameter stem and a downwardly extending trunnion rotatably received in said trunnion recess in said body, said trunnion and said stem being coaxial, said plug member having a diameter measured in a plane perpendicular the cylindrical axis and in the plane of the fluid passageway therethrough less than the diameter measured in a plane perpendicular the cylindrical axis and perpendicular the plane of the fluid passageway therethrough, the last-mentioned diameter being such that the surface of the plug member opposite the sealing surface contacts said body cam-engaging surface and forces said plug-sealing surface into sealing engagement with said body-seating surface as said plug member is rotated to the closed position, the force closing said seating surface being applied by said plug member engaging said valve body and without exerting lateral force on said stem and trunnion; and a cover member sealably closing the upper end of said plug chamber, said cover member having an opening therein sealably and rotatably receiving said plug stem, a portion of which plug stem extends externally of the cover member providing means of rotating said plug member.
Claim 2
Dependent Claim
352 words
A cammed plug valve comprising: a valve body having a fluid inlet passageway and a fluid outlet passageway therethrough communicating with a generally circular plug chamber, the plug chamber extending from and forming an opening in the top of the valve body and terminating adjacent the closed bottom of the valve body, the valve body including a reduced diameter circular trunnion recess in the lower portion thereof, the valve body including in said plug chamber a portion providing a body cam-engaging surface diametrically opposed to said fluid inlet, and a member surrounding said fluid inlet passageway forming a body seating-surface in said plug chamber; a generally cylindrical plug member rotatably received in the body plug chamber, the plug member being rotatable between an opened and a closed position, one portion of the plug member cylindrical surface serving as a plug-sealing surface, the plug member having a fluid passageway opening therethrough perpendicular the cylindrical axis and spaced from the said plug sealing surface, the plug member including an upwardly extending reduced diameter stem and a downwardly extending trunnion rotatably received in said trunnion recess in said body, said trunnion and said stem being coaxial, said plug member having a diameter measured in a plane perpendicular the cylindrical axis and in the plane of the fluid passageway therethrough less than the diameter measured in a plane perpendicular the cylindrical axis and perpendicular the plane of the fluid passageway therethrough, the last-mentioned diameter being such that the surface of the plug member opposite the sealing surface contacts said body cam-engaging surface and forces said plug-sealing surface into sealing engagement with said body-seating surface as said plug member is rotated to the closed position, the force closing said seating surface being applied by said plug member engaging said valve body and without exerting lateral force on said stem and trunnion; and a cover member sealably closing the upper end of said plug chamber, said cover member having an opening therein sealably and rotatably receiving said plug stem, a portion of which plug stem extends externally of the cover member providing means of rotating said plug member.
Claim 3
Dependent Claim
69 words
A valve according to claim 1 wherein said inlet passageway is partially defined by an enlarged diameter portion communicating with said plug chamber, and including a tubular seal member received in said enlarged diameter portion of said inlet passageway, said seal member projecting slightly into said plug chamber and providing a concaved configured sealing surface slightly engaging said plug-sealing surface when said plug is rotated to the closed position.
Claim 4
Dependent Claim
73 words
A valve according to claim 2 wherein said tubular seal member includes: an inner annular insert of nondeformable material forming a continuation of said inlet passageway; and an outer annular seal of deformable material surrounding said inner insert and projecting slightly beyond said inner insert into the plug chamber, both said inner and outer inserts having concave faces for sealing engagement with said plug-sealing surface when said plug is in the closed position.
Claim 5
Dependent Claim
60 words
A valve according to claim 1 wherein said downwardly extending trunnion is defined in a plane perpendicular the axis thereof by a semicircular cross-sectional configUration, the radius of the semicircular peripheral surface being slightly less than the radius of said valve body trunnion recess, said semicircular peripheral surface being on the side of said plug member opposite said plug-sealing surface.
Claim 6
Dependent Claim
34 words
A valve according to claim 4 wherein said plug member trunnion is further defined, in a cross section perpendicular the plug member axis by rounded edges at each end of the semicircular peripheral surface.
Claim 7
Dependent Claim
43 words
A valve according to claim 1 wherein said downwardly extending trunnion is tubular, the interior thereof communicating with said fluid passageway in said plug member and wherein said body includes a fluid bypass opening in the bottom thereof coaxial with said trunnion recess.
Claim 8
Dependent Claim
27 words
A valve according to claim 6 wherein said fluid bypass opening is threaded and including a removable externally thread plug member received in said fluid bypass opening.
Claim 9
Dependent Claim
102 words
A valve according to claim 1 wherein said fluid passageway opening in said plug member includes an inlet portion and an outlet portion, said inlet portion communicating with said plug-sealing surface, and when said plug member is in the closed position with said body member fluid inlet passageway, the outlet portion of said plug member fluid passageway having a width, measured in a plane perpendicular the plug member rotational axis, of at least 90* of the plug member cylindrical surface whereby the outlet portion of said plug member fluid passageway is at all times in communication with said body fluid outlet passageway.
Claim 10
Dependent Claim
58 words
A valve according to claim 8 wherein said downwardly extending trunnion is tubular, the interior thereof communicating with said fluid passageway in said plug member and wherein said body includes a fluid bypass opening in the bottom thereof coaxial with said trunnion recess, said bypass opening thereby having, at all times, fluid communication with said body outlet passageway.
Claim 11
Dependent Claim
188 words
A valve according to claim 1 including a position control means comprising: a stop element extending from the outer surface of said valve cover member, said stop member being generally parallel to and spaced from said stem; a flat, circular locking element having a central opening snugly receiving said valve stem exteriorly of said plate member, said elements being split and having a pair of paralleled, substantially radial leg portions, one of said leg portions extending to each side of said split, one of said leg portions having an opening therein in the plane of said circular element and perpendicular the leg portion and the other leg portion having a threaded opening therein in axial alignment with said first mentioned opening, the circular element having a reduced radius portion partially defining the periphery, said reduced radius portion receiving said stop element; and a bolt received in said openings in said leg portions causing said locking element, when said bolt is tightened, to grip said stem, the boundaries of said reduced radius peripheral portion serving to limit the rotation of said stem as said boundaries engage said stop element.
Claim 12
Dependent Claim
43 words
A valve according to claim 10 wherein said locking element has spaced indicating marks on the upper surface adjacent the periphery of said reduced radius portion, said indicating marks serving to indicate, relative to said stop element, the rotational position of said stem.
Claim 13
Dependent Claim
197 words
For use with a valve having a rotatable stem extending through a valve cover member, a rotational control means comprising: a stop element extending from the outer surface of said valve cover member, said stop member being generally parallel to and spaced from said stem; a flat, circular locking element having a central opening snugly receiving said valve stem exteriorly of said plate member, said elements being split and having a pair of paralleled, substantially radial leg portion, one of said leg portions extending to each side of said split, one of said leg portions having an opening therein in the planE of said circular element and perpendicular to the leg portion and the other leg portion having a threaded opening therein in axial alignment with said first mentioned opening, the circular element having a reduced radius portion partially defining the periphery, said reduced radius portion receiving said stop element; and a bolt received in said openings in said leg portions causing said locking element, when said bolt is tightened, to grip said stem, the boundaries of said reduced radius peripheral portion serving to limit the rotation of said stem as said boundaries engaged said stop elements.
Claim 14
Dependent Claim
197 words
For use with a valve having a rotatable stem extending through a valve cover member, a rotational control means comprising: a stop element extending from the outer surface of said valve cover member, said stop member being generally parallel to and spaced from said stem; a flat, circular locking element having a central opening snugly receiving said valve stem exteriorly of said plate member, said elements being split and having a pair of paralleled, substantially radial leg portion, one of said leg portions extending to each side of said split, one of said leg portions having an opening therein in the planE of said circular element and perpendicular to the leg portion and the other leg portion having a threaded opening therein in axial alignment with said first mentioned opening, the circular element having a reduced radius portion partially defining the periphery, said reduced radius portion receiving said stop element; and a bolt received in said openings in said leg portions causing said locking element, when said bolt is tightened, to grip said stem, the boundaries of said reduced radius peripheral portion serving to limit the rotation of said stem as said boundaries engaged said stop elements.
Claim 15
Dependent Claim
45 words
A rotational control means according to claim 12 wherein said locking element has spaced indicating marks on the upper surface adjacent the periphery of said reduced radius portion, said indicating marks serving to indicate, relative to said stop element, the rotational position of said stem.
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |