Patent US3814380A successfully refreshed from Google Patents.
US3814380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable body seat for butterfly valves
Assignee: SPX Technologies Inc
•
Filing: 1972-11-20
•
Granted: 1974-06-04
•
Expires: 1992-11-20
Abstract
Abstract The disclosure concerns a butterfly valve having a resilient, adjustable body seat for the pivoting disc. The seat comprises an elastomeric ring which is confined at one end by the transverse wall of an annular groove in the valve body and at the other end by a clamping ring which slides along the wall of the flow passage extending through the body. The clamping ring is forced against the seat ring by a plurality of individual screw actuators spaced around its circumference, and therefore selected portions of the seat ring can be compressed as needed to produce a leak-free seal around the entire periphery of the pivoting disc.
Inventors
- 👤 K Kormos
- 👤 D Szilagyi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:14
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/226; F16K1/2263
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
236 words
In a butterfly valve including a body containing a through flow passage, and a pivoting disc which cooperates with a seat To control flow through the passage, an improved seat arrangement which comprises a. a continuous annular groove formed in the wall of said passage and encircling the axis of the passage; b. an elastomeric seat ring mounted in and filling the groove and having an inner peripheral surface which serves as a seating surface for the disc, and transverse end faces at opposite sides of the seating surface, the first end face conforming to and bearing against a transverse wall of the groove and the second end face projecting inward from the wall of said passage; c. an endless clamping ring fitted to slide along the wall of said passage and formed with an end clamping face which conforms to and engages the second end face of the seat ring; and d. a plurality of individual actuators spaced from one another in the direction of the circumference of the clamping ring and serving to force the ring axially and thereby compress selected portions of the seat ring between the transverse groove wall and the clamping face and produce selective bulging of the seating surface, e. each actuator including a screw threaded element which reacts between a portion of the clamping ring and a transverse body surface which extends outward from the wall of said passage.
Claim 2
Dependent Claim
236 words
In a butterfly valve including a body containing a through flow passage, and a pivoting disc which cooperates with a seat To control flow through the passage, an improved seat arrangement which comprises a. a continuous annular groove formed in the wall of said passage and encircling the axis of the passage; b. an elastomeric seat ring mounted in and filling the groove and having an inner peripheral surface which serves as a seating surface for the disc, and transverse end faces at opposite sides of the seating surface, the first end face conforming to and bearing against a transverse wall of the groove and the second end face projecting inward from the wall of said passage; c. an endless clamping ring fitted to slide along the wall of said passage and formed with an end clamping face which conforms to and engages the second end face of the seat ring; and d. a plurality of individual actuators spaced from one another in the direction of the circumference of the clamping ring and serving to force the ring axially and thereby compress selected portions of the seat ring between the transverse groove wall and the clamping face and produce selective bulging of the seating surface, e. each actuator including a screw threaded element which reacts between a portion of the clamping ring and a transverse body surface which extends outward from the wall of said passage.
Claim 3
Dependent Claim
103 words
The improvement defined in claim 1 in which a. the groove is bounded by said transverse wall, and by a conical wall which intersects the wall of said passage; b. said second end face of the seat ring includes at least a portion adjacent the inner periphery which is conical; and c. the seat ring is of trapezoidal shape in cross section and the longer one of its parallel sides lies along the conical wall, whereby the seat ring is mechanically held in said groove by the cooperative action of the transverse groove wall and the end clamping face of the clamping ring.
Claim 4
Dependent Claim
23 words
The improvement defined in claim 2 in which said transverse groove wall lies in a plane normal to the axis of said passage.
Claim 5
Dependent Claim
28 words
The improvement defined in claim 2 in which the second end face of the seat ring and the mating end face of the clamping ring are conical surfaces.
Claim 6
Dependent Claim
31 words
The improvement defined in claim 2 in which the second end face of the seat ring and the mating end face of the clamping ring are partly conical and partly radial.
Claim 7
Dependent Claim
45 words
The improvement defined in claim 5 in which the radial and conical portions of the mating faces of the seat and clamping rings are axially offset to provide a tongue on the seat ring which is held against the valve body by the clamping ring.
Claim 8
Dependent Claim
87 words
The improvement defined in claim 1 in which each actuator comprises a. a recess extending into the valve body from the wall of said passage and having a side wall which constitutes said transverse body surface; b. a clamping block set into the recess and having a projecting portion containing a through, threaded opening aligned with the clamping ring; and c. said threaded element which is screwed into the opening and has an end which bears against the clamping ring at the end opposite the clamping face.
Claim 9
Dependent Claim
15 words
The improvement defined in claim 7 in which said recesses are separate from one another.
Claim 10
Dependent Claim
22 words
The improvement defined in claim 7 in which said recesses are interconnected and form a continuous annular groove extending around the passage.
Claim 11
Dependent Claim
103 words
The improvement defined in claim 7 in which a. said groove is bounded by said transverse wall, and by a conical wall which intersects the wall of said passage; b. said second end face of the seat ring includes at least a portion adjacent the inner periphery which is conical; and c. the seat ring is of trapezoidal shape in cross section and the longer one of its parallel sides lies along the conical wall, whereby the seat ring is mechanically held in said groove by the cooperative action of the transverse groove wall and the end clamping face of the clamping ring.
Claim 12
Dependent Claim
78 words
The improvement defined in claim 1 in which each actuator comprises a. a threaded radial openIng extending through the clamping ring; b. a recess extending into the valve body from the wall of said passage and covered by the clamping ring, the recess having an inclined wall which constitutes said transverse body surface; and c. said threaded element which is screwed into the opening and has a conical end which bears against the inclined wall of the recess.
Claim 13
Dependent Claim
28 words
The improvement defined in claim 11 in which the recesses are interconnected and form a continuous annular groove of V-shape in cross section which extends around the passage.
Claim 14
Dependent Claim
103 words
The improvement defined in claim 11 in which a. said groove is bounded by said transverse wall, and by a conical wall which intersects the wall of said passage; b. said second end face of the seat ring includes at least a portion adjacent the inner periphery which is conical; and c. the seat ring is of trapezoidal shape in cross section and the longer one of its parallel sides lies along the conical wall, whereby the seat ring is mechanically held in said groove by the cooperative action of the transverse groove wall and the end clamping face of the clamping ring.
Claim 15
Dependent Claim
208 words
In a butterfly valve including a body containing a through flow passage, and a pivoting disc which cooperates with a seat to control flow through the passage, an improved seat arrangement which comprises a. a continuous annular groove formed in the wall of said passage and encircling the axis of the passage; b. an elastomeric seat ring mounted in the groove and having an inner peripheral surface which serves as a seating surface for the disc, and transverse end faces at opposite sides of the seating surface, the first end face conforming to and bearing against a transverse wall of the groove; c. a clamping ring mounted in said passage for sliding movement along its wall and formed with an end clamping face which engages the second end face of the seat ring; and d. a plurality of individual actuators spaced around the clamping ring and arranged to force the ring axially and thereby compress selected portions of the seat ring between the transverse groove wall and the clamping face and produce selective bulging of the seating surface, each actuator including a screw threaded element which reacts between a portion of the clamping ring and a transverse body surface which extends outward from the wall of said passage.
Claim 16
Dependent Claim
208 words
In a butterfly valve including a body containing a through flow passage, and a pivoting disc which cooperates with a seat to control flow through the passage, an improved seat arrangement which comprises a. a continuous annular groove formed in the wall of said passage and encircling the axis of the passage; b. an elastomeric seat ring mounted in the groove and having an inner peripheral surface which serves as a seating surface for the disc, and transverse end faces at opposite sides of the seating surface, the first end face conforming to and bearing against a transverse wall of the groove; c. a clamping ring mounted in said passage for sliding movement along its wall and formed with an end clamping face which engages the second end face of the seat ring; and d. a plurality of individual actuators spaced around the clamping ring and arranged to force the ring axially and thereby compress selected portions of the seat ring between the transverse groove wall and the clamping face and produce selective bulging of the seating surface, each actuator including a screw threaded element which reacts between a portion of the clamping ring and a transverse body surface which extends outward from the wall of said passage.
References Cited (Backward Citations)
US1973809A
Cited
US3144040A
Cited
US3393697A
Cited
US3171429A
Cited
US3209778A
Cited
US3290001A
Cited
US3608912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |