US3568975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butterfly fluid flow valve
Assignee: Eaton Corp
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Filing: 1968-03-06
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Granted: 1971-03-09
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Expires: 1988-03-06
Abstract
Abstract A vacuum actuated butterfly fluid flow valve including a valve body having a cylindrical bore formed therein between fluid inlet and outlet connections, a leakproof butterfly valve plate mounted within the bore on a rotatable operating rod and a vacuum motor having an operating member connected to the operating rod for rotating the rod and the valve plate upon actuation of the vacuum motor.
Inventors
- 👤 Frank E Obermaier
- 👤 Arthur A Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:17
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
237 words
A butterfly fluid flow valve comprising: a valve body having a cylindrical bore wall forming a bore therethrough and a fluid inlet and a fluid outlet communicating with said bore; an operating rod rotatably mounted on said valve body and extending into said bore in a direction normal to the direction of said bore; a disc-shaped valve plate having a generally planar configuration disposed within said bore and connected in fixed assembly to said operating rod to rotate therewith about the axis of said rod between a closed position at which said valve plate blocks off said bore to prevent flow therethrough to an open position; the included angle between the axis of said bore and the plane of the valve plate in the closed position thereof being substantially less than 90* , means forming aligned bores in said valve body at the opposite sides of said bore wall for receiving and journaling said operating rod; said valve plate comprising a resilient member and a metal insert embedded in said resilient member; and a portion of said metal insert being exposed to said operating rod for a weld connection therewith, the exposed portion of said metal insert being generally arcuately shaped but having a substantially flat portion extending transversely to the axis of said operating rod to receive said rod and to accommodate variations in the position of said rod due to misalignment of said journaling bores.
Claim 2
Dependent Claim
237 words
A butterfly fluid flow valve comprising: a valve body having a cylindrical bore wall forming a bore therethrough and a fluid inlet and a fluid outlet communicating with said bore; an operating rod rotatably mounted on said valve body and extending into said bore in a direction normal to the direction of said bore; a disc-shaped valve plate having a generally planar configuration disposed within said bore and connected in fixed assembly to said operating rod to rotate therewith about the axis of said rod between a closed position at which said valve plate blocks off said bore to prevent flow therethrough to an open position; the included angle between the axis of said bore and the plane of the valve plate in the closed position thereof being substantially less than 90* , means forming aligned bores in said valve body at the opposite sides of said bore wall for receiving and journaling said operating rod; said valve plate comprising a resilient member and a metal insert embedded in said resilient member; and a portion of said metal insert being exposed to said operating rod for a weld connection therewith, the exposed portion of said metal insert being generally arcuately shaped but having a substantially flat portion extending transversely to the axis of said operating rod to receive said rod and to accommodate variations in the position of said rod due to misalignment of said journaling bores.
Claim 3
Dependent Claim
219 words
A vacuum actuated butterfly fluid flow valve comprising: a vacuum motor having a movable operating member mounted thereon; a valve body having a cylindrical bore wall forming a bore therethrough and a fluid inlet and a fluid outlet communicating with said bore; an operating rod rotatably mounted on said vaLve body and extending into the bore in a direction normal thereto; said operating member being operatively connected to said operating rod to rotate same upon actuation of said vacuum motor; a disc-shaped butterfly valve plate having a generally planar configuration disposed in said bore and connected in fixed assembly to said operating rod to rotate therewith about the axis thereof between open and closed positions; the included angle between the axis of said bore and the plane of the valve plate in the closed position thereof being substantially less than 90*, and said valve plate being so constructed and arranged that the line of force due to fluid inlet pressure acting on said valve plate in the closed position thereof and extending in a direction normal to said valve plate is offset with respect to a line normal to said valve plate passing through the axis of rotation of said operating rod to provide a moment arm pending to rotate said valve plate further to the closed position thereof.
Claim 4
Dependent Claim
219 words
A vacuum actuated butterfly fluid flow valve comprising: a vacuum motor having a movable operating member mounted thereon; a valve body having a cylindrical bore wall forming a bore therethrough and a fluid inlet and a fluid outlet communicating with said bore; an operating rod rotatably mounted on said vaLve body and extending into the bore in a direction normal thereto; said operating member being operatively connected to said operating rod to rotate same upon actuation of said vacuum motor; a disc-shaped butterfly valve plate having a generally planar configuration disposed in said bore and connected in fixed assembly to said operating rod to rotate therewith about the axis thereof between open and closed positions; the included angle between the axis of said bore and the plane of the valve plate in the closed position thereof being substantially less than 90*, and said valve plate being so constructed and arranged that the line of force due to fluid inlet pressure acting on said valve plate in the closed position thereof and extending in a direction normal to said valve plate is offset with respect to a line normal to said valve plate passing through the axis of rotation of said operating rod to provide a moment arm pending to rotate said valve plate further to the closed position thereof.
Claim 5
Dependent Claim
144 words
A fluid flow valve comprising: a valve body having a bore wall forming a flow passageway; a butterfly valve member in said passageway; an operating rod mounted on said valve body for pivoting said valve member in said flow passageway; means forming aligned bores in said valve body at the opposite sides of said bore wall for receiving and journaling said operating rod; and said valve plate comprising a resilient member and a metal insert embedded in said resilient member, a portion of said metal insert being exposed to said operating rod for a weld connection therewith, the exposed portion of said metal insert being generally arcuately shaped but having a substantially flat portion extending transversely to the axis of said operating rod to receive said rod and to accommodate variations in the position of said rod due to misalignment of said journaling bores.
Claim 6
Dependent Claim
144 words
A fluid flow valve comprising: a valve body having a bore wall forming a flow passageway; a butterfly valve member in said passageway; an operating rod mounted on said valve body for pivoting said valve member in said flow passageway; means forming aligned bores in said valve body at the opposite sides of said bore wall for receiving and journaling said operating rod; and said valve plate comprising a resilient member and a metal insert embedded in said resilient member, a portion of said metal insert being exposed to said operating rod for a weld connection therewith, the exposed portion of said metal insert being generally arcuately shaped but having a substantially flat portion extending transversely to the axis of said operating rod to receive said rod and to accommodate variations in the position of said rod due to misalignment of said journaling bores.
Claim 7
Dependent Claim
168 words
A fluid flow valve comprising: means including a cylindrical bore wall forming a unidirectional fluid flow passageway; a disc-shaped butterfly valve member disposed crosswise in said passage; and means for pivoting said valve member in said passageway; said valve member being made of resilient material and having first and second parallel end walls respectively forming the upstream and downstream sides of said valve member and a circumferentially continuous peripheral wall interconnecting said end walls, said peripheral wall having a central portion which is straight in transverse cross section and which slopes away from said cylindrical bore wall in a downstream direction to provide a back rake, and an arcuately shaped transition wall portion which interconnects said central portion and said one of said end walls forming said upstream side of said valve member, said transition wall portion being adapted to engage said cylindrical bore wall in the closed position of said valve member to provide a circumferentially continuous sealing edge of the upstream side of said valve member.
Claim 8
Dependent Claim
168 words
A fluid flow valve comprising: means including a cylindrical bore wall forming a unidirectional fluid flow passageway; a disc-shaped butterfly valve member disposed crosswise in said passage; and means for pivoting said valve member in said passageway; said valve member being made of resilient material and having first and second parallel end walls respectively forming the upstream and downstream sides of said valve member and a circumferentially continuous peripheral wall interconnecting said end walls, said peripheral wall having a central portion which is straight in transverse cross section and which slopes away from said cylindrical bore wall in a downstream direction to provide a back rake, and an arcuately shaped transition wall portion which interconnects said central portion and said one of said end walls forming said upstream side of said valve member, said transition wall portion being adapted to engage said cylindrical bore wall in the closed position of said valve member to provide a circumferentially continuous sealing edge of the upstream side of said valve member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |