Patent US3847312A successfully refreshed from Google Patents.
US3847312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molten metal pouring valve having valve actuator extending through inclined channel
Assignee: British Iron and Steel Research Association BISRA
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Filing: 1973-04-12
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Granted: 1974-11-12
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Expires: 1993-04-12
Abstract
Abstract Apparatus for pouring molten metal from a receptacle (such as a ladle) comprises a refractory nozzle which is adapted to be mounted within the receptacle and which has a downwardly extending flow channel for removing molten metal from the receptacle, a refractory stopper head operable to close off the flow channel and a stopper rod which extends upwardly through the nozzle and is operable to move the head into and out of contact with a nozzle seat formed about the inlet to the flow channel. The channel is inclined to the vertical along at least a portion of its length so that the outlet orifice of the flow channel which is formed in the lower surface of the nozzle is set to one side of the stopper rod.
Inventors
- 👤 H Marr
- 👤 A Chester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:04
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/14
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
160 words
Apparatus for pouring molten metal from a receptacle comprising a refractory nozzle adapted to be mounted within the receptacle and having a downwardly extending flow channel for removing molten metal from the receptacle, an upstanding refractory sleeve member secured at its lower end within a bore formed in the refractory nozzle, a refractory stopper head operable to close off the flow channel, a stopper rod mounted within said upstanding refractory sleeve member and extending upwardly through the nozzle and operable to move the head into and out of contact with a nozzle seat formed about the inlet to the flow channel, and means to impart vertical movement to the stopper head relative to the refractory sleeve member, the channel being inclined to the vertical along at least a portion of its length so that the outlet orifice of the flow channel which is formed in the lower surface of the nozzle is set to one side of the stopper rod.
Claim 2
Dependent Claim
160 words
Apparatus for pouring molten metal from a receptacle comprising a refractory nozzle adapted to be mounted within the receptacle and having a downwardly extending flow channel for removing molten metal from the receptacle, an upstanding refractory sleeve member secured at its lower end within a bore formed in the refractory nozzle, a refractory stopper head operable to close off the flow channel, a stopper rod mounted within said upstanding refractory sleeve member and extending upwardly through the nozzle and operable to move the head into and out of contact with a nozzle seat formed about the inlet to the flow channel, and means to impart vertical movement to the stopper head relative to the refractory sleeve member, the channel being inclined to the vertical along at least a portion of its length so that the outlet orifice of the flow channel which is formed in the lower surface of the nozzle is set to one side of the stopper rod.
Claim 3
Dependent Claim
67 words
Apparatus according to claim 1 wherein the stopper head has formed in its under surface a bore into which extends the upper end of the refractory sleeve member, the respective dimensions of the bore and the sleeve member being such that their opposed surfaces co-operate to form a sliding joint, the length of which is greater than the permitted lift of the head from the nozzle seat.
Claim 4
Dependent Claim
44 words
Apparatus according to claim 2 wherein an annular gland is set in a groove formed in the bore of the refractory head and bears against the adjacent surface of the refractory sleeve member to provide a seal between the head and the sleeve member.
Claim 5
Dependent Claim
65 words
Apparatus according to claim 1 wherein the refractory nozzle is mounted within a metal container which is removablY secured to the receptacle, the upper portion of the nozzle extending upwardly through an aperture formed in the receptacle, and wherein the refractory sleeve member is secured within the bore formed in the refractory nozzle prior to the container being secured to the undersurface of the receptacle.
Claim 6
Dependent Claim
167 words
Apparatus for pouring molten metal from a receptacle comprising a refractory nozzle adapted to be mounted within the receptacle and having a downwardly extending flow channel for removing molten metal from the receptacle, a refractory sleeve member slidably mounted within an upwardly extending bore formed in the lower part of the refractory nozzle, a refractory stopper head operable to close off the flow channel, a stopper rod mounted within said refractory sleeve member and movable with the sleeve member and the stopper head relative to the nozzle to move the head into and out of contact with a nozzle seat formed about the inlet to the flow channel, and means to impart vertical movement to the stopper head relative to the refractory sleeve member, the channel being inclined to the vertical along at least a portion of its length so that the outlet orifice of the flow channel which is formed in the lower surface of the nozzle is set to one side of the stopper rod.
Claim 7
Dependent Claim
167 words
Apparatus for pouring molten metal from a receptacle comprising a refractory nozzle adapted to be mounted within the receptacle and having a downwardly extending flow channel for removing molten metal from the receptacle, a refractory sleeve member slidably mounted within an upwardly extending bore formed in the lower part of the refractory nozzle, a refractory stopper head operable to close off the flow channel, a stopper rod mounted within said refractory sleeve member and movable with the sleeve member and the stopper head relative to the nozzle to move the head into and out of contact with a nozzle seat formed about the inlet to the flow channel, and means to impart vertical movement to the stopper head relative to the refractory sleeve member, the channel being inclined to the vertical along at least a portion of its length so that the outlet orifice of the flow channel which is formed in the lower surface of the nozzle is set to one side of the stopper rod.
Claim 8
Dependent Claim
66 words
Apparatus according to claim 5 wherein the refractory nozzle is mounted within a metal container which is removably secured to the receptacle, the upper portion of the nozzle extending upwardly through an aperture formed in the receptacle, and wherein the refractory sleeve is mounted within the upwardly extending bore formed in the refractory nozzle prior to the container being secured to the undersurface of the receptacle.
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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |