US3685705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding gate valve having spring biased slide
Assignee: Individual
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Filing: 1971-03-24
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Granted: 1972-08-22
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Expires: 1991-03-24
Abstract
Abstract A sliding gate valve for a pouring ladle comprises a bottom plate, a gate assembly connected thereto and an extensible means to operate the gate. The gate assembly includes a stationary refractory plate and a slidable refractory plate having at least two aligned openings. The slide plate is held in a metal slide and tension is maintained in the system by means of adjustable tension plates cooperating with a mounting plate at one end and the metal slide at the other.
Inventors
- 👤 James W Cessna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:28
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/14; B22D41/22; B22D41/24
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
244 words
A sliding gate valve for attachment to a molten metal pouring ladle having an apertured pocket block through which the molten metal flows comprising a bottom plate connected to the ladle and surrounding the pocket block; a gate assembly including: A. a mounting plate connected to the bottom plate and having two spaced and parallel slots along the bottom surface thereof; B. a refractory apertured stationary plate connected to the mounting plate and adapted to engage and register with the apertured pocket block; C. a refractory slide plate having at least two aligned openings therethrough and in sliding engagement with the stationary plate, each opening aligned to register with the stationary plate aperture; D. a perforate metal slide having the slide plate mounted thereto and in registry therewith, said slide having two parallel recessed trackways extending along a bottom surface thereof, said trackways positioned on opposing sides of said aligned openings; E. parallel adjustable tension plates secured to the mounting plate and aligned with said metal slide, each tension plate having two parallel raised tracks at opposing ends thereof, one of said tracks cooperating with the metal slide recessed trackway and the other cooperating with the mounting plate slot; F. spring adjusting means cooperating with the tension plates to adjust the tension between the stationary plate and the slide plate, extensible means attached to the metal slide to position certain of the slide plate openings in registry with the aperture of the stationary plate.
Claim 2
Dependent Claim
244 words
A sliding gate valve for attachment to a molten metal pouring ladle having an apertured pocket block through which the molten metal flows comprising a bottom plate connected to the ladle and surrounding the pocket block; a gate assembly including: A. a mounting plate connected to the bottom plate and having two spaced and parallel slots along the bottom surface thereof; B. a refractory apertured stationary plate connected to the mounting plate and adapted to engage and register with the apertured pocket block; C. a refractory slide plate having at least two aligned openings therethrough and in sliding engagement with the stationary plate, each opening aligned to register with the stationary plate aperture; D. a perforate metal slide having the slide plate mounted thereto and in registry therewith, said slide having two parallel recessed trackways extending along a bottom surface thereof, said trackways positioned on opposing sides of said aligned openings; E. parallel adjustable tension plates secured to the mounting plate and aligned with said metal slide, each tension plate having two parallel raised tracks at opposing ends thereof, one of said tracks cooperating with the metal slide recessed trackway and the other cooperating with the mounting plate slot; F. spring adjusting means cooperating with the tension plates to adjust the tension between the stationary plate and the slide plate, extensible means attached to the metal slide to position certain of the slide plate openings in registry with the aperture of the stationary plate.
Claim 3
Dependent Claim
32 words
The sliding valve of claim 1 wherein the gate assembly includes a stationary plate retainer secured to the mounting plate to retain the stationary plate and the apertured pocket block in registry.
Claim 4
Dependent Claim
21 words
The sliding valve of claim 1 wherein the mounting plate has a recessed section in which said stationary plate is positioned.
Claim 5
Dependent Claim
49 words
The sliding valve of claim 1 wherein the spring adjusting means includes a bolt extending through an opening in the tension plate and threadably engaging the mounting plate, a nut and washer engaging the opposite end of the bolt and a spring positioned between the washer and tension plate.
Claim 6
Dependent Claim
30 words
The sliding valve of claim 1 wherein the extensible means are piston-cylinder means attached to the ladle bottom at one end and to the metal slide at the other end.
Claim 7
Dependent Claim
46 words
The sliding valve of claim 5 wherein two axially aligned piston-cylinder means are employed, said first piston-cylinder means positioning a particular slide plate opening for registry with the aperture of the stationary plate and the second piston-cylinder means opening and closing said particular slide plate opening.
Claim 8
Dependent Claim
200 words
In a molten metal pouring ladle having an apertured pocket block and a bottom plate therearound, the improvement comprising a gate assembly including a mounting plate adapted to connect to the bottom plate and with two spaced and parallel slots along the bottom surface thereof, a refractory apertured stationary plate connected to the mounting plate and adapted tO engage and register with the apertured pocket block, a refractory slide plate having at least two aligned openings therethrough and in sliding engagement with the stationary plate, each opening aligned to register with the stationary plate aperture, a perforate metal extensible slide having the slide plate mounted thereto and in registry therewith, said slide having two parallel recessed trackways extending along a bottom surface thereof, said trackways positioned on opposing sides of said aligned openings, parallel adjustable tension plates secured to the mounting plate and aligned with said metal slide, each tension plate having two parallel raised tracks at opposing ends thereof, one of said tracks cooperating with the metal slide recessed trackway and the other cooperating with the mounting plate slot, spring adjusting means cooperating with the tension plates to adjust the tension between the stationary plate and the slide plate.
Claim 9
Dependent Claim
200 words
In a molten metal pouring ladle having an apertured pocket block and a bottom plate therearound, the improvement comprising a gate assembly including a mounting plate adapted to connect to the bottom plate and with two spaced and parallel slots along the bottom surface thereof, a refractory apertured stationary plate connected to the mounting plate and adapted tO engage and register with the apertured pocket block, a refractory slide plate having at least two aligned openings therethrough and in sliding engagement with the stationary plate, each opening aligned to register with the stationary plate aperture, a perforate metal extensible slide having the slide plate mounted thereto and in registry therewith, said slide having two parallel recessed trackways extending along a bottom surface thereof, said trackways positioned on opposing sides of said aligned openings, parallel adjustable tension plates secured to the mounting plate and aligned with said metal slide, each tension plate having two parallel raised tracks at opposing ends thereof, one of said tracks cooperating with the metal slide recessed trackway and the other cooperating with the mounting plate slot, spring adjusting means cooperating with the tension plates to adjust the tension between the stationary plate and the slide plate.
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |