US3917170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mobile refractory gunning apparatus
Assignee: Quigley Co Inc
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Filing: 1974-07-19
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Granted: 1975-11-04
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Expires: 1994-07-19
Abstract
Abstract A pipe for gunning a slurry of refractory material and water is rotatably received within a tubular boom. The composition of the slurry is maintained uniform by a water control valve before a mixing tee. The boom is encased in insulation and cooled by a flow of compressed air through an internal annular space around the rotating gunning pipe. The boom is received within roller supports in a barrel framework to permit the longitudinal extension of the boom to be varied. The barrel rocks up and down in a bracket on a turntable which swivels upon a motorized carriage. The longitudinal movement of the boom relative to the barrel and rocking of the barrel and contained boom are actuated by hydraulic piston and cylinder assemblies.
Inventors
- 👤 Joseph J Marino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:55
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/16; F27D1/1636; F27D1/1642; B; B05; B05B; B05B15/00; B05B15/60; B05B15/68; C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/44; C21C5/441; C21C5/443
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
221 words
A mobile refractory gunning apparatus comprising a motorized carriage capable of movement over a substantially horizontal surface, a turntable, rotatable bearing means having a substantially vertical axis of rotation mounting the turntable on the carriage, an inclinable support barrel, a bracket on the turntable mounting the barrel to rock up and down on the turntable, the barrel having spaced longitudinal motionpermitting bearings, a tubular boom being mounted in the spaced longitudinal motion-permitting bearings in the barrel, longitudinal extension means reacting between the barrel and the boom whereby the longitudinal extension of the boom in front of the carriage is varied, a vertically-acting extension means reacting between the turntable and the barrel whereby the angle of inclination of the boom is varied, an elongated gunning pipe for carrying and directing a flow of fluid refractory material, pipe receiving bearings in the boom, the pipe being inserted in the pipe-receiving bearings and through the boom, an insulating casing incorporated within the outer periphery of the boom, whereby the pipe is shielded from refractory heat, a rotating drive reacting between the boom and the gunning pipe for rotating the gunning pipe about its longitudinal axis within the boom, and supply means for pressurized cooling fluid being connected to the boom for conducting a flow of cooling fluid through it and about the gunning pipe.
Claim 2
Dependent Claim
221 words
A mobile refractory gunning apparatus comprising a motorized carriage capable of movement over a substantially horizontal surface, a turntable, rotatable bearing means having a substantially vertical axis of rotation mounting the turntable on the carriage, an inclinable support barrel, a bracket on the turntable mounting the barrel to rock up and down on the turntable, the barrel having spaced longitudinal motionpermitting bearings, a tubular boom being mounted in the spaced longitudinal motion-permitting bearings in the barrel, longitudinal extension means reacting between the barrel and the boom whereby the longitudinal extension of the boom in front of the carriage is varied, a vertically-acting extension means reacting between the turntable and the barrel whereby the angle of inclination of the boom is varied, an elongated gunning pipe for carrying and directing a flow of fluid refractory material, pipe receiving bearings in the boom, the pipe being inserted in the pipe-receiving bearings and through the boom, an insulating casing incorporated within the outer periphery of the boom, whereby the pipe is shielded from refractory heat, a rotating drive reacting between the boom and the gunning pipe for rotating the gunning pipe about its longitudinal axis within the boom, and supply means for pressurized cooling fluid being connected to the boom for conducting a flow of cooling fluid through it and about the gunning pipe.
Claim 3
Dependent Claim
22 words
An apparatus as set forth in claim 1 wherein the carriage and turntable comprise a construction type crawler having a rotatable turntable.
Claim 4
Dependent Claim
24 words
An apparatus as set forth in claim 2 wherein the bracket comprises a pair of support posts having pivotal bearings at their upper ends.
Claim 5
Dependent Claim
38 words
An apparatus as set forth in claim 1 wherein the inclinable support barrel comprises a boom-surrounding framework having a boom-receiving array of rollers at each of its ends to comprise the longitudinal motion-permitting bearings which receive the boom.
Claim 6
Dependent Claim
24 words
An apparatus set forth in claim 4 wherein spring means is connected to each array of rollers for resiliently biasing them against the boom.
Claim 7
Dependent Claim
25 words
An apparatus as set forth in claim 1 wherein the longitudinal extension means and the vertically-acting extension means each comprise a piston and cylinder assembly.
Claim 8
Dependent Claim
32 words
An apparatus as set forth in claim 6 wherein the longitudinal extension piston and cylinder assembly includes a rearwardly extending rod and a rear collar which attaches the rod to the boom.
Claim 9
Dependent Claim
28 words
An apparatus as set forth in claim 6 wherein the vertically-acting piston and cylinder means reacts between the top of the turntable and the bottom of the barrel.
Claim 10
Dependent Claim
30 words
An apparatus as set forth in claim 1 wherein a swivel coupling is connected to the rear of the gunning pipe for connecting a source of pressurized fluid refractory thereto.
Claim 11
Dependent Claim
32 words
An apparatus as set forth in claim 1 wherein the turntable bracket and barrel are constructed and arranged to rock the barrel and retained boom upwardly approximately 15* and downwardly approximately 40*.
Claim 12
Dependent Claim
25 words
An apparatus as set forth in claim 1 wherein the source of pressurized cooling fluid comprises hose connections for coupling to a compressed air supply.
Claim 13
Dependent Claim
38 words
An apparatus as set forth in claim 1 wherein an angularly inclined nozzel is connected to the front of the gunning pipe for directing the spray of pressurized fluid refractory material at an angle to the gunning pipe.
Claim 14
Dependent Claim
37 words
An apparatus as set forth in claim 1 wherein electrical control means is connected to the carriage, the longitudinal and vertically-acting extension means and to the rotating drive whereby the operation of the apparatus is electrically controlled.
Claim 15
Dependent Claim
47 words
An apparatus as set forth in claim 7 wherein the boom is tubular, the barrel comprises a boom-surrounding framework, a boom-receiving array of rollers at each end of the framework, and spring means connected to each array of rollers for resiliently Biasing them against the tubular boom.
Claim 16
Dependent Claim
22 words
An apparatus as set forth in claim 1 wherein a rotating drive is reversible for rotating the gunning pipe in either direction.
Claim 17
Dependent Claim
33 words
An apparatus as set forth in claim 9 wherein the source of pressurized fluid refractory comprises a mixing tee, the mixing tee having a connection for dry refractory and a connection for water.
Claim 18
Dependent Claim
32 words
An apparatus as set forth in claim 16 wherein a water control valve is connected to the water connection of the mixing tee for maintaining substantially constant proportions of refractory and water.
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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) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |