US3955685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for lining a furnace
Assignee: United States Steel Corp
•
Filing: 1974-02-15
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Granted: 1976-05-11
•
Expires: 1994-02-15
Abstract
Abstract Apparatus as described for lining the interior of a metallurgical furnace, especially one having openings at both the bottom and the top of the vessel, with refractory brick. A tower structure is extensible into the furnace interior and carries a work platform that is positionable to various elevations within the furnace.
Inventors
- 👤 Joe H. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:49
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/44; C21C5/441
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
208 words
Apparatus for lining a furnace, provided with a bottom aperture in its bottom and a top aperture in its top, with an inner lining of a refractory material, said apparatus having: a. a table support member secured to said furnace adjacent said top aperture in said furnace; b. a turntable rotatable on said table support member and provided with work platform elevating means clearance apertures; c. a work platform movable through said bottom aperture in said furnace while in a storage position and then further movable from said storage position to a work position to enable a workman to stand on said work platform 1. said work platform being provided with a refractory material aperture; d. work platform elevating means extending through said table support member, and operatively connected between said turntable and said work platform for moving said work platform through said bottom aperture in said furnace to a desired work position within said furnace; e. refractory material elevating means on said turntable extending through said table support member, and connectable to said refractory material for moving said refractory material through said refractory material aperture in said work platform so that said refractory material can be transferred from said refractory material elevating means to said work platform.
Claim 2
Dependent Claim
208 words
Apparatus for lining a furnace, provided with a bottom aperture in its bottom and a top aperture in its top, with an inner lining of a refractory material, said apparatus having: a. a table support member secured to said furnace adjacent said top aperture in said furnace; b. a turntable rotatable on said table support member and provided with work platform elevating means clearance apertures; c. a work platform movable through said bottom aperture in said furnace while in a storage position and then further movable from said storage position to a work position to enable a workman to stand on said work platform 1. said work platform being provided with a refractory material aperture; d. work platform elevating means extending through said table support member, and operatively connected between said turntable and said work platform for moving said work platform through said bottom aperture in said furnace to a desired work position within said furnace; e. refractory material elevating means on said turntable extending through said table support member, and connectable to said refractory material for moving said refractory material through said refractory material aperture in said work platform so that said refractory material can be transferred from said refractory material elevating means to said work platform.
Claim 3
Dependent Claim
35 words
The apparatus recited in claim 1 and having: a. platform guide means operatively positioned between said inner lining and said work table for effecting guided relative movement between said inner lining and said work table.
Claim 4
Dependent Claim
40 words
The apparatus recited in claim 1 wherein: a. said work platform has an outer portion and an inner portion, said outer portion being extendable with respect to said inner portion to provide a variable predetermined length to said work platform.
Claim 5
Dependent Claim
36 words
The apparatus recited in claim 3 and having: a. work platform locking means connected to said outer portion and said inner portion to secure said outer portion and said inner portion together with said predetermined length.
Claim 6
Dependent Claim
31 words
The apparatus recited in claim 1 and having: a. leveling means associated with said furnace and said table support member for leveling said table support member with respect to said furnace.
Claim 7
Dependent Claim
29 words
The apparatus recited in claim 1 and having: a. guide means on said work platform to guide said refractory material through said refractory material aperture in said work platform.
Claim 8
Dependent Claim
20 words
The apparatus recited in claim 1 wherein: a. said work platform elevating means is mounted on said table support member.
Claim 9
Dependent Claim
19 words
The apparatus recited in claim 1 wherein: a. said work platform elevating means is mounted on said work platform.
Claim 10
Dependent Claim
56 words
The apparatus recited in claim 1 and having: a. conveyor means on said work platform extending from said refractory material aperture in said work platform to a work position on said work platform and for delivering said refractory material from said refractory material aperture in said work platform to said work position on said work platform.
Claim 11
Dependent Claim
52 words
The apparatus recited in claim 9 and having: a. said refractory material carried by a pallet; and b. a conveyor section on said pallet, which conveyor section is alignable with said conveyor means to permit the transfer of said pallet and said refractory material from said conveyor section to said conveyor means.
Claim 12
Dependent Claim
39 words
The apparatus recited in claim 10 and having: a. locking means on one member of said conveyor section and said conveyor means for locking the other member of said conveyor section and said conveyor means to said one member.
Claim 13
Dependent Claim
28 words
The apparatus recited in claim 1 and having: a. connecting means on said work platform elevating means for connecting said work platform elevating means to said work platform.
Claim 14
Dependent Claim
37 words
The apparatus recited in claim 1 and having: a. auxiliary elevating means on said work platform for elevating said refractory material above said work platform to eliminate bending of said workman to pick up said refractory material.
Claim 15
Dependent Claim
31 words
The apparatus recited in claim 1 and having: a. said refractory material elevating means operable to convey a single predetermined amount of said refractory material into alignment with said work platform.
Claim 16
Dependent Claim
31 words
The apparatus recited in claim 1 and having: a. kick-off means mounted on said work platform for removing said refractory material from said refractory material elevating means onto said work platform.
Claim 17
Dependent Claim
34 words
The apparatus recited in claim 1 and having: a. material guide means on said work platform for guiding said refractory material, when said refractory material is adjacent said work platform, onto said work platform.
Claim 18
Dependent Claim
46 words
The apparatus recited in claim 1 and having: a. material feeding means on said work platform movable with respect to said work platform and for feeding said refractory material, when said refractory material is adjacent said work platform, to a predetermined position on said work platform.
Claim 19
Dependent Claim
32 words
The apparatus recited in claim 1 and having: a. form means adjacent said bottom aperture of said furnace for defining the end of said refractory material on the bottom of said furnace.
Claim 20
Dependent Claim
17 words
The apparatus recited in claim 1 and having: a. another work platform mounted adjacent said work platform.
Claim 21
Dependent Claim
35 words
The apparatus recited in claim 19 and having: a. a platform section disposed between said work platform and said other work platform to bridge the space between said work platform and said other work platform.
Claim 22
Dependent Claim
39 words
The apparatus recited in claim 1 and having: a. work platform support means bridging said bottom aperture in said furnace for supporting said work platform during movement of said work platform between said storage position and said work position.
Claim 23
Dependent Claim
55 words
The apparatus recited in claim 14 and having: a. a second material feeding means connected at one end to the bottom of said refractory material elevating means and adapted to feed said refractory material to the bottom of said refractory material elevating means as said work platform is raised by said work platform elevating means.
Claim 24
Dependent Claim
30 words
The apparatus recited in claim 17 and having: a. a brick mason stand depending from said work platform to eliminate bending of said workman to pick up said refractory material.
Claim 25
Dependent Claim
23 words
The apparatus recited in claim 1 wherein: a. said turntable is a thrust bearing which takes thrust in a vertical and horizontal direction.
Claim 26
Dependent Claim
49 words
The apparatus recited in claim 17 and having: a. wiping means on said work platform extending into the rotary path of movement of said refractory material on said material feeding means to engage and cause said refractory material to transfer from said material feeding means onto said work platform.
Claim 27
Dependent Claim
62 words
The apparatus recited in claim 1 and having: a. said table support member provided with a tower aperture; b. said turntable provided with a second tower aperture; c. a tower adapted to pass through said tower aperture in said table support member and said second tower aperture in said turntable, provided with a second refractory material aperture and secured to said turntable.
Claim 28
Dependent Claim
16 words
The apparatus recited in claim 26 and having: a. said work platform slidable on said tower.
Claim 29
Dependent Claim
28 words
The apparatus recited in claim 26 and having: a. guide means on said tower to guide said refractory material through said second refractory material aperture in said tower.
Claim 30
Dependent Claim
18 words
The apparatus recited in claim 26 wherein: a. said work platform elevating means is mounted on said tower.
Claim 31
Dependent Claim
19 words
The apparatus recited in claim 26 wherein: a. said work platform elevating means is mounted on said work platform.
Claim 32
Dependent Claim
27 words
The apparatus recited in claim 1 and having: a. connecting means on said work platform elevating means for connecting said work platform elevating means to said tower.
Claim 33
Dependent Claim
24 words
The apparatus recited in claim 26 and having: a. a second work platform on the bottom of said tower for receiving said refractory material.
Claim 34
Dependent Claim
51 words
The apparatus recited in claim 26 and having: a. a second tower provided with another refractory material aperture; and b. said second tower being connected to the bottom of said tower so that said refractory material aperture in said tower registers with said other refractory material aperture in said second tower.
Claim 35
Dependent Claim
22 words
The apparatus recited in claim 33 and having: a. said tower and said second tower being telescopic with respect to each other.
Claim 36
Dependent Claim
25 words
The apparatus recited in claim 1 and having: a. leveling means between said furnace and said table support member for leveling said table support member.
References Cited (Backward Citations)
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Cited
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Cited
US3241634A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |