US3853204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for and methods of lining a furnace
Assignee: United States Steel Corp
•
Filing: 1972-05-15
•
Granted: 1974-12-10
•
Expires: 1992-05-15
Abstract
Abstract Apparatus for and methods of lining a furnace, provided with a bottom aperture in the furnace bottom, with an inner lining of a refractory material are disclosed.
Inventors
- 👤 J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:04
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/44; C21C5/441
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
275 words
Apparatus for lining a furnace, provided with a bottom aperture in its bottom, with an inner lining of a refractory material, said apparatus having: a. a support member secured to said furnace in registry with said bottom aperture for guiding said apparatus through said bottom aperture and provided with a tower aperture; b. a first tower adapted to pass through said tower aperture in said support member and provided with a refractory material aperture; c. tower elevating means on one of said support member and said first tower and connected to the other of said support member and said first tower and operable to raise said first tower through said tower aperture in said support member; d. a turntable rotatable on the top of said first tower and provided with a second refractory material aperture in registry with said refractory material aperture in said first tower; e. a work platform mounted on said turntable, provided with a third refractory material aperture and movable on said turntable from a storage position on said turntable, where said work platform passes through said tower aperture in said support member, to a work position where said work platform extends beyond said turntable to enable a workman to stand on said work platform; f. refractory material elevating means mounted on said work platform, engageable with said refractory material and operable to raise said refractory material through said refractory material aperture in said first tower, said second refractory material aperture in said turntable and said third refractory material aperture in said work platform into alignment with said work platform so that said refractory material can be transferred to said work platform.
Claim 2
Dependent Claim
275 words
Apparatus for lining a furnace, provided with a bottom aperture in its bottom, with an inner lining of a refractory material, said apparatus having: a. a support member secured to said furnace in registry with said bottom aperture for guiding said apparatus through said bottom aperture and provided with a tower aperture; b. a first tower adapted to pass through said tower aperture in said support member and provided with a refractory material aperture; c. tower elevating means on one of said support member and said first tower and connected to the other of said support member and said first tower and operable to raise said first tower through said tower aperture in said support member; d. a turntable rotatable on the top of said first tower and provided with a second refractory material aperture in registry with said refractory material aperture in said first tower; e. a work platform mounted on said turntable, provided with a third refractory material aperture and movable on said turntable from a storage position on said turntable, where said work platform passes through said tower aperture in said support member, to a work position where said work platform extends beyond said turntable to enable a workman to stand on said work platform; f. refractory material elevating means mounted on said work platform, engageable with said refractory material and operable to raise said refractory material through said refractory material aperture in said first tower, said second refractory material aperture in said turntable and said third refractory material aperture in said work platform into alignment with said work platform so that said refractory material can be transferred to said work platform.
Claim 3
Dependent Claim
29 words
The apparatus rEcited in claim 1 and having: a. guide means on said first tower to guide said refractory material through said refractory material aperture in said first tower.
Claim 4
Dependent Claim
18 words
The apparatus recited in claim 1 wherein: a. said tower elevating means is mounted on said support member.
Claim 5
Dependent Claim
18 words
The apparatus recited in claim 1 wherein: a. said tower elevating means is mounted on said first tower.
Claim 6
Dependent Claim
54 words
The apparatus recited in claim 1 and having: a. conveyor means on said work platform extending from said third refractory material aperture in said work platform to a work position on said work platform and for delivering said refractory material from said third refractory material aperture in said work platform to said work position.
Claim 7
Dependent Claim
52 words
The apparatus recited in claim 5 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 8
Dependent Claim
39 words
The apparatus recited in claim 6 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 9
Dependent Claim
26 words
The apparatus recited in claim 1 and having: a. connecting means on said tower elevating means for connecting said tower elevating means to said first tower.
Claim 10
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 11
Dependent Claim
25 words
The apparatus recited in claim 1 and having: a. a second work platform on the bottom of said first tower for receiving said refractory material.
Claim 12
Dependent Claim
36 words
The apparatus recited in claim 10 wherein: a. said refractory material elevating means is operable to convey a single predetermined amount of said refractory material from said second work platform into alignment with said work platform.
Claim 13
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 14
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 15
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 16
Dependent Claim
37 words
The apparatus recited in claim 1 and having: a. form means on said support member extending into said bottom aperture of said furnace for defining the end of said refractory material on the bottom of said furnace.
Claim 17
Dependent Claim
47 words
The apparatus recited in claim 8 and having: a. tower locking means disposable between said support member and said first tower to lock said first tower to said support member to permit the removal of said connecting means on said tower elevating means from said first tower.
Claim 18
Dependent Claim
68 words
The apparatus recited in claim 16 and having: a. a second tower provided with another refractory material aperture; b. said second tower being connected to the bottom of said first tower so that said refractory material aperture in said first tower registers with said other refractory material aperture in said second tower; and c. said connecting means on said tower elevating means being connected to said second tower.
Claim 19
Dependent Claim
20 words
The apparatus recited in claim 1 and having: a. another work platform mounted on said turntable adjacent said work platform.
Claim 20
Dependent Claim
35 words
The apparatus recited in claim 18 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 21
Dependent Claim
37 words
The apparatus recited in claim 1 and having: a. a second work platform elevating means on said furnace and connectable to said work platform for moving said work platform between said storage position and said work position.
Claim 22
Dependent Claim
39 words
The apparatus recited in claim 10 and having: a. auxiliary elevating means on said second work platform for elevating said refractory material above said second work platform to eliminate bending of said workman to pick up said refractory material.
Claim 23
Dependent Claim
54 words
The apparatus recited in claim 11 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 first tower is raised by said tower elevating means.
Claim 24
Dependent Claim
30 words
The apparatus recited in claim 14 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 14 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 to said work platform.
Claim 27
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 28
Dependent Claim
33 words
The apparatus recited in claim 1 and having: a. guide means on said support means to guide said work platform, said turntable and said first tower through said bottom aperture in said furnace.
References Cited (Backward Citations)
US3033389A
Cited
US3058543A
Cited
US3168163A
Cited
US3298154A
Cited
US3256956A
Cited
US3259208A
Cited
US3287875A
Cited
US3285390A
Cited
US3241634A
Cited
US3439794A
Cited
US3517771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |