US3854256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabrication of furnace linings with support frame
Assignee: Individual
•
Filing: 1974-01-07
•
Granted: 1974-12-17
•
Expires: 1994-01-07
Abstract
Abstract A unit including part of a refractory lining of a furnace, suitable for assembly off-site and transportation to its intended location. The unit includes a support frame from which a cluster of refractory blocks is suspended by vertical load bearing rods.
Inventors
- 👤 B Wilce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:01
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/16; F27D1/1621; F27D1/14; F27D1/145; F27D1/18; F27D1/1858; F27D2001/1875
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
237 words
A unit for use in the fabrication of furnaces, comprising in combination: a. a cluster of refractory blocks, said cluster comprising a lower row of blocks having a generally horizontal centre line and an upper row of blocks located above the lower row of blocks, each of at least some of the blocks in the lower row having therein at least one bore that extends through the block from the front to the back face of the block in a horizontal direction generally perpendicular to the centre line of the lower row of blocks, b. a support frame resting upon the upper row of blocks, c. a connecting element extending through each of said bores, each said element having a first portion, projecting beyond the front face and a second portion projecting beyond the back face of the block through which said bore passes, d. a pair of vertically extending load bearing members associated with each connecting element, one of said members being connected to said first portion and the other being connected to the second portion of the element, the upper ends of the members being secured to the support frame, e. wire ropes strung obliquely from the support frame to the points of connection of at least some of the load bearing members and connecting elements, the wire ropes being under sufficient tension to apply a force to hold the cluster of blocks together laterally.
Claim 2
Dependent Claim
237 words
A unit for use in the fabrication of furnaces, comprising in combination: a. a cluster of refractory blocks, said cluster comprising a lower row of blocks having a generally horizontal centre line and an upper row of blocks located above the lower row of blocks, each of at least some of the blocks in the lower row having therein at least one bore that extends through the block from the front to the back face of the block in a horizontal direction generally perpendicular to the centre line of the lower row of blocks, b. a support frame resting upon the upper row of blocks, c. a connecting element extending through each of said bores, each said element having a first portion, projecting beyond the front face and a second portion projecting beyond the back face of the block through which said bore passes, d. a pair of vertically extending load bearing members associated with each connecting element, one of said members being connected to said first portion and the other being connected to the second portion of the element, the upper ends of the members being secured to the support frame, e. wire ropes strung obliquely from the support frame to the points of connection of at least some of the load bearing members and connecting elements, the wire ropes being under sufficient tension to apply a force to hold the cluster of blocks together laterally.
Claim 3
Dependent Claim
59 words
A unit as claimed in claim 1, wherein the lifting members are constituted by rods having upper ends provided with screw threads, the support frame having openings therein through which the said upper ends of the rods pass, and nuts screwed onto the said upper ends of the rods so as to apply to the rods a predetermined tension.
Claim 4
Dependent Claim
51 words
A unit as claimed in claim 1, wherein each of said connecting members is in the form of a bolt which passes through a spacer member disposed in said bore, and the lifting members are in the form of rods having at their lower end eyes through which the bolt passes.
Claim 5
Dependent Claim
28 words
A unit as claimed in claim 3, wherein the bolts pass through plates adjacent the front faces of the blocks, to which plates the wire ropes are connected.
Claim 6
Dependent Claim
25 words
A unit as claimed in claim 1, wherein between the upper and lower rows of blocks there is at least one intermediate row of blocks.
Claim 7
Dependent Claim
27 words
A unit as claimed in claim 5, wherein the blocks are hexagonal blocks, every other one of which blocks in the lower row has a bore therethrough.
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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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |