US3815197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass lehr roll and method of manufacture
Assignee: Hudson Corp
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Filing: 1972-11-08
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Granted: 1974-06-11
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Expires: 1992-11-08
Abstract
Abstract A construction and method of manufacture for flat glass annealing lehr rolls having a metal body and a covering of insulating material made from glass, ceramic or metallic fibers. Among the glass and ceramic fibers are amorphous silica, amorphous graphite, ceramic fibers such as ''''Kaowool'''' or ''''Fiberfrax,'''' quartz or mineral wool, metallic fibers, fibermetal or porous metal might be carbon steel, stainless steel or other metals, or alloys such as nickel or bronze. The covering is a temperature-resistant material which is flexible and resilient at lehr temperatures and has a relatively low radial coefficient of thermal conductivity. The covering is relatively thin in most embodiments of the invention, and may be slipped on as a sleeve or applied and secured in other ways.
Inventors
- 👤 R Sukenik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:11
CPC Classifications
C; C03; C03B; C03B35/00; C03B35/14; C03B35/16; C03B35/18; C03B35/189; C03B35/181
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
15 words
The combination according to claim 1, said cover comprising a sleeve secured to said body.
Claim 2
Dependent Claim
19 words
The combination according to claim 1, said cover being secured to said body by a bonding cement or adhesive.
Claim 3
Dependent Claim
33 words
The combination according to claim 1, said cover being in the form of discrete islands of material, whereby damage to any one island may be repaired by removing and replacing that island only.
Claim 4
Dependent Claim
24 words
The combination according to claim 1, said cover being wool or a feltlike form and being secured to said body by a bonding cement.
Claim 5
Dependent Claim
14 words
The combination according to claim 5, said bonding cement being an elastomer type adhesive.
Claim 6
Dependent Claim
13 words
The combination according to claim 5, said bonding cement being a refractory cement.
Claim 7
Dependent Claim
40 words
The combination according to claim 1, said cover being wool and secured to said body by at least one bonding wire, and means tensioning said wire or wires whereby the wire will be recessed with respect to the cover surface.
Claim 8
Dependent Claim
24 words
The combination according to claim 8, said body being further provided with grooves for receiving said wire and the portions of the cover therebeneath.
Claim 9
Dependent Claim
34 words
The combination according to claim 1, said cover being wool and secured to said body by a helical spring secured under tension whereby the spring is recessed below the outer surface of the cover.
Claim 10
Dependent Claim
24 words
The combination according to claim 1, said cover comprising a sleeve of amorphous silica secured to said body at both ends by ring clamps.
Claim 11
Dependent Claim
15 words
The combination according to claim 1, said cover being formed as a spirally wound tape.
Claim 12
Dependent Claim
16 words
The combination according to claim 12, said tape being secured to said body by recessed screws.
Claim 13
Dependent Claim
19 words
The combination according to claim 1, said cover being fabricated of a plurality of strips in axially adjacent relation.
Claim 14
Dependent Claim
33 words
The combination according to claim 1, said cover comprising a sheet of material the edges of which enter an axial slot in said body, and a key trapping said edges in the slot.
Claim 15
Dependent Claim
14 words
A glass lehr roll comprising a cylindrical metal body and a covering of ''''fibermetal.''''
Claim 16
Dependent Claim
21 words
The combination according to claim 16, said fibermetal being provided in the form of axially adjacent segments wrapped around said body.
Claim 17
Dependent Claim
30 words
The combination according to claim 16, further provided with means securing said fibermetal to said body comprising recessed rivet-like members welded to said body and mushroomed into the adjacent fibermetal.
Claim 18
Independent Claim
61 words
A method of applyIng a fibermetal cover to a metal roll body comprising the steps of wrapping said fibermetal around said roll body and welding metal pellets to said body by the application of electric current in a manner such that the pellet material mushrooms into the adjacent portions of the fibermetal and is recessed with respect to the fibermetal surface.
Claim 19
Dependent Claim
24 words
The method according to claim 19, with the further step of forming recesses in said fibermetal into which said pellets are placed before welding.
Claim 20
Dependent Claim
36 words
The method according to claim 19, further provided with the steps of placing said fibermetal on the body in axially adjacent segments, with the joint for each segment being inclined with respect to the body axis.
Claim 21
Dependent Claim
57 words
A glass lehr roll comprising a cylindrical metal body and a covering composed of discrete islands of a high temperature fibrous type of material chosen from the class containing metallic wool, metallic cloth, glass cloth, ceramic fibers, ''''Kaowool,'''' ''''Fiberfrax,'''' amorphous graphite, quartz, mineral wool, metallic fibers, and amorphous silica, and means bonding said islands to said body.
Claim 22
Dependent Claim
12 words
The combination according to claim 22, said material having a woven structure.
Claim 23
Dependent Claim
20 words
The combination according to claim 22, said discrete islands being formed by slits in the cover after it is applied.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |