US5205398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating roll cover
Assignee: Global Consulting Inc
•
Filing: 1991-06-27
•
Granted: 1993-04-27
•
Expires: 2011-06-27
Abstract
Abstract An insulating roller cover is now disclosed that provides a highly desirable combination of features. The cover is free from asbestos and is therefore of more desirable construction for handling and use. For the roller cover, at least substantially ceramic fiber is highly compressed, providing a dense and refractory, elevated temperature resistant insulating cover. The cover may itself serve as a load bearing surface; or may provide a foundation or protective media for annular discs or sleeve members made of various, load bearing materials. These load bearing materials may be unable to resist direct contact with the shaft due to thermal shock or the differences in their respective expansion and contraction rates. Where impregnant is utilized with the highly compressed fiber, such will often comprise a colloidal substituent.
Inventors
- 👤 Charles M. Hart
- 👤 James D. Rogers
- 👤 Harry L. King
- 👤 John J. Bartholomew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:14
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/71; C04B35/78; C04B35/80; F; F16; F16C; F16C13/00; B; B65; B65G; B65G39/00; B65G39/02; B65G39/07; C03; C03B; C03B35/00; C03B35/14; C03B35/16; C03B35/18; C03B35/181; C03B35/183; C03B35/184; C03B35/185; C03B35/186; C03B35/189; C04B35/01; C04B35/10; C04B35/111; C04B35/117; C04B35/14; C04B35/48; C04B35/486; C04B35/488; C04B35/82; F27; F27D; F27D1/00; F27D1/0003; F27D1/0006; F27D1/0009; F27D3/00; F27D3/02; F27D3/026; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/48; C04B2235/483; C04B2235/50; C04B2235/52; C04B2235/5208; C04B2235/5216; C04B2235/522; C04B2235/5228; C04B2235/526; Y; Y10; Y10T; Y10T428/00; Y10T428/21
Claims Analysis
Total Claims: 76
Claim 1
Independent Claim
116 words
A roller especially adapted for use in roller conveying articles, which articles are at substantially elevated temperature, or which articles are being conveyed through a zone of substantially elevated temperature, which roller comprises an inner shaft having at least one dense and refractory, elevated temperature resistant annular insulating cover member of highly compressed at least substantially ceramic fiber, including fibers of different lengths, with there being some fibers having lengths of at least about 2 inches, said fibers being compressed in an amount within the range of from about 50 percent to about 80 percent to a fiber density, basis dry fiber, within the range of from about 16 to about 50 pounds per cubic foot.
Claim 2
Dependent Claim
116 words
A roller especially adapted for use in roller conveying articles, which articles are at substantially elevated temperature, or which articles are being conveyed through a zone of substantially elevated temperature, which roller comprises an inner shaft having at least one dense and refractory, elevated temperature resistant annular insulating cover member of highly compressed at least substantially ceramic fiber, including fibers of different lengths, with there being some fibers having lengths of at least about 2 inches, said fibers being compressed in an amount within the range of from about 50 percent to about 80 percent to a fiber density, basis dry fiber, within the range of from about 16 to about 50 pounds per cubic foot.
Claim 3
Dependent Claim
24 words
The roller of claim 1, wherein said fiber is a ceramic fiber of silica with one or more of alumina, zirconia, chromia, or titania.
Claim 4
Dependent Claim
20 words
The roller of claim 1, wherein said cover member has a smooth, and compressed, outer diameter weight bearing fiber surface.
Claim 5
Dependent Claim
50 words
The roller of claim 1, wherein said fibers of different lengths include short fibers having lengths within the range of from about 2 inches to about 4 inches, together with long fibers, including fibers having a length within the range of from about 8 inches up to about 10 inches.
Claim 6
Dependent Claim
51 words
The roller of claim 1, wherein said annular cover member is compressed dry fiber compressed in an amount within the range of from about 55 percent to about 65 percent and said cover has a fiber density within the range of from about 18 to about 25 pounds per cubic foot.
Claim 7
Dependent Claim
50 words
The roller of claim 1, wherein said annular cover member is compressed wet fiber compressed in an amount of from greater than 60 percent up to about 80 percent and has a density, basis dry fiber, within the range of from about 20 to about 40 pounds per cubic foot.
Claim 8
Dependent Claim
17 words
The roller of claim 6, wherein said annular cover member is compressed fiber comprising fiber plus rigidizer.
Claim 9
Dependent Claim
26 words
The roller of claim 7, wherein said annular cover member comprises compressed fiber plus one or more of colloidal silica, colloidal alumina, colloidal zirconia or silane.
Claim 10
Dependent Claim
17 words
The roller of claim 1, wherein said annular cover member is compressed fiber comprising fiber plus binder.
Claim 11
Dependent Claim
26 words
The roller of claim 9, wherein said cover member comprises fiber plus one or more of cement, starch, clay, calcium aluminate, latex materials or cellulosic substituents.
Claim 12
Dependent Claim
129 words
A roller especially adapted for use in roller conveying articles, which articles are at substantially elevated temperature, or which articles are being conveyed through a zone of substantially elevated temperature, which roller comprises an inner shaft having at least one dense and refractory, elevated temperature resistant annular cover member of highly axially compressed at least substantially ceramic fiber, said fiber being compressed in an amount within the range of from about 50 percent to about 80 percent, to a fiber density, basis dry fiber, within the range of from about 16 to about 50 pounds per cubic foot, said annular cover member being axially compressed on said inner shaft, said compressed cover providing a smooth and compressed, outer weight bearing roller fiber surface for contact with roller conveyed articles.
Claim 13
Dependent Claim
129 words
A roller especially adapted for use in roller conveying articles, which articles are at substantially elevated temperature, or which articles are being conveyed through a zone of substantially elevated temperature, which roller comprises an inner shaft having at least one dense and refractory, elevated temperature resistant annular cover member of highly axially compressed at least substantially ceramic fiber, said fiber being compressed in an amount within the range of from about 50 percent to about 80 percent, to a fiber density, basis dry fiber, within the range of from about 16 to about 50 pounds per cubic foot, said annular cover member being axially compressed on said inner shaft, said compressed cover providing a smooth and compressed, outer weight bearing roller fiber surface for contact with roller conveyed articles.
Claim 14
Dependent Claim
17 words
The roller of claim 11, wherein said inner shaft includes a tubular member adapted for internal cooling.
Claim 15
Dependent Claim
23 words
The roller of claim 11, wherein said inner shaft is a metal shaft and said metal shaft is comprised of iron or steel.
Claim 16
Dependent Claim
36 words
The roller of claim 11, wherein said ceramic fiber consists of a major amount of silica-containing ceramic fiber with a minor amount comprising one or more of fiberglass, alumina fiber, fibrous boron compounds or mineral wool.
Claim 17
Dependent Claim
46 words
The roller of claim 14, wherein said ceramic fiber comprises silica with one or more of alumina, zirconia, chromia, or titania and said fiber is compressed to a density, basis dry fiber, within the range of from about 18 to about 40 pounds per cubic foot.
Claim 18
Dependent Claim
66 words
The roller of claim 11, wherein said highly compressed fiber is a ceramic fiber mixture of fibers having length of at least about 0.5 inch and including individual fibers of short fiber lengths within the range of from about 2 inches to about 4 inches, with individual fibers of long fiber lengths including fibers within the range of from about 8 inches to about 10 inches.
Claim 19
Dependent Claim
18 words
The roller of claim 11, wherein said annular cover member is compressed fiber comprising ceramic fiber plus rigidizer.
Claim 20
Dependent Claim
26 words
The roller of claim 17, wherein said annular cover member comprises compressed fiber plus one or more of colloidal silica, colloidal alumina, colloidal zirconia or silane.
Claim 21
Dependent Claim
18 words
The roller of claim 11, wherein said annular cover member is compressed fiber comprising ceramic fiber plus binder.
Claim 22
Dependent Claim
26 words
The roller of claim 19, wherein said cover member comprises fiber plus one or more of cement, starch, clay, calcium aluminate, latex materials or cellulosic substituents.
Claim 23
Dependent Claim
24 words
The roller of claim 11, wherein said roller comprises at least one load bearing annular tire member axially pressed in place by said fiber.
Claim 24
Dependent Claim
26 words
The roller of claim 21, wherein said tire member is one or more of a ceramic or metal or fiber board annular load bearing tire member.
Claim 25
Dependent Claim
30 words
The roller of claim 11, wherein said roller comprises a groove machined in said fiber and said groove has at least one load bearing castable member cast in said groove.
Claim 26
Dependent Claim
23 words
The roller of claim 21, wherein said roller comprises at least one annular flexible spacer member axially pressed in place by said fiber.
Claim 27
Dependent Claim
20 words
The roller of claim 21, wherein said flexible spacer member is one or more of metal foil or bulk fiber.
Claim 28
Dependent Claim
23 words
The roller of claim 11, wherein said highly compressed fiber is at least substantially enveloped in a load bearing, refractory annular sleeve member.
Claim 29
Dependent Claim
24 words
The roller of claim 26, wherein said highly compressed fiber is at least substantially enveloped by a load bearing sleeve of refractory castable material.
Claim 30
Dependent Claim
18 words
The roller of claim 27, wherein said castable material is a hardcoat comprising milled fiber plus colloidal rigidizer.
Claim 31
Dependent Claim
101 words
In glass conveying apparatus wherein sheet glass at elevated temperature is conveyed across roller conveyors, the improvement comprising roller conveyors having an inner shaft and at least one dense and refractory, elevated temperature resistant insulating cover member of highly-compressed at least substantially ceramic fiber, including fibers of different lengths, with there being some fibers having lengths of at least about 2 inches, said fiber being compressed in an amount within the range of from about 50 to about 80 percent to a fiber density, basis dry fiber, within the range of from about 16 to about 50 pounds per cubic foot.
Claim 32
Dependent Claim
101 words
In glass conveying apparatus wherein sheet glass at elevated temperature is conveyed across roller conveyors, the improvement comprising roller conveyors having an inner shaft and at least one dense and refractory, elevated temperature resistant insulating cover member of highly-compressed at least substantially ceramic fiber, including fibers of different lengths, with there being some fibers having lengths of at least about 2 inches, said fiber being compressed in an amount within the range of from about 50 to about 80 percent to a fiber density, basis dry fiber, within the range of from about 16 to about 50 pounds per cubic foot.
Claim 33
Dependent Claim
80 words
A roller especially adapted for use in roller conveying articles, which articles are at substantially elevated temperature, or which articles are being conveyed through a zone of substantially elevated temperature, which roller comprises: (a) an inner shaft; (b) at least one dense and refractory, elevated temperature resistant annular insulating cover member of highly compressed at least substantially ceramic fiber; and (c) an outer layer on said insulating cover member, said outer layer comprising milled ceramic fiber plus chopped ceramic fiber.
Claim 34
Dependent Claim
80 words
A roller especially adapted for use in roller conveying articles, which articles are at substantially elevated temperature, or which articles are being conveyed through a zone of substantially elevated temperature, which roller comprises: (a) an inner shaft; (b) at least one dense and refractory, elevated temperature resistant annular insulating cover member of highly compressed at least substantially ceramic fiber; and (c) an outer layer on said insulating cover member, said outer layer comprising milled ceramic fiber plus chopped ceramic fiber.
Claim 35
Dependent Claim
24 words
The roller of claim 30, wherein said fiber is a ceramic fiber of silica with one or more of alumina, zirconia, chromia, or titania.
Claim 36
Dependent Claim
68 words
The roller of claim 30, wherein said ceramic fiber of said annular cover member is a bulk fiber having fibers of different lengths and said fibers of different lengths include short fibers having lengths within the range of from about 2 inches to about 4 inches, together with long fibers, including fibers having a length within the range of from about 8 inches up to about 10 inches.
Claim 37
Dependent Claim
50 words
The roller of claim 30, wherein said fibers of said cover member are compressed in an amount within the range of from about 50 percent to about 80 percent to a fiber density, basis dry fiber, within the range of from about 16 to about 50 pounds per cubic foot.
Claim 38
Dependent Claim
17 words
The roller of claim 30, wherein said annular cover member is compressed fiber comprising fiber plus rigidizer.
Claim 39
Dependent Claim
26 words
The roller of claim 34, wherein said annular cover member comprises compressed fiber plus one or more of colloidal silica, colloidal alumina, colloidal zirconia or silane.
Claim 40
Dependent Claim
17 words
The roller of claim 30, wherein said annular cover member is compressed fiber comprising fiber plus binder.
Claim 41
Dependent Claim
26 words
The roller of claim 36, wherein said cover member comprises fiber plus one or more of cement, starch, clay, calcium aluminate, latex materials or cellulosic substituents.
Claim 42
Dependent Claim
16 words
The roller of claim 30, wherein said outer layer provides a smooth, outer weight bearing surface.
Claim 43
Dependent Claim
27 words
The roller of claim 30, wherein said outer layer comprises a major weight amount of milled ceramic fiber and a minor weight amount of chopped ceramic fiber.
Claim 44
Dependent Claim
41 words
The roller of claim 39, wherein said milled ceramic fiber is present in an amount from about 75 to about 95 weight percent, and said chopped ceramic fiber is present in an amount from about 5 to about 25 weight percent.
Claim 45
Dependent Claim
26 words
The roller of claim 39, wherein said outer layer contains the residue from colloidal rigidizer together with said milled ceramic fiber and said chopped ceramic fiber.
Claim 46
Dependent Claim
24 words
The roller of claim 41, wherein said outer layer comprises the residue from one or more of colloidal silica, colloidal alumina, or colloidal zirconia.
Claim 47
Dependent Claim
124 words
In a conveying apparatus wherein sheet articles at elevated temperature are conveyed across roller conveyors, the improvement comprising roller conveyors having an inner shaft and at least one dense and refractory, elevated temperature resistant insulating cover member having an inner layer comprising highly-compressed at least substantially ceramic fiber, and an outer shot containment layer as a covering for said inner ceramic fiber layer, wherein said ceramic fiber includes fibers of different lengths, with there being some fibers having lengths of at least about 2 inches, said fiber being compressed in an amount within the range of from about 50 to about 80 percent to a fiber density, basis dry fiber, within the range of from about 16 to about 50 pounds per cubic foot.
Claim 48
Dependent Claim
124 words
In a conveying apparatus wherein sheet articles at elevated temperature are conveyed across roller conveyors, the improvement comprising roller conveyors having an inner shaft and at least one dense and refractory, elevated temperature resistant insulating cover member having an inner layer comprising highly-compressed at least substantially ceramic fiber, and an outer shot containment layer as a covering for said inner ceramic fiber layer, wherein said ceramic fiber includes fibers of different lengths, with there being some fibers having lengths of at least about 2 inches, said fiber being compressed in an amount within the range of from about 50 to about 80 percent to a fiber density, basis dry fiber, within the range of from about 16 to about 50 pounds per cubic foot.
Claim 49
Dependent Claim
133 words
A roller especially adapted for use in roller conveying articles which are at substantially elevated temperatures, or are being conveyed through a zone of substantially elevated temperature, which roller comprises: (a) an inner shaft; (b) a roller core member surrounding said inner shaft and comprising ceramic fiber; (c) an inner, fixed end constraint member in fixed position abutting against an end of said roller core member; (d) a roller cover member comprising ceramic fiber and covering said roller core member wherein said roller cover member is axially compressed in an amount within the range of from about 50 percent to about 80 percent; and (e) an outer, adjustable end constraint member in adjustable position, surrounding said inner end constraint member in fixed position and abutting against an end of said roller cover member.
Claim 50
Dependent Claim
133 words
A roller especially adapted for use in roller conveying articles which are at substantially elevated temperatures, or are being conveyed through a zone of substantially elevated temperature, which roller comprises: (a) an inner shaft; (b) a roller core member surrounding said inner shaft and comprising ceramic fiber; (c) an inner, fixed end constraint member in fixed position abutting against an end of said roller core member; (d) a roller cover member comprising ceramic fiber and covering said roller core member wherein said roller cover member is axially compressed in an amount within the range of from about 50 percent to about 80 percent; and (e) an outer, adjustable end constraint member in adjustable position, surrounding said inner end constraint member in fixed position and abutting against an end of said roller cover member.
Claim 51
Dependent Claim
24 words
The roller of claim 44, wherein said inner, fixed end constraint member abuts against an end of said roller core member in axial compression.
Claim 52
Dependent Claim
24 words
The roller of claim 44, wherein said outer, adjustable end constraint member abuts against an end of said roller cover member in axial compression.
Claim 53
Dependent Claim
40 words
The roller of claim 44, wherein said inner, fixed end constraint member comprises a metal stud member having an outer threaded surface and said outer, adjustable end constraint member comprises a metal nut member threaded onto said metal stud member.
Claim 54
Dependent Claim
103 words
A roller especially adapted for use in roller conveying articles, which articles are at substantially elevated temperature, or which articles are being conveyed through a zone of substantially elevated temperature, which roller comprises an inner shaft having at least one dense and refractory, elevated temperature resistant annular insulating cover member of highly compressed at least substantially ceramic fiber, including fibers of different lengths, with there being some fibers having lengths of at least about 2 inches, said fibers being compressed in an amount above about 50 percent to a fiber density, basis dry fiber, of at least about 16 pounds per cubic foot.
Claim 55
Dependent Claim
103 words
A roller especially adapted for use in roller conveying articles, which articles are at substantially elevated temperature, or which articles are being conveyed through a zone of substantially elevated temperature, which roller comprises an inner shaft having at least one dense and refractory, elevated temperature resistant annular insulating cover member of highly compressed at least substantially ceramic fiber, including fibers of different lengths, with there being some fibers having lengths of at least about 2 inches, said fibers being compressed in an amount above about 50 percent to a fiber density, basis dry fiber, of at least about 16 pounds per cubic foot.
Claim 56
Dependent Claim
20 words
The roller of claim 48, wherein said annular cover member has fibers compressed in an amount up to 85 percent.
Claim 57
Dependent Claim
20 words
The roller of claim 48, wherein said annular cover member has fibers compressed in an amount above about 55 percent.
Claim 58
Dependent Claim
20 words
The roller of claim 48, wherein said annular cover member has fibers compressed in an amount above about 60 percent.
Claim 59
Dependent Claim
26 words
The roller of claim 48, wherein said annular cover member is compressed to a fiber density, basis dry fiber, above about 20 pounds per cubic foot.
Claim 60
Dependent Claim
26 words
The roller of claim 48, wherein said annular cover member is compressed to a fiber density, basis dry fiber, above about 22 pounds per cubic foot.
Claim 61
Dependent Claim
120 words
A roller especially adapted for use in roller conveying articles, which articles are at substantially elevated temperature, or which articles are being conveyed through a zone of substantially elevated temperature, which roller comprises an inner shaft having at least one dense and refractory, elevated temperature resistant annular cover member of highly axially compressed at least substantially ceramic fiber, wherein said annular cover member fiber is compressed in an amount above about 50 percent to a fiber density, basis dry fiber, of at least about 16 pounds per cubic foot, said annular cover member being axially compressed on said inner shaft, said compressed cover providing a smooth and compressed, outer weight bearing roller fiber surface for contact with roller conveyed articles.
Claim 62
Dependent Claim
120 words
A roller especially adapted for use in roller conveying articles, which articles are at substantially elevated temperature, or which articles are being conveyed through a zone of substantially elevated temperature, which roller comprises an inner shaft having at least one dense and refractory, elevated temperature resistant annular cover member of highly axially compressed at least substantially ceramic fiber, wherein said annular cover member fiber is compressed in an amount above about 50 percent to a fiber density, basis dry fiber, of at least about 16 pounds per cubic foot, said annular cover member being axially compressed on said inner shaft, said compressed cover providing a smooth and compressed, outer weight bearing roller fiber surface for contact with roller conveyed articles.
Claim 63
Dependent Claim
20 words
The roller of claim 54, wherein said annular cover member has fibers compressed in an amount up to 85 percent.
Claim 64
Dependent Claim
20 words
The roller of claim 54, wherein said annular cover member has fibers compressed in an amount above about 55 percent.
Claim 65
Dependent Claim
20 words
The roller of claim 54, wherein said annular cover member has fibers compressed in an amount above about 60 percent.
Claim 66
Dependent Claim
26 words
The roller of claim 54, wherein said annular cover member is compressed to a fiber density, basis dry fiber, above about 20 pounds per cubic foot.
Claim 67
Dependent Claim
26 words
The roller of claim 54, wherein said annular cover member is compressed to a fiber density, basis dry fiber, above about 22 pounds per cubic foot.
Claim 68
Dependent Claim
71 words
In glass conveying apparatus wherein sheet glass at elevated temperature is conveyed across roller conveyors, the improvement comprising roller conveyors having an inner shaft and at least one dense and refractory, elevated temperature resistant insulating cover member of highly-compressed at least substantially ceramic fiber, said fiber being compressed in an amount above about 50 percent to a fiber density, basis dry fiber, of at least about 16 pounds per cubic foot.
Claim 69
Dependent Claim
71 words
In glass conveying apparatus wherein sheet glass at elevated temperature is conveyed across roller conveyors, the improvement comprising roller conveyors having an inner shaft and at least one dense and refractory, elevated temperature resistant insulating cover member of highly-compressed at least substantially ceramic fiber, said fiber being compressed in an amount above about 50 percent to a fiber density, basis dry fiber, of at least about 16 pounds per cubic foot.
Claim 70
Dependent Claim
99 words
In a conveying apparatus wherein sheet articles at elevated temperature are conveyed across roller conveyors, the improvement comprising roller conveyors having an inner shaft and at least one dense and refractory, elevated temperature resistant insulating cover member having an inner layer comprising highly-compressed at least substantially ceramic fiber, and an outer shot containment layer as a covering for said inner ceramic fiber layer, wherein said ceramic fiber includes fibers of different lengths, said fiber being compressed in an amount above about 50 percent to a fiber density, basis dry fiber, of at least about 16 pounds per cubic foot.
Claim 71
Dependent Claim
99 words
In a conveying apparatus wherein sheet articles at elevated temperature are conveyed across roller conveyors, the improvement comprising roller conveyors having an inner shaft and at least one dense and refractory, elevated temperature resistant insulating cover member having an inner layer comprising highly-compressed at least substantially ceramic fiber, and an outer shot containment layer as a covering for said inner ceramic fiber layer, wherein said ceramic fiber includes fibers of different lengths, said fiber being compressed in an amount above about 50 percent to a fiber density, basis dry fiber, of at least about 16 pounds per cubic foot.
Claim 72
Dependent Claim
19 words
The conveying apparatus of claim 61, wherein said compressed fiber is compressed in an amount up to 85 percent.
Claim 73
Dependent Claim
19 words
The conveying apparatus of claim 61, wherein said compressed fiber is compressed in an amount above about 55 percent.
Claim 74
Dependent Claim
19 words
The conveying apparatus of claim 61, wherein said compressed fiber is compressed in an amount above about 60 percent.
Claim 75
Dependent Claim
25 words
The conveying apparatus of claim 61, wherein said fiber is compressed to a fiber density, basis dry fiber, above about 20 pounds per cubic foot.
Claim 76
Dependent Claim
25 words
The conveying apparatus of claim 61, wherein said fiber is compressed to a fiber density, basis dry fiber, above about 22 pounds per cubic foot.
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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) | 1996-04-26 | 1996-10-26 | 1997-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-26 | 2000-10-26 | 2001-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-26 | 2004-10-26 | 2005-04-27 | $7700.00 | Window Closed / Lapsed |