Patent US3867748A successfully refreshed from Google Patents.
US3867748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supporting and driving frangible rollers
Assignee: Pilkington North America Inc
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Filing: 1974-03-07
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Granted: 1975-02-25
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Expires: 1994-03-07
Abstract
Abstract Cylindrical ceramic conveying rollers, with special end connections to metal shafts that support the rollers for power rotation through an adhesive.
Inventors
- 👤 Alfred H Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:49
CPC Classifications
C; C03; C03B; C03B35/00; C03B35/14; C03B35/16; C03B35/18; C03B35/186; C03B35/165; C03B35/181
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
100 words
In a conveyor roller usable in the heat treatment of glass sheets and which includes a ceramic cylinder, shafts located at and in alignment with the ends of said cylinder, and means for drivingly connecting said cylinder with at least one of said shafts; the improvement in which said connecting means comprises a cylindrical member rotatable with said one of said shafts and that is in circumferential contact with said ceramic cylinder adjacent an end thereof and partially encloses a cavity between said cylindrical member and said ceramic cylinder; and a supply of a heat expandable adhesive in said cavity.
Claim 2
Dependent Claim
100 words
In a conveyor roller usable in the heat treatment of glass sheets and which includes a ceramic cylinder, shafts located at and in alignment with the ends of said cylinder, and means for drivingly connecting said cylinder with at least one of said shafts; the improvement in which said connecting means comprises a cylindrical member rotatable with said one of said shafts and that is in circumferential contact with said ceramic cylinder adjacent an end thereof and partially encloses a cavity between said cylindrical member and said ceramic cylinder; and a supply of a heat expandable adhesive in said cavity.
Claim 3
Dependent Claim
19 words
A structure as defined in claim 1, in which means is provided for relieving excess pressure in said cavity.
Claim 4
Dependent Claim
30 words
A structure as defined in claim 2, in which said pressure relieving means comprises a passage formed between said ceramic cylinder and said cylindrical member, and leading from said cavity.
Claim 5
Dependent Claim
49 words
A structure as defined in claim 1, in which a wall of said cylindrical member is circumferentially grooved to form said cavity, and said cylindrical member is provided with circumferentially arranged lands at either side of said cavity designed for mating engagement with a surface of said ceramic cylinder.
Claim 6
Dependent Claim
37 words
A structure as defined in claim 4 in which said wall of said cylindrical member is also grooved longitudinally thereof to provide pressure relieving passages leading from said cavity between said cylindrical member and said ceramic cylinder.
Claim 7
Dependent Claim
39 words
A structure as defined in claim 4, in which said cylindrical member is hollow and embraces said end of said ceramic cylinder and said cavity is formed by a circumferentially arranged groove in the inside wall of said member.
Claim 8
Dependent Claim
47 words
A structure as defined in claim 4, in which said ceramic cylinder is a tube and said cylindrical member is a solid member fitting into said end of said tube, and said cavity is formed by a circumferentially arranged groove in an outside wall of said member.
Claim 9
Dependent Claim
54 words
A structure as defined in claim 6, in which said drivingly connecting means further comprises a hub on said one shaft having a surface thereon adapted to matingly engage a corresponding surface on said hollow cylindrical member, and said hub is connected to said cylindrical member for sliding but not rotative movement relative thereto.
Claim 10
Dependent Claim
15 words
A structure as defined in claim 8, in which said engagable corresponding surfaces are tapered.
Claim 11
Dependent Claim
33 words
A structure as defined in claim 1, in which said shafts are of metal, said ceramic cylinder is of fused silica, and said adhesive has an expansion of approximately 114 X 10 6.
References Cited (Backward Citations)
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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) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |