Patent US6134137A successfully refreshed from Google Patents.
Patent US3775087A successfully refreshed from Google Patents.
US3775087A
Expired / Lapsed
US
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Apparatus for conveying and heat treating hot glass with a roller conveyor
Assignee: Pilkington North America Inc
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Filing: 1972-03-06
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Granted: 1973-11-27
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Expires: 1992-03-06
Abstract
Abstract Tubular conveyor rolls, in the chilling section of a sheet glass tempering apparatus, that are provided with braided sleeve coverings and have their hollow interiors partially filled with lead shot to dampen unwanted vibrations.
Inventors
- 👤 G Ritter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:34
CPC Classifications
C; C03; C03B; C03B27/00; C03B27/04; C03B27/044; C03B27/0442; C03B35/00; C03B35/14; C03B35/16; C03B35/18; C03B35/181; C03B35/183; C03B40/00; C03B40/005
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
85 words
In apparatus for tempering glass sheets, the combination; with means defining a horizontal path of travel through successive heating and chilling areas for said sheets, and means below said path in said chilling area for directing a cooling medium against said sheets; of a plurality of rotatable cylindrical rolls for supporting and moving said sheets through said chilling area, said rolls having a hollow interior, and a vibration dampening substance confined in the hollow interiors of said rolls and substantially but not completely filling same.
Claim 2
Dependent Claim
85 words
In apparatus for tempering glass sheets, the combination; with means defining a horizontal path of travel through successive heating and chilling areas for said sheets, and means below said path in said chilling area for directing a cooling medium against said sheets; of a plurality of rotatable cylindrical rolls for supporting and moving said sheets through said chilling area, said rolls having a hollow interior, and a vibration dampening substance confined in the hollow interiors of said rolls and substantially but not completely filling same.
Claim 3
Dependent Claim
24 words
Apparatus as defined in claim 1 in which said cylindrical rolls are covered with a sleeve of refractory strands braided about a common axis.
Claim 4
Dependent Claim
14 words
Apparatus as defined in claim 1, in which said vibration dampening substance is particulate.
Claim 5
Dependent Claim
12 words
Apparatus as defined in claim 1 in which said substance is metallic.
Claim 6
Dependent Claim
13 words
Apparatus as defined in claim 4 in which said substance is lead shot.
Claim 7
Dependent Claim
21 words
Apparatus as defined in claim 5 in which said shot fills approximately 90 percent of the interior capacity of said rolls.
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |