Patent US3807982A successfully refreshed from Google Patents.
US3807982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for conveying heat treated flat or shaped glass sheets
Assignee: PPG Industries Inc
•
Filing: 1972-09-05
•
Granted: 1974-04-30
•
Expires: 1992-09-05
Abstract
Abstract Apparatus for conveying hot glass sheets in a non-vertical orientation through a cooling station on spaced rolls capable of adjustment to support and convey either flat or shaped glass sheets. Separate cover means that is harmless to hot glass is provided for covering the periphery of each roll without closing the space between adjacent rolls so that the space between adjacent rolls is left open to permit free flow of cooling fluid against the supported surface of the conveyed hot glass sheets.
Inventors
- 👤 G Claassen
- 👤 R Canonaco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:29
CPC Classifications
C; C03; C03B; C03B27/00; C03B27/04; C03B27/044; C03B27/0442; C03B35/00; C03B35/14; C03B35/16; C03B35/18; C03B35/181; C03B35/182; C03B35/186; C03B40/00; C03B40/005
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
200 words
Apparatus for conveying heated glass sheets that are either flat or curved comprising a plurality of longitudinally spaced rolls disposed along a given path, each roll including a central shaft, a pair of axially spaced hubs mounted on said central shaft, means for rotating said central shafts in unison, a series of peripheral shafts having sufficient rigidity to support a moving glass sheet thereon without appreciable distortion interconnecting said hubs, means securing one of said hubs on said central shaft in any of a series of positions in alignment with or in angularly offset relation relative to the other of said hubs to enable said hubs to support said peripheral shafts along spaced portions of a discontinuous curved surface whose upper portion is one of a series of surfaces of different curvature concavely curved or flat in cross-section, and individual cover means of a material harmless to glass for each roll supported around said peripheral shafts of each said roll in spaced relation to said central shaft to protect said conveyed glass sheets from direct contact with said peripheral shafts and to enable said space between adjacent rolls to be open to permit free passage of air between adjacent rolls.
Claim 2
Dependent Claim
200 words
Apparatus for conveying heated glass sheets that are either flat or curved comprising a plurality of longitudinally spaced rolls disposed along a given path, each roll including a central shaft, a pair of axially spaced hubs mounted on said central shaft, means for rotating said central shafts in unison, a series of peripheral shafts having sufficient rigidity to support a moving glass sheet thereon without appreciable distortion interconnecting said hubs, means securing one of said hubs on said central shaft in any of a series of positions in alignment with or in angularly offset relation relative to the other of said hubs to enable said hubs to support said peripheral shafts along spaced portions of a discontinuous curved surface whose upper portion is one of a series of surfaces of different curvature concavely curved or flat in cross-section, and individual cover means of a material harmless to glass for each roll supported around said peripheral shafts of each said roll in spaced relation to said central shaft to protect said conveyed glass sheets from direct contact with said peripheral shafts and to enable said space between adjacent rolls to be open to permit free passage of air between adjacent rolls.
Claim 3
Dependent Claim
40 words
Apparatus as in claim 1, wherein said cover means harmless to glass consists essentially of an expandable porous fiber glass sleeve mounted over said peripheral shafts to provide a curved glass sheet supporting surface smoothly fitting over said peripheral shafts.
Claim 4
Dependent Claim
25 words
Apparatus as in claim 1, wherein said peripheral shafts are composed of a flexible metal or metal alloy having sufficient ductility to form a rod.
Claim 5
Dependent Claim
12 words
Apparatus as in claim 3, wherein said flexible metal is spring steel.
Claim 6
Dependent Claim
72 words
Apparatus as in claim 1, wherein said plurality of longitudinally spaced rolls is disposed along a given path between a pair of plenum chambers spaced on opposite sides of said given path, each of said plenum chambers leading into orifices for supplying cooling medium under pressure against opposite sides of said given path to impinge against the opposite surfaces of said heated, shaped glass sheet as the latter transverses said given path.
Claim 7
Dependent Claim
33 words
Apparatus as in claim 5, wherein said given path is an extension of a conveyor comprising solid rolls for transporting a succession of glass sheets through a furnace and a glass shaping station.
Claim 8
Dependent Claim
15 words
Apparatus as in claim 6, wherein said glass shaping station is a roll pressing station.
Claim 9
Dependent Claim
166 words
A conveyor roll for supporting a glass sheet for movement between spaced, opposed plenum chambers comprising a central shaft, a pair of axially aligned hubs mounted on said central shaft, a series of peripheral shafts having sufficient rigidity to support a moving glass sheet thereon without appreciable distortion connecting said hubs, means securing one of said hubs on said central shaft in any of a series of positions in alignment with or in angularly offset relatioN relative to the other of said hubs to enable said hubs to support said peripheral shafts along spaced portions of a discontinuous curved surface whose upper portion is one of a series of surfaces of different curvature concavely curved or flat in cross-section, and individual cover means of a material harmless to glass supported around said peripheral shafts of said roll in contact with each of said peripheral shafts and in spaced relation to said central shaft to protect said moving glass sheet from direct contact with said peripheral shafts.
Claim 10
Dependent Claim
166 words
A conveyor roll for supporting a glass sheet for movement between spaced, opposed plenum chambers comprising a central shaft, a pair of axially aligned hubs mounted on said central shaft, a series of peripheral shafts having sufficient rigidity to support a moving glass sheet thereon without appreciable distortion connecting said hubs, means securing one of said hubs on said central shaft in any of a series of positions in alignment with or in angularly offset relatioN relative to the other of said hubs to enable said hubs to support said peripheral shafts along spaced portions of a discontinuous curved surface whose upper portion is one of a series of surfaces of different curvature concavely curved or flat in cross-section, and individual cover means of a material harmless to glass supported around said peripheral shafts of said roll in contact with each of said peripheral shafts and in spaced relation to said central shaft to protect said moving glass sheet from direct contact with said peripheral shafts.
Claim 11
Dependent Claim
42 words
A conveyor roll as in claim 8, wherein said cover means harmless to glass consists essentially of an expandable porous fiber glass sleeve mounted over said peripheral shafts to provide a curved glass sheet supporting surface smoothly fitting over said peripheral shafts.
Claim 12
Dependent Claim
27 words
A conveyor roll as in claim 8, wherein said peripheral shafts are composed of a flexible metal or metal alloy having sufficient ductility to form a rod.
References Cited (Backward Citations)
US3301383A
Cited
US3701644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |