Patent US4525196A successfully refreshed from Google Patents.
US4525196A
Expired / Lapsed
US
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Glass sheet handling devices
Assignee: PPG Industries Inc
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Filing: 1984-08-24
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Granted: 1985-06-25
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Expires: 2004-08-24
Abstract
Abstract Glass sheet handling devices are provided with glass sheet engaging surfaces composed of a phenolic resin reinforced with fibers of an aromatic polyamide composition. In a specific embodiment of this invention, a sufficient number of said fibers extend to an exposed surface of said devices to develop a coefficient of friction sufficient to prevent relative sliding between the exposed surface of said glass sheet engaging member and said glass sheet.
Inventors
- 👤 Michael T. Fecik
- 👤 John J. Ewing
- 👤 Edward I. Mates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:17
CPC Classifications
C; C03; C03B; C03B35/00; C03B35/14; C03B35/16; C03B35/18; C03B35/181; C03B35/182; C03B35/187; C03B35/189; C03B35/20; C03B35/202
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
94 words
Apparatus for handling a hot glass sheet during conveyance comprising a ring-like support member having a surface adapted to engage a heat-softened glass sheet and further having a relatively thin upper edge portion and a relatively thick lower portion, said surface consisting essentially of a phenolic resin reinforced with fibers composed of an aromatic polyamide composition, and means to support said ring-like member in an essentially horizontal orientation with the width of said ring extending essentially vertically to place an upper edge of said ring-like member in position to receive said hot glass sheet.
Claim 2
Dependent Claim
94 words
Apparatus for handling a hot glass sheet during conveyance comprising a ring-like support member having a surface adapted to engage a heat-softened glass sheet and further having a relatively thin upper edge portion and a relatively thick lower portion, said surface consisting essentially of a phenolic resin reinforced with fibers composed of an aromatic polyamide composition, and means to support said ring-like member in an essentially horizontal orientation with the width of said ring extending essentially vertically to place an upper edge of said ring-like member in position to receive said hot glass sheet.
Claim 3
Dependent Claim
14 words
Apparatus as in claim 1 wherein said ring-like support member is tapered in thickness.
Claim 4
Dependent Claim
18 words
Apparatus as in claim 1 wherein said ring-like support member has an upper edge portion recessed in thickness.
Claim 5
Dependent Claim
22 words
Appratus as in claim 1 wherein said ring-like support member has an elevational shape conforming to the shape of said glass sheet.
Claim 6
Dependent Claim
22 words
Apparatus as in claim 2 wherein said ring-like support member has an elevational shape conforming to the shape of said glass sheet.
Claim 7
Dependent Claim
22 words
Apparatus as in claim 3 wherein said ring-like support member has an elevational shape conforming to the shape of said glass sheet.
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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) | 1988-06-24 | 1988-12-24 | 1989-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-24 | 1992-12-24 | 1993-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-24 | 1996-12-24 | 1997-06-25 | $7700.00 | Window Closed / Lapsed |