US4018589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass shaping form mold
Assignee: GKN Aerospace Transparency Systems Inc
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Filing: 1976-01-22
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Granted: 1977-04-19
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Expires: 1996-01-22
Abstract
Abstract A form for shaping softened glass on a full-contact mold without spalling or mark-off. The invention includes a base having a plurality of threaded rods extending vertically therefrom; each rod having a trunnion threaded thereon for adjusting purposes. The trunnions make engagement with support members which maintain a mold sheet for forming the glass. The support members may have clamps on them at each end thereof for purposes of securing the mold sheet. In a preferred embodiment of the invention a lubricated plane is provided over the forming sheet; the lubricating plane preferably comprising a powder-impregnated fiber glass sheet.
Inventors
- 👤 William D. Egbert
- 👤 Wilson C. McDonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:36
CPC Classifications
C; C03; C03B; C03B40/00; C03B40/005; C03B23/00; C03B23/02; C03B23/023; C03B23/025; C03B23/0252
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
127 words
A form for shaping planar sheets of glass into curvate configurations, comprising: a base having opposed spaced apart sides; a first plurality of horizontal support members having a trunnion affixed to each of two ends thereof; a second plurality of threaded rods, rotatable within and extending upwardly from said spaced apart sides of said base and having a trunnion fitting threaded thereon, said support members extending between pairs of said rods on opposite sides of said base and wherein the trunnions of each of said support members engage the trunnion fittings of the associated rods; clamps affixed to each of the two ends of said support members; and a full contact flexible mold plate maintained upon said support members and secured about its periphery by said clamps.
Claim 2
Dependent Claim
127 words
A form for shaping planar sheets of glass into curvate configurations, comprising: a base having opposed spaced apart sides; a first plurality of horizontal support members having a trunnion affixed to each of two ends thereof; a second plurality of threaded rods, rotatable within and extending upwardly from said spaced apart sides of said base and having a trunnion fitting threaded thereon, said support members extending between pairs of said rods on opposite sides of said base and wherein the trunnions of each of said support members engage the trunnion fittings of the associated rods; clamps affixed to each of the two ends of said support members; and a full contact flexible mold plate maintained upon said support members and secured about its periphery by said clamps.
Claim 3
Dependent Claim
37 words
The form for shaping planar sheets of glass as recited in claim 1 wherein said rods are calibrated and have means thereon for rotating said rods within said base to affectuate movement of the associated trunnion fittings.
Claim 4
Dependent Claim
20 words
The form for shaping planar sheets of glass as recited in claim 1 wherein said clamps are of spring-steel construction.
Claim 5
Dependent Claim
27 words
The form for shaping planar sheets of glass as recited in claim 3 which further includes a powder-impregnated fiber glass strip plane placed atop said mold plate.
Claim 6
Independent Claim
86 words
A device for shaping planar sheets of glass into curvate configurations without spalling or mark-off, comprising: a base having opposed sides; a plurality of threaded rods rotatably received within said opposed sides of said base and vertically extending therefrom; a plurality of trunnion assemblies threadily engaged with each of said rods; horizontal support members interconnected between said trunnion assemblies and having spring-steel clamps at each end thereof; and a flexible plate maintained atop said horizontal support members and secured about the periphery thereof by said clamps.
Claim 7
Independent Claim
86 words
A device for shaping planar sheets of glass into curvate configurations without spalling or mark-off, comprising: a base having opposed sides; a plurality of threaded rods rotatably received within said opposed sides of said base and vertically extending therefrom; a plurality of trunnion assemblies threadily engaged with each of said rods; horizontal support members interconnected between said trunnion assemblies and having spring-steel clamps at each end thereof; and a flexible plate maintained atop said horizontal support members and secured about the periphery thereof by said clamps.
References Cited (Backward Citations)
US2560599A
Cited
US3367764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-18 | 1980-10-18 | 1981-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-18 | 1984-10-18 | 1985-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-18 | 1988-10-18 | 1989-04-19 | $7700.00 | Window Closed / Lapsed |