US3220818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for supporting glass sheets
Assignee: PPG Industries Inc
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Filing: 1962-06-07
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Granted: 1965-11-30
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Expires: 1982-06-07
Abstract
No abstract record available.
Inventors
- 👤 Herbert W Barch
- 👤 Joseph D Kelly
- 👤 Rudolph L Malobicky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:43
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/02; C03B23/023; C03B23/03; C03B23/031; C03B23/0315; C03B35/00; C03B35/14; C03B35/20; C03B35/202; C03B35/205
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
209 words
A METHOD OF SUPPORTING FLAT GLASS SHEETS HAVING UPPER AND LOWER EDGES AND OPPOSING MAJOR FLAT SURFACES DURING BENDING COMPRISING SUPPORTING A FLAT GLASS SHEET AT ITS BOTTOM EDGE ON A RIGID BOTTOM EDGE SUPPORT WHILE LOOSELY ENGAGING SAID SHEET ALONG ITS UPPER EDGE PORITON WITH BALANCING MEANS TO BALANCE SAID SHEET IN A SUBSTANTIALLY VERTICAL POSITION, HEATING SAID SHEET WHILE SO SUPPORTED AND BALANCED TO SUBSTANTIALLY ITS DEFORMATION TEMPERATURE, MOVING COMPLEMENTARY SHAPING MEMBERS TOWARD ONE ANOTHER INTO CONTACT WITH THE OPPOSITE FLAT MAJOR SURFACES OF SAID HEATED GLASS SHEET UNTIL SAID SHEET IS IN PRESSURIZED CONTACT WITH SAID SHAPING MEMBERS; AND, AS SAID SHAPING MEMBERS MOVE INTO PRESSURIZED CONTACT WITH SAID SHEDT, MOVING SAID UPPER EDGE BALANCING MEANS UPWARDLY OUT OF ENGAGEMENT WITH THE UPPER EDGE OF SAID SHEET, MAINTAINING THE SHAPING MEMBERS IN PRESSURIZED CONTACT AGAINST THE HEAT-SOFTENED GLASS SHEET SURFACES AS THE GLASS SHEET ASSUMES THE SHAPE OF THE COMPLEMENTARY SHAPING MEMBERS, WITHDRAWING THE SHAPING MEMBERS FROM THE SHAPED GLASS SHEET AND, IMMEDIATELY LOWERING SAID UPPER EDGE BALANCE MEANS TO REENGAGE LOOSELY THE UPPER EDGE OF THE SHAPED SHEET WHILE THE LOWER EDGE THEREOF IS SUPPORTED ON SAID BOTTOM EDGE SUPPORT, AND IMMEDIATELY COOLING THE SHAPED GLASS SHEET WHILE SO SUPPORTED TO BELOW ITS DEFORMATION TEMPERATURE.
Claim 2
Independent Claim
209 words
A METHOD OF SUPPORTING FLAT GLASS SHEETS HAVING UPPER AND LOWER EDGES AND OPPOSING MAJOR FLAT SURFACES DURING BENDING COMPRISING SUPPORTING A FLAT GLASS SHEET AT ITS BOTTOM EDGE ON A RIGID BOTTOM EDGE SUPPORT WHILE LOOSELY ENGAGING SAID SHEET ALONG ITS UPPER EDGE PORITON WITH BALANCING MEANS TO BALANCE SAID SHEET IN A SUBSTANTIALLY VERTICAL POSITION, HEATING SAID SHEET WHILE SO SUPPORTED AND BALANCED TO SUBSTANTIALLY ITS DEFORMATION TEMPERATURE, MOVING COMPLEMENTARY SHAPING MEMBERS TOWARD ONE ANOTHER INTO CONTACT WITH THE OPPOSITE FLAT MAJOR SURFACES OF SAID HEATED GLASS SHEET UNTIL SAID SHEET IS IN PRESSURIZED CONTACT WITH SAID SHAPING MEMBERS; AND, AS SAID SHAPING MEMBERS MOVE INTO PRESSURIZED CONTACT WITH SAID SHEDT, MOVING SAID UPPER EDGE BALANCING MEANS UPWARDLY OUT OF ENGAGEMENT WITH THE UPPER EDGE OF SAID SHEET, MAINTAINING THE SHAPING MEMBERS IN PRESSURIZED CONTACT AGAINST THE HEAT-SOFTENED GLASS SHEET SURFACES AS THE GLASS SHEET ASSUMES THE SHAPE OF THE COMPLEMENTARY SHAPING MEMBERS, WITHDRAWING THE SHAPING MEMBERS FROM THE SHAPED GLASS SHEET AND, IMMEDIATELY LOWERING SAID UPPER EDGE BALANCE MEANS TO REENGAGE LOOSELY THE UPPER EDGE OF THE SHAPED SHEET WHILE THE LOWER EDGE THEREOF IS SUPPORTED ON SAID BOTTOM EDGE SUPPORT, AND IMMEDIATELY COOLING THE SHAPED GLASS SHEET WHILE SO SUPPORTED TO BELOW ITS DEFORMATION TEMPERATURE.
Claim 3
Dependent Claim
161 words
APPARATUS FOR SUPPORTING A GLASS SHEET IN A SUBSTANTIALLY VERTICAL POSITION COMPRISING A FRAME, MEANS ATTACHED TO SAID FRAME FOR SUPPORTING THE BOTTOM EDGE OF THE GLASS SHEET, SAID MEANS HAVING A FLAT GLASS SUPPORTING SURFACE OF EXPANDED METAL DISPOSED IN FLATWISE ENGAGEMENT WITH THE BOTTOM EDGE SURFACE OF THE GLASS SHEET, A VERTICALLY MOVABLE MEMBER SUPPORTED FOR FREE VERTICAL MOVEMENT WITHIN SAID FRAME, AND BALANCING MEANS CARRIED BY SAID VERTICALLY MOVABLE MEMBER FOR BALANCING THE GLASS SHEET IN A SUBSTANTIALLY VERTICAL POSITION BY LOOSELY ENGAGING THE UPPER EDGE PORITON THEREOF, SAID BALANCING MEANS COMPRISING A PAIR OF SPACED HAIRPIN-LIKE MEMBERS ATTACHED TO AND EXTENDING DOWNWARD FROM SAID VERTICALLY MOVABLE MEMBER A RELATIVELY LARGE VERTICAL DISTANCE IN SPACED VERTICAL PLANES ON OPPOSITE SIDES OF SAID VERTICAL WALLS OF EXPANDED METAL ATTACHED TO AND EXTENDING DOWNWARD FROM SAID VERTICALLY MOVABLE MEMBER A RELATIVELY SMALL VERTICAL DISTANCE IN SPACED VERTICAL PLANES ON OPPOSITE SIDES OF SAID VERTICAL POSITION OCCUPIED BY SAID GLASS SHEET.
Claim 4
Dependent Claim
161 words
APPARATUS FOR SUPPORTING A GLASS SHEET IN A SUBSTANTIALLY VERTICAL POSITION COMPRISING A FRAME, MEANS ATTACHED TO SAID FRAME FOR SUPPORTING THE BOTTOM EDGE OF THE GLASS SHEET, SAID MEANS HAVING A FLAT GLASS SUPPORTING SURFACE OF EXPANDED METAL DISPOSED IN FLATWISE ENGAGEMENT WITH THE BOTTOM EDGE SURFACE OF THE GLASS SHEET, A VERTICALLY MOVABLE MEMBER SUPPORTED FOR FREE VERTICAL MOVEMENT WITHIN SAID FRAME, AND BALANCING MEANS CARRIED BY SAID VERTICALLY MOVABLE MEMBER FOR BALANCING THE GLASS SHEET IN A SUBSTANTIALLY VERTICAL POSITION BY LOOSELY ENGAGING THE UPPER EDGE PORITON THEREOF, SAID BALANCING MEANS COMPRISING A PAIR OF SPACED HAIRPIN-LIKE MEMBERS ATTACHED TO AND EXTENDING DOWNWARD FROM SAID VERTICALLY MOVABLE MEMBER A RELATIVELY LARGE VERTICAL DISTANCE IN SPACED VERTICAL PLANES ON OPPOSITE SIDES OF SAID VERTICAL WALLS OF EXPANDED METAL ATTACHED TO AND EXTENDING DOWNWARD FROM SAID VERTICALLY MOVABLE MEMBER A RELATIVELY SMALL VERTICAL DISTANCE IN SPACED VERTICAL PLANES ON OPPOSITE SIDES OF SAID VERTICAL POSITION OCCUPIED BY SAID GLASS SHEET.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |