US3046169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prepressing of laminated safety glass panels
Assignee: PPG Industries Inc
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Filing: 1958-03-17
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Granted: 1962-07-24
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Expires: 1978-03-17
Abstract
No abstract record available.
Inventors
- 👤 Ronald E Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:31
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10807; B32B17/10816; B32B17/10825; B32B17/10862
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
155 words
APPARATUS FOR PREPRESSING CURVED LAMINATED SAFETY GLASS PANELS, COMPRISING A BANK OF PRESSER HEADS, EACH PRESSER HEAD HAVING A FACE OF RESILIENT MATERIAL, MEANS FOR SUPPORTING AND SEPARATELY MOVING EACH OF SAID PRESSER HEADS IN A DIRECTION NORMAL TO SAID FACE, MEANS FOR POSITIONING ONE OF SAID PANELS IN REGISTER WITH SAID BANK OF PRESSER HEADS AND FOR RESISTING FORCES EXERTED ON SAID PANEL BY SAID HEADS, SAID MOVING MEANS BEING ARRANGED FOR MOVEMENT OF EACH SAID PRESSER HEAD BETWEEN AN OPEN POSITION DISPLACED FROM SAID PANEL POSITIONING MEANS FOR PLACEMENT OF ONE OF SIAD PANELS ON SAID POSITIONING MEANS AND A CLOSED POSITION IN WHICH THE FACE OF SAID PRESSER HEAD IS IN DIRECT CONTACT WITH SAID PLACED PANEL TO FORCE SAID PLACE PANEL AGAINST SAID POSITIONING MEANS, THE FACES OF THE PRESSER HEADS OF THE BANK COOPERATING, UPON MOVEMENT OF THE BANK INTO THE CLOSED POSITION, TO DEFINE A CURVED, DISCONTINUOUS PANEL-CONTACTING SURFACE.
Claim 2
Dependent Claim
155 words
APPARATUS FOR PREPRESSING CURVED LAMINATED SAFETY GLASS PANELS, COMPRISING A BANK OF PRESSER HEADS, EACH PRESSER HEAD HAVING A FACE OF RESILIENT MATERIAL, MEANS FOR SUPPORTING AND SEPARATELY MOVING EACH OF SAID PRESSER HEADS IN A DIRECTION NORMAL TO SAID FACE, MEANS FOR POSITIONING ONE OF SAID PANELS IN REGISTER WITH SAID BANK OF PRESSER HEADS AND FOR RESISTING FORCES EXERTED ON SAID PANEL BY SAID HEADS, SAID MOVING MEANS BEING ARRANGED FOR MOVEMENT OF EACH SAID PRESSER HEAD BETWEEN AN OPEN POSITION DISPLACED FROM SAID PANEL POSITIONING MEANS FOR PLACEMENT OF ONE OF SIAD PANELS ON SAID POSITIONING MEANS AND A CLOSED POSITION IN WHICH THE FACE OF SAID PRESSER HEAD IS IN DIRECT CONTACT WITH SAID PLACED PANEL TO FORCE SAID PLACE PANEL AGAINST SAID POSITIONING MEANS, THE FACES OF THE PRESSER HEADS OF THE BANK COOPERATING, UPON MOVEMENT OF THE BANK INTO THE CLOSED POSITION, TO DEFINE A CURVED, DISCONTINUOUS PANEL-CONTACTING SURFACE.
Claim 3
Dependent Claim
100 words
IN A METHOD OF PREPRESSING A CURVED LAMINATED SAFETY PANEL COMPRISING TWO CURVED SHEETS OF GLASS AND A PLASTIC INTERLAYER BETWEEN SAID TWO CURVED SHEETS, THE IMPROVEMENT COMPRISING FIRST IMPOSING A LOCALIZED SQUEEZING PRESSURE DIRECTLY ON A FIRST AREA OF SAID CURVED PANEL REMOTE FROM THE EXTREMITIES OF SAID CURVED PANEL, AND THEN IMPOSING LOCALIZED SQUEEZING PRESSURE DIRECTLY ON A SECOND AREA IMMEDIATELY SURROUNDING SAID FIRST AREA ON ALL SIDES WHILE MAINTAINING THE LOCALIZED SQUEEZING PRESSURE UPON SAID FIRST AREA AND PRIOR TO IMPOSITION OF SQUEEZING PRESSURE UPON ANY PART OF SAID CURVED PANEL OUTSIDE SAID FIRST AND SECOND AREAS.
Claim 4
Dependent Claim
100 words
IN A METHOD OF PREPRESSING A CURVED LAMINATED SAFETY PANEL COMPRISING TWO CURVED SHEETS OF GLASS AND A PLASTIC INTERLAYER BETWEEN SAID TWO CURVED SHEETS, THE IMPROVEMENT COMPRISING FIRST IMPOSING A LOCALIZED SQUEEZING PRESSURE DIRECTLY ON A FIRST AREA OF SAID CURVED PANEL REMOTE FROM THE EXTREMITIES OF SAID CURVED PANEL, AND THEN IMPOSING LOCALIZED SQUEEZING PRESSURE DIRECTLY ON A SECOND AREA IMMEDIATELY SURROUNDING SAID FIRST AREA ON ALL SIDES WHILE MAINTAINING THE LOCALIZED SQUEEZING PRESSURE UPON SAID FIRST AREA AND PRIOR TO IMPOSITION OF SQUEEZING PRESSURE UPON ANY PART OF SAID CURVED PANEL OUTSIDE SAID FIRST AND SECOND AREAS.
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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) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |