Patent US4357291A successfully refreshed from Google Patents.
US3078627A
Expired / Lapsed
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Method and apparatus for fabricating all-glass multiple sheet glazing units
Assignee: Libbey Owens Ford Glass Co
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Filing: 1960-11-15
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Granted: 1963-02-26
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Expires: 1980-11-15
Abstract
No abstract record available.
Inventors
- 👤 Donald W Dunipace
- 👤 Charles H Cowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:03
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/20; C03B23/24; C03B23/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
IN A METHOD OF PRODUCING A GLAZING UNIT OF THE TYPE COMPRISING SPACED SHEETS OF GLASS JOINED TOGETHER AT THEIR MARGINAL EDGES TO FORM AN AIR SPACE THEREBETWEEN, WHICH SPACE COMMUNICATES WITH THE ATMOSPHERE THROUGH A PORE OPENING, THE STEPS OF, GRIPPING SAID SHEETS INTERMEDIATE THEIR EDGES, RESILIENTLY BOWING SAID SHEETS OUTWARDLY AWAY FROM EACH OTHER, HERMETICALLY SEALING SAID PORE OPENING WHILE SAID SHEETS ARE BOWED APART AND SUBSEQUENTLY RELEASING SAID SHEETS ALLOWING THE LATTER TO SPRING BACK TOWARD THEIR INITIAL POSITION TO COMPRESS THE AIR TRAPPED BETWEEN THE SHEETS WHEREBY THE PRESSURE TENDING TO PUSH THE SHEETS APART IS GREATER THAN THE BAROMETRIC PRESSURE IN ALL CONDITIONS OF NORMAL SERVICE USE OF THE UNIT.
Claim 2
Dependent Claim
115 words
IN A METHOD OF PRODUCING A GLAZING UNIT OF THE TYPE COMPRISING SPACED SHEETS OF GLASS JOINED TOGETHER AT THEIR MARGINAL EDGES TO FORM AN AIR SPACE THEREBETWEEN, WHICH SPACE COMMUNICATES WITH THE ATMOSPHERE THROUGH A PORE OPENING, THE STEPS OF, GRIPPING SAID SHEETS INTERMEDIATE THEIR EDGES, RESILIENTLY BOWING SAID SHEETS OUTWARDLY AWAY FROM EACH OTHER, HERMETICALLY SEALING SAID PORE OPENING WHILE SAID SHEETS ARE BOWED APART AND SUBSEQUENTLY RELEASING SAID SHEETS ALLOWING THE LATTER TO SPRING BACK TOWARD THEIR INITIAL POSITION TO COMPRESS THE AIR TRAPPED BETWEEN THE SHEETS WHEREBY THE PRESSURE TENDING TO PUSH THE SHEETS APART IS GREATER THAN THE BAROMETRIC PRESSURE IN ALL CONDITIONS OF NORMAL SERVICE USE OF THE UNIT.
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) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |