US3073137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Press sealing process and apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1960-02-01
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Granted: 1963-01-15
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Expires: 1980-02-01
Abstract
No abstract record available.
Inventors
- 👤 Hugh D Fraser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:00
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/24; H01J9/32; H01J9/323; H01J9/326; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49934
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
92 words
THE PROCESS OF FORMING A PRESS SEAL IN A VITREOUS TUBE AT A PREDETERMINED POINT THEREON COMPRISING, HEATING A SEGMENT OF THE TUBE AT THAT POINT TO RENDER AND KEEP IT PLASTIC DURING THE SEALING OPERATION, APPLYING PRESSURE TO OPPOSITE SIDES OF ONLY A PRESELECTED PORTION OF SAID HEATED TUBE SEGMENT TO COLLAPSE AND SEAL OFF THAT PORTION, AND THEN COMPRESSING ONLY THE UNSEALED PORTION OF SAID TUBE SEGMENT TO EXTEND THE SEAL ACROSS THE FULL WIDTH THEREOF AND THUS COMPLETE THE CLOSURE OF SAID TUBE AND THE FABRICATION OF SAID SEAL.
Claim 2
Dependent Claim
92 words
THE PROCESS OF FORMING A PRESS SEAL IN A VITREOUS TUBE AT A PREDETERMINED POINT THEREON COMPRISING, HEATING A SEGMENT OF THE TUBE AT THAT POINT TO RENDER AND KEEP IT PLASTIC DURING THE SEALING OPERATION, APPLYING PRESSURE TO OPPOSITE SIDES OF ONLY A PRESELECTED PORTION OF SAID HEATED TUBE SEGMENT TO COLLAPSE AND SEAL OFF THAT PORTION, AND THEN COMPRESSING ONLY THE UNSEALED PORTION OF SAID TUBE SEGMENT TO EXTEND THE SEAL ACROSS THE FULL WIDTH THEREOF AND THUS COMPLETE THE CLOSURE OF SAID TUBE AND THE FABRICATION OF SAID SEAL.
Claim 3
Dependent Claim
131 words
IN APPARATUS FOR FORMING A PRESS SEAL ACROSS A PRESELECTED SEGMENT OF A VITREOUS TUBE, A FIRST AND A SECOND PAIR OF MOVABLE PRESS JAWS HAVING WORK FACES AND MEANS FOR HOLDING SAID TUBE AND SEQUENTIALLY POSITIONING THE PRESELECTED SEGMENT THEREOF BETWEEN AND CENTRALLY OF SAID FIRST AND SECOND PAIRS OF JAWS, THE WORK FACES OF SAID FIRST PAIR OF JAWS HAVING A PAIR OF MATCHING BOSSES THEREIN THE OPPOSED SURFACES WHEREOF ARE PLANAR AND HAVE A MAXIMUM TRANSVERSE DIMENSION SMALLER THAN THE DIAMETER OF THE PRESELECTED TUBE SEGMENT, AND THE WORK FACES OF SAID SECOND PAIR OF JAWS BEING PLANAR AND HAVING A PAIR OF MATCHING DEPRESSIONS THEREIN THAT CORRESPOND BOTH IN SIZE AND LOCATION WITH THE AREA OF COMPRESSION DEFINED BY THE BOSSES IN SAID FIRST PAIR OF JAWS.
Claim 4
Dependent Claim
131 words
IN APPARATUS FOR FORMING A PRESS SEAL ACROSS A PRESELECTED SEGMENT OF A VITREOUS TUBE, A FIRST AND A SECOND PAIR OF MOVABLE PRESS JAWS HAVING WORK FACES AND MEANS FOR HOLDING SAID TUBE AND SEQUENTIALLY POSITIONING THE PRESELECTED SEGMENT THEREOF BETWEEN AND CENTRALLY OF SAID FIRST AND SECOND PAIRS OF JAWS, THE WORK FACES OF SAID FIRST PAIR OF JAWS HAVING A PAIR OF MATCHING BOSSES THEREIN THE OPPOSED SURFACES WHEREOF ARE PLANAR AND HAVE A MAXIMUM TRANSVERSE DIMENSION SMALLER THAN THE DIAMETER OF THE PRESELECTED TUBE SEGMENT, AND THE WORK FACES OF SAID SECOND PAIR OF JAWS BEING PLANAR AND HAVING A PAIR OF MATCHING DEPRESSIONS THEREIN THAT CORRESPOND BOTH IN SIZE AND LOCATION WITH THE AREA OF COMPRESSION DEFINED BY THE BOSSES IN SAID FIRST PAIR OF JAWS.
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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |