Patent US3214258A successfully refreshed from Google Patents.
US3214258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blank mold means with pneumatic operated plunger for fabricating seamless high optical quality glass articles
Assignee: Fabricacion de Maquinas SA de CV
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Filing: 1963-09-30
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Granted: 1965-10-26
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Martin John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:17
CPC Classifications
C; C03; C03B; C03B11/00; C03B11/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A BLANK MOLD AND PLUNGER FOR A MACHINE FOR MAKING SEAMLESS GLASS ARTICLES OF HIGH OPTICAL QUALITY COMPRISING AN EXTERIOR CYLINDER BODY, A FIRST HOLLOW MOVABLE PISTON WITH A CLOSED TUBULAR EXTENSION EXTENDING THROUGH THE TOP PORTION OF SAID EXTERIOR CYLINDER BODY, A FREE FLOATING HOLLOW PISTON MOVABLE WITHIN SAID HOLLOW CYLINDER PORTION OF SAID FIRST HOLLOW PISTON HAVING A HOLLOW PLUNGER STEM WITH A PLUNGER ATTACHED EXTENDING THROUGH SAID FIRST HOLLOW PISTON AND THE BOTTOM PORTION OF SAID EXTERIOR CYLINDER BODY FOR MOVEMENT INTO A BLANK MOLD, MEANS FOR RECIPROCATING SAID FIRST HOLLOW PISTON AND SAID ENCLOSED FREE FLOATING PISTON INTO SAID BLANK MOLD, MEANS ON THE UPPER HOLLOW TUBULAR EXTENSION OF SAID FIRST HOLLOW PISTON ABOVE SAID FREE FLOATING PISTON FOR ADJUSTING THE AIR PRESSURE TO CUSHION THE MOVEMENT OF SAID FREE FLOATING HOLLOW PISTON INTO THE BLANK MOLD.
Claim 2
Dependent Claim
141 words
A BLANK MOLD AND PLUNGER FOR A MACHINE FOR MAKING SEAMLESS GLASS ARTICLES OF HIGH OPTICAL QUALITY COMPRISING AN EXTERIOR CYLINDER BODY, A FIRST HOLLOW MOVABLE PISTON WITH A CLOSED TUBULAR EXTENSION EXTENDING THROUGH THE TOP PORTION OF SAID EXTERIOR CYLINDER BODY, A FREE FLOATING HOLLOW PISTON MOVABLE WITHIN SAID HOLLOW CYLINDER PORTION OF SAID FIRST HOLLOW PISTON HAVING A HOLLOW PLUNGER STEM WITH A PLUNGER ATTACHED EXTENDING THROUGH SAID FIRST HOLLOW PISTON AND THE BOTTOM PORTION OF SAID EXTERIOR CYLINDER BODY FOR MOVEMENT INTO A BLANK MOLD, MEANS FOR RECIPROCATING SAID FIRST HOLLOW PISTON AND SAID ENCLOSED FREE FLOATING PISTON INTO SAID BLANK MOLD, MEANS ON THE UPPER HOLLOW TUBULAR EXTENSION OF SAID FIRST HOLLOW PISTON ABOVE SAID FREE FLOATING PISTON FOR ADJUSTING THE AIR PRESSURE TO CUSHION THE MOVEMENT OF SAID FREE FLOATING HOLLOW PISTON INTO THE BLANK MOLD.
References Cited (Backward Citations)
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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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |