US3222151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flake glass breakout detector and method of controlling glass breakout
Assignee: Owens Corning
•
Filing: 1961-10-16
•
Granted: 1965-12-07
•
Expires: 1981-10-16
Abstract
No abstract record available.
Inventors
- 👤 Robert Z Schreffler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:37
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/005; C03B17/00; C03B17/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
230 words
IN A METHOD OF PRODUCING GLASS FLAKES FROM A BODY OF MOLTEN GLASS BY FEEDING THE GLASS FRM THE MOLTEN BODY THROUGH AN ANNULAR-ORIFICE AND DRAWING THE MOLTEN GLASS DIRECTLY INTO A THIN-WALLED CYLINDER BY PULLING ON THE CYLINDER, THE STEPS OF MOVING THE GLASS FROM THE BODY AS A MOLTEN ANNULAR MASS THROUGH THE ANNULAR FEED ORFICE, PULLING THE GLASS DIRECTLY FROM THE MOLTEN ANNULAR MASS TO CAUSE IT TO NECK DOWN INTO A THIN-WALLED CYLINDER, BY PASSING THE CYLINDER BETWEEN A PAIR OF SEPARABLE PULL CYLINDERS SPACED FROM THE ANNULAR ORIFICE, EXPOSING THE THIN-WALLED CYLINDER TO THE AMBIENT ATMOSPHERE TO COOL AND HARDEN THE THIN-WALLED CYLINDER, FRACTURING THE THIN-WALLED CYLINER INTO FLAKES DURING PASSAGE THROUGH THE CYLINDERS, COLLECTING THE FLAKES, POSITIONING A MOVABLE SENSING DEVICE ALONGSIDE SAID THIN-WALLED CYLINDER AND IN AXIAL ALIGNMENT WITH THE PERIPHERY OF THE MOLTEN ANNULAR MASS ISSUING FROM THE ANNUAL FEED ORFICE, TO DETECT GLASS MOVING AWAY FROM SAID ANNULAR ORIFICE WITHOUT NECKING DOWN, DETECTING RUPTURE OF SAID THIN-WALLED CYLINDER BY PHYSICALLY SENSING GLASS MOVING FROM SAID MOLTEN ANNULAR MASS WITHOUT NECKING DOWN, UPON DETECTING A RUPTURE OF SAID CYLINDER, MOVING SAID PULL CYLINDERS APART AND MOVING SAID SENSING DEVICE TO AVOID CONTACT WITH SAID NON-NECKING GLASS, AND DIVERTING THE NON-NECKING GLASS AWAY FROM CONTACT WITH THE COLLECTED FLAKES, WHEREBY THE RECOVERED PRODUCT IS SEPARATED FROM THE NON-PRODUCT GLASS ISSUING FROM SAID ANNULUS.
Claim 2
Dependent Claim
233 words
IN APPARATUS FOR PRODUCING FLAKES FROM A BODY OF MOLTEN GLASS, A MELTER HAVING A FORMING ORIFICE TO PRODUCE A CYLINDER OF GLASS, A PAIR OF OPPOSED PULL CYLINDERS POSITIONED IN SPACED RELATION TO SAID FORMING ORIFICE TO ENGAGE THE GLASS CYLINDER AND PULL IT DIRECTLY AWAY FROM SAID ORIFICE, THEREBY REDUCING THE DIAMETER AND WALL THICKNESS AND THEN FRACTURE THE THIN-WALLED CYLINDER SO PRODUCED INTO FLAKES, MEANS MOUNTING SAID CYLINDERS FOR MOVEMENT BETWEEN AN OPERATING POSITION AND A RETRACTED, NON-OPERATING POSITION, COLLECTING MEANS TO COLLECT FLAKES FROM SAID CYLINDERS, MEANS FOR ACTUATING AND DEACTUATING SAID COLLECTING MEANS BETWEEN COLLECTING AND NON-COLLECTING CONDITIONS, A DETECTOR POSITIONED BETWEEN SAID FORMING ORIFICE AND SAID CYLINDERS IN OPERABLE ALIGNMENT WITH THE PERIPHERY OF SAID ORFICE AND THUS NORMALLY OUT OF DETECTING RELATION WITH THE REDUCED DIAMETER, THIN-WALLED CYLINDER, MEANS FOR MOVING SAID DETECTOR BETWEEN DETECTING AND NON-DETECTING POSITIONS, AND TIME SEQUENCE ACTUARTOR MEANS CONNECTED TO SAID DETECTOR TO RECEIVE A SIGNAL THEREFROM, TO SAID DETECTOR MOVING MEANS, TO SAID PULL CYLINDER MOVING MEANS, AND TO SAID ACTUATING MEANS FOR SAID COLLECTING MEANS, WHEREBY SAID DETECTOR WILL SENSE NON-ATTENUATED GLASS ISSUING FROM SAID ORIFICE, INDICATING A RUPTURE OF SAID THIN-WALLED CYLINDER, AND IN TURN WILL SIGNAL SAID ACTUATOR WHICH WILL IN A TME SEQUENCE RETRACT SAID DETECTOR, RETRACT SAID PULL CYLINDERS, DEACTUATE SAID COLLECTING MEANS, OR RETURN THE PULL CYLINDERS AND DETECTOR AND ACTUATE THE COLLECTING MEANS.
References Cited (Backward Citations)
US2251726A
Cited
US2339590A
Cited
US2884531A
Cited
US2780889A
Cited
US2972210A
Cited
US3035371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |