US3348936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic molten glass level control apparatus
Assignee: Corning Glass Works
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Filing: 1963-08-29
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Granted: 1967-10-24
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Expires: 1983-08-29
Abstract
No abstract record available.
Inventors
- 👤 Forest P Clark
- 👤 Jr Robert T Gladwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:11
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/24; C03B5/245; C03B3/00; G; G05; G05D; G05D9/00; G05D9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
AN APPARATUS FOR CONTROLLING THE LEVEL OF MOLTEN MATERIAL IN A CONTAINER COMPRISING (A) A FLOAT TYPE LEVEL SENSING MEMEBER, (B) MEANS FOR CAUSING THE LEVEL SENSING PORTION OF SAID MEMBER TO LOWER TOWARD THE SURFACE OF SAID MOLTLEN MATERIAL AT PERIODIC INATEVALS IN ACCORDANCE WITH A PREDETERMINED SCHEDULE, (C) RAW MATERIAL FEEDING MEANS, (D) MEANS OPERATIVELY ASSOCIATED WITH SAID MEMBER AND RESPONSIVE SOLELY THERETO FOR PROVIDING A SOURCE OF ELECTRICAL ENERGY TO SAID RAW MATERIAL FEEDING MEANS WHEN SAID SENSING PORTION LOWERS TO A PREDETERMINED LEVEL WHEREBY A PREDETERMINTED AMOUNT OF RAW MATERIAL IS FED BY SAID FEEDING MEANS TO SAID CONTAINTER TO RAISE THE LEVEL OF SAID MOLTEN MATERIAL.
Claim 2
Independent Claim
111 words
AN APPARATUS FOR CONTROLLING THE LEVEL OF MOLTEN MATERIAL IN A CONTAINER COMPRISING (A) A FLOAT TYPE LEVEL SENSING MEMEBER, (B) MEANS FOR CAUSING THE LEVEL SENSING PORTION OF SAID MEMBER TO LOWER TOWARD THE SURFACE OF SAID MOLTLEN MATERIAL AT PERIODIC INATEVALS IN ACCORDANCE WITH A PREDETERMINED SCHEDULE, (C) RAW MATERIAL FEEDING MEANS, (D) MEANS OPERATIVELY ASSOCIATED WITH SAID MEMBER AND RESPONSIVE SOLELY THERETO FOR PROVIDING A SOURCE OF ELECTRICAL ENERGY TO SAID RAW MATERIAL FEEDING MEANS WHEN SAID SENSING PORTION LOWERS TO A PREDETERMINED LEVEL WHEREBY A PREDETERMINTED AMOUNT OF RAW MATERIAL IS FED BY SAID FEEDING MEANS TO SAID CONTAINTER TO RAISE THE LEVEL OF SAID MOLTEN MATERIAL.
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |