US3240054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ice detector
Assignee: GABB SPECIAL PRODUCTS Inc
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Filing: 1962-12-24
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Granted: 1966-03-15
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Expires: 1982-12-24
Abstract
No abstract record available.
Inventors
- 👤 Roth Wilfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:54
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/02; G01N29/036; G01M; G01M3/00; G01M3/38; G08; G08B; G08B19/00; G08B19/02; G01N2291/00; G01N2291/02; G01N2291/025; G01N2291/0251; G01N2291/0256
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A ICE DETECTOR WHICH COMPRISES (A) A TRANSDUCER INCLUDING AN ELASTICALLY VIBRATORY RESONANT MEMBER HAVING AN ELASTICALLY VIBRATORY RESONANT FREQUENCY DETERMINED IN SUBSTANTIAL PART BY THE STIFFNESS THEREOF, (B) SAID MEMBER BEING EXPOSED TO THE ACCRETION OF ICE THEREON WHEREBY THE STIFFNESS OF AN ACCRETED LAYER OF ICE INCREASES SAID RESONANT FREQUENCY OF THE MEMBER, (C) A SECOND REFERENCE TRANSDUCER SIMILAR TO THE FIRSTMENTIONED TRANSDUCER AND PROTECTED FROM THE ACCRETION OF ICE ON THE ELASTICALLY VIBRATORY MEMBER THEREOF, (D) MEANS FOR ENERGIZING SAID TRANSDUCERS FROM A COMMON SOURCE OF ALTERNATING CURRENT IN THE REGION OF THE ELASTICALLY VIBRATORY RESONANT FREQUENCY THEREOF, (E) THE ACCRETION OF ICE ON THE EXPOSED TRANSDUCER SHIFTING THE RESONANT CHARACTERISTIC THEREOF WITH RESPECT TO THE FREQUENCY OF SAID ALTERNATING CURRENT SOURCE, (F) AND MEANS FOR DETERMINING CHANGES IN THE RELATIVE PHASE OF SAID TRANSDUCERS AND THE DIRECTION THEREOF.
Claim 2
Dependent Claim
142 words
A ICE DETECTOR WHICH COMPRISES (A) A TRANSDUCER INCLUDING AN ELASTICALLY VIBRATORY RESONANT MEMBER HAVING AN ELASTICALLY VIBRATORY RESONANT FREQUENCY DETERMINED IN SUBSTANTIAL PART BY THE STIFFNESS THEREOF, (B) SAID MEMBER BEING EXPOSED TO THE ACCRETION OF ICE THEREON WHEREBY THE STIFFNESS OF AN ACCRETED LAYER OF ICE INCREASES SAID RESONANT FREQUENCY OF THE MEMBER, (C) A SECOND REFERENCE TRANSDUCER SIMILAR TO THE FIRSTMENTIONED TRANSDUCER AND PROTECTED FROM THE ACCRETION OF ICE ON THE ELASTICALLY VIBRATORY MEMBER THEREOF, (D) MEANS FOR ENERGIZING SAID TRANSDUCERS FROM A COMMON SOURCE OF ALTERNATING CURRENT IN THE REGION OF THE ELASTICALLY VIBRATORY RESONANT FREQUENCY THEREOF, (E) THE ACCRETION OF ICE ON THE EXPOSED TRANSDUCER SHIFTING THE RESONANT CHARACTERISTIC THEREOF WITH RESPECT TO THE FREQUENCY OF SAID ALTERNATING CURRENT SOURCE, (F) AND MEANS FOR DETERMINING CHANGES IN THE RELATIVE PHASE OF SAID TRANSDUCERS AND THE DIRECTION THEREOF.
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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |