US3018467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resonant reactively operating variable position transducer
Assignee: Harris Transducer Corp
•
Filing: 1955-11-07
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Granted: 1962-01-23
•
Expires: 1975-11-07
Abstract
No abstract record available.
Inventors
- 👤 Wilbur T Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:28
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A MECHANICALLY RESONANT TWO-WAY-ACTING ELECTROACOUSTIC TRANSDUCER, COMPRISING AN ELONGATED CYLINDRICAL FEROMAGNETIC ARMATURE MASS, AN ELONGATED ANNULAR FERROMAGNETIC STATOR MASS SURROUNGING SAID ARMATURE MASS AND SUSBTANTIALLY COEXTENSIVE THEREWITH, ONE OF SAID MASSES INCLUDING AT EACH OF THE LONGITUDIANAL ENDS THEREOF A RADIALLY EXTENDING POLE PIECE EXTENDING INTO CLOSE CLEARANCE RELATION WITH THE OTHER OF SIAD MEMBERS, WHEREBY AN ANNULAR MAGNETIC GAP IS DEFINED AT EACH OF SAID ENDS, SO THAT A GENERALLY TOROIDAL FLUX PATH MAY BE ESTABLISHED THROUGH BOTH GAPS AND BOTH MASSES, SEPARATE NONMAGNETIC RESILIENT DISC DIAPHRAGMS REACTIVITY CONNECTING THE CORRESPONDING LONGITUDINAL ENDS OF SAID MASSES TO
Claim 2
Dependent Claim
98 words
A MECHANICALLY RESONANT TWO-WAY-ACTING ELECTROACOUSTIC TRANSDUCER, COMPRISING AN ELONGATED CYLINDRICAL FEROMAGNETIC ARMATURE MASS, AN ELONGATED ANNULAR FERROMAGNETIC STATOR MASS SURROUNGING SAID ARMATURE MASS AND SUSBTANTIALLY COEXTENSIVE THEREWITH, ONE OF SAID MASSES INCLUDING AT EACH OF THE LONGITUDIANAL ENDS THEREOF A RADIALLY EXTENDING POLE PIECE EXTENDING INTO CLOSE CLEARANCE RELATION WITH THE OTHER OF SIAD MEMBERS, WHEREBY AN ANNULAR MAGNETIC GAP IS DEFINED AT EACH OF SAID ENDS, SO THAT A GENERALLY TOROIDAL FLUX PATH MAY BE ESTABLISHED THROUGH BOTH GAPS AND BOTH MASSES, SEPARATE NONMAGNETIC RESILIENT DISC DIAPHRAGMS REACTIVITY CONNECTING THE CORRESPONDING LONGITUDINAL ENDS OF SAID MASSES TO
References Cited (Backward Citations)
US1333298A
Cited
US1582590A
Cited
US1984383A
Cited
US2271667A
Cited
US2348225A
Cited
US2410805A
Cited
US2424549A
Cited
US2740946A
Cited
US2768364A
Cited
US2776560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |