Patent US3179932A successfully refreshed from Google Patents.
US3179932A
Expired / Lapsed
US
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Electric sounding device
Assignee: Individual
•
Filing: 1962-02-05
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Granted: 1965-04-20
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Expires: 1982-02-05
Abstract
No abstract record available.
Inventors
- 👤 Robert N Gregoroff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:31
CPC Classifications
G; G10; G10K; G10K9/00; G10K9/12; G10K9/13
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
AN ELECTROMAGNETICALLY OPERATED HORN COMPRISING: (A) A CUP-SHAPED CASING HAVING AN OPEN END DEFINED BY AN OUTWARDLY EXTENDING RADIAL FLANGE TERMINATING IN AN AXIAL RIM, (B) A DIAPHRAGM IN THE OPEN END OF SAID CASING, (C) A DIAPHRAGM RETAINING RING ON SAID CASING IN ENGAGEMENT WITH SAID RIM TO PROVIDE AXIAL CLEARANCE FOR THE PERIPHERAL EDGES OF SAID DIAPHRAGM TO ALLOW A PREDETERMINED FREE AXIAL MOVEMENT OF SAID DIAPHRAGM, AND (D) ELECTROMAGNETIC MEANS IN SAID CASING TO VIBRATE SAID DIAPHRAGM AND CAUSE ITS SAID PERIPHERAL EDGES TO STRIKE SAID FLANGE AND SAID RING.
References Cited (Backward Citations)
US1206988A
Cited
US3041601A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |