US3193048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic resonance chamber
Assignee: Individual
•
Filing: 1962-11-08
•
Granted: 1965-07-06
•
Expires: 1982-11-08
Abstract
No abstract record available.
Inventors
- 👤 Kohler Helmut Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:01
CPC Classifications
H; H04; H04R; H04R25/00; H04R25/40; H04R25/402; H04R25/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
AN ACOUSTIC RESONANCE CHAMBER FOR MOUNTING A HEARING AND MICROPHONE, SAID CHAMBER INCLUDING A CASING ANDA AN INTERIOR WALL, SAID CASING AND WALL HAVING A PLURALITY OF OPENINGS CONNECTING THE INTERIOR OF SAID CHAMBER TO THE ATMOSPHERE, AT LEAST ONE OF SAID OPENINGS COMPRISING A TUBULAR MEMBER, SAID TUBULAR MEMBER BEING MOUNTED TO HAVE ONE END THEREOF AFFIXED TO SAID CASING TO OPEN INTO THE ATMOSPHERE AND HAVING ITS OTHER END AFFIXED TO SAID INTERIOR WALL TO OPEN INTO SAID CHAMBER, AND THE PORTION OF SAID TUBULAR MEMBER BETWEEN SAID ENDS BEING FREE WHEREBY SAID CHAMBER AND TUBULAR MEMBER PROVIDE A DISTINCT FREQUENCY RESPONSE WHICH RESPONSE MAY BE CONVENIENTLY VARIED BY CHANGING THE LENGTH AND THE INSIDE DIAMETER OF SAID TUBULAR MEMBER.
Claim 2
Dependent Claim
122 words
AN ACOUSTIC RESONANCE CHAMBER FOR MOUNTING A HEARING AND MICROPHONE, SAID CHAMBER INCLUDING A CASING ANDA AN INTERIOR WALL, SAID CASING AND WALL HAVING A PLURALITY OF OPENINGS CONNECTING THE INTERIOR OF SAID CHAMBER TO THE ATMOSPHERE, AT LEAST ONE OF SAID OPENINGS COMPRISING A TUBULAR MEMBER, SAID TUBULAR MEMBER BEING MOUNTED TO HAVE ONE END THEREOF AFFIXED TO SAID CASING TO OPEN INTO THE ATMOSPHERE AND HAVING ITS OTHER END AFFIXED TO SAID INTERIOR WALL TO OPEN INTO SAID CHAMBER, AND THE PORTION OF SAID TUBULAR MEMBER BETWEEN SAID ENDS BEING FREE WHEREBY SAID CHAMBER AND TUBULAR MEMBER PROVIDE A DISTINCT FREQUENCY RESPONSE WHICH RESPONSE MAY BE CONVENIENTLY VARIED BY CHANGING THE LENGTH AND THE INSIDE DIAMETER OF SAID TUBULAR MEMBER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |