Patent US3122215A successfully refreshed from Google Patents.
US3122215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resonant, acoustical booster with air damping
Assignee: Individual
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Filing: 1962-02-05
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Granted: 1964-02-25
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Expires: 1982-02-05
Abstract
No abstract record available.
Inventors
- 👤 Eugene E Sutton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:09
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/22; H04R1/28; H04R1/2807; H04R1/2853; H04R1/2857
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
IN SOUND REPRODUCING APPARATUS, THE COMBINATION OF: A HOLLOW MEMBER HAVING A PAIR OF SPACED OPENINGS DISPOSED ALONG PARALLEL AXES, SAID HOLLOW MEMBER ALSO HAVING A CENTRAL OPENING DISPOSED ALONG AN AXIS PARALLEL TO AND MIDWAY BETWEEN SAID PAIR OF OPENINGS; A SOUND PRODUCING MEMBRANEOUS ELEMENT WITHIN A PORTION OF SAID HOLLOW MEMBER AND ATTACHED TO SAID HOLLOW MEMBER AT SAID CENTRAL OPENING, SAID ELEMENT BEING ADAPTED TO DIRECT SOUND WAVES OUTWARDLY AND INWARDLY OF SAID CENTRAL OPENING, SAID HOLLOW MEMBER BEING A CONDUIT TO DIRECT THE INWARDLY DIRECTED SOUND WAVES THROUGH SAID PAIR OF OPENINGS, SAID HOLLOW MEMBER ALSO HAVING A SHAPE SUCH THAT ANY PORTIONS OF SAID MEMBER WHICH ARE OF THE SAME LENGTH AS THAT PORTION OF SAID MEMBER INCLUDING SAID ELEMENT ARE OF THE SAME VOLUME.
Claim 2
Dependent Claim
130 words
IN SOUND REPRODUCING APPARATUS, THE COMBINATION OF: A HOLLOW MEMBER HAVING A PAIR OF SPACED OPENINGS DISPOSED ALONG PARALLEL AXES, SAID HOLLOW MEMBER ALSO HAVING A CENTRAL OPENING DISPOSED ALONG AN AXIS PARALLEL TO AND MIDWAY BETWEEN SAID PAIR OF OPENINGS; A SOUND PRODUCING MEMBRANEOUS ELEMENT WITHIN A PORTION OF SAID HOLLOW MEMBER AND ATTACHED TO SAID HOLLOW MEMBER AT SAID CENTRAL OPENING, SAID ELEMENT BEING ADAPTED TO DIRECT SOUND WAVES OUTWARDLY AND INWARDLY OF SAID CENTRAL OPENING, SAID HOLLOW MEMBER BEING A CONDUIT TO DIRECT THE INWARDLY DIRECTED SOUND WAVES THROUGH SAID PAIR OF OPENINGS, SAID HOLLOW MEMBER ALSO HAVING A SHAPE SUCH THAT ANY PORTIONS OF SAID MEMBER WHICH ARE OF THE SAME LENGTH AS THAT PORTION OF SAID MEMBER INCLUDING SAID ELEMENT ARE OF THE SAME VOLUME.
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) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |