US3329236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speaker neclosure
Assignee: Individual
•
Filing: 1966-06-03
•
Granted: 1967-07-04
•
Expires: 1986-06-03
Abstract
No abstract record available.
Inventors
- 👤 Arden David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:22
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/20; H04R1/22; H04R1/28; H04R1/2807; H04R1/2811
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A SPEAKER ENCLOSURE, COMPRISING: A BOX-LIKE STRUCTURE HAVING A FRONT PANEL AND SIDE PANELS; AN UPPER PANEL AND A LOWER PANEL FIXED TRANSVERSELY IN SPACED RELATION IN SAID STRUCTURE AND ENCLOSING A CHAMBER THEREBETWEEN; SAID UPPER PANEL HAVING A SPEAKER OPENING THEREIN; SAID FRONT AND SIDE PANELS EXTENDING BEYOND SAID UPPER PANEL AND FORMING A SOUND REFLECTING BAFFLE; PRESSURE RELIEVING MEANS IN SAID ENCLOSURE COMPRISING AN OPENING IN SAID LOWER PANEL, A SPIRAL SPRING SECURED TO SAID LOWER PANEL CO-AXIALLY OF SAID OPENING, AND A PLUG CARRIED BY SAID SPRING FOR LIMITED AXIAL MOTION WITHIN SAID OPENING IN RESPONSE TO VARIATION OF PRESSURE WITHIN SAID CHAMBER.
Claim 2
Dependent Claim
106 words
A SPEAKER ENCLOSURE, COMPRISING: A BOX-LIKE STRUCTURE HAVING A FRONT PANEL AND SIDE PANELS; AN UPPER PANEL AND A LOWER PANEL FIXED TRANSVERSELY IN SPACED RELATION IN SAID STRUCTURE AND ENCLOSING A CHAMBER THEREBETWEEN; SAID UPPER PANEL HAVING A SPEAKER OPENING THEREIN; SAID FRONT AND SIDE PANELS EXTENDING BEYOND SAID UPPER PANEL AND FORMING A SOUND REFLECTING BAFFLE; PRESSURE RELIEVING MEANS IN SAID ENCLOSURE COMPRISING AN OPENING IN SAID LOWER PANEL, A SPIRAL SPRING SECURED TO SAID LOWER PANEL CO-AXIALLY OF SAID OPENING, AND A PLUG CARRIED BY SAID SPRING FOR LIMITED AXIAL MOTION WITHIN SAID OPENING IN RESPONSE TO VARIATION OF PRESSURE WITHIN SAID CHAMBER.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |