US3554315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loudspeaker
Assignee: Nippon Gakki Co Ltd
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Filing: 1969-05-12
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Granted: 1971-01-12
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Expires: 1989-05-12
Abstract
Abstract In a loudspeaker including a diaphragm, a driver unit for driving said diaphragm and a frame for supporting said diaphragm and driver unit, said frame including arms for supporting said driver unit and a flange portion integrally formed with said arms, said flange portion being formed at its inner periphery in such shape as to conform to the outer periphery of the diaphragm and at its outer periphery in such dimension and shape as to substantially fit in a cabinet to which said frame is to be fixed, whereby the loudspeaker can be mounted in the cabinet without using a baffle board.
Inventors
- 👤 Yoshio Ohashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:13
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/02; H04R1/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A loudspeaker system including a speaker housing having a rectangular opening therein, a diaphragm, a driver unit for driving said diaphragm, a tweeter, and a metal frame for supporting said diaphragm, said driver unit, and said tweeter, and mounting them in said housing, said frame having a metal flange portion of rectangular shape with a diaphragm opening therein the periphery of which is shaped to conform to the outer periphery of the diaphragm, arms for supporting said driver unit integrally formed on said flange portion about said diaphragm opening, a tweeter opening in said flange portion between said diaphragm opening and the outer edge of the frame, and the outer periphery of said flange portion having such dimensions to fit closely into said housing opening in which said frame is to be fixed to serve as a baffle board.
Claim 2
Dependent Claim
139 words
A loudspeaker system including a speaker housing having a rectangular opening therein, a diaphragm, a driver unit for driving said diaphragm, a tweeter, and a metal frame for supporting said diaphragm, said driver unit, and said tweeter, and mounting them in said housing, said frame having a metal flange portion of rectangular shape with a diaphragm opening therein the periphery of which is shaped to conform to the outer periphery of the diaphragm, arms for supporting said driver unit integrally formed on said flange portion about said diaphragm opening, a tweeter opening in said flange portion between said diaphragm opening and the outer edge of the frame, and the outer periphery of said flange portion having such dimensions to fit closely into said housing opening in which said frame is to be fixed to serve as a baffle board.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |