US3684052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension for loudspeaker
Assignee: Individual
•
Filing: 1971-02-08
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Granted: 1972-08-15
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Expires: 1991-02-08
Abstract
Abstract A loudspeaker in which a diaphragm is supported at its marginal edge on a frame by means of a suspension which consists of an annular, hollow member of rubber-like elastic material having a substantially circular shape in cross section, which is connected at its inside periphery to said marginal edge of the diaphragm and at its outside periphery to said frame. A method for making the annular suspension member of rubber-like elastic material which comprises continuously extruding a hollow tube having a substantially circular cross section of the rubber-like elastic material in a helical form having a predetermined diameter, and then cutting the helically extruded hollow tube to form annular suspension members successively.
Inventors
- 👤 Hiromi Sotome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:58
CPC Classifications
H; H04; H04R; H04R7/00; H04R7/16; H04R7/18; H04R7/20; H04R2231/00; H04R2231/003; H04R2307/00; H04R2307/207
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
55 words
A suspension for supporting a marginal edge of a diaphragm on a frame of a loudspeaker, comprising an annular, hollow member of elastic material having a substantially circular shape in cross section, said member being connected at its inside periphery to said marginal edge of the diaphragm and at its outside periphery to said frame.
Claim 2
Dependent Claim
55 words
A suspension for supporting a marginal edge of a diaphragm on a frame of a loudspeaker, comprising an annular, hollow member of elastic material having a substantially circular shape in cross section, said member being connected at its inside periphery to said marginal edge of the diaphragm and at its outside periphery to said frame.
Claim 3
Dependent Claim
73 words
A suspension for supporting a marginal edge of a diaphragm on a frame of a loudspeaker, comprising an annular, hollow member of elastic material having a substantially circular shape in cross section, said member being connected at its inside periphery to said marginal edge of the diaphragm, and an attaching ring of solid material fixed at its inside to an outside periphery of said annular member and at its outside to said frame.
Claim 4
Dependent Claim
73 words
A suspension for supporting a marginal edge of a diaphragm on a frame of a loudspeaker, comprising an annular, hollow member of elastic material having a substantially circular shape in cross section, said member being connected at its inside periphery to said marginal edge of the diaphragm, and an attaching ring of solid material fixed at its inside to an outside periphery of said annular member and at its outside to said frame.
Claim 5
Dependent Claim
70 words
A loudspeaker comprising a diaphragm, a frame, a voice coil supported at the rear side of said diaphragm, a magnetic circuit supported by said frame for driving said voice coil, and an annular hollow suspension member of elastic material having a circular form in cross section, said suspension member being connected at its inside periphery to a marginal edge of said diaphragm and at its outside periphery to said frame.
Claim 6
Dependent Claim
70 words
A loudspeaker comprising a diaphragm, a frame, a voice coil supported at the rear side of said diaphragm, a magnetic circuit supported by said frame for driving said voice coil, and an annular hollow suspension member of elastic material having a circular form in cross section, said suspension member being connected at its inside periphery to a marginal edge of said diaphragm and at its outside periphery to said frame.
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |