Patent US4805221A successfully refreshed from Google Patents.
US4805221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction of sound converter in sound guide, especially for loudspeakers, for example speaker boxes
Assignee: Individual
•
Filing: 1985-04-16
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Granted: 1989-02-14
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Expires: 2005-04-16
Abstract
Abstract An installation of sound converters (e.g., speakers) in an enclosure having mechanical fasteners such that the transmission of solid-borne sound from the speakers to the enclosure is prevented.
Inventors
- 👤 Jurgen Quaas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:36
CPC Classifications
H; H04; H04R; H04R3/00; H04R3/002; H04R1/00; H04R1/02; H04R1/20; H04R1/22; H04R1/227; H04R1/28; H04R1/2869; H04R1/2892; H04R1/2896; H04R1/30; H04R2209/00; H04R2209/027
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
77 words
A sound converter system comprising: a sound guide; sound converter means, mounted within said sound guide, for generating sound and dynamic forces; and mechanical connection means for connecting said sound converter means to said sound guide, for guiding some of the dynamic forces and for mechanically compensating for the guided dynamic forces by providing equal and opposite dynamic counterforces such that the transmission of solid-borne sound from the sound converter means to the sound guide is prevented.
Claim 2
Dependent Claim
77 words
A sound converter system comprising: a sound guide; sound converter means, mounted within said sound guide, for generating sound and dynamic forces; and mechanical connection means for connecting said sound converter means to said sound guide, for guiding some of the dynamic forces and for mechanically compensating for the guided dynamic forces by providing equal and opposite dynamic counterforces such that the transmission of solid-borne sound from the sound converter means to the sound guide is prevented.
Claim 3
Dependent Claim
44 words
A sound converter system according to claim 1 wherein the sound converter means includes sound converters that are mechanically, electrically, and acoustically connected with each other such that the dynamic forces exerted on said mechanical connector means by said converters compensate for each other.
Claim 4
Dependent Claim
26 words
A sound converter system according to claim 2, wherein the mechanical connection means is not a component of the sound guide or the speaker box housing.
Claim 5
Dependent Claim
17 words
A sound converter system according to claim 2 wherein the mechanical connection means has an adjustable length.
Claim 6
Dependent Claim
19 words
A sound converter system according to claim 2, wherein the mechanical connection means exhibits negligible elasticity at operating frequencies.
Claim 7
Dependent Claim
42 words
A sound converter system according to claim 2 wherein the sound converter means and the mechanical connection means form a separate unit in which the sound converter means and the mechanical connection means are matched to one another mechanically, electrically, and acoustically.
Claim 8
Dependent Claim
50 words
A sound converter system according to claim 2, wherein one of the sound converter means serves solely as a compensating sound converter means to compensate for the solid-borne sound of another one of the sound converter means serving as a radiating sound converter, and does not itself radiate any sound.
Claim 9
Dependent Claim
27 words
A sound converter system according to claim 7, wherein the compensating sound converter means comprises a movable mass, and a magnet coil for moving the movable mass.
Claim 10
Dependent Claim
29 words
A sound converter system according to claim 7, further comprising: a distortion-correcting circuit means for correcting differences between the frequency response characteristics of the radiating and compensating sound means.
Claim 11
Dependent Claim
49 words
A sound converter system according to claim 7 further comprising: measuring means for measuring movement of the radiating sound converter means and providing a signal responsive to the movement; and amplifier means for driving the compensating sound converter means in accordance with the signal provided by the measuring means.
Claim 12
Dependent Claim
23 words
A sound converter system according to claim 7, further comprising: regulating circuit means for regulating the movement of the compensating sound converter means.
Claim 13
Dependent Claim
39 words
A sound converter system according to claim 10, wherein radiating and compensating sound converter means, the measuring means and the amplifier means are integrated into a single unit which comprises a sound converter means that emits no solid-borne sound.
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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) | 1992-02-14 | 1992-08-15 | 1993-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-14 | 1996-08-15 | 1997-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-14 | 2000-08-15 | 2001-02-14 | $7700.00 | Window Closed / Lapsed |