Patent US3859480A successfully refreshed from Google Patents.
US3859480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loudspeaker and attachment fitting
Assignee: Blaupunkt Werke GmbH
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Filing: 1973-06-06
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Granted: 1975-01-07
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Expires: 1993-06-06
Abstract
Abstract To secure a loudspeaker in the sound opening of a sound board, particularly when the loudspeaker must be mounted from locations accessible only with difficulty, for example in automobile receivers, a bowed thin springy sheet metal diaphragm is formed with projecting clips, projecting from the rearwardly bowed, that is, convexly bowed surface to be engaged by the loudspeaker, and with hook-like projections, projecting from the concavely bowed surface, to permit slipping one hook into the edge of the sound opening of the sound board, hooking the speaker into the clip, and then flattening the bowed diaphragm against spring pressure until the second hook engages around another side of the sound opening, of the sound board, the loudspeaker being then snapped in holding position on the diaphragm strip by another clip; the first clip can be replaced by deformable holding flaps or the like.
Inventors
- 👤 Udo Birkner
- 👤 Gunter Fritsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:00
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/02; H04R1/025
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
258 words
A fitting to secure a loudspeaker (6) to a sound board (7) formed with a sound opening (8), comprising a sheet (2) of thin, springy sheet material which, in unstressed state, is bowed, and when stressed and flattened has an outline extending at least in part to the outline of the cage of the loudspeaker, the sheet having a sound opening zone similar to the sound opening of the sound board; means securing said sheet (2) to two opposed lateral sides of the loudspeaker (6) including at least one outer spring clip (3) projecting away from the convex surface of the bowed sheet and at the side of the sheet which extends parallel to the bend axis of the bowed sheet; and means to attach said sheet (2) to the sound board (7) including at least one inner hook (4) projecting away from the concave surface of the bowed sheet at the sound opening zone and located nearest to said side of the sheet which extends parallel to the bend axis of the bowed sheet, the hook (4) being bent over said sheet and away from said sound zone to permit fitting of the bowed sheet, with the concave surface against the sound board (7) and engagement of the hook through the sound opening (8) of the sound board (7) and over the edge (9) thereof and upon stretching and flattening of the sheet by contact of the convex surface with the loudspeaker cage, engagement of the edge of the cage of the loudspeaker with the clip (3).
Claim 2
Dependent Claim
258 words
A fitting to secure a loudspeaker (6) to a sound board (7) formed with a sound opening (8), comprising a sheet (2) of thin, springy sheet material which, in unstressed state, is bowed, and when stressed and flattened has an outline extending at least in part to the outline of the cage of the loudspeaker, the sheet having a sound opening zone similar to the sound opening of the sound board; means securing said sheet (2) to two opposed lateral sides of the loudspeaker (6) including at least one outer spring clip (3) projecting away from the convex surface of the bowed sheet and at the side of the sheet which extends parallel to the bend axis of the bowed sheet; and means to attach said sheet (2) to the sound board (7) including at least one inner hook (4) projecting away from the concave surface of the bowed sheet at the sound opening zone and located nearest to said side of the sheet which extends parallel to the bend axis of the bowed sheet, the hook (4) being bent over said sheet and away from said sound zone to permit fitting of the bowed sheet, with the concave surface against the sound board (7) and engagement of the hook through the sound opening (8) of the sound board (7) and over the edge (9) thereof and upon stretching and flattening of the sheet by contact of the convex surface with the loudspeaker cage, engagement of the edge of the cage of the loudspeaker with the clip (3).
Claim 3
Dependent Claim
24 words
A fitting according to claim 1, wherein at least two spring clips (3) are provided, one each located at opposite sides of the sheet.
Claim 4
Dependent Claim
26 words
A fitting according to claim 1, wherein the sheet is generally rectangular and wherein the clip (3) is located at a marginal edge of the sheet.
Claim 5
Dependent Claim
33 words
A fitting according to claim 1, wherein the sheet (2) is formed with locating projections (5) fitting matching holes (14) in the loudspeaker cage to locate the speaker in position on the sheet.
Claim 6
Dependent Claim
38 words
A fitting according to claim 1, wherein the sheet is formed with gripping means (13) projecting from the convex surface of the sheet and located to engage the loudspeaker cage (15) through holes (14) formed in the cage.
Claim 7
Dependent Claim
15 words
A fitting according to claim 5, wherein the gripping means (13) comprises deformable projecting flaps.
Claim 8
Dependent Claim
50 words
A fitting according to claim 5, wherein the convex surface of the sheet has one clip (3) located at one side thereof and the gripping means are located at opposite sides thereof; and two hooks (4) are located at opposite sides, and projecting from the concave surface of the sheet.
Claim 9
Dependent Claim
51 words
A fitting according to claim 1, wherein the clip has a first spring portion extending from the side of the sheet towards the sound zone thereof, and a second end portion reversely bent with respect to the spring portion to permit snap catch engagement of the loudspeaker cage with the clip.
Claim 10
Dependent Claim
52 words
A fitting according to claim 1, wherein at least two hooks (4) are provided, one each located at opposite sides of the sound zone and having end portions extending away from each other and spaced from the sheet when the sheet is flattened, by about the thickness of the sound board (7).
Claim 11
Dependent Claim
29 words
A fitting according to claim 1, wherein the clip or clips and the hook or hooks are bent-away portions shaped from the material of the sheet and unitary therewith.
Claim 12
Dependent Claim
175 words
A loudspeaker having a speaker cage, being formed with an edge rim and an attachment fitting to attach the loudspeaker to a sound board having a sound opening comprising the combination of a stressed, substantially flat strip of spring material which, when unstressed, is convexly bowed towards the speaker cage, said flat strip lying flat against the speaker cage; means projecting from the surface facing the loudspeaker on the flat strip to secure the flat spring material strip to the cage at one side thereof; a resilient spring clip, projecting from the surface facing the loudspeaker on said strip to resiliently engage over the edge of the speaker cage at the other side thereof, said means and spring clip being located at opposite sides of the axis about which the strip bows when unstressed; and at least two hooks projecting from the surface which is concavely bowed when the spring is unstressed, the hooks having end portions facing away from said axis and engaging around the edge of the sound opening of the sound board.
Claim 13
Dependent Claim
175 words
A loudspeaker having a speaker cage, being formed with an edge rim and an attachment fitting to attach the loudspeaker to a sound board having a sound opening comprising the combination of a stressed, substantially flat strip of spring material which, when unstressed, is convexly bowed towards the speaker cage, said flat strip lying flat against the speaker cage; means projecting from the surface facing the loudspeaker on the flat strip to secure the flat spring material strip to the cage at one side thereof; a resilient spring clip, projecting from the surface facing the loudspeaker on said strip to resiliently engage over the edge of the speaker cage at the other side thereof, said means and spring clip being located at opposite sides of the axis about which the strip bows when unstressed; and at least two hooks projecting from the surface which is concavely bowed when the spring is unstressed, the hooks having end portions facing away from said axis and engaging around the edge of the sound opening of the sound board.
Claim 14
Dependent Claim
12 words
Combination according to claim 11, wherein said securing means comprises another clip.
Claim 15
Dependent Claim
37 words
Combination according to claim 11, wherein said cage has attachment holes and said securing means comprises deformable flaps extending through said holes and being deformed to hold the loudspeaker and the strip together and in aligned position.
References Cited (Backward Citations)
US3159234A
Cited
US3339960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |