US4097862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic warning device, in particular a bell
Assignee: Legrand SA
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Filing: 1976-12-23
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Granted: 1978-06-27
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Expires: 1996-12-23
Abstract
Abstract An acoustic warning device of the type comprising a striker member which is also the movable core member of a control solenoid. A radially polarized permanent magnet is disposed at one end of the solenoid, e.g. opposite a gong therefor, and a spring defines with the permanent magnet a rest position of the core/striker member. The end of the core/striker member proximate to the permanent magnet is limited in its outward displacements within the axial extent of the permanent magnet means. The flux through the solenoid is carried mainly by the core member. The alternating polarization of the core/striker member ends is alternately attracted and repelled by the magnetic flux of the permanent magnet which is the equivalent of an imaginary axially polarized magnet in the passage through the solenoid.
Inventors
- 👤 Yves Brionne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:01
CPC Classifications
G; G10; G10K; G10K1/00; G10K1/06; G10K1/062; G10K1/063; G10K1/064
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
108 words
An acoustic warning device comprising, a striker member forming a movable core of a control solenoid and arranged to strike resonator means in response to energization of said solenoid, permanent magnet means adapted to define in cooperation with retaining means a rest position for the striker member, said permanent magnet means being in coaxial alignment with the solenoid and disposed beyond one end of said solenoid, said permanent magnet means having radial pole lines with the same polar orientation, one end of said movable core proximate to said permanent magnet means extending only partly into the axial zone corresponding to the axial extent of said permanent magnet means.
Claim 2
Dependent Claim
108 words
An acoustic warning device comprising, a striker member forming a movable core of a control solenoid and arranged to strike resonator means in response to energization of said solenoid, permanent magnet means adapted to define in cooperation with retaining means a rest position for the striker member, said permanent magnet means being in coaxial alignment with the solenoid and disposed beyond one end of said solenoid, said permanent magnet means having radial pole lines with the same polar orientation, one end of said movable core proximate to said permanent magnet means extending only partly into the axial zone corresponding to the axial extent of said permanent magnet means.
Claim 3
Dependent Claim
120 words
An acoustic warning device comprising a resonator, a striker member forming a movable core of a control solenoid and arranged to strike the resonator in response to energization of said solenoid, permanent magnet means adapted to define in cooperation with retaining means a rest position for the striker member, said permanent magnet means being disposed beyond one end of said solenoid with their axes in alignment, said permanent magnet means having radial pole lines with the same polar orientation, said permanent magnet means in cooperation with said retaining means limiting axial outermost displacements of an end of said movable core proximate to said permanent magnet means within the axial zone corresponding to the axial extent of said permanent magnet means.
Claim 4
Dependent Claim
120 words
An acoustic warning device comprising a resonator, a striker member forming a movable core of a control solenoid and arranged to strike the resonator in response to energization of said solenoid, permanent magnet means adapted to define in cooperation with retaining means a rest position for the striker member, said permanent magnet means being disposed beyond one end of said solenoid with their axes in alignment, said permanent magnet means having radial pole lines with the same polar orientation, said permanent magnet means in cooperation with said retaining means limiting axial outermost displacements of an end of said movable core proximate to said permanent magnet means within the axial zone corresponding to the axial extent of said permanent magnet means.
Claim 5
Dependent Claim
108 words
An acoustic warning device comprising a resonator, a striker member forming a movable core of a control solenoid and arranged to strike the resonator in response to energization of said solenoid, permanent magnet means adapted to define in cooperation with retaining means a rest position for the striker member, said permanent magnet means being disposed beyond an end of said solenoid with the axes of said permanent magnet means and said solenoid substantially in alignment, said permanent magnet means having radial pole lines with the same polar orientation, support structure for said solenoid and said permanent magnet means in their immediate proximity being substantially entirely of nonferromagnetic material.
Claim 6
Dependent Claim
108 words
An acoustic warning device comprising a resonator, a striker member forming a movable core of a control solenoid and arranged to strike the resonator in response to energization of said solenoid, permanent magnet means adapted to define in cooperation with retaining means a rest position for the striker member, said permanent magnet means being disposed beyond an end of said solenoid with the axes of said permanent magnet means and said solenoid substantially in alignment, said permanent magnet means having radial pole lines with the same polar orientation, support structure for said solenoid and said permanent magnet means in their immediate proximity being substantially entirely of nonferromagnetic material.
Claim 7
Dependent Claim
98 words
An acoustic warning device comprising resonator means, a striker member forming a movable core of a control solenoid and arranged to strike the resonator means in response to energization of said solenoid, permanent magnet means adapted to define in cooperation with retaining means a rest position for the striker member, said permanent magnet means being disposed beyond one end of said solenoid with their axes generally in alignment, said permanent magnet means having radial pole lines all with the same polar orientation, the core member defining the main path of magnet flux through the interior of said solenoid.
Claim 8
Dependent Claim
98 words
An acoustic warning device comprising resonator means, a striker member forming a movable core of a control solenoid and arranged to strike the resonator means in response to energization of said solenoid, permanent magnet means adapted to define in cooperation with retaining means a rest position for the striker member, said permanent magnet means being disposed beyond one end of said solenoid with their axes generally in alignment, said permanent magnet means having radial pole lines all with the same polar orientation, the core member defining the main path of magnet flux through the interior of said solenoid.
Claim 9
Dependent Claim
33 words
A device according to claim 4, wherein said permanent magnet means comprises a plurality of regularly spaced permanent magnets around the continuation of the axis of said solenoid through said permanent magnet means.
Claim 10
Dependent Claim
30 words
A device according to claim 5, wherein said permanent magnet means comprises a single annular permanent magnet with its axis coinciding with the continuation of the axis of said solenoid.
Claim 11
Dependent Claim
28 words
A device according to claim 4, wherein a passage for said core member is defined inside said permanent magnet means in continuation with the interior of said solenoid.
Claim 12
Dependent Claim
43 words
A device according to claim 4, wherein said solenoid having a spool including a hollow axial barrel on which it is wound and a transverse end plate, further comprising a cap cooperable with said transverse end plate for housing said permanent magnet means.
Claim 13
Dependent Claim
30 words
A device according to claim 8, wherein said permanent magnet means is partly engaged in a recess in a surface of said transverse end plate facing away from said solenoid.
Claim 14
Dependent Claim
25 words
A device according to claim 8, wherein said permanent magnet means is partly engaged in a recess provided in an end surface of said cap.
Claim 15
Dependent Claim
19 words
A device according to claim 8, wherein said cap has means for clipping it onto said transverse end plate.
Claim 16
Dependent Claim
33 words
A device according to claim 11, wherein said clipping means comprises at least two axially extending, resiliently deformable clipping hooks cooperable with retaining shoulders disposed at the periphery of said transverse end plate.
Claim 17
Dependent Claim
19 words
A device according to claim 8, further comprising means for rigidly connecting said cap to said transverse end plate.
Claim 18
Dependent Claim
24 words
A device according to claim 8, wherein said hollow barrel has an axially projecting tubular extension around which said permanent magnet means is disposed.
Claim 19
Dependent Claim
14 words
A device according to claim 14, wherein said tubular extension passes through said cap.
Claim 20
Dependent Claim
35 words
A device according to claim 15, wherein said retaining means comprises a spring member bearing at one end against said core member and at the other end against a closed end of said tubular extension.
Claim 21
Dependent Claim
43 words
A device according to claim 7, wherein said solenoid has a spool including a hollow axial barrel on which it is wound and a transverse end plate, said end plate carrying two electrical connecting members connected to respective electrical ends of the solenoid.
Claim 22
Dependent Claim
32 words
A device according to claim 7, further comprising blocks on said transverse end plate for accommodating said connecting members, said connecting members having resilient tongues for retaining them in their respective blocks.
Claim 23
Dependent Claim
42 words
A device according to claim 8, further comprising a casing for said solenoid, means for fixing said resonator means to said casing, wherein said spool and cap form an assembly having axial tubular extensions in engagement with complementary passages in said casing.
Claim 24
Dependent Claim
25 words
A device according to claim 19, further comprising means on one of said tubular extensions for preventing rotation of said assembly relative to said casing.
Claim 25
Dependent Claim
37 words
A device according to claim 20, wherein said retaining means is a spring member bearing at one end against said core member and at its other end against an apertured end wall of a corresponding tubular extension.
Claim 26
Dependent Claim
80 words
A device according to claim 19, further comprising a mounting plate to which said casing is adapted to be secured, said mounting plate carrying electrical connecting members cooperable with electrical connecting members on a transverse end plate at the other end of said spool, said electrical connecting members carried on said mounting plate formed as bars extending parallel to the axis of the solenoid to enable axial adjustment of solenoid without having to adjust the position of the connecting members.
Claim 27
Dependent Claim
22 words
A device according to claim 22, wherein said spool and said cap form an assembly which is axially adjustable in said casing.
Claim 28
Dependent Claim
25 words
A device according to claim 19, wherein said casing has plural knock-out sections for providing passages to accommodate different sized resonator means on said casing.
Claim 29
Dependent Claim
134 words
An acoustic warning device comprising a striker member forming a movable core member of a control solenoid and arranged to strike resonator means in response to energization of said solenoid, permanent magnet means adapted to define in conjunction with retaining means a rest position for said striker member, said permanent magnet means being disposed beyond one end of said solenoid with their axes generally in alignment, said permanent magnet means being radially polarized, a passageway extending through said solenoid and said permanent magnet means and defined by a nonferromagnetic tubular member extending through at least said solenoid means, whereby said core member is reciprocated by the repulsion and attraction effect produced by the permanent magnet means on the end of said core member which is of alternating polarity proximate to said permanent magnet means.
Claim 30
Dependent Claim
134 words
An acoustic warning device comprising a striker member forming a movable core member of a control solenoid and arranged to strike resonator means in response to energization of said solenoid, permanent magnet means adapted to define in conjunction with retaining means a rest position for said striker member, said permanent magnet means being disposed beyond one end of said solenoid with their axes generally in alignment, said permanent magnet means being radially polarized, a passageway extending through said solenoid and said permanent magnet means and defined by a nonferromagnetic tubular member extending through at least said solenoid means, whereby said core member is reciprocated by the repulsion and attraction effect produced by the permanent magnet means on the end of said core member which is of alternating polarity proximate to said permanent magnet means.
Claim 31
Dependent Claim
123 words
An acoustic warning device comprising a control solenoid having a movable core disposed along its axis and defining a striker member, arranged to strike resonator means disposed at one end of said solenoid, in response to energization of said solenoid, permanent magnet means disposed at the other of said solenoid, spring means tending to urge said core member towards said resonator means, said permanent magnet means defining with said spring means a position of said other end of said core member proximate to said permanent magnet means substantially within the axial confines thereof, said permanent magnet means repulsing and attracting said other end of said core member due to the alternating polarity thereof so that said striker member alternately strikes said resonator means.
Claim 32
Dependent Claim
123 words
An acoustic warning device comprising a control solenoid having a movable core disposed along its axis and defining a striker member, arranged to strike resonator means disposed at one end of said solenoid, in response to energization of said solenoid, permanent magnet means disposed at the other of said solenoid, spring means tending to urge said core member towards said resonator means, said permanent magnet means defining with said spring means a position of said other end of said core member proximate to said permanent magnet means substantially within the axial confines thereof, said permanent magnet means repulsing and attracting said other end of said core member due to the alternating polarity thereof so that said striker member alternately strikes said resonator means.
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) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |