US4518826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vandal-proof communication system
Assignee: MOUNTAIN SYSTEMS Inc A NEW MEXICO CORP
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Filing: 1982-12-22
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Granted: 1985-05-21
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Expires: 2002-12-22
Abstract
Abstract A touch switch and monitor lamp associated with an intercom station are embedded in a protective wall mounted plate with exposed ends flush with the planar surface of the plate which has openings through which sound is transmitted to or from a folded horn of a transducer having its driver unit spaced rearwardly of the plate and laterally of the openings.
Inventors
- 👤 Eddie T. Caudill
- 👤 Richard T. CAUDILL
- 👤 Lyle N. Conley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:24
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/0291
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
141 words
In a mounting assembly for an intercom station having separate and spaced switch, lamp and transducer devices associated therewith, the mounting assembly including a common protective plate supporting all of said devices on a wall, said plate having an exposed surface through which sound transmitting openings extend in operative alignment with the transducer device, the improvement residing in means for rendering the station vandal-resistant, comprising means for embedding the switch and lamp devices in the protective plate, said transducer device having a driver unit and an exponential horn, said horn having a small input end connected to the driver unit and a large output end, and means mounting the horn rearwardly on the plate with the output end thereof in alignment with the sound transmitting openings for spacing the input end of the horn in lateral, non-overlapping relation to said openings.
Claim 2
Dependent Claim
141 words
In a mounting assembly for an intercom station having separate and spaced switch, lamp and transducer devices associated therewith, the mounting assembly including a common protective plate supporting all of said devices on a wall, said plate having an exposed surface through which sound transmitting openings extend in operative alignment with the transducer device, the improvement residing in means for rendering the station vandal-resistant, comprising means for embedding the switch and lamp devices in the protective plate, said transducer device having a driver unit and an exponential horn, said horn having a small input end connected to the driver unit and a large output end, and means mounting the horn rearwardly on the plate with the output end thereof in alignment with the sound transmitting openings for spacing the input end of the horn in lateral, non-overlapping relation to said openings.
Claim 3
Dependent Claim
148 words
In a mounting assembly for an intercom station having separate and spaced switch, lamp and transducer devices associated therewith, the mounting assembly including a common protective plate supporting all of said devices on a wall, said plate having an exposed surface through which sound transmitting openings extend in operative alignment with the transducer device, the improvement residing in means for rendering the station vandal-resistant, comprising means for embedding the switch and lamp devices in the protective plate flush with the exposed surface thereof, said transducer device having a driver unit and a horn interconnected therewith, and means mounting the horn rearwardly on the plate in alignment with the sound transmitting openings for spacing the driver unit laterally of said openings, the horn comprising exponential column means having a small passage end connected to the driver unit and a large open end in alignment with said sound transmitting openings.
Claim 4
Dependent Claim
148 words
In a mounting assembly for an intercom station having separate and spaced switch, lamp and transducer devices associated therewith, the mounting assembly including a common protective plate supporting all of said devices on a wall, said plate having an exposed surface through which sound transmitting openings extend in operative alignment with the transducer device, the improvement residing in means for rendering the station vandal-resistant, comprising means for embedding the switch and lamp devices in the protective plate flush with the exposed surface thereof, said transducer device having a driver unit and a horn interconnected therewith, and means mounting the horn rearwardly on the plate in alignment with the sound transmitting openings for spacing the driver unit laterally of said openings, the horn comprising exponential column means having a small passage end connected to the driver unit and a large open end in alignment with said sound transmitting openings.
Claim 5
Dependent Claim
65 words
The improvement as defined in claim 2 wherein the embedding means for each of the switch and lamp devices includes a non-conductive, tubular member having an exposed end flush with the exposed surface of the plate and an opposite head end abutting the plate in spaced relation to the exposed surface, the tubular member of the embedding means for the lamp device being light transmissive.
Claim 6
Dependent Claim
37 words
The improvement as defined in claim 3 wherein the mounting means includes a liner connected to the horn at said open end thereof and fastener means projecting rearwardly from the plate for adjustably securing the liner thereto.
Claim 7
Dependent Claim
37 words
The improvement as defined in claim 2 wherein the mounting means includes a liner connected to the horn at said open end thereof and fastener means projecting rearwardly from the plate for adjustably securing the liner thereto.
Claim 8
Dependent Claim
108 words
In a vandal-resistant mounting assembly for an intercom station having separate and spaced switch, lamp and transducer devices associated therewith, the mounting assembly including a common protective plate supporting all of said devices on a wall, said plate having an exposed surface through which sound transmitting openings extend in operative alignment with the transducer device, the improvement residing in said transducer device comprising a driver unit and an exponential horn connected to the driver unit, said horn being folded at four 90° turns and means mounting the horn rearwardly on the plate in alignment with the sound transmitting openings for spacing the driver unit laterally of said openings.
Claim 9
Dependent Claim
108 words
In a vandal-resistant mounting assembly for an intercom station having separate and spaced switch, lamp and transducer devices associated therewith, the mounting assembly including a common protective plate supporting all of said devices on a wall, said plate having an exposed surface through which sound transmitting openings extend in operative alignment with the transducer device, the improvement residing in said transducer device comprising a driver unit and an exponential horn connected to the driver unit, said horn being folded at four 90° turns and means mounting the horn rearwardly on the plate in alignment with the sound transmitting openings for spacing the driver unit laterally of said openings.
Claim 10
Dependent Claim
32 words
The improvement as defined in claim 6 wherein the mounting means includes a liner connected to the horn and fastener means projecting rearwardly from the plate for adjustably securing the liner thereto.
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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) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |