US4334260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall-type intercom station for detention and penitentiary facilities
Assignee: Individual
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Filing: 1980-06-17
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Granted: 1982-06-08
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Expires: 2000-06-17
Abstract
Abstract A wall-type intercom station for detention and penitentiary facilities is disclosed. The station is comprised of a flush mounting box (2') which is formed of a plurality of profile elements (21, 24, 25) that are structured as extruded profiles. The profile (21) is generally C-shaped and forms a bottom wall, top wall, and back wall of the box (2'). Profiles (24, 25) form side walls of the box (2'). A ring (26) is received about the perimeter of the profiles (21, 24, 25) and is received within slots (40, 42, 44, 46) formed along the front edge of the profile elements. Pushbutton switches (15) and lights (16) are secured to a cover plate (5) within jar-like containers filled with pressed glass (31).
Inventors
- 👤 Ernst A. Schmelter
- 👤 Bruno W. Simmert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:43
CPC Classifications
H; H02; H02B; H02B1/00; H02B1/26; H02B1/40; H02B1/42
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
85 words
In a wall-type intercom station in a communications and reporting system for detection and penetentiary facilities, with a flush mounting box, a cover plate with sound penetration openings covering the box, sensor pushbutton switches arranged in the cover plate as well as fastening screws attaching the cover plate to the flush mounting box, the improvement comprising the flush mounting box forming profile elements and a front ring being installed in slots of the profile elements, whose front close-off edges are flush with the cover plate.
Claim 2
Dependent Claim
85 words
In a wall-type intercom station in a communications and reporting system for detection and penetentiary facilities, with a flush mounting box, a cover plate with sound penetration openings covering the box, sensor pushbutton switches arranged in the cover plate as well as fastening screws attaching the cover plate to the flush mounting box, the improvement comprising the flush mounting box forming profile elements and a front ring being installed in slots of the profile elements, whose front close-off edges are flush with the cover plate.
Claim 3
Dependent Claim
41 words
In a wall-type intercom station according to claim 1, wherein one of said profile elements is a C-shaped extruded profile for forming the body of the box and the other of said profile elements for lateral profiles for forming side walls.
Claim 4
Dependent Claim
31 words
In a wall-type intercom station according to claim 2, wherein C-slots are formed in the floor of the body of the box and open inwardly toward the body of the box.
Claim 5
Dependent Claim
30 words
In a wall-type intercom station according to claim 1 or 2, jar-like containers cast with pressed glass in the cover plate which receive indicator lights and the sensor pushbutton switches.
Claim 6
Dependent Claim
32 words
In a wall-type intercom station according to claim 4, sensor pins projecting over the surface of the pressed glass layer, whose top edge is aligned with the plane of the cover plate.
Claim 7
Dependent Claim
29 words
In a wall-type intercom station according to claim 1 or 2, projections structured as plaster anchors extending on the outer side of the profiles forming the flush mounting box.
Claim 8
Dependent Claim
37 words
In a wall-type intercom station according to claim 1 or 2, an auxiliary cover plate provided with sound penetration openings is attached to the back side of the cover plate with interposition of a vibration damping means.
Claim 9
Dependent Claim
31 words
In a wall-type intercom station according to claim 7, wherein the sound penetration openings of the cover plate are offset relative to the sound penetration openings of the auxiliary cover plate.
Claim 10
Dependent Claim
88 words
A wall-type intercom station comprising: a flush mounting box; a cover plate with sound penetration openings attached to said box for closing off said box to the outside; switch means arranged in said cover plate; said mounting box comprising a plurality of profile elements, each profile element having a slot opening toward the front of the box; and a ring extending around the perimeter of said profile elements and being received within each of said slots, a front edge of said ring lying flush with said cover plate.
Claim 11
Dependent Claim
88 words
A wall-type intercom station comprising: a flush mounting box; a cover plate with sound penetration openings attached to said box for closing off said box to the outside; switch means arranged in said cover plate; said mounting box comprising a plurality of profile elements, each profile element having a slot opening toward the front of the box; and a ring extending around the perimeter of said profile elements and being received within each of said slots, a front edge of said ring lying flush with said cover plate.
Claim 12
Dependent Claim
56 words
A wall-type intercom station according to claim 9 wherein one of said profile elements has a generally C-shaped extruded profile including a back wall, a top wall and a bottom wall, and the other said profile elements are profiles which mate with said backs, top and bottom walls to form side walls of said mounting box.
Claim 13
Dependent Claim
61 words
A wall-type intercom station according to claim 10 wherein said slots are defined by a ledge extending lengthwise along each of said walls adjacent a front edge thereof, each ledge having a back edge disposed such that said ring is in contact with said back edges, the front edge of said ring and said cover plate lie flush with one another.
Claim 14
Dependent Claim
22 words
A wall-type intercom station according to claim 11 wherein each ledge includes a top flange extending forwardly from a respective back edge.
Claim 15
Dependent Claim
24 words
A wall-type intercom station according to claim 10, 11, or 12 wherein generally C-shaped slots are formed in said back wall and open forwardly.
Claim 16
Dependent Claim
33 words
A wall-type intercom station according to claims 10, 11 or 12 including a plurality of jar-like containers cast containing pressed glass attached to said cover plate holding indicator lights and the switch means.
Claim 17
Dependent Claim
44 words
A wall-type intercom according to claim 14 wherein the jar-like containers holding said switch means include sensor pins projecting over an outer-front facing surface of said pressed glass, a top-front facing edge of said pins being aligned with the plane of said cover plate.
Claim 18
Dependent Claim
25 words
A wall-type intercom station according to claim 10, 11, or 12 including a projection structured as plaster anchors extending out from each of said walls.
Claim 19
Dependent Claim
33 words
A wall-type intercom station according to claim 9, 10, 11, or 12 including an auxiliary cover plate attached to the back side of said cover plate with a vibration damping means interposed therebetween.
Claim 20
Dependent Claim
28 words
A wall-type intercom station according to claim 17 wherein the sound penetration openings of said cover plate are offset to sound penetration openings of said auxiliary cover plate.
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) | 1985-06-07 | 1985-12-07 | 1986-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-07 | 1989-12-07 | 1990-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-07 | 1993-12-07 | 1994-06-08 | $7700.00 | Window Closed / Lapsed |