US4533793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall exchange
Assignee: Tenovis GmbH and Co KG
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Filing: 1982-10-26
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Granted: 1985-08-06
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Expires: 2002-10-26
Abstract
Abstract A wall exchange for a telephone system having a baseplate affixed to a supporting wall in which the various component parts are attached to one another and to the baseplate by molded snap-in connectors.
Inventors
- 👤 Fritz Geppert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:16
CPC Classifications
H; H04; H04Q; H04Q1/00; H04Q1/02; H04Q1/10; H04Q1/023; H04Q1/14; H04Q1/142
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
157 words
In a wall exchange for telephone systems, particularly key systems, in which a baseplate (1) is fixed to a wall and in the lower portion of said baseplate are connecting strips (3) with multiple contact strips pointing upwards, and having a component holder (7) which has on its backside a wiring card (18) which in its lower end has multiple-plug connectors (19) whereby the component holder is mounted with the multiple-plug connector inserted into the multiple contact strips in a slanted forward direction and, by swinging toward the wall, is attached to the baseplate and further having power supply modules (24, 25, 26) and a housing cover (35), the improvement comprising: each of said power supply modules, component holder, cover and baseplate being made of plastic and including means on said baseplate and on said modules, component holder and cover for making snap-in locking engagement between each of said modules, component holder and cover and said baseplate.
Claim 2
Dependent Claim
157 words
In a wall exchange for telephone systems, particularly key systems, in which a baseplate (1) is fixed to a wall and in the lower portion of said baseplate are connecting strips (3) with multiple contact strips pointing upwards, and having a component holder (7) which has on its backside a wiring card (18) which in its lower end has multiple-plug connectors (19) whereby the component holder is mounted with the multiple-plug connector inserted into the multiple contact strips in a slanted forward direction and, by swinging toward the wall, is attached to the baseplate and further having power supply modules (24, 25, 26) and a housing cover (35), the improvement comprising: each of said power supply modules, component holder, cover and baseplate being made of plastic and including means on said baseplate and on said modules, component holder and cover for making snap-in locking engagement between each of said modules, component holder and cover and said baseplate.
Claim 3
Dependent Claim
74 words
In a wall exchange for telephone systems, particularly key systems, having a plastic baseplate (1) fixed to a supporting wall; connecting strips (2) having multiple contact strips (3); lateral guide means (4, 5) on the lower portion of said baseplate (1) for slidably receiving and holding said connecting strips (2); and snap-in spring means (6) molded to said baseplate for holding said contact strips in place when inserted into said guide means (4, 5).
Claim 4
Dependent Claim
74 words
In a wall exchange for telephone systems, particularly key systems, having a plastic baseplate (1) fixed to a supporting wall; connecting strips (2) having multiple contact strips (3); lateral guide means (4, 5) on the lower portion of said baseplate (1) for slidably receiving and holding said connecting strips (2); and snap-in spring means (6) molded to said baseplate for holding said contact strips in place when inserted into said guide means (4, 5).
Claim 5
Dependent Claim
62 words
In a wall exchange as described in claim 2, further including: power supply modules (24, 25, 26) made of plastic having lower bend extensions (27) and upper bend extensions (28); a strip (29) on the baseplate (1) with mounting eyelets (30) releasably engaging said lower extensions (27); and hooks (31) on said baseplate (1) for releasably engaging said upper bend extensions (28).
Claim 6
Dependent Claim
42 words
A wall exchange as described in claim 3 further including snap-in springs (32) on said baseplate (1) for applying a holding force on the power supply modules when said eyelets (30) and said hooks (31) are respectively engaging said extensions (27, 28).
Claim 7
Dependent Claim
86 words
A wall exchange as in claim 2 further including: a plastic component holder (7) having on its backside a wiring card (18) with multiple plugs (19) at its lower end for electrically contacting multiple contact strips (3) when said connecting strips (2) are located in said guide means (4, 5); cutouts (22, 23) on the side walls of said component holder; and snap-in hooks (20, 21) on the baseplate for respectively lockingly engaging said cutouts (22, 23) for releasably attaching said component holder to said baseplate.
Claim 8
Dependent Claim
39 words
A wall exchange as in claim 2 further including: a plastic housing cover (35) having cutouts (36); and snap-in springs (37) molded to said baseplate for lockingly engaging said cutouts (36) for releasably attaching said cover to said baseplate.
References Cited (Backward Citations)
DE2846825A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |