US3681532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Restricted dial telephone station
Assignee: International Standard Electric Corp
•
Filing: 1970-01-09
•
Granted: 1972-08-01
•
Expires: 1990-01-09
Abstract
Abstract Equipment is provided for blocking certain coin box and other dial telephones with respect to certain call numbers and certain types of traffic. Mechanical means are employed to interrupt selected calls, permitting the dial to be operated but not initiating a connection to the central switching office.
Inventors
- 👤 Gunther Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:21
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/66; H04M1/677; H04M17/00; H04M17/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
153 words
An arrangement for controlling the establishment of connections in telephone systems from a coin-box station equipped with a call number intercept device comprising means for storing a sequence of dialled digits, means for comparing said sequence with a previously given sequence of blocked digits, and means for preventing a connection from being completed in cases where the sequence of dialled digits is in agreement with the sequence of the previously given sequence of blocked digits, said coin-box telephone station including means for initiating national and international toll dialling connections, the call number intercept device further comprising switching means responsive to an access code identifying the type of traffic, means to evaluate the access code, means preventing the access code from being stored in the means for storing, and means serving to control the setting of further equipments within the coin-box station and at the exchange in dependence upon the result of such evaluation.
Claim 2
Dependent Claim
153 words
An arrangement for controlling the establishment of connections in telephone systems from a coin-box station equipped with a call number intercept device comprising means for storing a sequence of dialled digits, means for comparing said sequence with a previously given sequence of blocked digits, and means for preventing a connection from being completed in cases where the sequence of dialled digits is in agreement with the sequence of the previously given sequence of blocked digits, said coin-box telephone station including means for initiating national and international toll dialling connections, the call number intercept device further comprising switching means responsive to an access code identifying the type of traffic, means to evaluate the access code, means preventing the access code from being stored in the means for storing, and means serving to control the setting of further equipments within the coin-box station and at the exchange in dependence upon the result of such evaluation.
Claim 3
Dependent Claim
138 words
An arrangement according to claim 1, in which the call number intercept device is mechanically built into the dial switch of the substation set, the device includes a first tooth segment, the device being actuated upon the wind-up of the dial switch, and responding to dialling of an access code to actuate a two-arm lever which, in turn, lifts a ratchet pawl of the level engaging segment, that thereupon said level engaging segment is returned to normal and, simultaneously, a second pawl releases said first tooth segment, and that upon return of both the dial switch and the wiper, the pawl of a switch gear pillar runs on to a pin forming part of the extended lever of said ratchet pawl, and the level contact, said first tooth segment, and said switch gear pillar all return to normal.
Claim 4
Dependent Claim
79 words
An arrangement according to claim 2, in which switching means are provided which, in accordance with the dialled access code upon winding up of the dial switch, and via temporarily closed conTacts of the intercept field, are caused to respond, and contacts associated with said switching means are used to prepare an operating circuit for a switching means which serves to prevent the connection from being established in accordance with a call number as stored in said intercept field.
Claim 5
Dependent Claim
45 words
An arrangement according to claim 3, in which further contacts as associated with the switching means actuated in accordance with the dialled access code, serve to set the coin-collect device of the coin-box station to a coin-collecting sequence corresponding to the respective type of traffic.
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |