US3829616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ringer blocking attachment for telephones
Assignee: International Mobile Machines Corp
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Filing: 1973-05-14
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Granted: 1974-08-13
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Expires: 1993-05-14
Abstract
Abstract A system for selectively ringing or actuating a telephone bell or any other desirable signal, or for alternatively actuating any functional device such as an alarm system, a timer, a radio, a coffee pot, etc., whereby when a telephone number is called, an auxiliary system automatically cuts in to prevent ringing or other actuation of the telephone bell or other signal device until a predetermined additional number or series of numbers are dialed or touch-toned at which time the telephone bell or other signal device is actuated or, alternatively, the functional device is actuated.
Inventors
- 👤 R Blouch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:32
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/66; H04M1/663; H04M1/665; H04M11/00; H04M19/00; H04M19/02; H04M19/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
145 words
In a telephone system comprising a sender and a receiver, there being audio and ringer circuits between said sender and said receiver, said receiver having a ringer therein, an auxiliary ringer network comprising: ring detector means connected to said ringer circuit for detecting the presence of incoming ringing signals and producing a ring disable signal when said ringing signals are detected; an auxiliary ringer; ring disable means responsive to said ring disable signal for noRmally connecting said ringer circuit to said auxiliary ringer and actuatable upon receipt of an actuating signal to connect said ringer circuit to the ringer of said receiver; ring activator means connected to said audio circuits for generating an actuating signal when a predetermined number and sequence of pulses are received from said sender; and means for applying the actuating signal from said ring activator means to said ring disable means.
Claim 2
Dependent Claim
145 words
In a telephone system comprising a sender and a receiver, there being audio and ringer circuits between said sender and said receiver, said receiver having a ringer therein, an auxiliary ringer network comprising: ring detector means connected to said ringer circuit for detecting the presence of incoming ringing signals and producing a ring disable signal when said ringing signals are detected; an auxiliary ringer; ring disable means responsive to said ring disable signal for noRmally connecting said ringer circuit to said auxiliary ringer and actuatable upon receipt of an actuating signal to connect said ringer circuit to the ringer of said receiver; ring activator means connected to said audio circuits for generating an actuating signal when a predetermined number and sequence of pulses are received from said sender; and means for applying the actuating signal from said ring activator means to said ring disable means.
Claim 3
Dependent Claim
16 words
The system of claim 1 wherein said ring activator means comprises a tone-decoder and comparitor network.
Claim 4
Dependent Claim
29 words
The system of claim 2 wherein said ring activator means includes means for actuating other auxiliary equipment upon receiving a predetermined number and sequence of pulses from said sender.
Claim 5
Dependent Claim
27 words
The system of claim 2 wherein the tone-decoder comprises a plurality of phase-locked loops, said loops being connected to decoding logic means for generating an actuating signal.
Claim 6
Dependent Claim
119 words
The system of claim 1 wherein said ring detector means comprises a rectifier in circuit with a transistor which is in circuit with a flip-flop, said rectifier being constructed and arranged to rectify an incoming ringer signal from the sender to trigger the transistor which thereupon moves the flip-flop to apply a disabling signal to a switch in the ring disable means, said switch being in circuit with both the receiver ringer and the auxiliary ringer, said switch being alternately movable from a normal position opening the circuit to the receiver ringer and closing the circuit to the auxiliary ringer to a second position opening the circuit to the auxiliary ringer and closing the circuit to the receiver ringer.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |