US3751594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone alarm
Assignee: Individual
•
Filing: 1972-05-18
•
Granted: 1973-08-07
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Expires: 1992-05-18
Abstract
Abstract A telephone alarm in which when triggered by the breaking or making of an alarm circuit raises the receiver of the telephone, dials a police or fire number and plays a recording over the telephone giving the necessary information concerning the energency. A timer is provided for rendering the alarm operative during certain periods of a day and inoperative during other periods of the day to permit normal ingress and egress without triggering the alarm.
Inventors
- 👤 J Strother
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:14
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/04; H04M11/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
240 words
A telephone alarm comprising a mechanism for raising the handset from the telephone base, a mechanism for dialing the emergency number of a telephone system, a recording playing unit for transmitting through the telephone an emergency message, and a timer unit for controlling active and inactive periods of said alarm, said timer unit comprising a housing, a reversible electric motor mounted in said housing and driving an upright threaded shaft therein, a carriage mounted on said threaded shaft for vertical movement in said housing, a pair of guide shafts positioned adjacent to said threaded shaft with said carriage slidably mounted on said guide shafts with at least one of said guide shafts electrically connected to said contact member, an elongate contact bar in said housing extending parallel to said threaded shaft, a plurality of contact pins each including a shaft mounted for horizontal sliding movement in said contact bar and arranged to be manually movable between a position to engage said contact member to a position out of reach of said contact member for establishing periods of activity and periods of inactivity of said telephone alarm, said contact pin shafts each having a pair of spaced detent sockets and a spring biased ball mounted in said contact bar for contact with each of said contact pin shafts to engage in a respective one of said detent sockets to provide means for releasably locking said pins in extended and retracted positions.
Claim 2
Dependent Claim
240 words
A telephone alarm comprising a mechanism for raising the handset from the telephone base, a mechanism for dialing the emergency number of a telephone system, a recording playing unit for transmitting through the telephone an emergency message, and a timer unit for controlling active and inactive periods of said alarm, said timer unit comprising a housing, a reversible electric motor mounted in said housing and driving an upright threaded shaft therein, a carriage mounted on said threaded shaft for vertical movement in said housing, a pair of guide shafts positioned adjacent to said threaded shaft with said carriage slidably mounted on said guide shafts with at least one of said guide shafts electrically connected to said contact member, an elongate contact bar in said housing extending parallel to said threaded shaft, a plurality of contact pins each including a shaft mounted for horizontal sliding movement in said contact bar and arranged to be manually movable between a position to engage said contact member to a position out of reach of said contact member for establishing periods of activity and periods of inactivity of said telephone alarm, said contact pin shafts each having a pair of spaced detent sockets and a spring biased ball mounted in said contact bar for contact with each of said contact pin shafts to engage in a respective one of said detent sockets to provide means for releasably locking said pins in extended and retracted positions.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |