Patent US3886537A successfully refreshed from Google Patents.
US3886537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alarm booth
Assignee: Individual
•
Filing: 1973-06-28
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Granted: 1975-05-27
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Expires: 1993-06-28
Abstract
Abstract A booth having an entrance door and being otherwise totally enclosed with a fire alarm call box mounted inside to one wall. Electrical switches actuated by weight on the booth floor and closing of the booth door cause the booth door to be automatically locked for a pre-set time interval upon the ringing of the fire alarm. After elapse of the pre-set time interval, unless the door lock has already been deactuated by fire or police department personnel arriving at the booth, the door automatically unlocks to release the person inside. Means are described to insure door unlocking in the event of power or component failure, and a local alarm and system test means are provided. Under conditions of no power failure, the booth door must be closed with the alarm sender inside the booth or the fire alarm cannot be actuated.
Inventors
- 👤 Yale M Mann
- 👤 Walter B Udell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:22
CPC Classifications
G; G08; G08B; G08B25/00; G08B25/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
202 words
A personnel detention system for holding captive a person who actuates an alarm circuit, comprising in combination, a. a primary alarm mechanism having an actuator, b. an enclosure within which said primary alarm mechanism is mounted, said enclosure having a door through which a person desiring to actuate said alarm may pass, and said enclosure having no other means of ingress or egress, c. an interference mechanism normally operative to prevent operation of said primary alarm mechanism, d. an actuatable door lock mechanism operatively associated with said enclosure door, e. means operative to automatically deactuate said door lock mechanism and unlock said enclosure door after a predetermined time has elapsed from actuation of said lock mechanism, f. sensing means for sensing whether or not said enclosure door is closed, g. control means operatively coupled to said interference mechanism, to said sensing means, to said door lock mechanism and to said primary alarm mechanism effective when operated to disable said interference mechanism and permit actuation of said primary alarm mechanism responsive to sensing by said sensing means that said enclosure door is closed, and to normally actuate said door lock mechanism to lock said enclosure door when said primary alarm mechanism is actuated.
Claim 2
Dependent Claim
202 words
A personnel detention system for holding captive a person who actuates an alarm circuit, comprising in combination, a. a primary alarm mechanism having an actuator, b. an enclosure within which said primary alarm mechanism is mounted, said enclosure having a door through which a person desiring to actuate said alarm may pass, and said enclosure having no other means of ingress or egress, c. an interference mechanism normally operative to prevent operation of said primary alarm mechanism, d. an actuatable door lock mechanism operatively associated with said enclosure door, e. means operative to automatically deactuate said door lock mechanism and unlock said enclosure door after a predetermined time has elapsed from actuation of said lock mechanism, f. sensing means for sensing whether or not said enclosure door is closed, g. control means operatively coupled to said interference mechanism, to said sensing means, to said door lock mechanism and to said primary alarm mechanism effective when operated to disable said interference mechanism and permit actuation of said primary alarm mechanism responsive to sensing by said sensing means that said enclosure door is closed, and to normally actuate said door lock mechanism to lock said enclosure door when said primary alarm mechanism is actuated.
Claim 3
Dependent Claim
74 words
A system as described in claim 1 wherein said door lock mechanism includes electrically actuatable means to lock said door, wherein said sensing means comprises electrical switch means having contacts which are opened or closed as determined by the open or closed state of said door, and wherein said control means comprises electrical switch means in electrical circuit with said door lock mechanism electrically actuatable means and with said sensing means electrical switch means.
Claim 4
Dependent Claim
112 words
A system as described in claim 2 wherein said sensing means electrical switch means comprises a first switch whose contacts are closes when said enclosure door is not closed, wherein said control means comprises electrically energizable means in electric circuit with said first switch and operatively coupled to said interference mechanism, whereby, said control means electrically energizable means when energized through the closed contacts of said first switch maintains said interference mechanism operative to prevent operation of said primary alarm mechanism, and when deenergized by opening of the contacts of said first switch when said enclosure door is closed renders said interference mechanism inoperative to permit operation of said primary alarm circuit.
Claim 5
Dependent Claim
39 words
A system as described in claim 3 wherein said sensing means electrical switch means in electrical circuit with said control means electrical switch means comprises a second switch whose contacts are open when said enclosure door is not closed.
Claim 6
Dependent Claim
19 words
A system as described in claim 4 wherein said door lock mechanism is electrically actuatable and is mechanically deactuatable.
Claim 7
Dependent Claim
39 words
A system as described in claim 4 further including an actuatable secondary alarm mechanism operatively coupled to said control means, said secondary alarm mechanism being normally actuated by said control means when the latter actuates said primary alarm mechanism.
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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |