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US3609730A
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Elevator emergency testing system
Assignee: ARTHUR H BERNDTSON
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Filing: 1969-03-21
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Granted: 1971-09-28
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Expires: 1989-03-21
Abstract
Abstract An elevator emergency testing system is incorporated in the alarm and emergency lighting circuits. The elevator car emergency lights are supplied electrical energy through a battery maintained in the charged state by a battery charger and light control module which is fed by the car service supply voltage. One pole of an elevator alarm button is employed to trigger the alarm in the conventional sense while another pole of the same button automatically disconnects the car supply voltage triggering the emergency lights.
Inventors
- 👤 Stephen A Hornung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:59
CPC Classifications
H; H02; H02J; H02J9/00; H02J9/02; B; B66; B66B; B66B5/00; B66B5/0006; B66B5/0018; B66B5/0025; B66B5/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
73 words
An elevator emergency testing system comprising: a battery; a battery charger and control circuit; emergency lights coupled to said control circuit; an audible alarm coupled to said control circuit; means in said control circuit responsive to a power failure for coupling the emergency lights to the battery; an alarm button; and means under control of said button for interrupting the power to said control circuit and simultaneously connecting said alarm to said battery.
Claim 2
Dependent Claim
73 words
An elevator emergency testing system comprising: a battery; a battery charger and control circuit; emergency lights coupled to said control circuit; an audible alarm coupled to said control circuit; means in said control circuit responsive to a power failure for coupling the emergency lights to the battery; an alarm button; and means under control of said button for interrupting the power to said control circuit and simultaneously connecting said alarm to said battery.
Claim 3
Dependent Claim
34 words
The elevator emergency testing system claimed in claim 1, wherein the means under control of said alarm button comprises first and second contacts, respectively located in circuit with said alarm and said control circuit.
Claim 4
Dependent Claim
35 words
The elevator emergency testing system claimed in claim 2, wherein said means under control of said alarm button comprises a relay coupled in series between said alarm button and said battery for controlling said contacts.
Claim 5
Dependent Claim
35 words
The elevator emergency testing system claimed in claim 3, wherein a further set of contacts are provided for said relay connected to self-hold said relay; said system further comprising means foR manually releasing said relay.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |