US3609738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Security access control and alarm system
Assignee: Individual
•
Filing: 1970-01-14
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Granted: 1971-09-28
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Expires: 1990-01-14
Abstract
Abstract A control system for a restricted area to which only authorized personnel should have access in which the user operates a switching system to gain admittance. So long as the persons seeking admittance operate the required number of switches, the control system will allow access to the area, but will signal a remote alarm unless the operated switches correspond to a preset combination which is given only to authorized personnel.
Inventors
- 👤 Egon Marte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:17
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/22
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
120 words
A security access control and alarm system for a restricted access area having a multiplicity of switching stages, each stage having a multiplicity of switches, each switch having at least two poles, one of said poles of all of said switches in each stage, connected in series with the other stages for operation of said security access control and the other pole of all but one switch in each stage connected in parallel to operate a security warning system, whereby, if any one switch in each of every stage is operated, said security access control will allow access to said area and said security alarm system will be rendered inoperative, only if a predetermined combination of said switches is actuated.
Claim 2
Dependent Claim
120 words
A security access control and alarm system for a restricted access area having a multiplicity of switching stages, each stage having a multiplicity of switches, each switch having at least two poles, one of said poles of all of said switches in each stage, connected in series with the other stages for operation of said security access control and the other pole of all but one switch in each stage connected in parallel to operate a security warning system, whereby, if any one switch in each of every stage is operated, said security access control will allow access to said area and said security alarm system will be rendered inoperative, only if a predetermined combination of said switches is actuated.
Claim 3
Dependent Claim
31 words
The security access control of claim 1 having only one switching stage said first named group of poles of all of said switches being connected directly to said security access control.
Claim 4
Dependent Claim
45 words
The apparatus of claim 1 having a multiplicity of alarm switches associated with said Second named poles of all of said switches, so that the one combination of switches which will allow access to said area without operating said security alarm may be variably altered.
Claim 5
Dependent Claim
122 words
A combined security access control and alarm system for a restricted access area comprising, control means for controlling access to said area, a control circuit connected to said control means for actuating the same, a plurality of switches connected in said control circuit, each switch having a first set of contacts effective when actuated to cause said control means to open said restricted area whenever any combination of said switches is actuated, an alarm circuit, at least a second set of contacts on said switches to control said alarm circuit, said alarm circuit connected with all but one predetermined combination of said second set of contacts to close the alarm circuit whenever any but said predetermined combination of said switches is actuated.
Claim 6
Dependent Claim
122 words
A combined security access control and alarm system for a restricted access area comprising, control means for controlling access to said area, a control circuit connected to said control means for actuating the same, a plurality of switches connected in said control circuit, each switch having a first set of contacts effective when actuated to cause said control means to open said restricted area whenever any combination of said switches is actuated, an alarm circuit, at least a second set of contacts on said switches to control said alarm circuit, said alarm circuit connected with all but one predetermined combination of said second set of contacts to close the alarm circuit whenever any but said predetermined combination of said switches is actuated.
Claim 7
Dependent Claim
23 words
The apparatus of claim 4 having alarm switches associated with said second switch contacts, so that said predetermined combination may be variably altered.
Claim 8
Dependent Claim
29 words
The apparatus of claim 4, in which said switches are grouped in a plurality of stages requiring the actuation of a plurality of switches to form said predetermined combination.
Claim 9
Dependent Claim
42 words
The apparatus of claim 6, in which said first switch contacts of each stage are connected in series to form said control circuit and all but said predetermined combination of said second named contacts are connected in parallel to said alarm circuit.
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 |