US3940632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonpredictable actuator for switches or the like
Assignee: Calspan Corp
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Filing: 1974-03-04
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Granted: 1976-02-24
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Expires: 1994-03-04
Abstract
Abstract A nonpredictable, nondeterministic actuator for switches or the like having two unsynchronized pulse generators delivering pulses to an AND gate which passes an actuating signal only when the pulses from the generators are coincidental. One generator produces a pulse train at a frequency much higher than the other generator which produces very short pulses and has a maximum timing uncertainty or jitter which is greater than the period of the first mentioned generator.
Inventors
- 👤 Robert Allen Padgug
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:32
CPC Classifications
H; H01; H01H; H01H7/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
86 words
A nonpredictable actuator for switches or the like, comprising; a. first pulse generating means for producing a first output consisting of a train of pulses at a first frequency, b. second pulse generating means for producing a second output of short pulses at a second frequency which is much lower than said first frequency, and c. means responsive to said first and second outputs for generating an actuating signal for lamp circuits or the like only when said first and second output of pulses are coincidental.
Claim 2
Dependent Claim
86 words
A nonpredictable actuator for switches or the like, comprising; a. first pulse generating means for producing a first output consisting of a train of pulses at a first frequency, b. second pulse generating means for producing a second output of short pulses at a second frequency which is much lower than said first frequency, and c. means responsive to said first and second outputs for generating an actuating signal for lamp circuits or the like only when said first and second output of pulses are coincidental.
Claim 3
Dependent Claim
16 words
The apparatus according to claim 1, wherein said first and second pulse generating means are unsynchronized.
Claim 4
Dependent Claim
33 words
The apparatus according to claim 2, wherein the period of said first pulse generating means is smaller than the jitter on the time axis of the period of said second pulse generating means.
Claim 5
Dependent Claim
49 words
The apparatus according to claim 3, further comprising; d. counting means responsive to the output of said means for generating an actuating signal for developing a first output signal after a predetermined number of actuating signals and a second output signal after a second predetermined number of actuating signals.
Claim 6
Dependent Claim
15 words
The apparatus according to claim 4, wherein said first and second predetermined numbers are equal.
Claim 7
Dependent Claim
30 words
The apparatus according to claim 4, further comprising; e. switching means responsive to the first and second outputs of said counting means for changing the condition of a controlled circuit.
Claim 8
Dependent Claim
14 words
The apparatus according to claim 6, wherein said controlled circuit comprises a lighting circuit.
Claim 9
Dependent Claim
33 words
The apparatus according to claim 1, wherein the period of said first pulse generating means is smaller than the jitter on the time axis of the period of said second pulse generating means.
Claim 10
Dependent Claim
49 words
The apparatus according to claim 8, further comprising; d. counting means responsive to the output of said means for generating an actuating signal for developing a first output signal after a predetermined number of actuating signals and a second output signal after a second predetermined number of actuating signals.
Claim 11
Dependent Claim
30 words
The apparatus according to claim 9, further comprising; e. switching means responsive to the first and second outputs of said counting means for changing the condition of a controlled circuit.
Claim 12
Dependent Claim
25 words
The apparatus according to claim 10, wherein said means responsive to said first and second outputs for generating an actuating signal comprises an AND gate.
Claim 13
Dependent Claim
25 words
The apparatus according to claim 1, wherein said means responsive to said first and second outputs for generating an actuating signal comprises an AND gate.
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) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |