US3633616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stream switching and indicating apparatus
Assignee: Applied Automation Inc
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Filing: 1970-09-02
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Granted: 1972-01-11
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Expires: 1990-09-02
Abstract
Abstract Apparatus comprising two flip-flop circuits is employed to control selectively the passage of two fluid streams to an analyzer. Signals are also established to indicate the particular stream being passed to the analyzer.
Inventors
- 👤 Harry M Meshek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:49
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/38; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8242
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
205 words
Apparatus for selectively passing first and second fluid streams to a common point of usage comprising: a three-way solenoid-operated valve having first, second and third ports, said first and second ports being connected when said solenoid is deenergized, and said first and third ports being connected when said solenoid is energized; first conduit means communicating with said second port to introduce a first fluid; second conduit means communicating with said third port to introduce a second fluid, said first port being adapted to be connected to the common point of usage; a current source; circuit means including switching means connecting the solenoid of said valve to said current source; a flip-flop circuit having an input and first and second outputs, said first output normally being maintained at a potential greater than the potential at said second output, the application of a series of pulses to said input serving to reverse the potentials at said outputs in sequence; means for applying pulses to the input of said flip-flop circuit; and means responsive to the potentials at said outputs to control said switching means so that said solenoid is alternately energized and deenergized by the application of a series of pulses to the input of said flip-flop.
Claim 2
Dependent Claim
205 words
Apparatus for selectively passing first and second fluid streams to a common point of usage comprising: a three-way solenoid-operated valve having first, second and third ports, said first and second ports being connected when said solenoid is deenergized, and said first and third ports being connected when said solenoid is energized; first conduit means communicating with said second port to introduce a first fluid; second conduit means communicating with said third port to introduce a second fluid, said first port being adapted to be connected to the common point of usage; a current source; circuit means including switching means connecting the solenoid of said valve to said current source; a flip-flop circuit having an input and first and second outputs, said first output normally being maintained at a potential greater than the potential at said second output, the application of a series of pulses to said input serving to reverse the potentials at said outputs in sequence; means for applying pulses to the input of said flip-flop circuit; and means responsive to the potentials at said outputs to control said switching means so that said solenoid is alternately energized and deenergized by the application of a series of pulses to the input of said flip-flop.
Claim 3
Dependent Claim
13 words
The apparatus of claim 1 wherein said flip-flop circuit is a J-K flip-flop.
Claim 4
Dependent Claim
79 words
The apparatus of claim 1 wherein said switching means comprises a relay to connect said current source to said solenoid, means connecting one terminal of the coil of said relay to one output of said flip-flop circuit, and means connecting the second terminal of the coil of said relay to a point of reference potential, said point of reference potential being substantially equal to the potential at said first output when saiD flip-flop circuit is in a first position.
Claim 5
Dependent Claim
38 words
The apparatus of claim 1, further comprising an indicating lamp connected to one output of said flip-flop circuit so as to be energized alternately when a series of pulses is applied to the input of said flip-flop circuit.
Claim 6
Dependent Claim
113 words
The apparatus of claim 1, further comprising a second flip-flop circuit having an input and first and second outputs, the first output of said second flip-flop circuit normally being maintained at a potential greater than the potential at the second output of said second flip-flop circuit, the application of a series of pulses to the input of said second flip-flop circuit serving to reverse the potentials at the two outputs of said second flip-flop circuit; means connecting the input of said second flip-flop circuit to the input of said first-mentioned flip-flop circuit; and means connected to the first and second outputs of said second flip-flop circuit to establish first and second indicating signals.
Claim 7
Dependent Claim
70 words
The apparatus of claim 5 wherein said means to establish said indicating signals comprises first and second resistors having first terminals thereof connected to the respective outputs of said second flip-flop circuit, said resistors having different values; and means for connecting the second end terminals of said resistors selectively to a recording means to apply different potentials to the recording means depending on the position of the second flip-flop circuit.
References Cited (Backward Citations)
US3068685A
Cited
US3432684A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |