CA977839A - Combination vital level detector and "and" gate - Google Patents

Combination vital level detector and "and" gate

Info

Publication number
CA977839A
CA977839A CA169,891A CA169891A CA977839A CA 977839 A CA977839 A CA 977839A CA 169891 A CA169891 A CA 169891A CA 977839 A CA977839 A CA 977839A
Authority
CA
Canada
Prior art keywords
gate
combination
level detector
vital level
vital
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA169,891A
Other versions
CA169891S (en
Inventor
Reed H. Grundy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westinghouse Air Brake Co
Original Assignee
Westinghouse Air Brake Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Westinghouse Air Brake Co filed Critical Westinghouse Air Brake Co
Application granted granted Critical
Publication of CA977839A publication Critical patent/CA977839A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/16—Anti-collision systems
    • G08G1/161—Decentralised systems, e.g. inter-vehicle communication
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/20—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator
    • H03B5/26—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator frequency-determining element being part of bridge circuit in closed ring around which signal is transmitted; frequency-determining element being connected via a bridge circuit to such a closed ring, e.g. Wien-Bridge oscillator, parallel-T oscillator
CA169,891A 1972-06-01 1973-04-30 Combination vital level detector and "and" gate Expired CA977839A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25887972A 1972-06-01 1972-06-01

Publications (1)

Publication Number Publication Date
CA977839A true CA977839A (en) 1975-11-11

Family

ID=22982523

Family Applications (1)

Application Number Title Priority Date Filing Date
CA169,891A Expired CA977839A (en) 1972-06-01 1973-04-30 Combination vital level detector and "and" gate

Country Status (4)

Country Link
US (1) US3793596A (en)
AU (1) AU464987B2 (en)
CA (1) CA977839A (en)
GB (1) GB1406156A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4136315A (en) * 1977-07-27 1979-01-23 Westinghouse Air Brake Company Low and high frequency oscillators having common voltage regulator circuit
US4391146A (en) * 1981-06-01 1983-07-05 Rosemount Inc. Parallel T impedance measurement circuit for use with variable impedance sensor
US5535968A (en) * 1992-07-27 1996-07-16 Union Switch & Signal Inc. Vital railway signal link
US7042251B2 (en) * 2004-04-28 2006-05-09 Seiko Epson Corporation Multi-function differential logic gate

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2905835A (en) * 1955-05-27 1959-09-22 Teletype Corp Transistor relay and signal shaping device
US3026505A (en) * 1959-08-19 1962-03-20 Honeywell Regulator Co Unijunction transistor oscillator voltage monitoring circuit

Also Published As

Publication number Publication date
US3793596A (en) 1974-02-19
AU464987B2 (en) 1975-09-11
GB1406156A (en) 1975-09-17
AU4864972A (en) 1974-05-09

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