HK68789A - Electro-pneumatic control systems - Google Patents

Electro-pneumatic control systems

Info

Publication number
HK68789A
HK68789A HK687/89A HK68789A HK68789A HK 68789 A HK68789 A HK 68789A HK 687/89 A HK687/89 A HK 687/89A HK 68789 A HK68789 A HK 68789A HK 68789 A HK68789 A HK 68789A
Authority
HK
Hong Kong
Prior art keywords
electro
control systems
pneumatic control
pneumatic
systems
Prior art date
Application number
HK687/89A
Other languages
English (en)
Inventor
Jane E Smith
Rowland E Whitford
Original Assignee
Babcock & Wilcox 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 Babcock & Wilcox Co filed Critical Babcock & Wilcox Co
Publication of HK68789A publication Critical patent/HK68789A/xx

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/20—Control of fluid pressure characterised by the use of electric means
    • G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
    • G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
    • G05D16/202—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means actuated by an electric motor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2278—Pressure modulating relays or followers
    • Y10T137/2409—With counter-balancing pressure feedback to the modulating device
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7758—Pilot or servo controlled
    • Y10T137/7761—Electrically actuated valve
HK687/89A 1983-02-22 1989-08-24 Electro-pneumatic control systems HK68789A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/468,105 US4509547A (en) 1983-02-22 1983-02-22 Control system for an electro-pneumatic converter

Publications (1)

Publication Number Publication Date
HK68789A true HK68789A (en) 1989-09-01

Family

ID=23858446

Family Applications (1)

Application Number Title Priority Date Filing Date
HK687/89A HK68789A (en) 1983-02-22 1989-08-24 Electro-pneumatic control systems

Country Status (13)

Country Link
US (1) US4509547A (fr)
EP (1) EP0120593B1 (fr)
JP (2) JPS59158404A (fr)
KR (1) KR890000611B1 (fr)
AU (1) AU565737B2 (fr)
BR (1) BR8400580A (fr)
CA (1) CA1210477A (fr)
DE (1) DE3477854D1 (fr)
ES (1) ES529911A0 (fr)
HK (1) HK68789A (fr)
IN (1) IN161518B (fr)
MX (1) MX157424A (fr)
SG (1) SG38989G (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4630631A (en) * 1983-02-24 1986-12-23 The Babcock & Wilcox Company Pneumatic servo assembly for an electro-pneumatic converter
US4705067A (en) * 1986-05-13 1987-11-10 Coffee Curtis L Electric-to-pressure transducer
JPH0778691B2 (ja) * 1986-08-18 1995-08-23 日本ベ−レ−株式会社 パルスポジシヨナ
GB8811123D0 (en) * 1988-05-11 1988-06-15 Watson Smith Ltd Pressure regulator
GB9105341D0 (en) * 1991-03-13 1991-04-24 Watson Smith Ltd I/p converters
US5457435A (en) * 1994-03-25 1995-10-10 Caterpillar Inc. Pulse width modulated driver
US5642271A (en) * 1995-08-31 1997-06-24 Hewlett-Packard Company Pneumatic control system
JP5740952B2 (ja) * 2010-11-04 2015-07-01 宇部興産株式会社 分離膜モジュール

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE532990A (fr) * 1953-11-02 1900-01-01
US2863287A (en) * 1956-11-09 1958-12-09 Research Corp Vacuum control system
US3113582A (en) * 1961-01-11 1963-12-10 Fluidgenics Pressure control system
US3315250A (en) * 1963-03-29 1967-04-18 Honeywell Inc Electrical apparatus
DE6927354U (de) * 1968-07-10 1972-08-10 Diesel Kiki Co Vorrichtung zum umwandeln elektrischer signale in fluddrucksignale.
US3819960A (en) * 1972-05-01 1974-06-25 Love Controls Corp Controller circuit
JPS5519266B2 (fr) * 1973-03-03 1980-05-24
US4124811A (en) * 1977-09-12 1978-11-07 Sperry Rand Corporation Circuit for bi-directionally powering a motor
SE420639B (sv) * 1979-03-01 1981-10-19 Saab Scania Ab Signalomvandlare enhet for omvandling av en elektrisk reglersignal till en pneumatisk signal med ett piezoelektrisk element

Also Published As

Publication number Publication date
MX157424A (es) 1988-11-22
IN161518B (fr) 1987-12-19
SG38989G (en) 1990-01-26
AU2478984A (en) 1984-08-30
KR840009006A (ko) 1984-12-20
ES8500666A1 (es) 1984-11-01
AU565737B2 (en) 1987-09-24
CA1210477A (fr) 1986-08-26
JPH04114612U (ja) 1992-10-09
KR890000611B1 (ko) 1989-03-21
ES529911A0 (es) 1984-11-01
JPS59158404A (ja) 1984-09-07
US4509547A (en) 1985-04-09
EP0120593B1 (fr) 1989-04-19
EP0120593A2 (fr) 1984-10-03
DE3477854D1 (en) 1989-05-24
EP0120593A3 (en) 1985-07-10
BR8400580A (pt) 1984-09-25

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)