IT1004940B - Sistema di controllo a valvola idraulica - Google Patents

Sistema di controllo a valvola idraulica

Info

Publication number
IT1004940B
IT1004940B IT67407/74A IT6740774A IT1004940B IT 1004940 B IT1004940 B IT 1004940B IT 67407/74 A IT67407/74 A IT 67407/74A IT 6740774 A IT6740774 A IT 6740774A IT 1004940 B IT1004940 B IT 1004940B
Authority
IT
Italy
Prior art keywords
control system
valve control
hydraulic valve
hydraulic
valve
Prior art date
Application number
IT67407/74A
Other languages
English (en)
Original Assignee
Maxton Mfg 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 Maxton Mfg Co filed Critical Maxton Mfg Co
Application granted granted Critical
Publication of IT1004940B publication Critical patent/IT1004940B/it

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
    • B66B1/40—Means for stopping the cars, cages, or skips at predetermined levels and for correct levelling at landings
    • B66B1/405—Means for stopping the cars, cages, or skips at predetermined levels and for correct levelling at landings for hydraulically actuated elevators
    • 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
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87177—With bypass
    • 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
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87193—Pilot-actuated
    • 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
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87193—Pilot-actuated
    • Y10T137/87209—Electric

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Types And Forms Of Lifts (AREA)
  • Elevator Control (AREA)
  • Servomotors (AREA)
IT67407/74A 1973-02-15 1974-02-13 Sistema di controllo a valvola idraulica IT1004940B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US33298673A 1973-02-15 1973-02-15

Publications (1)

Publication Number Publication Date
IT1004940B true IT1004940B (it) 1976-07-20

Family

ID=23300764

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67407/74A IT1004940B (it) 1973-02-15 1974-02-13 Sistema di controllo a valvola idraulica

Country Status (7)

Country Link
US (1) US4153074A (it)
JP (1) JPS6027842B2 (it)
DE (1) DE2358057C2 (it)
FR (1) FR2217576B1 (it)
GB (3) GB1464143A (it)
IT (1) IT1004940B (it)
SE (1) SE395516B (it)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4206688A (en) * 1978-06-09 1980-06-10 Caterpillar Tractor Co. Overrunning load control for hydraulic motors
JPS54162353A (en) * 1978-06-13 1979-12-22 Toshiba Corp Hydraulic circuit for driving cargo handling apparatus
DE2837666A1 (de) * 1978-08-29 1980-03-06 Inter Hydraulik Gmbh Fuell- und auslassventil zur steuerung des hydraulikflusses, insbesondere bei pressen, abkantpressen und scheren
JPS58207261A (ja) * 1982-05-28 1983-12-02 株式会社日立製作所 油圧エレベ−タの制御弁装置
US4601366A (en) * 1983-04-22 1986-07-22 Blain Roy W Down valve for the down speed control of a hydraulic elevator
DE3434014A1 (de) * 1984-09-15 1986-03-20 Beringer-Hydraulik GmbH, Neuheim, Zug Hydraulische steuerung
JPS6249003A (ja) * 1985-08-28 1987-03-03 Taiyo Tekko Kk 弁装置
US4637495A (en) * 1985-10-09 1987-01-20 Blain Roy W Pressure/viscosity compensated up travel for a hydraulic elevator
US4694935A (en) * 1986-10-17 1987-09-22 Cemco, Inc. Self-adjusting control valve for elevators
JPS63199969A (ja) * 1987-02-13 1988-08-18 Hitachi Ltd 流体制御弁
FI874147A0 (fi) * 1987-09-22 1987-09-22 Pentti Rita Ventilanordning.
US5232070A (en) * 1991-08-15 1993-08-03 Blain Roy W Up leveling control system for small elevators
US5395090A (en) * 1992-10-23 1995-03-07 Rosaen; Nils O. Valve for high pressure fluid systems
US5374794A (en) * 1993-12-09 1994-12-20 United States Elevator Corp. Elevator control valve assembly
US5651436A (en) * 1995-04-20 1997-07-29 Midwest Brake Bond Company Brake and clutch control system
AU770145B2 (en) * 2000-07-03 2004-02-12 Wittur Ag Valve control unit for a hydraulic elevator
CN101476573B (zh) * 2009-01-06 2010-12-08 重庆跃进机械厂有限公司 一种集成式电液比例控制阀

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1484674A (en) * 1923-05-16 1924-02-26 Ingersoll Rand Co Pilot valve for compressors
US1710055A (en) * 1928-02-13 1929-04-23 Patrick M Grant Fluid-pressure-operated valve
US2266415A (en) * 1941-03-31 1941-12-16 Watson Stillman Co Press
US2616262A (en) * 1950-03-11 1952-11-04 Bendix Aviat Corp Hydraulic piston stop
US2737197A (en) * 1950-05-31 1956-03-06 Dover Corp Hydraulic control apparatus
DE1090116B (de) * 1954-05-29 1960-09-29 Teves Kg Alfred Bremsdruckregler in hydraulischen Bremsbetaetigungsanlagen fuer Fahrzeuge, insbesondere Kraftfahrzeuge
US3091932A (en) * 1958-05-07 1963-06-04 Delman Co Time delay device
US2984982A (en) * 1960-02-11 1961-05-23 Dover Corp Fluid transmission with control system therefor
US3120880A (en) * 1960-12-23 1964-02-11 Dover Corp Hydraulic drive and control for elevators
US3141386A (en) * 1962-01-15 1964-07-21 Robert F Loughridge Hydraulic control apparatus and systems
CH378127A (fr) * 1962-05-29 1964-05-31 Fleury Claude Dispositif de commande du mouvement d'un organe de machine
US3162092A (en) * 1962-07-09 1964-12-22 Tomkins Johnson Company Cylinder cushion structure
US3330110A (en) * 1965-07-06 1967-07-11 Bryce I Sprayberry Fluid flow control system
US3399689A (en) * 1965-10-18 1968-09-03 Victor Equipment Co Control valve including independently operable pilot valves
US3393508A (en) * 1966-09-26 1968-07-23 Itt Hydraulic actuator having position responsive relief valve means
US3729020A (en) * 1970-04-30 1973-04-24 L Koci Pressure relief and drain valve

Also Published As

Publication number Publication date
JPS49116475A (it) 1974-11-07
US4153074A (en) 1979-05-08
GB1464142A (en) 1977-02-09
DE2358057A1 (de) 1974-08-22
DE2358057C2 (de) 1984-09-06
GB1464141A (en) 1977-02-09
FR2217576B1 (it) 1979-01-26
GB1464143A (en) 1977-02-09
FR2217576A1 (it) 1974-09-06
SE395516B (sv) 1977-08-15
JPS6027842B2 (ja) 1985-07-01

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