EP0227296A3 - Pressure-referenced programmed flow control in a hydraulic valve - Google Patents

Pressure-referenced programmed flow control in a hydraulic valve Download PDF

Info

Publication number
EP0227296A3
EP0227296A3 EP86308993A EP86308993A EP0227296A3 EP 0227296 A3 EP0227296 A3 EP 0227296A3 EP 86308993 A EP86308993 A EP 86308993A EP 86308993 A EP86308993 A EP 86308993A EP 0227296 A3 EP0227296 A3 EP 0227296A3
Authority
EP
European Patent Office
Prior art keywords
referenced
pressure
flow control
hydraulic valve
programmed flow
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.)
Granted
Application number
EP86308993A
Other versions
EP0227296A2 (en
EP0227296B1 (en
Inventor
Giorgio Fossati
Giuseppe Manco
Harold Terry
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.)
Atto Di Licenza otis SpA - Calzolari Ascensore
Original Assignee
Otis Elevator 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
Priority claimed from US06/853,286 external-priority patent/US4674527A/en
Priority claimed from US06/853,284 external-priority patent/US4700748A/en
Application filed by Otis Elevator Co filed Critical Otis Elevator Co
Publication of EP0227296A2 publication Critical patent/EP0227296A2/en
Publication of EP0227296A3 publication Critical patent/EP0227296A3/en
Application granted granted Critical
Publication of EP0227296B1 publication Critical patent/EP0227296B1/en
Expired legal-status Critical Current

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
EP19860308993 1985-11-18 1986-11-18 Pressure-referenced programmed flow control in a hydraulic valve Expired EP0227296B1 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US79976585A 1985-11-18 1985-11-18
US79966585A 1985-11-18 1985-11-18
US799665 1985-11-18
US799765 1985-11-18
US853284 1986-04-17
US06/853,286 US4674527A (en) 1985-11-18 1986-04-17 Pressure relieving linear motion valve
US853286 1986-04-17
US06/853,284 US4700748A (en) 1985-11-18 1986-04-17 Pressure-referenced programmed flow control in a hydraulic valve

Publications (3)

Publication Number Publication Date
EP0227296A2 EP0227296A2 (en) 1987-07-01
EP0227296A3 true EP0227296A3 (en) 1989-03-22
EP0227296B1 EP0227296B1 (en) 1992-03-11

Family

ID=27505803

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860308993 Expired EP0227296B1 (en) 1985-11-18 1986-11-18 Pressure-referenced programmed flow control in a hydraulic valve

Country Status (6)

Country Link
EP (1) EP0227296B1 (en)
CN (1) CN1010970B (en)
AU (1) AU604000B2 (en)
DE (1) DE3684262D1 (en)
FI (1) FI90036C (en)
NZ (1) NZ218082A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4694935A (en) * 1986-10-17 1987-09-22 Cemco, Inc. Self-adjusting control valve for elevators
US5014824A (en) * 1990-01-19 1991-05-14 Otis Elevator Company Hydraulic elevator control valve
US5082091A (en) * 1990-01-19 1992-01-21 Otis Elevator Company Hydraulic elevator control

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892292A (en) * 1971-09-17 1975-07-01 Hitachi Ltd Hydraulic elevators
CH578478A5 (en) * 1974-06-11 1976-08-13 Sig Schweiz Industrieges Hydraulically operated platform control system - has motor driving screwed spindle passing through control plunger
US3977497A (en) * 1975-02-26 1976-08-31 Armor Elevator Company, Inc. Hydraulic elevator drive system
US4418794A (en) * 1981-06-16 1983-12-06 Otis Elevator Company Electromechanical control for hydraulic elevators
WO1986006359A1 (en) * 1985-04-30 1986-11-06 Pentti Rita Electrically controlled valve apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3391702A (en) * 1965-12-14 1968-07-09 Gen Electric Liquid flow systems
JPS5326378B2 (en) * 1972-03-15 1978-08-02
US4726450A (en) * 1985-11-18 1988-02-23 Otis Elevator Company Hydraulic elevator with dynamically programmed motor-operated valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892292A (en) * 1971-09-17 1975-07-01 Hitachi Ltd Hydraulic elevators
CH578478A5 (en) * 1974-06-11 1976-08-13 Sig Schweiz Industrieges Hydraulically operated platform control system - has motor driving screwed spindle passing through control plunger
US3977497A (en) * 1975-02-26 1976-08-31 Armor Elevator Company, Inc. Hydraulic elevator drive system
US4418794A (en) * 1981-06-16 1983-12-06 Otis Elevator Company Electromechanical control for hydraulic elevators
WO1986006359A1 (en) * 1985-04-30 1986-11-06 Pentti Rita Electrically controlled valve apparatus

Also Published As

Publication number Publication date
CN1010970B (en) 1990-12-26
DE3684262D1 (en) 1992-04-16
FI864662A (en) 1987-05-19
FI90036C (en) 1993-12-27
AU6518086A (en) 1987-05-21
NZ218082A (en) 1988-10-28
EP0227296A2 (en) 1987-07-01
AU604000B2 (en) 1990-12-06
CN86107735A (en) 1987-06-17
FI90036B (en) 1993-09-15
EP0227296B1 (en) 1992-03-11
FI864662A0 (en) 1986-11-17

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