NZ218082A - Pressure referenced programmed flow control in a hydraulic valve - Google Patents

Pressure referenced programmed flow control in a hydraulic valve

Info

Publication number
NZ218082A
NZ218082A NZ21808286A NZ21808286A NZ218082A NZ 218082 A NZ218082 A NZ 218082A NZ 21808286 A NZ21808286 A NZ 21808286A NZ 21808286 A NZ21808286 A NZ 21808286A NZ 218082 A NZ218082 A NZ 218082A
Authority
NZ
New Zealand
Prior art keywords
flow control
hydraulic valve
programmed flow
pressure referenced
referenced
Prior art date
Application number
NZ21808286A
Other languages
English (en)
Inventor
G Fossati
H Terry
G Manco
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 NZ218082A publication Critical patent/NZ218082A/xx

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Types And Forms Of Lifts (AREA)
NZ21808286A 1985-11-18 1986-10-28 Pressure referenced programmed flow control in a hydraulic valve NZ218082A (en)

Applications Claiming Priority (4)

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

Publications (1)

Publication Number Publication Date
NZ218082A true NZ218082A (en) 1988-10-28

Family

ID=27505803

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ21808286A NZ218082A (en) 1985-11-18 1986-10-28 Pressure referenced programmed flow control in a hydraulic valve

Country Status (6)

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

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

Family Cites Families (8)

* 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
JPS5138136B2 (xx) * 1971-09-17 1976-10-20
JPS5326378B2 (xx) * 1972-03-15 1978-08-02
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
IT1138425B (it) * 1981-06-16 1986-09-17 Stigler Otis S P A Complesso elettro-fluidodinamico per l'azionamento di una cabina di un impianto ascensore
FI71710C (fi) * 1985-04-30 1987-02-09 Pentti Rita Elektriskt styrd ventilanordning.
US4726450A (en) * 1985-11-18 1988-02-23 Otis Elevator Company Hydraulic elevator with dynamically programmed motor-operated valve

Also Published As

Publication number Publication date
AU604000B2 (en) 1990-12-06
EP0227296A3 (en) 1989-03-22
FI864662A0 (fi) 1986-11-17
FI90036B (fi) 1993-09-15
CN1010970B (zh) 1990-12-26
DE3684262D1 (de) 1992-04-16
EP0227296B1 (en) 1992-03-11
CN86107735A (zh) 1987-06-17
EP0227296A2 (en) 1987-07-01
FI864662A (fi) 1987-05-19
FI90036C (fi) 1993-12-27
AU6518086A (en) 1987-05-21

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