DE3684262D1 - PRESSURE PROGRAMMED FLOW CONTROL IN A HYDRAULIC VALVE. - Google Patents

PRESSURE PROGRAMMED FLOW CONTROL IN A HYDRAULIC VALVE.

Info

Publication number
DE3684262D1
DE3684262D1 DE8686308993T DE3684262T DE3684262D1 DE 3684262 D1 DE3684262 D1 DE 3684262D1 DE 8686308993 T DE8686308993 T DE 8686308993T DE 3684262 T DE3684262 T DE 3684262T DE 3684262 D1 DE3684262 D1 DE 3684262D1
Authority
DE
Germany
Prior art keywords
flow control
hydraulic valve
programmed flow
pressure programmed
pressure
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 - Lifetime
Application number
DE8686308993T
Other languages
German (de)
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.)
Otis Elevator Co
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
Application granted granted Critical
Publication of DE3684262D1 publication Critical patent/DE3684262D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Types And Forms Of Lifts (AREA)
DE8686308993T 1985-11-18 1986-11-18 PRESSURE PROGRAMMED FLOW CONTROL IN A HYDRAULIC VALVE. Expired - Lifetime DE3684262D1 (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
DE3684262D1 true DE3684262D1 (en) 1992-04-16

Family

ID=27505803

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686308993T Expired - Lifetime DE3684262D1 (en) 1985-11-18 1986-11-18 PRESSURE 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

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 (en) * 1971-09-17 1976-10-20
JPS5326378B2 (en) * 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 (en) * 1981-06-16 1986-09-17 Stigler Otis S P A ELECTRO-FLUID DYNAMIC COMPLEX FOR THE OPERATION OF A CABIN OF AN ELEVATOR SYSTEM
FI71710C (en) * 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
AU6518086A (en) 1987-05-21
CN1010970B (en) 1990-12-26
CN86107735A (en) 1987-06-17
FI90036B (en) 1993-09-15
EP0227296B1 (en) 1992-03-11
EP0227296A2 (en) 1987-07-01
AU604000B2 (en) 1990-12-06
NZ218082A (en) 1988-10-28
FI864662A (en) 1987-05-19
EP0227296A3 (en) 1989-03-22
FI864662A0 (en) 1986-11-17
FI90036C (en) 1993-12-27

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee