EP0227296A3 - Pressure-referenced programmed flow control in a hydraulic valve - Google Patents
Pressure-referenced programmed flow control in a hydraulic valve Download PDFInfo
- 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
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)
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US79966585A | 1985-11-18 | 1985-11-18 | |
US79976585A | 1985-11-18 | 1985-11-18 | |
US799765 | 1985-11-18 | ||
US799665 | 1985-11-18 | ||
US853286 | 1986-04-17 | ||
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 |
US853284 | 1992-03-18 |
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)
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)
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)
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 |
-
1986
- 1986-10-28 NZ NZ21808286A patent/NZ218082A/en unknown
- 1986-11-14 AU AU65180/86A patent/AU604000B2/en not_active Ceased
- 1986-11-17 CN CN 86107735 patent/CN1010970B/en not_active Expired
- 1986-11-17 FI FI864662A patent/FI90036C/en not_active IP Right Cessation
- 1986-11-18 DE DE8686308993T patent/DE3684262D1/en not_active Expired - Lifetime
- 1986-11-18 EP EP19860308993 patent/EP0227296B1/en not_active Expired
Patent Citations (5)
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 |
---|---|
AU6518086A (en) | 1987-05-21 |
CN1010970B (en) | 1990-12-26 |
DE3684262D1 (en) | 1992-04-16 |
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 |
FI864662A0 (en) | 1986-11-17 |
FI90036C (en) | 1993-12-27 |
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