CA1040552A - Hydraulic elevator apparatus - Google Patents

Hydraulic elevator apparatus

Info

Publication number
CA1040552A
CA1040552A CA262,756A CA262756A CA1040552A CA 1040552 A CA1040552 A CA 1040552A CA 262756 A CA262756 A CA 262756A CA 1040552 A CA1040552 A CA 1040552A
Authority
CA
Canada
Prior art keywords
plunger
fluid
seal
cylinder head
end member
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
Application number
CA262,756A
Other languages
English (en)
French (fr)
Inventor
Joseph K. Kraft
Jean-Marie L. Mean
Leigh F. Jackson
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.)
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Application granted granted Critical
Publication of CA1040552A publication Critical patent/CA1040552A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/028—Safety devices separate from control system in case of power failure, for hydraulical lifts, e.g. braking the hydraulic jack

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Actuator (AREA)
  • Types And Forms Of Lifts (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
CA262,756A 1975-11-20 1976-10-05 Hydraulic elevator apparatus Expired CA1040552A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/633,999 US4041845A (en) 1975-11-20 1975-11-20 Hydraulic elevator apparatus

Publications (1)

Publication Number Publication Date
CA1040552A true CA1040552A (en) 1978-10-17

Family

ID=24542024

Family Applications (1)

Application Number Title Priority Date Filing Date
CA262,756A Expired CA1040552A (en) 1975-11-20 1976-10-05 Hydraulic elevator apparatus

Country Status (3)

Country Link
US (1) US4041845A (enExample)
JP (1) JPS5264744A (enExample)
CA (1) CA1040552A (enExample)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH654634A5 (de) * 1981-12-14 1986-02-28 Inventio Ag Daempfender anschlag in hydraulik-heber.
JPS59212504A (ja) * 1983-05-19 1984-12-01 Toshiba Corp 油圧エレベ−タの油圧装置
US4841846A (en) * 1986-02-24 1989-06-27 Grambling William D Pneumatic actuators with liquid seals for oil and gas well swabs
US4735291A (en) * 1986-12-11 1988-04-05 Westinghouse Electric Corp. Hydraulic jack assembly for a hydraulic elevator
US4867460A (en) * 1987-12-31 1989-09-19 Westinghouse Electric Corp. Hydraulic jack seal assembly
US5810118A (en) * 1995-08-30 1998-09-22 Blain; Roy W. Elevator position lock
SG75168A1 (en) * 1998-05-08 2000-09-19 Inventio Ag Hydraulic elevator
US6704963B1 (en) * 2002-11-13 2004-03-16 Dew Engineering And Development Limited Failsafe support for height adjustable passenger loading bridges
US20070080501A1 (en) * 2005-09-16 2007-04-12 Bal Seal Engineering Co., Inc. Pressure gradient rotary sealing system
US20080067754A1 (en) * 2006-09-14 2008-03-20 John Schroeder Pressure gradient rotary sealing system with external piston
NO20075970A (no) * 2007-11-20 2008-12-15 Ottestad Breathing Syst As Trykkavfølende element
EP2495208A1 (en) 2011-03-01 2012-09-05 BC Lift A/S Lift system

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US531792A (en) * 1895-01-01 Elevator apparatus
US559526A (en) * 1896-05-05 Hydraulic elevator
US244092A (en) * 1881-07-12 Hydraulic elevator
US564620A (en) * 1896-07-28 Hydraulic-elevator apparatus
US1081690A (en) * 1905-06-07 1913-12-16 Otis Elevator Co Automatic plunger-elevator.
US963905A (en) * 1909-12-16 1910-07-12 Fred A Jones Plunger hydraulic elevator.
US1831136A (en) * 1929-08-26 1931-11-10 California Bank Shock absorbing device for aeroplanes
GB469473A (en) * 1935-11-23 1937-07-23 Fritz Faudi Improvements in shock-absorbing struts for aircraft undercarriages
US2998288A (en) * 1959-12-30 1961-08-29 Clark Equipment Co Piston
US3067726A (en) * 1961-02-27 1962-12-11 Int Basic Economy Corp Cushioning structure for fluid power cylinders
US3267815A (en) * 1965-10-21 1966-08-23 Ortman Miller Machine Company Cushioning structure for power cylinders
FR2220700B1 (enExample) * 1973-03-08 1976-09-10 Poclain Sa

Also Published As

Publication number Publication date
US4041845A (en) 1977-08-16
JPS5515390B2 (enExample) 1980-04-23
JPS5264744A (en) 1977-05-28

Similar Documents

Publication Publication Date Title
CA1040552A (en) Hydraulic elevator apparatus
KR100456222B1 (ko) 텐셔너
US4253481A (en) Cushioned shuttle valve
KR920003661Y1 (ko) 완충기
US4985009A (en) Tensioning device for chain or belt drives
US4424737A (en) Stroke cushioning apparatus for hydraulic cylinders
AU609219B2 (en) Hydraulic jack
US20190017565A1 (en) Recoil suppressing hydraulic damper for a train coupler
JPH0377646B2 (enExample)
US6234929B1 (en) Tensioner
JPH02102901A (ja) 空気油圧増圧式の圧力変換器の圧油充填法及びその方法を実施するための装置
GB2070192A (en) Gas springs
US6322058B1 (en) Air suspension apparatus
US3877344A (en) Cushioned hydraulic actuator
CA1040024A (en) Fluid motor construction
US4162062A (en) Hydraulic railway car sway damper
US4325407A (en) Pressure control unit
US5927178A (en) Press driven tool actuator module
US3971551A (en) Shock absorber
EP0089286B1 (en) Liquid spring accumulator with self-charging means
GB2092717A (en) Hydraulic control valve assembly
US3681918A (en) Piston accumulator and system using the same for use with high pressure hydraulic apparatus
DE3300771C1 (de) Gasdruckdämpfer in Zweirohr-Teleskop-Bauart
EP1057550A2 (en) Press driven tool actuator module
SU1479759A2 (ru) Гидравлический упругий элемент