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CH477630A - At least approximately load-independent accuracy reversal on a hydraulic power drive for alternating movements of a work organ, for example in machine tools and elevators - Google Patents

At least approximately load-independent accuracy reversal on a hydraulic power drive for alternating movements of a work organ, for example in machine tools and elevators

Info

Publication number
CH477630A
CH477630A CH1369068A CH1369068A CH477630A CH 477630 A CH477630 A CH 477630A CH 1369068 A CH1369068 A CH 1369068A CH 1369068 A CH1369068 A CH 1369068A CH 477630 A CH477630 A CH 477630A
Authority
CH
Switzerland
Prior art keywords
elevators
reversal
hydraulic power
power drive
machine tools
Prior art date
Application number
CH1369068A
Other languages
German (de)
Inventor
Fuhrimann Paul
Original Assignee
Hydrel Ag Maschf
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 Hydrel Ag Maschf filed Critical Hydrel Ag Maschf
Priority to CH1369068A priority Critical patent/CH477630A/en
Priority to DE6918885U priority patent/DE6918885U/en
Priority to DE19691923740 priority patent/DE1923740C/en
Priority to AT456569A priority patent/AT293820B/en
Priority to SE6907169A priority patent/SE370892B/xx
Priority to JP44043000A priority patent/JPS4945669B1/ja
Priority to US832066A priority patent/US3593519A/en
Priority to GB1229537D priority patent/GB1229537A/en
Priority to FR6925762A priority patent/FR2017998A1/fr
Publication of CH477630A publication Critical patent/CH477630A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/027—Driving main working members reciprocating members
    • B23Q5/033—Driving main working members reciprocating members driven essentially by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/46—Automatic regulation in accordance with output requirements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/46—Automatic regulation in accordance with output requirements
    • F16H61/47—Automatic regulation in accordance with output requirements for achieving a target output speed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S60/00—Power plants
    • Y10S60/911—Fluid motor system incorporating electrical system

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Fluid Gearings (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Types And Forms Of Lifts (AREA)
CH1369068A 1968-09-10 1968-09-10 At least approximately load-independent accuracy reversal on a hydraulic power drive for alternating movements of a work organ, for example in machine tools and elevators CH477630A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
CH1369068A CH477630A (en) 1968-09-10 1968-09-10 At least approximately load-independent accuracy reversal on a hydraulic power drive for alternating movements of a work organ, for example in machine tools and elevators
DE6918885U DE6918885U (en) 1968-09-10 1969-05-09 DEVICE FOR REVOLVING A MACHINE OR ELEVATOR PART
DE19691923740 DE1923740C (en) 1968-09-10 1969-05-09 Device for reversing a machine or elevator part
AT456569A AT293820B (en) 1968-09-10 1969-05-13 Largely load-independent accuracy reversal on a hydraulic power drive for alternating movements, e.g. for machine tools and elevators
SE6907169A SE370892B (en) 1968-09-10 1969-05-21
JP44043000A JPS4945669B1 (en) 1968-09-10 1969-06-03
US832066A US3593519A (en) 1968-09-10 1969-06-11 Device for precision reversing in a manner substantially independent of load, for use in a hydraulic power drive for reciprocating movements, for instance for machine tools and elevators
GB1229537D GB1229537A (en) 1968-09-10 1969-07-11
FR6925762A FR2017998A1 (en) 1968-09-10 1969-07-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1369068A CH477630A (en) 1968-09-10 1968-09-10 At least approximately load-independent accuracy reversal on a hydraulic power drive for alternating movements of a work organ, for example in machine tools and elevators

Publications (1)

Publication Number Publication Date
CH477630A true CH477630A (en) 1969-08-31

Family

ID=4394507

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1369068A CH477630A (en) 1968-09-10 1968-09-10 At least approximately load-independent accuracy reversal on a hydraulic power drive for alternating movements of a work organ, for example in machine tools and elevators

Country Status (8)

Country Link
US (1) US3593519A (en)
JP (1) JPS4945669B1 (en)
AT (1) AT293820B (en)
CH (1) CH477630A (en)
DE (1) DE6918885U (en)
FR (1) FR2017998A1 (en)
GB (1) GB1229537A (en)
SE (1) SE370892B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5133061U (en) * 1974-08-30 1976-03-11
DE3710028A1 (en) * 1987-03-27 1988-10-06 Delmag Maschinenfabrik PRESSURE DRIVER
EP0319089B1 (en) * 1987-11-28 1995-03-15 Hitachi Construction Machinery Co., Ltd. Safety device for hydraulic closed circuit
US6145312A (en) 1998-12-30 2000-11-14 Hydro-Gear Limited Partnership Electro-mechanical bypass for hydrostatic transmission
US6735943B1 (en) 1998-12-30 2004-05-18 Hydro-Gear Limited Partnership Bypass for a hydraulic device
US7007467B1 (en) * 1998-12-30 2006-03-07 Hydro-Gear Limited Partnership Bypass for a hydraulic device
US7275371B1 (en) 1998-12-30 2007-10-02 Hydro-Gear Limited Patnership Bypass for a hydraulic device
US6430923B1 (en) * 2000-08-18 2002-08-13 Sauer-Danfoss Inc. Loop flushing circuit
US6672843B1 (en) 2002-04-08 2004-01-06 Hydro-Gear Limited Partnership Dual pump apparatus comprising dual drive shafts and auxiliary pump
US6953327B1 (en) 2003-03-11 2005-10-11 Hydro-Gear Limited Partnership Dual pump
US20040187491A1 (en) * 2003-03-26 2004-09-30 Whitaker James S. Pump with hot oil shuttle valve
US8205444B2 (en) * 2008-10-21 2012-06-26 Caterpillar Inc. Hydrostatic pump and motor with improved torque reversal characteristics

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1948951A (en) * 1929-08-21 1934-02-27 Walker Brooks Hydraulic power unit
US2299686A (en) * 1940-01-15 1942-10-20 Hydraulic Dev Corp Inc Hydraulic press
US2324727A (en) * 1941-01-10 1943-07-20 Vickers Inc Power transmission
US2419563A (en) * 1942-12-11 1947-04-29 Hydraulic Dev Corp Inc Hydraulic press for stepwise drawing of metal
US2388369A (en) * 1944-10-30 1945-11-06 Shendrick Constantine Fluid control valve

Also Published As

Publication number Publication date
FR2017998A1 (en) 1970-05-29
JPS4945669B1 (en) 1974-12-05
DE1923740A1 (en) 1970-03-19
GB1229537A (en) 1971-04-21
AT293820B (en) 1971-10-25
DE6918885U (en) 1974-01-17
US3593519A (en) 1971-07-20
SE370892B (en) 1974-11-04
DE1923740B2 (en) 1972-09-21

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Legal Events

Date Code Title Description
PL Patent ceased