AT293820B - Largely load-independent accuracy reversal on a hydraulic power drive for alternating movements, e.g. for machine tools and elevators - Google Patents

Largely load-independent accuracy reversal on a hydraulic power drive for alternating movements, e.g. for machine tools and elevators

Info

Publication number: AT293820B
Authority: AT; Austria
Prior art keywords: elevators; reversal; hydraulic power; power drive; machine tools
Prior art date: 1968-09-10

Application number

AT456569A

Other languages

German (de)

Original Assignee

Hydrel Ag

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.)

1968-09-10

Filing date

1969-05-13

Publication date

1971-10-25

1969-05-13 Application filed by Hydrel Ag filed Critical Hydrel Ag

1971-10-25 Application granted granted Critical

1971-10-25 Publication of AT293820B publication Critical patent/AT293820B/en

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)

AT456569A 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 AT293820B (en)

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
AT293820B true AT293820B (en)	1971-10-25

Family

ID=4394507

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
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

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

1968
- 1968-09-10 CH CH1369068A patent/CH477630A/en not_active IP Right Cessation
1969
- 1969-05-09 DE DE6918885U patent/DE6918885U/en not_active Expired
- 1969-05-13 AT AT456569A patent/AT293820B/en not_active IP Right Cessation
- 1969-05-21 SE SE6907169A patent/SE370892B/xx unknown
- 1969-06-03 JP JP44043000A patent/JPS4945669B1/ja active Pending
- 1969-06-11 US US832066A patent/US3593519A/en not_active Expired - Lifetime
- 1969-07-11 GB GB1229537D patent/GB1229537A/en not_active Expired
- 1969-07-28 FR FR6925762A patent/FR2017998A1/fr not_active Withdrawn

Also Published As

Publication number	Publication date
FR2017998A1 (en)	1970-05-29
CH477630A (en)	1969-08-31
JPS4945669B1 (en)	1974-12-05
DE1923740A1 (en)	1970-03-19
GB1229537A (en)	1971-04-21
DE6918885U (en)	1974-01-17
US3593519A (en)	1971-07-20
SE370892B (en)	1974-11-04
DE1923740B2 (en)	1972-09-21

Publication	Publication Date	Title
SE424275B (en)	1982-07-12	TOOL PISTON TOOLS
NL7512100A (en)	1976-04-21	HAND TOOL MACHINE.
NL144179B (en)	1974-12-16	TOOL MACHINE.
AT293820B (en)	1971-10-25	Largely load-independent accuracy reversal on a hydraulic power drive for alternating movements, e.g. for machine tools and elevators
CH502948A (en)	1971-02-15	Hydraulic drive device for a rope elevator
IT946406B (en)	1973-05-21	MACHINE TOOL EQUIPPED WITH A TOOL CHANGE DEVICE
AT293979B (en)	1971-11-10	Fluid-operated drive for impact drills or impact drills
AT241235B (en)	1965-07-12	Hydraulic drive for a press brake
CH556705A (en)	1974-12-13	MANIPULATING DEVICE ON A MACHINE TOOL.
NL177668C (en)	1985-11-01	HAND TOOL MACHINE.
SE391888B (en)	1977-03-07	PORTABLE TOOL MACHINE, SPECIAL MOTOR CHAIN SAW
AT276961B (en)	1969-12-10	Device on hydraulically, e.g. as a pump, motor or similar working machines
AT288117B (en)	1971-02-25	Tool for forging machines
AT271859B (en)	1969-06-25	Saw chain for a motor chain saw
IT958825B (en)	1973-10-30	HYDRAULIC PERCUSSION TOOL
CH502528A (en)	1971-01-31	Power tool, especially with a high-speed universal motor
CH547681A (en)	1974-04-11	SPINDLE ARRANGEMENT ON A MACHINE TOOL.
DK132538B (en)	1975-12-22	Hydraulic power or work machine.
AT320383B (en)	1975-02-10	Tool for through forging machines
FI45279C (en)	1972-04-10	Work tools for construction work machines.
IT984883B (en)	1974-11-20	MACHINE TOOL WITH TOOL CHANGE MECHANISM
CH553619A (en)	1974-09-13	INDEPENDENT LUBRICATION SYSTEM ON A MANUAL MACHINE TOOL.
AT291330B (en)	1971-07-12	Hydraulic actuator for the working tools of earthworking machines
CH534756A (en)	1973-03-15	Chain drive, especially for a textile machine
CH430625A (en)	1967-02-15	Hydraulic drive or working machine with rotating working cylinders axially arranged on a rotor

Legal Events

Date	Code	Title	Description
1977-11-15	ELJ	Ceased due to non-payment of the annual fee