GB1392404A - Hydraulic systems including an electric motor driven pump - Google Patents

Hydraulic systems including an electric motor driven pump

Info

Publication number
GB1392404A
GB1392404A GB771973A GB771973A GB1392404A GB 1392404 A GB1392404 A GB 1392404A GB 771973 A GB771973 A GB 771973A GB 771973 A GB771973 A GB 771973A GB 1392404 A GB1392404 A GB 1392404A
Authority
GB
United Kingdom
Prior art keywords
motor
valve
pressure
piston
energize
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
GB771973A
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.)
Parker Hannifin Corp
Original Assignee
Parker Hannifin 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 Parker Hannifin Corp filed Critical Parker Hannifin Corp
Publication of GB1392404A publication Critical patent/GB1392404A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B30B15/166—Electrical control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • 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

Abstract

1392404 Rotary positive-displacement machines; fluid-pressure apparatus PARKERHANNIFIN CORP 16 Feb 1973 [20 March 1972] 7719/73 Headings F1F and F1P An hydraulic system, e.g. for operating an hydraulic motor in a refuse compactor in which the load resistance increases progressively during the working stroke, comprises a fixed displacement pump 3, e.g. a gear-pump, driven by a series wound electric motor 4 supplied by an A.C. source via a rectifier 24, such that at any load resistance between minimum and maximum the product of the pump output flow and output pressure is approximately constant. In operation of the refuse compactor system shown, a switch button 28 is depressed to energize motor 4 and solenoid valve 10, pump 3 then supplying fluid via valve 10 to move compactor piston 17 downwardly, a pilotoperated check valve 12 being opened, by pilot pressure via conduit 34, for return of fluid below the motor piston to reservoir 5 via solenoid valve 11. As piston 17 moves downwardly, switch 26 closes to energize holding relay 27 to maintain energization of motor 4. At the end of the downward stroke of motor 2, the pressure build-up in line 15 operates pressure switch 32 to de-energize valve 10 and energize valve 11, the return stroke of piston 17 then taking place. At the end of the return stroke, switch 26 is opened by piston 17 to de-energize motor 4. A pressure-relief valve 14 is provided. Pressure switch 32 may be replaced by a sequence valve. Motor 4, pump 3, reservoir 5 and a valve block form an integrated unit, Fig. 1 (not shown).
GB771973A 1972-03-20 1973-02-16 Hydraulic systems including an electric motor driven pump Expired GB1392404A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23639272A 1972-03-20 1972-03-20

Publications (1)

Publication Number Publication Date
GB1392404A true GB1392404A (en) 1975-04-30

Family

ID=22889301

Family Applications (1)

Application Number Title Priority Date Filing Date
GB771973A Expired GB1392404A (en) 1972-03-20 1973-02-16 Hydraulic systems including an electric motor driven pump

Country Status (7)

Country Link
US (1) US3788076A (en)
AU (1) AU5262173A (en)
CA (1) CA969835A (en)
DE (1) DE2312967A1 (en)
FR (1) FR2177360A5 (en)
GB (1) GB1392404A (en)
IT (1) IT981242B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171351A (en) * 1985-02-27 1986-08-28 Tench Main Limited Fastener dispensing and affixing device
EP0752304A1 (en) * 1995-07-04 1997-01-08 Battenfeld GmbH Hydraulic system for plastic processing machines, especially for injection moulding machines

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142369A (en) * 1976-05-04 1979-03-06 Fmc Corporation Multiple speed hoisting system with pressure protection and load control
DE2850883B2 (en) * 1978-11-24 1981-03-19 Frieseke & Hoepfner Gmbh, 8520 Erlangen Pressure-regulated hydraulic unit with an electric motor and a constant current pump
SE435750B (en) * 1979-06-15 1984-10-15 Akermans Verkstad Ab DEVICE FOR RESTRICTING FROM A HYDRAULIC DEVICE WITHOUT POWER
SE461391B (en) * 1987-10-28 1990-02-12 Bt Ind Ab HYDRAULIC LIFTING DEVICE
US5579684A (en) * 1993-02-26 1996-12-03 Stribling Systems, Inc. Efficient compaction system
JP3220637B2 (en) * 1996-03-21 2001-10-22 日興電機工業株式会社 Hydraulic power unit device
AT409949B (en) * 1997-03-07 2002-12-27 Weber Gisela CONTROL DEVICE FOR HYDRAULIC WORK CYLINDERS
DE10354205A1 (en) * 2003-11-20 2005-06-23 Leybold Vakuum Gmbh Method for controlling a drive motor of a vacuum displacement pump

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1911138A (en) * 1930-06-04 1933-05-23 Oilgear Co Drilling machine
US2276358A (en) * 1938-10-15 1942-03-17 Vickers Inc Power saving pump jack
US2324727A (en) * 1941-01-10 1943-07-20 Vickers Inc Power transmission
US2663143A (en) * 1949-05-11 1953-12-22 Joy Mfg Co Materials handling apparatus
US3451217A (en) * 1968-01-10 1969-06-24 Zyrotron Ind Inc Fluid control system
US3507868A (en) * 1968-10-21 1970-04-21 Sandoz Ag Imidazo(2,1-b)thiazoles and thiazolo(3,2-a)pyrimidines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171351A (en) * 1985-02-27 1986-08-28 Tench Main Limited Fastener dispensing and affixing device
EP0752304A1 (en) * 1995-07-04 1997-01-08 Battenfeld GmbH Hydraulic system for plastic processing machines, especially for injection moulding machines
US5762973A (en) * 1995-07-04 1998-06-09 Battenfeld Gmbh Hydraulic operating system for plastics processing machines, especially for injection molding machines

Also Published As

Publication number Publication date
IT981242B (en) 1974-10-10
CA969835A (en) 1975-06-24
FR2177360A5 (en) 1973-11-02
DE2312967A1 (en) 1973-09-27
US3788076A (en) 1974-01-29
AU5262173A (en) 1974-08-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees