GB1392404A - Hydraulic systems including an electric motor driven pump - Google Patents
Hydraulic systems including an electric motor driven pumpInfo
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
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).
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)
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)
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)
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 |
-
1972
- 1972-03-20 US US00236392A patent/US3788076A/en not_active Expired - Lifetime
-
1973
- 1973-02-16 GB GB771973A patent/GB1392404A/en not_active Expired
- 1973-02-27 AU AU52621/73A patent/AU5262173A/en not_active Expired
- 1973-03-09 IT IT21367/73A patent/IT981242B/en active
- 1973-03-15 DE DE2312967A patent/DE2312967A1/en active Pending
- 1973-03-15 CA CA166,948A patent/CA969835A/en not_active Expired
- 1973-03-20 FR FR7309960A patent/FR2177360A5/fr not_active Expired
Cited By (3)
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 |
---|---|
DE2312967A1 (en) | 1973-09-27 |
IT981242B (en) | 1974-10-10 |
FR2177360A5 (en) | 1973-11-02 |
AU5262173A (en) | 1974-08-29 |
CA969835A (en) | 1975-06-24 |
US3788076A (en) | 1974-01-29 |
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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 |