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GB1259389A - - Google Patents

Info

Publication number
GB1259389A
GB1259389A GB1259389DA GB1259389A GB 1259389 A GB1259389 A GB 1259389A GB 1259389D A GB1259389D A GB 1259389DA GB 1259389 A GB1259389 A GB 1259389A
Authority
GB
United Kingdom
Prior art keywords
rotor
abutments
orifice
pressure
aug
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
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 filed Critical
Publication of GB1259389A publication Critical patent/GB1259389A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • F04C14/26—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/60—Shafts
    • F04C2240/603—Shafts with internal channels for fluid distribution, e.g. hollow shaft

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Reciprocating Pumps (AREA)

Abstract

1,259,389. Rotary positive-displacement pumps. TOYODA KOKI K.K. [trading as TOYODA MACHINE WORKS Ltd.] Aug. 26, 1969 [Aug. 26, 1968], No.42545/69. Heading F1F. A hydraulic pump has a non-circular cylindrical rotor 3 in a circular-cylindrical bore 2, spring- loaded abutments 12 to establish working chambers A1--A4, fixed discs 4, 5 with annular grooves 21, 27, and suction and discharge ports 24, 29 connected to recesses 16, 17 by way of said grooves. Notches 12a cause pressure-loading of the abutments. A centrifigually-operated by-pass valve FC connects the recesses to each other at a predetermined rotor speed through an orifice 41 and holes 53 in a member 40 so as to keep the flow-rate at the port 29 substantially constant. A pressure-balancing groove 32 can be connected to the port 24 by a pressure-relief valve, Fig.5 (not shown). A second embodiment, Figs, 7 to 9 (not shown), differs largely in that the orifice 41 is replaced in effect by an orifice in a passage 20. A third embodiment, Figs. 10 to 12 (not shown), differs mainly in that there are six abutments, a simplified system of passages in the rotor and a tank for working fluid surrounding one end of the housing. The rotor may be fixed and the housing rotatable, in which case the abutments are lodged in the "rotor",
GB1259389D 1968-08-26 1969-08-26 Expired GB1259389A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP43061093A JPS5028645B1 (en) 1968-08-26 1968-08-26

Publications (1)

Publication Number Publication Date
GB1259389A true GB1259389A (en) 1972-01-05

Family

ID=13161106

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1259389D Expired GB1259389A (en) 1968-08-26 1969-08-26

Country Status (5)

Country Link
US (1) US3600108A (en)
JP (1) JPS5028645B1 (en)
DE (1) DE1943203A1 (en)
FR (1) FR2016383A1 (en)
GB (1) GB1259389A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3663125A (en) * 1970-11-23 1972-05-16 Lucas Industries Ltd Hydraulic pump
DE2318080A1 (en) * 1973-04-11 1974-10-31 Teves Gmbh Alfred PRESSURE MEDIUM PUMP
DE2807301A1 (en) * 1978-02-21 1979-08-23 Audi Nsu Auto Union Ag DEVICE FOR CAPACITY CONTROL IN A ROTARY PISTON COMPRESSOR
US4938024A (en) * 1988-02-18 1990-07-03 Honda Giken Kogyo Kabushiki Kaisha Hydrostatic continuously variable transmission
DE4203983A1 (en) * 1992-02-11 1992-08-20 Ulf Greufe DEVICE AND METHOD FOR IMPROVING THE PERFORMANCE DIGIT IN THE REFRIGERANT CIRCUIT
GB2447627B (en) * 2007-03-20 2011-05-25 Ford Global Tech Llc A check valve for a vacuum pump

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1198716A (en) * 1966-12-17 1970-07-15 Toyoda Machine Works Ltd Improvements in or relating to Rotary Pumps.

Also Published As

Publication number Publication date
US3600108A (en) 1971-08-17
DE1943203A1 (en) 1970-04-23
FR2016383A1 (en) 1970-05-08
JPS5028645B1 (en) 1975-09-17

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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