ES435891A1 - Hydraulic device with rotor seal - Google Patents

Hydraulic device with rotor seal

Info

Publication number
ES435891A1
ES435891A1 ES435891A ES435891A ES435891A1 ES 435891 A1 ES435891 A1 ES 435891A1 ES 435891 A ES435891 A ES 435891A ES 435891 A ES435891 A ES 435891A ES 435891 A1 ES435891 A1 ES 435891A1
Authority
ES
Spain
Prior art keywords
rotor
end plate
seal
metal
high pressure
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
ES435891A
Other languages
Spanish (es)
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.)
Northrop Grumman Space and Mission Systems Corp
Original Assignee
TRW Inc
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 TRW Inc filed Critical TRW Inc
Publication of ES435891A1 publication Critical patent/ES435891A1/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/08—Axially-movable sealings for working fluids
    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/103—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member one member having simultaneously a rotational movement about its own axis and an orbital movement
    • F04C2/104—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member one member having simultaneously a rotational movement about its own axis and an orbital movement having an articulated driving shaft

Abstract

In an improved hydraulic device the leakage of fluid between a rotor and a first one of a pair of end plates is prevented by a metal-to-metal seal between the rotor and end plate. To maintain the seal, the rotor and end plate are urged together under the influence of high pressure fluid. In one embodiment of the invention, an annular seal formed of a ultrahigh molecular weight polyethylene is disposed on a side of the rotor opposite from the metal-to-metal seal. The annular rotor seal cooperates with a second end plate to form a cavity in which high pressure fluid is trapped to press the rotor firmly against the first end plate. In a second embodiment of the invention the seal is located on the opposite side of the first end plate from the rotor and cooperates with a fixed surface to form a cavity in which fluid under pressure is trapped. This relatively high pressure fluid presses the first end plate firmly against the rotor.
ES435891A 1974-03-22 1975-03-21 Hydraulic device with rotor seal Expired ES435891A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US453710A US3894821A (en) 1974-03-22 1974-03-22 Hydraulic device with rotor seal

Publications (1)

Publication Number Publication Date
ES435891A1 true ES435891A1 (en) 1977-03-16

Family

ID=23801732

Family Applications (1)

Application Number Title Priority Date Filing Date
ES435891A Expired ES435891A1 (en) 1974-03-22 1975-03-21 Hydraulic device with rotor seal

Country Status (8)

Country Link
US (1) US3894821A (en)
JP (1) JPS5534320Y2 (en)
CA (1) CA1018822A (en)
DK (1) DK148450C (en)
ES (1) ES435891A1 (en)
FR (1) FR2264992B1 (en)
GB (1) GB1481911A (en)
IT (1) IT1034595B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2606172C2 (en) * 1976-02-17 1983-12-22 Danfoss A/S, 6430 Nordborg Rotary piston machine for liquids
US4145167A (en) * 1976-02-17 1979-03-20 Danfoss A/S Gerotor machine with pressure balancing recesses in inner gear
US4171938A (en) * 1977-11-21 1979-10-23 Eaton Corporation Fluid pressure operated pump or motor
US4741681A (en) * 1986-05-01 1988-05-03 Bernstrom Marvin L Gerotor motor with valving in gerotor star
US5080567A (en) * 1989-11-30 1992-01-14 White Hydraulics, Inc. Gerator hydraulic device having seal with steel and resilient members
US6345969B1 (en) * 2000-06-28 2002-02-12 White Hydraulics, Inc. Increased capacity valving plates for a hydraulic motor
US7322808B2 (en) * 2005-05-18 2008-01-29 White Drive Products, Inc. Balancing plate—shuttle ball
US8500423B2 (en) * 2010-04-13 2013-08-06 Eaton Corporation Frame rotated hydraulic motor with improved parking brake
US9784107B2 (en) 2012-10-22 2017-10-10 Parker-Hannifin Corporation Hydraulic motor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US889247A (en) * 1906-10-03 1908-06-02 Concentric Engine And Mfg Company Rotary engine.
US3616882A (en) * 1970-02-05 1971-11-02 Trw Inc Hydraulic motor-pump assembly with built-in brake
US3671154A (en) * 1970-10-08 1972-06-20 Gen Motors Corp Epitrochoidal compressor
US3711225A (en) * 1971-08-26 1973-01-16 Gen Motors Corp Epitrochoidal compressor

Also Published As

Publication number Publication date
JPS5534320Y2 (en) 1980-08-14
DK148450C (en) 1985-11-25
DK148450B (en) 1985-07-08
GB1481911A (en) 1977-08-03
FR2264992B1 (en) 1980-03-28
IT1034595B (en) 1979-10-10
DK119375A (en) 1975-09-23
US3894821A (en) 1975-07-15
CA1018822A (en) 1977-10-11
AU7946175A (en) 1976-09-30
FR2264992A1 (en) 1975-10-17
JPS50122901U (en) 1975-10-07

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