GB1272083A - Improvements in or relating to variable displacement hydraulic motors - Google Patents

Improvements in or relating to variable displacement hydraulic motors

Info

Publication number
GB1272083A
GB1272083A GB21468/69A GB2146869A GB1272083A GB 1272083 A GB1272083 A GB 1272083A GB 21468/69 A GB21468/69 A GB 21468/69A GB 2146869 A GB2146869 A GB 2146869A GB 1272083 A GB1272083 A GB 1272083A
Authority
GB
United Kingdom
Prior art keywords
parts
eccentric
piston
splines
pistons
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
GB21468/69A
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.)
MIBIC R L Soc
Original Assignee
MIBIC R L Soc
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 MIBIC R L Soc filed Critical MIBIC R L Soc
Publication of GB1272083A publication Critical patent/GB1272083A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/04—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement
    • F03C1/0447—Controlling
    • F03C1/0457—Controlling by changing the effective piston stroke
    • F03C1/046—Controlling by changing the effective piston stroke by changing the excentricity of one element relative to another element

Abstract

1,272,083. Cams. MIBIC SOC. R.L. 28 April, 1969 [30 April, 1968; 6 July, 1968; 21 Dec., 1968], No. 21468/69. Heading F2K. [Also in Division F1] The eccentric driving the pistons of a radial cylinder hydraulic motor is composed of an inner eccentric part 7 and an outer eccentric part 8, the outer part 8 being rotatable on the inner part 7 and lockable in either of two extreme positions thereby to vary the overall eccentricity. The inner part 7 has opposed radial passages 19, 26 leading to opposite ends of an arcuate chamber 20 defined between inwardly extending and an outwardly extending abutments on the inner and outer parts. Thus selective pressurization and exhaust of the passages 19, 26 results in relative rotation between the eccentric parts. The parts are locked together by an annular piston 14, in a chamber 9<SP>1</SP> between the parts 7, 8, the pistons having inner and outer splines 11, 12 which engage in complementary splines provided in the parts 7, 8. Pressure in a passage 19 or 26 is arranged to displace the piston 14 to its unlocked position wherein the splines are disengaged. Pressurization of the other passage after adjustment has been effected causes the piston to move back to its locking position.
GB21468/69A 1968-04-30 1969-04-28 Improvements in or relating to variable displacement hydraulic motors Expired GB1272083A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT3666068 1968-04-30
IT3824668 1968-07-06
IT4215268 1968-12-21

Publications (1)

Publication Number Publication Date
GB1272083A true GB1272083A (en) 1972-04-26

Family

ID=27273586

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21468/69A Expired GB1272083A (en) 1968-04-30 1969-04-28 Improvements in or relating to variable displacement hydraulic motors

Country Status (5)

Country Link
US (1) US3610106A (en)
JP (1) JPS4812019B1 (en)
DE (1) DE1921976A1 (en)
FR (1) FR2007300A1 (en)
GB (1) GB1272083A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0342751A1 (en) * 1988-05-19 1989-11-23 Bruno Giamello Radial piston hydraulic motor of variable cylinder capacity
CN113530784A (en) * 2021-07-21 2021-10-22 余世亮 Novel variable radial plunger pump

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004498A (en) * 1974-02-12 1977-01-25 Nissei Plastics Industrial Co., Ltd. Hydraulic motor
US5136932A (en) * 1988-05-19 1992-08-11 Bruno Giamello Radial piston hydraulic motor of variable cylinder capacity
US5634777A (en) * 1990-06-29 1997-06-03 Albertin; Marc S. Radial piston fluid machine and/or adjustable rotor
NZ548297A (en) * 2003-12-15 2010-07-30 Hydrostatic Design Technology Hydraulic motor/pump with piston stroke length adjustment using concentric, eccentric cylinders offsetting the crankshaft
WO2010115019A1 (en) 2009-04-02 2010-10-07 Husco International, Inc. Fluid working machine with cylinders coupled to split exterior ports by electrohydraulic valves
US20120111185A1 (en) * 2009-05-26 2012-05-10 Husco International, Inc Compact Eccentric Radial Piston Hydraulic Machine
US10378357B2 (en) * 2015-01-20 2019-08-13 Eaton Intelligent Power Limited Hydraulic radial piston device with improved pressure transition mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0342751A1 (en) * 1988-05-19 1989-11-23 Bruno Giamello Radial piston hydraulic motor of variable cylinder capacity
CN113530784A (en) * 2021-07-21 2021-10-22 余世亮 Novel variable radial plunger pump

Also Published As

Publication number Publication date
FR2007300A1 (en) 1970-01-02
US3610106A (en) 1971-10-05
JPS4812019B1 (en) 1973-04-17
DE1921976A1 (en) 1969-11-20

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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