GB1249732A – Radial piston type hydraulic pump or motor
– Google Patents
GB1249732A – Radial piston type hydraulic pump or motor
– Google Patents
Radial piston type hydraulic pump or motor
Info
Publication number
GB1249732A
GB1249732A
GB5138/69A
GB513869A
GB1249732A
GB 1249732 A
GB1249732 A
GB 1249732A
GB 5138/69 A
GB5138/69 A
GB 5138/69A
GB 513869 A
GB513869 A
GB 513869A
GB 1249732 A
GB1249732 A
GB 1249732A
Authority
GB
United Kingdom
Prior art keywords
cylinder
piston
passages
pressure liquid
motor
Prior art date
1968-02-05
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
GB5138/69A
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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.)
1968-02-05
Filing date
1969-01-30
Publication date
1971-10-13
1968-02-05
Priority claimed from JP743668U
external-priority
patent/JPS4734888Y1/ja
1968-02-21
Priority claimed from JP1223568U
external-priority
patent/JPS4719773Y1/ja
1968-02-21
Priority claimed from JP1223668U
external-priority
patent/JPS4734889Y1/ja
1969-01-30
Application filed by Hitachi Ltd
filed
Critical
Hitachi Ltd
1971-10-13
Publication of GB1249732A
publication
Critical
patent/GB1249732A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
F01B1/00—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements
F01B1/06—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with cylinders in star or fan arrangement
F01B1/0641—Details, component parts specially adapted for such machines
F01B1/0644—Pistons
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
F02B1/00—Engines characterised by fuel-air mixture compression
F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
Abstract
1,249,732. Radial cylinder pumps or motors. HITACHI Ltd. Jan.30, 1969 [Feb. 5, 1968; Feb.21, 1968 (2)], No.5138/69. Heading F1A. In an inwardly acting radial cylinder pump or motor in which the pistons carry balls or rollers 9 and are reciprocated by a multilobed cam 11, the side thrust force F1 which is exerted by each piston on its associated cylinder wall on the outward stroke is counterbalanced by the admission of pressure liquid between the piston and cylinder at the position of application of that force. As shown in Fig. 3 a cylinder block having cylinders 2 rotates with a shaft 1 Fig. 1 (not shown) and has secured thereto an annular valve member 14 rotatable about a valve surface 20 of a valve body 19 secured to the casing (10), the valve body 19, for motor operation, alternately supplying and exhausting pressure liquid from the working chamber 13 via passages 14, and supply passage 21 on the pressure stroke, and passages 14 and exhaust passage 22 on the exhaust stroke. With the motor rotating anti-clockwise pressure liquid is admitted to chamber 13 and also passes through supply passages 21, 31 communicating on the outward stroke with distribution recesses 41 open via passage 33 to the opening 35 in the cylinder 2 to counterbalance the thrust force F1 When the motor rotates clockwise the thrust force acts on the opposite wall of the cylinder and is counterbalanced through opening 36. In alternative constructions the passages supplying pressure liquid to the gaps between the piston and cylinder are located within the piston and maybe provided with spring-loaded lift valves which automatically control the flow of liquid according to the gap between the piston and cylinder. In a further embodiment the passages are located in the cylinder and have restrictions controlling the pressure liquid flow.
GB5138/69A
1968-02-05
1969-01-30
Radial piston type hydraulic pump or motor
Expired
GB1249732A
(en)
Applications Claiming Priority (3)
Application Number
Priority Date
Filing Date
Title
JP743668U
JPS4734888Y1
(en)
1968-02-05
1968-02-05
JP1223568U
JPS4719773Y1
(en)
1968-02-21
1968-02-21
JP1223668U
JPS4734889Y1
(en)
1968-02-21
1968-02-21
Publications (1)
Publication Number
Publication Date
GB1249732A
true
GB1249732A
(en)
1971-10-13
Family
ID=27277609
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB5138/69A
Expired
GB1249732A
(en)
1968-02-05
1969-01-30
Radial piston type hydraulic pump or motor
Country Status (4)
Country
Link
US
(1)
US3858487A
(en)
FR
(1)
FR2001321A1
(en)
GB
(1)
GB1249732A
(en)
NL
(1)
NL144029B
(en)
Families Citing this family (9)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS5122644B1
(en)
*
1970-12-30
1976-07-12
JPS4997904A
(en)
*
1973-01-26
1974-09-17
US4160403A
(en)
*
1975-03-14
1979-07-10
Kinzo Takagi
Variable delivery hydraulic equipment
JPS5281602A
(en)
*
1975-12-27
1977-07-08
Teijin Seiki Co Ltd
Radial piston type liquid pump motor
CS212800B2
(en)
*
1976-07-15
1982-03-26
Ivan J Cyphelly
Delivery apparatus with hydrostatic torque transfer by cylindrical pistons
CH642147A5
(en)
*
1979-05-18
1984-03-30
Glyco Antriebstechnik Gmbh
DISPLACEMENT MACHINE WITH HYDROSTATIC TORQUE TRANSFER BY MEANS OF ROLLER PISTON.
WO2006037676A1
(en)
*
2004-10-06
2006-04-13
Siemens Aktiengesellschaft
Radial piston pump comprising a roller tappet
DE102007059435A1
(en)
*
2007-12-10
2009-06-18
Linde Material Handling Gmbh
Hydrostatic axial piston machine
US9677574B1
(en)
2013-09-12
2017-06-13
Hydro-Gear Limited Partnership
Transmission assembly
Family Cites Families (13)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2155455A
(en)
*
1932-11-24
1939-04-25
Thoma Hans
Hydraulic motor and pump
US2292181A
(en)
*
1940-05-20
1942-08-04
Hydraulic Dev Corp Inc
Hydraulic pump or motor
US2528739A
(en)
*
1947-06-24
1950-11-07
Dowty Equipment Ltd
High-pressure pump
US2815718A
(en)
*
1952-07-24
1957-12-10
Gen Electric
Ball piston type fluid transmission
US2821145A
(en)
*
1956-11-23
1958-01-28
Oilgear Co
Hydrostatically balanced driving connection
US3046950A
(en)
*
1958-01-22
1962-07-31
Whiting Corp
Constant mechanical advantage rotary hydraulic device
US3073254A
(en)
*
1959-12-24
1963-01-15
United Aircraft Corp
Pressure balanced pump
US3153987A
(en)
*
1960-06-29
1964-10-27
Thoma Hans
Piston type hydrostatic power units
US3142262A
(en)
*
1960-08-31
1964-07-28
Council Scient Ind Res
Pressure fluid pistons or plungers
DE1453433C3
(en)
*
1962-06-20
1975-05-28
Breinlich, Richard, Dr., 7120 Bietigheim
Hydraulic radial piston machine
US3228346A
(en)
*
1963-02-27
1966-01-11
Trw Inc
Hydraulic apparatuses
GB1129293A
(en)
*
1965-02-11
1968-10-02
Nat Res Dev
Improvements in or relating to ball piston hydrostatic pumps and motors
CH461277A
(en)
*
1967-07-07
1968-08-15
Von Roll Ag
Axial piston unit
1969
1969-01-30
GB
GB5138/69A
patent/GB1249732A/en
not_active
Expired
1969-02-03
FR
FR6902274A
patent/FR2001321A1/fr
not_active
Withdrawn
1969-02-04
NL
NL696901744A
patent/NL144029B/en
not_active
IP Right Cessation
1972
1972-05-26
US
US257418A
patent/US3858487A/en
not_active
Expired – Lifetime
Also Published As
Publication number
Publication date
US3858487A
(en)
1975-01-07
FR2001321A1
(en)
1969-09-26
NL144029B
(en)
1974-11-15
NL6901744A
(en)
1969-08-07
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Legal Events
Date
Code
Title
Description
1972-02-23
PS
Patent sealed [section 19, patents act 1949]
1984-10-10
PCNP
Patent ceased through non-payment of renewal fee
