GB1190114A - A Hydraulic Variable Ratio Gear Device - Google Patents

A Hydraulic Variable Ratio Gear Device

Info

Publication number
GB1190114A
GB1190114A GB1210468A GB1210468A GB1190114A GB 1190114 A GB1190114 A GB 1190114A GB 1210468 A GB1210468 A GB 1210468A GB 1210468 A GB1210468 A GB 1210468A GB 1190114 A GB1190114 A GB 1190114A
Authority
GB
United Kingdom
Prior art keywords
ring
eccentricity
pump
fixed
ducts
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
GB1210468A
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.)
Var Spe Di Speggiorin & C S A
Original Assignee
Var Spe Di Speggiorin & C S A
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 Var Spe Di Speggiorin & C S A filed Critical Var Spe Di Speggiorin & C S A
Publication of GB1190114A publication Critical patent/GB1190114A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H39/00—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution
    • F16H39/04—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit
    • F16H39/06—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit pump and motor being of the same type
    • F16H39/08—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit pump and motor being of the same type each with one main shaft and provided with pistons reciprocating in cylinders
    • F16H39/16—Rotary fluid gearing using pumps and motors of the volumetric type, i.e. passing a predetermined volume of fluid per revolution with liquid motor and pump combined in one unit pump and motor being of the same type each with one main shaft and provided with pistons reciprocating in cylinders with cylinders arranged perpendicular to the main axis of the gearing

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Motors (AREA)

Abstract

1,190,114. Hydrostatic transmission. VARSPE DI SPEGGIORIN & C., S.A.S. 12 March, 1968 [1 April, 1967], No. 12104/68. Heading F2C. In a hydrostatic transmission wherein pump and motor units each have radial pistons 11, 15 engaging freely rotatable eccentric rings 12, 16 and are carried by input and output cylinder blocks 4, 6 freely rotatable on a fixed shaft 9 having arcuate inlet and outlet ports (26, 27) connected by pairs of ducts 28, 29, a vane-type make-up pump 38 coaxial with the pump 4 and driven by the input shaft 1 supplies makeup oil at a pressure determined by a relief valve (45), Fig. 3 (not shown), to the ducts 28, 29 through one-way valves 34, 35. The eccentricity of one or both of the rings 12, 16 may be variable. As shown, the ring 16 has a fixed eccentricity and is mounted by a roller bearing 17 in a fixed casing 10 whilst the ring 12 is mounted by a roller bearing 13 within a ring 19 which is moved transversely by a hand wheel (24), Fig. 2 (not shown), to vary the eccentricity of the ring 12. High-pressure relief valves (51, 52) are provided in the lines 28, 29 respectively. Cooling fins are provided on the casing 10. The cylinder blocks 4, 6 are connected to driving and driven shafts 1, 2 by resilient toothed couplings.
GB1210468A 1967-04-01 1968-03-12 A Hydraulic Variable Ratio Gear Device Expired GB1190114A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT790434 1967-04-01

Publications (1)

Publication Number Publication Date
GB1190114A true GB1190114A (en) 1970-04-29

Family

ID=11125489

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1210468A Expired GB1190114A (en) 1967-04-01 1968-03-12 A Hydraulic Variable Ratio Gear Device

Country Status (1)

Country Link
GB (1) GB1190114A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0428192A2 (en) * 1989-09-28 1991-05-22 VAR-SPE S.p.A. Radial pistons hydrostatic transmission
ITVI20090004A1 (en) * 2009-01-19 2010-07-20 Var Spe Spa HYDRODYNAMIC SPEED WITH RADIAL PISTONS
CN116428330A (en) * 2023-02-24 2023-07-14 浙江大学 Sealing structure of high-pressure hydraulic speed changer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0428192A2 (en) * 1989-09-28 1991-05-22 VAR-SPE S.p.A. Radial pistons hydrostatic transmission
EP0428192A3 (en) * 1989-09-28 1991-09-04 Var-Spe S.P.A. Radial pistons hydrostatic transmission
ITVI20090004A1 (en) * 2009-01-19 2010-07-20 Var Spe Spa HYDRODYNAMIC SPEED WITH RADIAL PISTONS
WO2010081506A1 (en) 2009-01-19 2010-07-22 Var-Spe S.P.A. Hydrostatic variator of velocity having radial pistons
CN116428330A (en) * 2023-02-24 2023-07-14 浙江大学 Sealing structure of high-pressure hydraulic speed changer

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years