GB228536A - Improvements in hydraulic change-speed devices - Google Patents

Improvements in hydraulic change-speed devices

Info

Publication number
GB228536A
GB228536A GB229525A GB229525A GB228536A GB 228536 A GB228536 A GB 228536A GB 229525 A GB229525 A GB 229525A GB 229525 A GB229525 A GB 229525A GB 228536 A GB228536 A GB 228536A
Authority
GB
United Kingdom
Prior art keywords
piston
pump
hydraulic
varied
delivery 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
GB229525A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB228536A publication Critical patent/GB228536A/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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/10—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of fluid gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/16—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by adjusting the capacity of dead spaces of working chambers
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4008—Control of circuit pressure
    • F16H61/4017—Control of high pressure, e.g. avoiding excess pressure by a relief valve

Abstract

228,536. Petterie, R. Esnault. Feb. 2, 1924, [Convention date]. Regulating delivery by opening suction valves.-In a hydraulic variable-speed gear consisting of a pump and motor, the speed ratio is varied by utilizing the compressibility of liquid. In one form, the pump has a constant waste space, and its output is varied by varying the power applied. In another form, the effective length of the discharge stroke of a pump piston B, Fig. 7, is automatically varied in accordance with the delivery pressure by the provision of a piston B<1> acted on by a spring C. In a further form, the suction stroke is regulated by the provision of a piston B<1> connected to a piston B<2>, Fig. 8, of smaller diameter exposed to the delivery pressure and acted on by a spring C, the suction commencing later in proportion to the increase in the delivery pressure. The springs C may be replaced by hydraulic springs, which may comprise a cylinder and movable piston with extensions, the extensions being adapted to close successively ports leading to auxiliary chambers. Another form of hydraulic spring comprises a chamber A<2>, Fig. 9, into which a member E forces plungers b<1>, b <2> &c. provided with shoulders c, d &c.
GB229525A 1924-02-02 1925-01-26 Improvements in hydraulic change-speed devices Expired GB228536A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR589375T 1924-02-02

Publications (1)

Publication Number Publication Date
GB228536A true GB228536A (en) 1926-05-26

Family

ID=8962693

Family Applications (1)

Application Number Title Priority Date Filing Date
GB229525A Expired GB228536A (en) 1924-02-02 1925-01-26 Improvements in hydraulic change-speed devices

Country Status (2)

Country Link
FR (1) FR589375A (en)
GB (1) GB228536A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2296429A1 (en) * 2004-08-17 2008-04-16 Antonio Frco. Renalias Canal Piston pump for wide range of work like transporting hydraulic fluid at different heights, has piston for transportation to lower pressure, and free piston is provided with diameter less than former piston
WO2012075441A1 (en) * 2010-12-02 2012-06-07 Raytheon Company Regenerative hydraulic pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2296429A1 (en) * 2004-08-17 2008-04-16 Antonio Frco. Renalias Canal Piston pump for wide range of work like transporting hydraulic fluid at different heights, has piston for transportation to lower pressure, and free piston is provided with diameter less than former piston
WO2012075441A1 (en) * 2010-12-02 2012-06-07 Raytheon Company Regenerative hydraulic pump
US9200625B2 (en) 2010-12-02 2015-12-01 Sarcos Lc Regenerative hydraulic pump

Also Published As

Publication number Publication date
FR589375A (en) 1925-05-28

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