GB212228A - Improvements in or relating to hydraulic change speed gear - Google Patents

Improvements in or relating to hydraulic change speed gear

Info

Publication number
GB212228A
GB212228A GB1419/24A GB141924A GB212228A GB 212228 A GB212228 A GB 212228A GB 1419/24 A GB1419/24 A GB 1419/24A GB 141924 A GB141924 A GB 141924A GB 212228 A GB212228 A GB 212228A
Authority
GB
United Kingdom
Prior art keywords
valve
spring
acted
pressure
gear
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
GB1419/24A
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 GB212228A publication Critical patent/GB212228A/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
    • F16H39/22—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 with liquid chambers shaped as bodies of revolution concentric with the main axis of the gearing
    • F16H39/24—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 with liquid chambers shaped as bodies of revolution concentric with the main axis of the gearing with rotary displacement members, e.g. provided with axially or radially movable vanes passing movable sealing members
    • 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
    • F16H61/44—Control of exclusively fluid gearing hydrostatic with more than one pump or motor in operation
    • F16H61/448—Control circuits for tandem pumps or motors

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Pumps (AREA)

Abstract

212,228. Wingquist, S. G. Feb. 28, 1923, [Convention date]. Clutches a n d speed-varying mechanism.- The action of a hydraulic variable-speed gear comprising two or more pumps is controlled by a valve acted on by the pressure in the gear and a spring, and by a cooperating valve, acted on by a spring and centrifugal force due to the rotation of the driving or driven shaft. The form of gear shown comprises two sliding -vane pumps, a rotor 2 on the driving shaft 1 and a stator 10 co-operating with a rotor 5 on the driven shaft 4, and communication between the pumps is governed by a valve 15 acted on by a spring 14 and the pressure in a chamber 12. When the speed of the driven rotor exceeds a predetermined value, a valve 19 moves outwards into the position shown against the action of a spring 18, so that the pressure in the chamber 12 obtains access to the back nf the valve 15 through passages 24, 25 and an annular recess 23. The valve 15 is thereupon returned to its initial position by its spring.
GB1419/24A 1923-02-28 1924-01-17 Improvements in or relating to hydraulic change speed gear Expired GB212228A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE212228X 1923-02-28

Publications (1)

Publication Number Publication Date
GB212228A true GB212228A (en) 1924-05-15

Family

ID=20305197

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1419/24A Expired GB212228A (en) 1923-02-28 1924-01-17 Improvements in or relating to hydraulic change speed gear

Country Status (1)

Country Link
GB (1) GB212228A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5873201A (en) * 1997-10-22 1999-02-23 Lonnie Naefke Roof structure support device
EP1972785A1 (en) * 2007-03-20 2008-09-24 Ford Global Technologies, LLC Check valve for a vacuum pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5873201A (en) * 1997-10-22 1999-02-23 Lonnie Naefke Roof structure support device
EP1972785A1 (en) * 2007-03-20 2008-09-24 Ford Global Technologies, LLC Check valve for a vacuum pump
GB2447627B (en) * 2007-03-20 2011-05-25 Ford Global Tech Llc A check valve for a vacuum pump

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