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GB1256903A - - Google Patents

Info

Publication number
GB1256903A
GB1256903A GB1256903DA GB1256903A GB 1256903 A GB1256903 A GB 1256903A GB 1256903D A GB1256903D A GB 1256903DA GB 1256903 A GB1256903 A GB 1256903A
Authority
GB
United Kingdom
Prior art keywords
duct
inlet
piston
valve
vortex
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
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 filed Critical
Publication of GB1256903A publication Critical patent/GB1256903A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/225—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke with valve stems operated by contact with the piston end face or with the cylinder wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/222—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which throttles the main fluid outlet as the piston approaches its end position

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)

Abstract

1,256,903. Vortex chambers. FLUID POWER Ltd. 20 Feb., 1970 [24 Feb., 1969], No. 9708/69. Heading F2S. [Also in Divisions Fl and G3] The heads 42, Fig. 10, of an hydraulic or pneumatic cylinder 43 containing an axially displaceable piston 44 has fluid inlet and outlet duct means 40, 41 connected by a vortex valve 39 serving to restrict the fluid flow in one direction through the duct 40, 41. The valve 39 is of the diode type wherein duct 40 provides a tangential inlet and duct 41 is an axial outlet whereby piston 44 is damped during the whole of the return stroke whereas the fluid supply during the forward stroke is unrestricted. In a modification the vortex valve 28, Fig. 7, is an amplifier having a cylindrical chamber connected to the cylinder space by a radial inlet duct 35 and connected to the exterior by an axial outlet duct 36; the vortex valve also having a tangential control inlet 37 also connected to the cylinder space and in which working pressure is generated only when a cushioning ram 33 enters cylinder head chamber 31 near the end of the piston stroke. In a further modification the radial inlet duct of the amplifier is connected to the main cylinder space whereas the tangential control inlet is connected to the cushioning chamber. In a further modification the tangential control inlet, 48, Fig. 11, of a vortex amplifier valve 45 leads to the exterior of the cylinder head 42 and is subjected to control pressure responsive to the position of the piston 44 or during a predetermined portion of the piston stroke.
GB1256903D 1969-02-24 1969-02-24 Expired GB1256903A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB970869 1969-02-24

Publications (1)

Publication Number Publication Date
GB1256903A true GB1256903A (en) 1971-12-15

Family

ID=9877255

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1256903D Expired GB1256903A (en) 1969-02-24 1969-02-24

Country Status (1)

Country Link
GB (1) GB1256903A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2249642A (en) * 1990-10-29 1992-05-13 Hydro Int Ltd Vortex valves
GB2251703A (en) * 1991-01-11 1992-07-15 Marconi Gec Ltd Valve devices
GB2334791A (en) * 1998-02-27 1999-09-01 Hydro Int Plc Vortex valves
WO2008124217A1 (en) * 2007-04-10 2008-10-16 Illinois Tool Works Inc. Magnetically sequenced pneumatic motor
WO2008124215A1 (en) * 2007-04-10 2008-10-16 Illinois Tool Works Inc. Valve with magnetic detents
WO2008124220A1 (en) * 2007-04-10 2008-10-16 Illinois Tool Works Inc. Pneumatically self-regulating valve

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2249642A (en) * 1990-10-29 1992-05-13 Hydro Int Ltd Vortex valves
US5337789A (en) * 1990-10-29 1994-08-16 Hydro International Limited Vortex valves
GB2249642B (en) * 1990-10-29 1994-09-14 Hydro Int Ltd Vortex valves
GB2251703A (en) * 1991-01-11 1992-07-15 Marconi Gec Ltd Valve devices
US5197517A (en) * 1991-01-11 1993-03-30 Gec-Marconi Limited Valve devices
GB2251703B (en) * 1991-01-11 1994-08-03 Marconi Gec Ltd Valve devices
GB2334791A (en) * 1998-02-27 1999-09-01 Hydro Int Plc Vortex valves
US6374858B1 (en) 1998-02-27 2002-04-23 Hydro International Plc Vortex valves
GB2334791B (en) * 1998-02-27 2002-07-17 Hydro Int Plc Vortex valves
WO2008124217A1 (en) * 2007-04-10 2008-10-16 Illinois Tool Works Inc. Magnetically sequenced pneumatic motor
WO2008124215A1 (en) * 2007-04-10 2008-10-16 Illinois Tool Works Inc. Valve with magnetic detents
WO2008124220A1 (en) * 2007-04-10 2008-10-16 Illinois Tool Works Inc. Pneumatically self-regulating valve
US7587897B2 (en) 2007-04-10 2009-09-15 Illinois Tool Works Inc. Magnetically sequenced pneumatic motor
US7603854B2 (en) 2007-04-10 2009-10-20 Illinois Tool Works Inc. Pneumatically self-regulating valve
US7603855B2 (en) 2007-04-10 2009-10-20 Illinois Tool Works Inc. Valve with magnetic detents

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees