[go: up one dir, main page]

WO2001085524A3 - Rail frog controllers - Google Patents

Rail frog controllers Download PDF

Info

Publication number
WO2001085524A3
WO2001085524A3 PCT/US2001/013391 US0113391W WO0185524A3 WO 2001085524 A3 WO2001085524 A3 WO 2001085524A3 US 0113391 W US0113391 W US 0113391W WO 0185524 A3 WO0185524 A3 WO 0185524A3
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
fluid flow
flow regulator
housing
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.)
Ceased
Application number
PCT/US2001/013391
Other languages
French (fr)
Other versions
WO2001085524A2 (en
Inventor
Jonathan D Moscato
David A Schrantz
Michael E Peters
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.)
Vibratech Inc
Original Assignee
Vibratech Inc
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 Vibratech Inc filed Critical Vibratech Inc
Priority to AU2001255684A priority Critical patent/AU2001255684A1/en
Publication of WO2001085524A2 publication Critical patent/WO2001085524A2/en
Publication of WO2001085524A3 publication Critical patent/WO2001085524A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L11/00—Operation of points from the vehicle or by the passage of the vehicle
    • B61L11/02—Operation of points from the vehicle or by the passage of the vehicle using mechanical interaction between vehicle and track
    • B61L11/06—Operation of points from the vehicle or by the passage of the vehicle using mechanical interaction between vehicle and track with fluid-pressure transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bearings For Parts Moving Linearly (AREA)
  • Actuator (AREA)

Abstract

New railroad rail frog controllers are disclosed. The rail frog controller has a collapsible and expandable housing having a rail frog wing rail connection portion and a stationary connection portion. The housing has a first expansion stage and a subsequent second expansion stage. A piston head is slidably positioned within a pressure tube in the housing. The pressure tube has first and second fluid chambers on opposite sides of the piston head. A first fluid flow regulator fluidly connects the first and second fluid chambers together, and controls fluid flow between the first and second fluid chambers during the first expansion stage. A second fluid flow regulator fluidly connects the first and second fluid chambers together, has a higher fluid flow rate capacity than the first fluid flow regulator, and controls fluid flow between the first and second fluid chambers during the second expansion stage. A third fluid flow regulator fluidly connects the first and second fluid chambers together, and has a fluid closed position during expansion of the housing and a fluid open position during collapse of the housing. A third fluid chamber is on the outside of the pressure tube. The third fluid chamber is fluidly connected to the second fluid chamber by a fourth fluid flow regulator, particularly a high pressure relief valve. When excessive high actuation velocities occur during expansion, the fourth fluid flow regulator will be in a fluid open position after the fluid pressure in the second fluid chamber exceeds the required pressure to open the fourth fluid flow regulator. The fourth fluid flow regulator will subsequently close upon reduction in fluid pressure within the second fluid chamber.
PCT/US2001/013391 2000-04-25 2001-04-25 Rail frog controllers Ceased WO2001085524A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001255684A AU2001255684A1 (en) 2000-04-25 2001-04-25 Rail frog controllers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US55768800A 2000-04-25 2000-04-25
US09/557,688 2000-04-25

Publications (2)

Publication Number Publication Date
WO2001085524A2 WO2001085524A2 (en) 2001-11-15
WO2001085524A3 true WO2001085524A3 (en) 2002-01-31

Family

ID=24226487

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/013391 Ceased WO2001085524A2 (en) 2000-04-25 2001-04-25 Rail frog controllers

Country Status (2)

Country Link
AU (1) AU2001255684A1 (en)
WO (1) WO2001085524A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9290192B2 (en) 2013-12-11 2016-03-22 Voestalpine Nortrak Inc. Spring wing controller

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2686668A (en) * 1953-03-04 1954-08-17 David C Bettison Hydraulic retarder rail, spring switch, and spring frog
FR2236118A2 (en) * 1964-11-04 1975-01-31 D E M S A Telescopic hydraulic shock absorber - has rapid deformation but slower restoration to normal position

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2686668A (en) * 1953-03-04 1954-08-17 David C Bettison Hydraulic retarder rail, spring switch, and spring frog
FR2236118A2 (en) * 1964-11-04 1975-01-31 D E M S A Telescopic hydraulic shock absorber - has rapid deformation but slower restoration to normal position

Also Published As

Publication number Publication date
AU2001255684A1 (en) 2001-11-20
WO2001085524A2 (en) 2001-11-15

Similar Documents

Publication Publication Date Title
US20130152568A1 (en) Valve activation in compressed-gas energy storage and recovery systems
CA2182446A1 (en) Apparatus and Method for Electronically Controlling Inlet Flow and Preventing Backflow in a Compressor
WO2003018104A3 (en) Medical valve with expandable seal member
CA2336265A1 (en) Bidirectional check valve for hydraulic system
CA2510198A1 (en) Automatic flow rate control valve
WO2002046595A3 (en) Pump system with high pressure restriction
CN113757405B (en) Self-adjusting type temperature and pressure reducing regulating valve for high-pressure steam
CA2366117A1 (en) Downhole bypass valve
CN207830626U (en) Pressure regulator valve
CN107763260A (en) Relief valve and air conditioning system
CN107989848B (en) An energy-saving sequence valve
WO2001085524A3 (en) Rail frog controllers
CN212509767U (en) A waterproof hammer solenoid valve
JPH04506772A (en) Impact hammer and its control device
WO2002086322A3 (en) Fluid controlled pumping system and method
WO2002042647A3 (en) Hydraulic drill string accumulator
JP2955220B2 (en) In-line pressure booster
CN105090531B (en) Motor-driven valve
CN112324513B (en) Expander and air conditioner
CN111878469B (en) A convenient gas-liquid booster cylinder capable of extending the life of seals
CN1300498C (en) Slow-opening and fast-closing energy-saving non-return valve
CN212774997U (en) High-pressure large-flow plug-in mounting type overflow valve
CN219622653U (en) Coiled tubing shunt
CN219795435U (en) End face sealing system for movable guide vane of water turbine
CN110118206B (en) Novel hydraulic accumulator control circuit

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
AK Designated states

Kind code of ref document: A3

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP