BE649895A - - Google Patents

Info

Publication number
BE649895A
BE649895A BE649895A BE649895A BE649895A BE 649895 A BE649895 A BE 649895A BE 649895 A BE649895 A BE 649895A BE 649895 A BE649895 A BE 649895A BE 649895 A BE649895 A BE 649895A
Authority
BE
Belgium
Application number
BE649895A
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 BE649895A publication Critical patent/BE649895A/xx

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • E21D23/0069—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices without essential advancing shifting devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0466—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with a special seating surface

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)
BE649895A 1963-07-01 1964-06-29 BE649895A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES85932A DE1217317B (en) 1963-07-01 1963-07-01 Relief valve for hydraulic pit rams or hydraulic pit support

Publications (1)

Publication Number Publication Date
BE649895A true BE649895A (en) 1964-10-16

Family

ID=7512671

Family Applications (1)

Application Number Title Priority Date Filing Date
BE649895A BE649895A (en) 1963-07-01 1964-06-29

Country Status (4)

Country Link
BE (1) BE649895A (en)
DE (1) DE1217317B (en)
GB (1) GB1019159A (en)
NL (1) NL6407487A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2627233A1 (en) * 1976-06-18 1977-12-29 Pier Armaturen Gmbh SAFETY VALVE

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4566486A (en) * 1982-03-08 1986-01-28 Taylor Julian S Soft seat for safety valve
DE3444039A1 (en) * 1984-12-03 1986-06-05 Herion-Werke Kg, 7012 Fellbach CONTROL VALVE

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1380415A (en) * 1919-04-10 1921-06-07 James K Putnam Check-valve
DE464802C (en) * 1924-09-14 1928-08-27 Peter Marx Pump valve set with interchangeable seats
BE571508A (en) * 1957-09-28

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2627233A1 (en) * 1976-06-18 1977-12-29 Pier Armaturen Gmbh SAFETY VALVE

Also Published As

Publication number Publication date
NL6407487A (en) 1965-01-04
DE1217317B (en) 1966-05-26
GB1019159A (en) 1966-02-02

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