GB933136A - A piston seal for hydraulic pit-props - Google Patents

A piston seal for hydraulic pit-props

Info

Publication number
GB933136A
GB933136A GB877562A GB877562A GB933136A GB 933136 A GB933136 A GB 933136A GB 877562 A GB877562 A GB 877562A GB 877562 A GB877562 A GB 877562A GB 933136 A GB933136 A GB 933136A
Authority
GB
United Kingdom
Prior art keywords
props
piston seal
hydraulic pit
piston
march
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
GB877562A
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.)
BWG Bergwerk und Walzwerk Maschinenbau GmbH
Original Assignee
BWG Bergwerk und Walzwerk Maschinenbau GmbH
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 BWG Bergwerk und Walzwerk Maschinenbau GmbH filed Critical BWG Bergwerk und Walzwerk Maschinenbau GmbH
Publication of GB933136A publication Critical patent/GB933136A/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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/28—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction of non-metals
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/166—Sealings between relatively-moving surfaces with means to prevent the extrusion of the packing

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Sealing Devices (AREA)
  • Closures For Containers (AREA)

Abstract

933,136. Piston packing. BWG BERGWERKUND WALZWERK-MASCHINENBAU G.m.b.H. March 7, 1962 [March 21, 1961], No. 8775/62. Class 122(1). The piston 11 of an hydraulic pit prop is sealed by a rubber &c. packing ring 12 backed by an anti-extension ring 13 of polyurethane.
GB877562A 1961-03-21 1962-03-07 A piston seal for hydraulic pit-props Expired GB933136A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0061780 1961-03-21

Publications (1)

Publication Number Publication Date
GB933136A true GB933136A (en) 1963-08-08

Family

ID=6973326

Family Applications (1)

Application Number Title Priority Date Filing Date
GB877562A Expired GB933136A (en) 1961-03-21 1962-03-07 A piston seal for hydraulic pit-props

Country Status (4)

Country Link
BE (1) BE615366A (en)
FR (1) FR1317769A (en)
GB (1) GB933136A (en)
NL (1) NL276126A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4109921A (en) * 1976-05-27 1978-08-29 Taunus-Armaturen Gmbh Seal for pistons and piston rods of cylinder-type actuators
FR2412763A1 (en) * 1977-12-23 1979-07-20 Teves Gmbh Alfred SEAL
US5118119A (en) * 1991-07-29 1992-06-02 Allied-Signal Inc. High temperature and high pressure seal retainer ring
CN103738329A (en) * 2013-12-24 2014-04-23 日照市北业制动泵有限公司 Automobile hydraulic brake braking main cylinder

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4109921A (en) * 1976-05-27 1978-08-29 Taunus-Armaturen Gmbh Seal for pistons and piston rods of cylinder-type actuators
FR2412763A1 (en) * 1977-12-23 1979-07-20 Teves Gmbh Alfred SEAL
US5118119A (en) * 1991-07-29 1992-06-02 Allied-Signal Inc. High temperature and high pressure seal retainer ring
CN103738329A (en) * 2013-12-24 2014-04-23 日照市北业制动泵有限公司 Automobile hydraulic brake braking main cylinder
CN103738329B (en) * 2013-12-24 2016-03-02 日照市北业制动泵有限公司 Brake master cylinder of car hydraulic brake

Also Published As

Publication number Publication date
FR1317769A (en) 1963-05-08
NL276126A (en)
BE615366A (en) 1962-07-16

Similar Documents

Publication Publication Date Title
GB933136A (en) A piston seal for hydraulic pit-props
GB948255A (en) Improvements in or relating to hydraulic pit props
GB898987A (en) Improvements in or relating to hydraulic supports
CA610269A (en) Fluid seal
CA613959A (en) Sealing rings
CA632217A (en) Annular face seals
GB933588A (en) Double lip seal ring
CA635559A (en) Pressure sealing valve
GB881611A (en) Piston seals for wheel cylinders of hydraulic brakes
CA590937A (en) Fluid seal
AU258525B2 (en) Fluid pressure seal
CA617585A (en) Sealing of leakage of oil well tubing
CA618086A (en) High-pressure fluid seals
CA650717A (en) Sealing construction for piston valve
CA560866A (en) Annular piston seal
GB937770A (en) Improvements in or relating to seals for rotary valve-spindles
CA644056A (en) Packing means for high pressure mechanical seals
AU273521B2 (en) Mechanical seal for alternatively sealing oppositely directed fluid pressure
AU1780362A (en) Fluid pressure seal
AU237746B2 (en) Improvements relating to packing rings for use on double acting pistons
AU267811B2 (en) Gas seal structure for hightop pressure operation
CA617868A (en) Piston seal
CA630989A (en) Sealing rings for valves
CA606219A (en) Free piston seal
AU264362B2 (en) Ring seal. unit