NL261134A - - Google Patents

Info

Publication number
NL261134A
NL261134A NL261134DA NL261134A NL 261134 A NL261134 A NL 261134A NL 261134D A NL261134D A NL 261134DA NL 261134 A NL261134 A NL 261134A
Authority
NL
Netherlands
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.)
Publication of NL261134A publication Critical patent/NL261134A/xx

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32606—Pivoted
    • Y10T403/32631—Universal ball and socket
NL261134D 1960-02-19 NL261134A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB56733A DE1198306B (en) 1960-02-19 1960-02-19 Hydraulic pit ram

Publications (1)

Publication Number Publication Date
NL261134A true NL261134A (en)

Family

ID=6971441

Family Applications (1)

Application Number Title Priority Date Filing Date
NL261134D NL261134A (en) 1960-02-19

Country Status (6)

Country Link
US (1) US3172340A (en)
AT (1) AT250271B (en)
BE (1) BE600368A (en)
DE (1) DE1198306B (en)
GB (1) GB961983A (en)
NL (1) NL261134A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3313347A (en) * 1963-01-09 1967-04-11 Gray Tool Co Well completion procedures and apparatus
US3395619A (en) * 1965-08-23 1968-08-06 Grebe Konrad Hydraulic propping apparatus with automatic overload protection means
CH551578A (en) * 1973-03-20 1974-07-15 Von Roll Ag PISTON FOR PISTON MACHINE.
JPS5523008Y2 (en) * 1975-10-15 1980-05-31
US4142449A (en) * 1976-02-03 1979-03-06 Thyssen Industrie Ag Hydraulic mine prop
AU564301B2 (en) * 1981-08-13 1987-08-06 Commonwealth Scientific And Industrial Research Organisation Reciprocatory piston and cylinder machine
US5205382A (en) * 1990-10-09 1993-04-27 The B. F. Goodrich Company Aircraft brake
US5413031A (en) * 1994-01-06 1995-05-09 Parker-Hannifin Corporation Alignment coupler for linear device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE918561C (en) * 1951-08-08 1954-09-30 Arthur Hamel Hydraulic pit ram
DE1012275B (en) * 1953-09-09 1957-07-18 Coal Industry Patents Ltd Pit stamp
GB772543A (en) * 1954-06-26 1957-04-17 Gullick Ltd Improvements in or relating to props, chocks, and like roof supporting structures
DE1009137B (en) * 1955-12-14 1957-05-29 Hermann Schwarz K G Hydraulic pit ram with tubular inner and outer part

Also Published As

Publication number Publication date
BE600368A (en)
DE1198306B (en) 1965-08-12
US3172340A (en) 1965-03-09
GB961983A (en) 1964-06-24
AT250271B (en) 1966-11-10

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