KR970023980U - Rock cracking device - Google Patents

Rock cracking device

Info

Publication number
KR970023980U
KR970023980U KR2019950032661U KR19950032661U KR970023980U KR 970023980 U KR970023980 U KR 970023980U KR 2019950032661 U KR2019950032661 U KR 2019950032661U KR 19950032661 U KR19950032661 U KR 19950032661U KR 970023980 U KR970023980 U KR 970023980U
Authority
KR
South Korea
Prior art keywords
cracking device
rock cracking
rock
cracking
Prior art date
Application number
KR2019950032661U
Other languages
Korean (ko)
Other versions
KR0121287Y1 (en
Inventor
신수호
Original Assignee
신수호
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 신수호 filed Critical 신수호
Priority to KR2019950032661U priority Critical patent/KR0121287Y1/en
Publication of KR970023980U publication Critical patent/KR970023980U/en
Application granted granted Critical
Publication of KR0121287Y1 publication Critical patent/KR0121287Y1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C37/00—Other methods or devices for dislodging with or without loading
    • E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
    • E21C37/08—Devices with pistons, plungers, or the like, pressed locally against the wall of the borehole
    • 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
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1404—Characterised by the construction of the motor unit of the straight-cylinder type in clusters, e.g. multiple cylinders in one block

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Actuator (AREA)
KR2019950032661U 1995-11-08 1995-11-08 Rock crack device KR0121287Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019950032661U KR0121287Y1 (en) 1995-11-08 1995-11-08 Rock crack device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019950032661U KR0121287Y1 (en) 1995-11-08 1995-11-08 Rock crack device

Publications (2)

Publication Number Publication Date
KR970023980U true KR970023980U (en) 1997-06-20
KR0121287Y1 KR0121287Y1 (en) 1998-08-01

Family

ID=19428376

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019950032661U KR0121287Y1 (en) 1995-11-08 1995-11-08 Rock crack device

Country Status (1)

Country Link
KR (1) KR0121287Y1 (en)

Also Published As

Publication number Publication date
KR0121287Y1 (en) 1998-08-01

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Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 20100415

Year of fee payment: 13

EXPY Expiration of term