PL59272B1 - - Google Patents

Download PDF

Info

Publication number
PL59272B1
PL59272B1 PL123468A PL12346867A PL59272B1 PL 59272 B1 PL59272 B1 PL 59272B1 PL 123468 A PL123468 A PL 123468A PL 12346867 A PL12346867 A PL 12346867A PL 59272 B1 PL59272 B1 PL 59272B1
Authority
PL
Poland
Prior art keywords
angle
angular position
boom
drill
hydraulic
Prior art date
Application number
PL123468A
Other languages
English (en)
Polish (pl)
Inventor
inz. Bengt Arvid Westerlund mgr
Original Assignee
Atlas Copco Aktiefoolag
Filing date
Publication date
Application filed by Atlas Copco Aktiefoolag filed Critical Atlas Copco Aktiefoolag
Publication of PL59272B1 publication Critical patent/PL59272B1/pl

Links

PL123468A 1967-11-08 PL59272B1 (forum.php)

Publications (1)

Publication Number Publication Date
PL59272B1 true PL59272B1 (forum.php) 1969-12-29

Family

ID=

Similar Documents

Publication Publication Date Title
NO119982B (forum.php)
US3470969A (en) Hydraulic boom particularly for blast hole drilling methods
US3516498A (en) Electro draft control mechanism
US5524525A (en) Rotary servo valve and guidance system apparatus for controlling the same
US4037742A (en) Programme controlled hydraulic loading crane
US2723598A (en) Power actuated router
US4776818A (en) Automatic trim control system for multiple drive boats
PL96709B1 (pl) Uklad sterowania elektrohydraulicznego wysokosci ustawienia przestawnego narzedzia roboczego w maszynie rolniczej
JPS58123996A (ja) 関節接合支持ア−ムの電気油圧式制御装置
EP1068932A2 (en) Valve and position control system integrable with clamp
SE536147C2 (sv) Styranordning för en fjärrstyrd, elektriskt driven arbetsmaskin
US3963051A (en) System for the remote control of the jack cylinders of a hydraulically operated crane
PL59272B1 (forum.php)
NO158229B (no) System for regulering av bladstigningen hos et antall blader som er anbrakt paa et roterbar nav.
US4484637A (en) Positioning control system for rock drill support apparatus
US2851014A (en) Piston rod control mechanism
US3924766A (en) Adjustable program control circuit for two hydraulic cylinders with single lever control
US3144146A (en) Mimic positioning controller
US3367242A (en) Control devices for hydraulic systems
US3942592A (en) Drill stem make-up and break-out system for earth drilling machines
US4578621A (en) Stock advancing apparatus with dancer operated potentiometer speed control
US2447212A (en) Variable inductance pickup device
US2986646A (en) Control for changing blade angle of adjustable blade turbine
US3611352A (en) Device for automatically, or semiautomatically, changing the length of stroke of the grating advance mechanism in welding machines for welding wire gratings
US3333716A (en) Lifting boom control device