Inventor
KOPPERS MANFRED
24 patents
⚠️ This page may combine multiple inventors who share the name “KOPPERS MANFRED”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BOCHUMER EISEN HEINTZMANN
15 patentsUS4255071AMar 10, 1981
Supporting of excavation roofs
BOCHUMER EISEN HEINTZMANN54 citations96
US4440526AApr 3, 1984
Rock anchoring arrangement
BOCHUMER EISEN HEINTZMANN33 citations92
US4610424ASep 9, 1986
Shut-off valve
BOCHUMER EISEN HEINTZMANN28 citations91
US4277204AJul 7, 1981
Excavation roof support and method of installing the same
BOCHUMER EISEN HEINTZMANN34 citations90
US4887935ADec 19, 1989
Method of controlling the movement of a longwall excavation front, especially the face or breast of a coal seam
BOCHUMER EISEN HEINTZMANN54 citations88
US4332512AJun 1, 1982
Arrangement for erecting columnar supporting elements for underground excavations
BOCHUMER EISEN HEINTZMANN19 citations73
US4640650AFeb 3, 1987
Hydraulically operated unit for roof support
BOCHUMER EISEN HEINTZMANN8 citations72
US4465404AAug 14, 1984
Wall element for an underground gallery
BOCHUMER EISEN HEINTZMANN17 citations72
US4252476AFeb 24, 1981
Hydraulically operated mine prop with safety valve
BOCHUMER EISEN HEINTZMANN13 citations72
US4576524AMar 18, 1986
Rock anchor arrangement
BOCHUMER EISEN HEINTZMANN14 citations71
US4437562AMar 20, 1984
Chain bucket conveyor
BOCHUMER EISEN HEINTZMANN6 citations60
US4620748ANov 4, 1986
Method of and arrangement for loosening, loading and transporting of stratified minerals in underground elongated front longwalls
BOCHUMER EISEN HEINTZMANN1 citations50
US4630973ADec 23, 1986
Peripherally flexible prop arch for mining tracks, tunnels or the like
BOCHUMER EISEN HEINTZMANN0 citations40
US4586530AMay 6, 1986
Arrangement for supplying of consumers with pressure fluids
BOCHUMER EISEN HEINTZMANN0 citations36
US4602896AJul 29, 1986
Clamping connection device for flanged through sections of support structures
BOCHUMER EISEN HEINTZMANN0 citations34
THYSSEN INDUSTRIE
5 patentsUS4136999AJan 30, 1979
Canopy and shield structure for a supporting shield in a seam-like mine deposit
THYSSEN INDUSTRIE7 citations73
US4236850ADec 2, 1980
Shield timbering frame for timbering mines
THYSSEN INDUSTRIE12 citations69
US4089181AMay 16, 1978
Canopy and shield structure for supporting a shield in a seam-like mine deposit
THYSSEN INDUSTRIE3 citations62
US4147459AApr 3, 1979
Shifting device connected with a longwall conveyor for a progressive timbering frame
THYSSEN INDUSTRIE2 citations57
US4142449AMar 6, 1979
Hydraulic mine prop
THYSSEN INDUSTRIE6 citations54