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
GB9971/51A
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.)
RAYMOND HERMANN RAHR
Original Assignee
RAYMOND HERMANN RAHR
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 RAYMOND HERMANN RAHRfiledCriticalRAYMOND HERMANN RAHR
Publication of GB701456ApublicationCriticalpatent/GB701456A/en
E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D17/00—Caps for supporting mine roofs
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)
Tents Or Canopies
(AREA)
Abstract
701,456. Mine roof support. HIPPEL, H. J. VON, and BAHR, R. H., [trading as CARBOSTREBBAU GES. DR. ING. VON HIPPEL & CO.]. April 27, 1951 [June 2, 1950], No. 9971/51. Class 20 (2) Mine roofs are supported by rubber ropes or bands which may have a centre of woven material or coil springs embedded in rubber. Hooks on the elements engage eyelets on the props. They may be arranged at the angle of strike or dip.
GB9971/51A1950-06-021951-04-27Coal face support
ExpiredGB701456A
(en)