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.)
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JASPER KARL THEODOR
Original Assignee
JASPER KARL THEODOR
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Publication date
Application filed by JASPER KARL THEODORfiledCriticalJASPER KARL THEODOR
Priority to ES0072707UpriorityCriticalpatent/ES72707Y/en
Publication of ES72707UpublicationCriticalpatent/ES72707U/en
Application grantedgrantedCritical
Publication of ES72707YpublicationCriticalpatent/ES72707Y/en
Frame for coating galleries of mines or similar, composed of several segments of grooved profile of the same or relatively equal cross section joined together flexibly to each other under closure or surface bonding by friction and interlaced at their ends, and whose outer and inner wrapping curves have a Parabolic development, taking the interior parabolic curve to the vertex of the bottom of the profile, characterized in that the outer parabolic envelope curve is continued in a circular arc in the area of the bottom of the profile, so that the interlaced profiles touch each other exclusively in the parabolic zone of their souls. (Machine-translation by Google Translate, not legally binding)
ES0072707U1958-11-211958-11-21
Casing frame for mine galleries
ExpiredES72707Y
(en)
Improvements in congrude profile games and in a grooved shape, especially for coating, in the form of ring or arch of mining galleries (Machine-translation by Google Translate, not legally binding)