The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 2012
Filed:
Jun. 19, 2009
Siamak Onsori, Dortmund, DE;
Stefan Hengstler, Lunen, DE;
Detlef Hahn, Lunen, DE;
Sebastian M. Mundry, Ludinghausen, DE;
Detlev Lettau, Dortmund, DE;
Siamak Onsori, Dortmund, DE;
Stefan Hengstler, Lunen, DE;
Detlef Hahn, Lunen, DE;
Sebastian M. Mundry, Ludinghausen, DE;
Detlev Lettau, Dortmund, DE;
Caterpillar Global Mining Europe GmbH, Lünen, DE;
Abstract
A shield cap for a shield-type support for underground mining includes a cap plate, with reception devices for the connection of hydraulic cylinder heads to the shield cap, and a supporting structure welded below the cap plate and having a plurality of longitudinal spars. At least two of the longitudinal spars include substantially I-profile struts having an upper profile chord, a lower profile chord and a middle chord running perpendicularly to the two profile chords. The distance between the upper and the lower profile chord decreases at least over a part length of each strut.