E21D 5/00

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Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
9938828 Mobile conveyor device for the delivery of tunnel linersMay 22, 17Apr 10, 18Not available
9695689 Mobile conveyor device for the delivery of tunnel linersJan 13, 16Jul 04, 17RELINE AMERICA, INC.
9581022 Free-wheeling-resistant rolls for mining roof support and the combination of a mining machine and such rollsMay 09, 14Feb 28, 17The Tensar Corporation
9278889 Method of reinforcing irregular structuresMay 10, 11Mar 08, 163M INNOVATIVE PROPERTIES COMPANY
9194231 Mesh handling apparatus and related methodsAug 19, 13Nov 24, 15J.H. Fletcher & Co.
9038775 Ladderway system for underground raisesDec 24, 10May 26, 15HIRAM (WA) PTY LTD
8926229 Trench box dewatering systemSep 13, 11Jan 06, 15Not available
7766582 Device and method for transporting trench boxesMar 05, 08Aug 03, 10J Walker Concepts LLC
7748937 Composite matrix fastener apparatus, system and methodJan 20, 05Jul 06, 10Southco, Inc.
7387470 Stackable concrete forming apparatus componentsMay 12, 06Jun 17, 08Wilian Holding Company
5816345 Horizontal drilling apparatusApr 17, 97Oct 06, 98LOS ALAMOS NAT BANK
5533838 Modular trench box sheetingApr 13, 95Jul 09, 96Not available
5401122 Excavation shield apparatus and methodApr 29, 93Mar 28, 95Gwinnett Enterprises, Limited
4993880 Trench-box panelMay 03, 90Feb 19, 91MABEY HIRE COMPANY LIMITED, MABEY HIRE LIMITED, Maybe Hire Company Limited,
4693634 Prefabricated support and covering structure, particularly for constructing tunnels, bridges and the likeFeb 05, 86Sep 15, 87Tensiter S.p.A.
4685837 Portable safety trench and pit form systemJun 09, 86Aug 11, 87Not available
4659260 Trench boxApr 24, 86Apr 21, 87Not available
4591298 Expansion beam for shoring up sand guardsNov 02, 84May 27, 86JAPAN SPEED SHORE CO., LTD.
4496268 Method and apparatus for constructing reinforced concrete walls in the earthMar 01, 83Jan 29, 85FINIC B.V.
4462714 Method and apparatus for setting a cement plug in the wide-mouth shaft of an earth cavernApr 04, 83Jul 31, 84DOWELL SCHLUMBERGER INCORPORATED

Showing 1 to 20 of 28 results