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:
Sep. 25, 1984
Filed:
May. 07, 1979
H Vance Echols, Los Angeles, CA (US);
Eugene A Mills, Whittier, CA (US);
Other;
Abstract
A method and system for lining shafts such as mining shafts, comprising precasting lining panels and placing them in the shaft, assembling them to form a lining section, then filling the void behind the precast lining panels to secure the lining in place. Subsequent lining panels are passed down through previous liner sections, assembled and positioned around the walls of the shaft and temporarily secured. The void behind these sections is then filled to set the liner section. The precast panels are provided with hangers for temporarily hanging subsequent sections and also are provided with apertures or doors for pouring grouting to fill the void behind the panels after they are positioned. Each panel is also provided with a joint for mating with adjacent panels which permits checking the panel sections before placement and assembly into a lining section. The system also includes the use of an inflatable ring at the bottom of each liner section after the panels have been fitted together for pouring a curb ring to plug the space between the bottom of the liner section and the shaft wall. The void behind the panels can then be filled setting the liner section.