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:
Mar. 06, 2001
Filed:
Feb. 16, 1999
A. J. Rohaly, Lexington, KY (US);
Peter S. Mills, Stamping Ground, KY (US);
Fosroc International Limited, Wiltshire, GB;
Abstract
A method and apparatus are provided for installing a mine support (pillar, or pillar and grout bag) in a mine. The following are practiced: Locating a form in the mine where it is desired to provide support, the form being composed of a plurality of engaging parts shaped to produce a pillar when filled with a settable material, and the parts being disengageable to permit subsequent removal. Filling the form with a settable cementitous material and allowing the material to set to produce a pillar in the mine which is cuttable with a coal shearer. And, removing the form. When there is a gap between the top of the pillar and the roof of the mine a bag of yieldable grout is inserted in the gap. After use the support may be removed by cutting through the pillar and the bag of yieldable material, and the form may be reused to make a second pillar.