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:
Aug. 17, 2010
Filed:
Feb. 16, 2006
Karl Anthony Calandra, Pittsburgh, PA (US);
John G. Oldsen, Butler, PA (US);
Walter John Simmons, Martinsburg, WV (US);
Walter Neal Simmons, Durham, NC (US);
Karl Anthony Calandra, Pittsburgh, PA (US);
John G. Oldsen, Butler, PA (US);
Walter John Simmons, Martinsburg, WV (US);
Walter Neal Simmons, Durham, NC (US);
FCI Holdings Delaware, Inc., Pittsburgh, PA (US);
Abstract
A nut having an injection-molded insert or delay stopper is threaded onto an end of an anchor. A capsule containing a resin component and a catalyst component and the other end of the anchor are positioned in a bore hole in a mine roof, mine wall, side of a hill, concrete wall, or concrete floor. The threaded end of the nut contacts the insert and rotation of the nut rotates the anchor, breaking the capsule and mixing the components. After the components set, increased torque is applied to fracture the insert and move the nut up the threaded end of the shaft against roof stabilizing components on the shaft.