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. 06, 1999
Filed:
Feb. 06, 1998
Frank Calandra, Jr, Pittsburgh, PA (US);
John C Stankus, Canonsburg, PA (US);
James J Scott, deceased, late of Rolla, MO (US);
Brian R Castle, Rolla, MO (US);
John G Oldsen, Butler, PA (US);
Kendal L Taylor, Masontown, WV (US);
Paul Yacisin, Patton, PA (US);
Jennmar Corporation, Pittsburgh, PA (US);
Abstract
A tensionable mine roof cable bolt having a resin grouted upper portion and a mechanically anchored lower portion. The lower portion includes a shaft which is swaged to the cable and accepts a mechanical anchor. The cable bolt is rotated during installation in a mine roof to mix resin and simultaneously engage the mechanical anchor with the rock. A drivehead attached to the lower end of the cable fails upon tensioning of the bolt to a predetermined load.