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:
Jun. 03, 2014
Filed:
Dec. 07, 2012
Fci Holdings Delaware, Inc., Wilmington, DE (US);
John G. Oldsen, Butler, PA (US);
John C. Stankus, Canonsburg, PA (US);
Travis Mikel Sub, Butler, PA (US);
FCI Holdings Delaware, Inc., Wilmington, DE (US);
Abstract
An apparatus for retensioning a loose roof plate held by a roof bolt, includes a main spacer, a washer, and a nut. The main spacer occupies a space between a head of the roof bolt and the loose roof plate, and the main spacer has a threaded circumferential outer surface and a radially extending slot for inserting a shaft of the roof bolt therein. The washer occupies a space between the main spacer and the loose roof plate, and the washer has a radially extending slot for inserting the shaft of the roof bolt therein. The nut has a threaded hole for passing the head of the roof bolt therethrough, for threading onto the threaded spacer and for tightening onto the threaded spacer until the roof plate is firmly pressed against the roof.