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. 09, 2021
Filed:
Jul. 10, 2017
Applicant:
Fci Holdings Delaware, Inc., Wilmington, DE (US);
Inventors:
Lumin Ma, Pittsburgh, PA (US);
Dakota Faulkner, New Kensington, PA (US);
John C. Stankus, Canonsburg, PA (US);
Assignee:
FCI Holdings Delaware, Inc., Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21D 21/00 (2006.01); E21D 20/02 (2006.01); E21D 20/00 (2006.01); C21D 1/26 (2006.01); C21D 9/00 (2006.01);
U.S. Cl.
CPC ...
E21D 21/0026 (2013.01); C21D 1/26 (2013.01); C21D 9/0093 (2013.01); E21D 20/026 (2013.01); E21D 21/0006 (2013.01); E21D 21/0046 (2013.01); C21D 2221/01 (2013.01);
Abstract
A mine bolt includes an elongated body having a first end and a second end positioned opposite the first end, with the elongated body having a first threaded section, a second threaded section, and a non-threaded section positioned between the first threaded section and the second threaded section. The non-threaded section is configured to yield under loading when the mine bolt is installed with grout in a bore hole.