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. 12, 2018
Filed:
Sep. 08, 2014
Applicant:
Fci Holdings Delaware, Inc., Wilmington, DE (US);
Inventors:
Dakota Faulkner, New Kensington, PA (US);
Thomas Cook, Washington, PA (US);
John G. Oldsen, Butler, 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 15/14 (2006.01); E21D 15/55 (2006.01); E21D 15/18 (2006.01);
U.S. Cl.
CPC ...
E21D 15/55 (2013.01); E21D 15/18 (2013.01);
Abstract
A mine prop includes a first pipe having a first end and a second end, a second pipe having a first end and a second end, and a yield member secured to the second pipe. The second pipe is slidably received in the first pipe. The yield member is configured to yield before the first and second pipes when the mine prop is placed under a predetermined load.