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:
Feb. 11, 2014
Filed:
Nov. 30, 2011
Randy Stoik, Edmonton, CA;
Van Hy Nguyen, Edmonton, CA;
Randy Stoik, Edmonton, CA;
Van Hy Nguyen, Edmonton, CA;
Dreco Energy Services Ltd., Edmonton, CA;
Abstract
An auto-centering structural bearing transfers vertical loads to a supporting structure while preventing transfer of lateral loads. In one embodiment, the structural bearing includes: parallel lower, middle, and upper bearing plates; a lower roller bed sandwiched between the lower and middle bearing plates and laterally displaceable in a first direction; an upper roller bed sandwiched between the middle and upper bearing plates and laterally displaceable in a second direction; lower centering means including springs compressible by lateral displacement of the middle bearing plate and the lower roller bed in the first direction; and upper centering means comprising springs compressible by lateral displacement of the upper bearing plate and the upper roller bed in the second direction. Upon removal of loads causing such lateral displacements, the springs will rebound to their unstressed states, thereby returning the displaced bearing plates and roller beds to their centered positions.