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. 30, 2015
Filed:
Nov. 02, 2012
University of Washington Through Its Center for Commercialization, Seattle, WA (US);
Per G. Reinhall, Seattle, WA (US);
Peter H. Dahl, Seattle, WA (US);
John Timothy Dardis, II, Seattle, WA (US);
University of Washington through its Center for Commercialization, Seattle, WA (US);
Abstract
A pile () with a effective low Poisson's ratio is disclosed, which greatly reduces the sound coupling to the water and sediment or other ground when driving piles. The pile includes a plurality of geometric features that reduce the radial amplitude of the compression wave generated by hammering the pile by providing a space for circumferential expansion along the length of the pile. In various embodiments, the geometric features comprise slots () and/or grooves (). In an embodiment, a driving shoe () has a perimeter that extends beyond the pile tube such that the sediment produces less of a binding force on the pile. The pile may be formed as a double-shelled pile () with either or both shells having effective low Poisson's ratio properties. A bubble generating plenum () may be attached to the shoe to further reduce friction during installation.