RICHARD WIDDLE
Architects at 318 Pl, Lake Joy, WA
License number
Alaska AELM13719
Issued Date
Feb 12, 2013
Effective Date
Nov 8, 2015
Expiration Date
Dec 31, 2017
Category
Architects, Engineers and Land Surveyors
Address
Address
11126 318Th Pl NE, Lake Joy, WA 98014
Organization information
See more information about RICHARD WIDDLE at bizstanding.comRichard Widdle Engineering Pllc
Lake Joy, WA - Duvall, WA
Industry:
Engineering Services
Doing business as:
Rwe<br>Rwe, Pllc
Addresses:
11126 318 Pl NE, Lake Joy, WA 98014
PO Box 1793, Duvall, WA 98019
PO Box 1793, Duvall, WA 98019
Member:
Richard D. Widdle Member, inactive
Professional information
Self Expanding Fastener
US Patent:
2011013, Jun 9, 2011
Filed:
Dec 7, 2009
Appl. No.:
12/632604
Inventors:
Brad L. Kirkwood - Kent WA, US
Lee C. Firth - Renton WA, US
Richard D. Widdle - Carnation WA, US
Wesley B. Crow - Bellevue WA, US
Lee C. Firth - Renton WA, US
Richard D. Widdle - Carnation WA, US
Wesley B. Crow - Bellevue WA, US
International Classification:
F16B 13/04, B23P 11/00
US Classification:
411 15, 2952505
Abstract:
In one embodiment a method to join a first structure to a second structure, comprises aligning a first hole in the first structure with a second hole in the second structure and inserting a fastener into the first hole and the second hole. The fastener comprises a shape memory alloy which was formed into a first shape having a diameter slightly larger than a diameter of the first hole and the second hole when the shape memory alloy was in an austenite state and reduced to a second shape having a diameter less than the diameter of the first hole and the second hole when the shape memory alloy was in a martensite state. The method further comprises heating the fastener above an austenite start transition temperature, such that the fastener initiates free expansion from the second shape back to the first shape and establishes physical contact with the surface of the first hole and the second hole and continuing to heat the fastener such that first structure and the second structure proximate the holes and the fastener undergo plastic deformation.