Andrew C Baker

US Patent:

63249960, Dec 4, 2001

Filed:

Jun 6, 2000

Appl. No.:

9/588862

Inventors:

Gregory J. Saxton - Gresham OR
Andrew A. Baker - Portland OR

Assignee:

Gunderson, Inc. - Portland OR

International Classification:

B61D 308
B61D 1704
B62D 2702

US Classification:

105355

Abstract:

A structural assembly defining a corner of a doorway for a railway boxcar in which a square-cornered doorway opening is provided and yet stress concentrations are avoided. A corner connecting member interconnects upright and horizontal doorway frame structures, but instead of including an angular intersection of vertical and horizontal surfaces defining the doorway opening, the corner member includes an arcuate concave connecting surface extending between the upright and horizontal surfaces defining the doorway opening. The arcuate concave connecting surface is located outside the doorway opening and extends around the location where the vertical and horizontal surfaces would intersect, so that there is no angular intersection to concentrate stresses. An insert fits matingly along the arcuate concave connecting surface and has an inside corner defined by surfaces that are located to extend the vertical and horizontal surfaces and define the corner of the doorway opening. The insert is held in place by a single fastener that avoids concentration of stresses in the insert.

US Patent:

20230106972, Apr 6, 2023

Filed:

Nov 3, 2022

Appl. No.:

18/052470

Inventors:

- Phoenix AZ, US
Andrew Baker - Phoenix AZ, US

International Classification:

H01M 8/1027
H01M 8/1053
H01M 8/1004

Abstract:

Improved membrane electrode assemblies, cation-associating components thereof, and methods of making and treating the same are provided. Membrane electrode assemblies may include an ionomer having a first pKa value, and a water-insoluble net polymer having a weakly-acidic functional group, wherein the weakly-acidic functional group has a second pKa value greater than the first pKa value.