David Isaac Schulz

US Patent:

47174331, Jan 5, 1988

Filed:

Mar 7, 1983

Appl. No.:

6/472911

Inventors:

Edward D. Weisert - San Carlos CA
David W. Schulz - Belmont CA

Assignee:

Rockwell International Corporation - El Segundo CA

International Classification:

C21D 153

US Classification:

148 203

Abstract:

A fluidized bed of solid particulate material cools a heated workpiece through a temperature range critical to strength property determination. Upon immersion into the fluidized bed container the bed is allowed to collapse around the workpiece forming a universal fixture which firmly supports the workpiece for the remainder of the cooling, allowing cooling to be completed at a slower rate to prevent or minimize distortion caused from differential thermal contractions.

US Patent:

46428631, Feb 17, 1987

Filed:

Apr 15, 1985

Appl. No.:

6/723630

Inventors:

David W. Schulz - Belmont CA

Assignee:

Ontario Technologies Corporation - Menlo Park CA

International Classification:

B21K 304
B23P 1502
B23K 2018

US Classification:

291568B

Abstract:

A process is set forth for making a structure formed of at least two metallic workpiece sections each formed of a reactive metal. A mandrel having a nonreactive surface is sandwiched between the workpiece sections thereby preventing them from being in contact over a first selected area and allowing them to be in facing relation over a second selected area. A reactive metal contact is formed of the workpiece sections over the second selected area. The workpiece sections are maintained under coordinated temperature-pressure-time duration conditions to diffusion bond them at the second selected area. A gas pressure differential is applied between intermediate the workpiece sections and external of the workpiece sections to cause breakthrough at the first selected area and superplastic forming of at least one of the workpiece sections causing it to stretch in excess of its original surface area. The mandrel is removed from between the workpiece sections. The process provides structures such as airfoils having leading edges and trailing edges of controlled weight and internal radii.

US Patent:

45000336, Feb 19, 1985

Filed:

Sep 30, 1982

Appl. No.:

6/430570

Inventors:

David W. Schulz - Belmont CA
Gail E. Spaulding - Redondo Beach CA

Assignee:

Rockwell International Corporation - El Segundo CA

International Classification:

B23K 3538
B23K 1900

US Classification:

228219

Abstract:

In a process for diffusion bonding of at least two metal workpieces of a reactive metal, particularly titanium, the improvement for expelling entrapped air from between surfaces of such workpieces prior to diffusion bonding, which comprises precoating the metal surfaces of the workpieces which are to be diffusion bonded with a substance capable of decomposing at a temperature above about 800. degree. F. and below the diffusion bonding temperature of the workpieces, e. g. of the order about 1300. degree. F. , such substance being preferably polytetrafluoroethylene, to form an inert gas having a density greater than air, heating the workpieces to a temperature above about 800. degree. F. and causing decomposition or pyrolysis of such substance and forming an inert gas having a density greater than air, and flushing the inert gas together with the entrapped air out of contact with the surfaces of the workpieces, preferably by means of argon having a density greater than the pyrolysis products or the inert gas. The workpieces are further heated to cause diffusion bonding of the workpieces.

US Patent:

20180041161, Feb 8, 2018

Filed:

Mar 2, 2016

Appl. No.:

15/555944

Inventors:

- Richmond CA, US
Troy Douglas TYLER - El Cerrito CA, US
David SCHULZ - Berkeley CA, US
Bron DAVIS - Vacaville CA, US
Eugene KIM - Orinda CA, US
John WOLFE - Berkeley CA, US
Miguel Martinho Lopes PRACA - Kentfield CA, US

International Classification:

H02S 40/36
F24J 2/52
H02S 20/23

Abstract:

A mounting system and techniques for securing solar panels to a fixed structure including a plurality of mounting brackets and tracks and a plurality of mounting feet that connect to the tracks and anchor to the fixed structure. Each mounting bracket has a means to interconnect and interlock with the mounting brackets on adjacent solar modules. In addition, the mounting feet have a quick release mechanism to connect and disconnect from the track. The mounting feet are appropriately selected for the given fixed structure or roof type. The solar module system, in accordance with certain embodiments, has toggle anchors to reliably mount into sheathing plywood or OSB material. The solar module system, in accordance with certain embodiments, also describes an electrical conduction and coupling system for solar modules that integrates electrical coupling with mechanical coupling at the point of mechanical attachment.