David Joseph Saxton

US Patent:

20080166578, Jul 10, 2008

Filed:

Jul 31, 2007

Appl. No.:

11/830913

Inventors:

David M. Saxton - Ann Arbor MI, US
James M. Carpenter - Willis MI, US
Gregory W. Sevenski - Farmington MI, US
Holger Schmitt - Hessen, DE
Gerd Andler - Hessen, DE

Assignee:

FEDERAL-MOGUL WORLD WIDE, INC. - Southfield MI

International Classification:

B22F 3/12
B22F 3/24

US Classification:

428546, 419 10, 419 23

Abstract:

A bearing having improved wear resistance has a bearing material of a copper-tin-bismuth alloy which may also include phosphorus which has excellent strength, due to the solid solution of copper, tin and phosphorus (when used), attached to a steel backing shell. The material also has good lubricity as a result of the presence of the bismuth which also promotes tin mobilization and formation of a layer of tin on the bearing surface upon use of the bearing. The addition of small amounts of relatively small hard particles in the copper-tin-matrix, particularly FeP, MoSior a mixture thereof, provides a suitable hard surface artifact to improve the wear resistance of the bearing material. The bearing includes a sintered powder compact bearing material of a copper-tin-bismuth alloy powder and a metal compound powder which is bonded to a steel backing shell, wherein the metal compound powder has an average particle size of less than 10 μm.

US Patent:

20090202855, Aug 13, 2009

Filed:

Jan 8, 2009

Appl. No.:

12/350364

Inventors:

David M. Saxton - Ann Arbor MI, US
Eric Konieczny - Royal Oak MI, US
Robert Sturk - Plymouth MI, US

International Classification:

B32B 15/00
B22F 7/04
B22F 3/12
B32B 5/18

US Classification:

428546, 419 8, 419 2, 428613

Abstract:

A bearing material including a Cu—Sn—Bi alloy layer and method of construction thereof is provided. The alloy layer has a porosity ranging from about 2% to about 10%. A majority of the porosity has pores separate and out of direct communication with one another such that the pores are not interconnected with one another. The alloy layer can be sintered to a metal backing layer, and can be shaped as desired for an intended bearing application.

US Patent:

20120114971, May 10, 2012

Filed:

Oct 6, 2011

Appl. No.:

13/267406

Inventors:

Gerd Andler - Konigsberstrasse, DE
Daniel Meister - Kostheim, DE
David Saxton - Ann Arbor MI, US
Ing Holger Schmitt - Pfungstadt, DE
James R. Toth - Ann Arbor MI, US

International Classification:

B32B 15/00
B23K 31/00
B32B 15/20
B32B 15/01
B32B 15/08

US Classification:

428647, 428457, 428646, 428648, 428650, 228176

Abstract:

A sliding element , such as a bushing or bearing, includes a sintered powder metal base deposited on a steel backing . The base includes a tin, bismuth, first hard particles , such as FeP and MoSi, and a balance of copper. In one embodiment, a tin overplate is applied to the base . A nickel barrier layer can be disposed between the base and the tin overplate , and a tin-nickel intermediate layer between the nickel bather layer and the tin overplate . In another embodiment, the sliding element includes either a sputter coating of aluminum or a polymer coating disposed directly on the base . The polymer coating includes second hard particles , such as FeO. The polymer coating together with the base provides exceptional wear resistance over time.

US Patent:

20190293114, Sep 26, 2019

Filed:

Mar 21, 2018

Appl. No.:

15/927461

Inventors:

- Southfield MI, US
David M. SAXTON - Ann Arbor MI, US

International Classification:

F16C 17/02
F16C 33/12
B23K 20/00
B23K 20/26

Abstract:

A bearing including a backing formed of a steel material, a lining formed of aluminum or an aluminum alloy, and a diffusion barrier layer disposed between the backing and the lining is provided. The diffusion barrier layer is formed of nickel or a nickel alloy and has a thickness ranging from 1 micron to 100 microns. The bearing is typically formed by cladding the lining or plating the steel backing with the diffusion barrier layer, bonding the lining and the backing with the diffusion barrier layer between, heating to a temperature of at least 400 C., and forming the bearing into a shape after or before the heating step.

US Patent:

20160258486, Sep 8, 2016

Filed:

May 12, 2016

Appl. No.:

15/153541

Inventors:

- Southfield MI, US
David Saxton - Ann Arbor MI, US

International Classification:

F16C 33/14
F16C 33/24
C25D 7/00
C25D 3/38
C25D 5/10
F16C 33/12
C25D 3/30

Abstract:

A high strength, low friction engineered material includes a low friction material filling interstices of a metal microlattice. The metal typically comprises 5 volume % to 25 volume % and the interstices typically comprise 75 volume % to 95 volume %, based on the total volume of the metal microlattice and the interstices. The low friction material preferably fills 100 volume % of the interstices. The metal microlattice can be formed of a single layer, or multiple layers, for example layers of nickel, copper, and tin. The low friction material is typically a polymer, such as polytetrafluoroethylene (PTFE), polyamide (PAI), polyetheretherketone (PEEK), polyethylene (PE), or polyoxymethylene (POM). The low friction material can also include additive particles to modify the material properties. The engineered material can be used in various automotive applications, for example as a bearing, or non-automotive applications.

US Patent:

20160102386, Apr 14, 2016

Filed:

May 8, 2014

Appl. No.:

14/890002

Inventors:

- Wiesbaden, DE
DANIEL MEISTER - MAINZ-KOSTHEIM, DE
DAVID M. SAXTON - ANN ARBOR MI, US

International Classification:

C22C 9/06
F16C 33/12
B22F 7/00

Abstract:

The invention relates to a copper alloy such as, for example, CuNi6Sn5Fe2P0.15, which has hard particles such as, for example, Fe3P or Fe2P and optionally solid lubricants such as, for example, hexagonal boron nitrides or graphite. The invention further relates to the use of said copper alloy for a bearing and to a bearing having said copper alloy. The invention further relates to a method for producing a bearing having a copper alloy, wherein a metal powder is produced, for example, by means of melt atomization, hard particles and optional solid lubricants are optionally added to said powder, and the powder is sintered onto a substrate. Finally, the invention relates to an alternative method for producing a bearing, wherein the copper alloy is applied to a substrate by means of casting or plating or wherein the bearing is made completely of the copper alloy.

US Patent:

20150321451, Nov 12, 2015

Filed:

Jul 22, 2015

Appl. No.:

14/805892

Inventors:

- SOUTHFIELD MI, US
DAVID MICHAEL SAXTON - ANN ARBOR MI, US

International Classification:

B32B 15/01
B32B 3/26
B32B 7/04

Abstract:

A continuous hot bonding method for producing a bi-material strip with a strong bond therebetween is provided. The method comprises sanding a first strip formed of steel; and applying a layer of first particles, typically formed of copper, to the sanded first strip. The method next includes heating the first strip and the layer of the first particles, followed by pressing a second strip formed of an aluminum alloy onto the heated layer of the first particles. The aluminum alloy of the second strip includes tin particles, and the heat causes the second particles to liquefy and dissolve into the melted first particles. The first particles and the second particles bond together to form bond enhancing metal particles, which typically comprise bronze.

US Patent:

20140363570, Dec 11, 2014

Filed:

Nov 29, 2012

Appl. No.:

14/363477

Inventors:

- Wiesbaden, DE
Daniel Meister - Mainz-Kostheim, DE
David M. Saxton - Ann Arbor MI, US

Assignee:

Federal-Mogul Wiesbaden GmbH - Wiesbaden

International Classification:

F16C 33/02
B05D 5/08
B05D 1/36

US Classification:

427203

Abstract:

A sliding bearing includes a bearing surface which comprises a material in which an alloy material based on CuSnX (0.01