Michael P Davidson

US Patent:

20130307224, Nov 21, 2013

Filed:

May 18, 2012

Appl. No.:

13/475025

Inventors:

Michael Davidson - Royal Oak MI, US
Edward Lesnau, IV - Livonia MI, US
Chris LaFrenz - Shelby Twp MI, US

International Classification:

F02F 11/00
B30B 13/00
F16J 15/02

US Classification:

277593, 100 35

Abstract:

A cylinder head gasket has a functional layer with a plurality of openings with a compression bead surrounding at least one of the openings. The functional layer additionally includes a plurality of stoppers, or compression limiters, spaced from the compression bead for preventing full flattening of the compression bead between the engine block and the cylinder head and for limiting the expansion and contraction of the compression bead during and between firings in the cylinders of the engine block. At least one of the stoppers has a generally frustoconical shape with a top and a reverse-frustoconical opening in the top.

US Patent:

47297883, Mar 8, 1988

Filed:

Jan 23, 1987

Appl. No.:

7/006487

Inventors:

Stephen R. Hutchins - Golden CO
Michael S. Davidson - Golden CO
James A. Brierley - Wheat Ridge CO
Corale L. Brierley - Wheat Ridge CO

Assignee:

Advanced Mineral Technologies, Inc. - Golden CO

International Classification:

C22B 1104

US Classification:

75118R

Abstract:

A method is provided for the recovery of precious metals, such as gold and silver, from refractory sulfidic material and refractory carbonaceous sulfidic material. The sulfidic material is pulped and bioleached using either facultative or obligate thermophiles at temperatures in excess of about 45. degree. C. and ranging up to about 90. degree. C. The residue remaining from the bioleach is neutralized and washed and the precious metals therein recovered by dissolution.

US Patent:

20180128374, May 10, 2018

Filed:

Jan 8, 2018

Appl. No.:

15/864467

Inventors:

- SOUTHFIELD MI, US
MICHAEL J. DAVIDSON - ROYAL OAK MI, US

International Classification:

F16J 15/08
F02F 11/00

Abstract:

A gasket for providing a gas and fluid tight between parts of an internal combustion engine, for example around a combustion chamber opening, is provided. The gasket includes a functional layer with a full embossment spaced from the combustion chamber opening. A stopper layer is attached to the functional layer adjacent the combustion chamber opening. After attaching the stopper layer to the functional layer, half embossments are simultaneously formed in the functional layer and the stopper layer adjacent the combustion chamber opening. The aligned half embossments are together referred to as a half-stop. The half-stop maintains the load on the stopper layer, limits compression on the full embossment, and protects the full embossment from combustion gases when the gasket is compressed between two parts of the internal combustion engine.

US Patent:

20150204270, Jul 23, 2015

Filed:

Jan 16, 2015

Appl. No.:

14/598547

Inventors:

- Southfield MI, US
Michael J. Davidson - Royal Oak MI, US

International Classification:

F02F 11/00
B23K 26/20

Abstract:

A gasket for providing a gas and fluid tight between parts of an internal combustion engine, for example around a combustion chamber opening, is provided. The gasket includes a functional layer with a full embossment spaced from the combustion chamber opening. A stopper layer is attached to the functional layer adjacent the combustion chamber opening. After attaching the stopper layer to the functional layer, half embossments are simultaneously formed in the functional layer and the stopper layer adjacent the combustion chamber opening. The aligned half embossments are together referred to as a half-stop. The half-stop maintains the load on the stopper layer, limits compression on the full embossment, and protects the full embossment from combustion gases when the gasket is compressed between two parts of the internal combustion engine.

US Patent:

20150069718, Mar 12, 2015

Filed:

Sep 12, 2013

Appl. No.:

14/025191

Inventors:

- Southfield MI, US
Michael J. Davidson - Royal Oak MI, US

Assignee:

Federal-Mogul Corporation - Southfield MI

International Classification:

F02F 11/00

US Classification:

277593, 277594

Abstract:

A metal gasket for establishing a seal between a first member and a second member is provided. The metal gasket includes at least one functional layer with an inner periphery which surrounds an opening. The functional layer also has a generally flat portion and an embossment bead with the embossment bead being spaced from the inner periphery and surrounding the opening. The embossment bead extends in a first direction away from the generally flat portion, has an indentation which extends in a second direction opposite of the first direction and has a bead height of greater than 0.15 mm and no greater than 0.30 mm.