Martin S Kramer

US Patent:

6610369, Aug 26, 2003

Filed:

Dec 13, 2001

Appl. No.:

10/022322

Inventors:

Larry Edward Byrnes - Rochester Hills MI
Martin Stephen Kramer - Clarkston MI
Richard A. Neiser - Albuquerque NM

Assignee:

General Motors Corporation - Detroit MI
Sandia National Laboratories - Albuquerque NM

International Classification:

B05D 108

US Classification:

427449, 427453, 427456

Abstract:

The cylinder walls of light metal engine blocks are thermally spray coated with a ferrous-based coating using an HVOF device. A ferrous-based wire is fed to the HVOF device to locate a tip end of the wire in a high temperature zone of the device. Jet flows of oxygen and gaseous fuel are fed to the high temperature zone and are combusted to generate heat to melt the tip end. The oxygen is oversupplied in relation to the gaseous fuel. The excess oxygen reacts with and burns a fraction of the ferrous-based feed wire in an exothermic reaction to generate substantial supplemental heat to the HVOF device. The molten/combusted metal is sprayed by the device onto the walls of the cylinder by the jet flow of gases.

US Patent:

6715767, Apr 6, 2004

Filed:

Sep 12, 2002

Appl. No.:

10/243967

Inventors:

Paul Richard Meernik - Redford MI
Thomas Arthur Perry - Washington MI
Martin Stephen Kramer - Clarkston MI
Larry Edward Byrnes - Rochester Hills MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F16J 912

US Classification:

277459, 277497, 277499

Abstract:

An engine piston compression ring designed to reduce the negative effects of ring end butting and reduce blowby. The compression ring has a gap forming an angle with a longitudinal axis of the ring or with a radius drawn from the axis. A relieved portion is provided along the upper or inner side of the ring adjacent one end, depending upon the direction of the gap angle. The relieved portion slopes along the upper or inner side toward the one end where the longitudinal thickness of the ring is smallest.

US Patent:

6886757, May 3, 2005

Filed:

Feb 22, 2002

Appl. No.:

10/081913

Inventors:

Larry Edward Byrnes - Rochester Hills MI, US
Leslie K. Sumner - Lapeer MI, US
Peter J. Toth - Franklin TN, US
Martin Stephen Kramer - Clarkston MI, US
William L. Oberkampf - Albuquerque NM, US
Richard Earl Teets - Bloomfield Hills MI, US

Assignee:

General Motors Corporation - Detroit MI
Sandia National Laboratories - Albuquerque NM

International Classification:

B05B001/24
B05B007/10

US Classification:

239 84, 239400

Abstract:

A nozzle assembly for a HVOF thermal metallic spray coating system includes an inner tube, a middle tube and an outer tube which are concentrically arranged about an axis of the nozzle assembly and are spaced to provide annular, concentric gas flow passages for oxygen and gaseous fuel along with a central wire feed passage in an efficient, compact arrangement. A slotted nib and plug are fitted to the discharge end at the assembly and defined, together with the middle tube, an annular premix chamber for the combustible gases, and a plurality of circumferentially spaced mixing slots and a downstream mix end portion of the nib where complete mixing of the gases occurs prior to entry into the combustion chamber provided in an air cap. An annular passage between the air cap and outer tube communicates with a high pressure air source for establishing an envelope of air against the inside surface of the air cap to serve as a protective barrier layer from the atomized metal.

US Patent:

6902768, Jun 7, 2005

Filed:

Feb 13, 2002

Appl. No.:

10/075106

Inventors:

John Robert Smith - Birmingham MI, US
David Rudolph Sigler - Shelby Township MI, US
Richard Earl Teets - Bloomfield Hills MI, US
Larry Edward Byrnes - Rochester Hills MI, US
Martin Stephen Kramer - Clarkston MI, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

B05D001/08
C23C004/06

US Classification:

427449, 427453, 427455, 427456

Abstract:

The cylinder walls of light metal engine blocks are thermally spray coated with a ferrous-based coating including aluminum using an HVOF device. A ferrous-based wire is fed to the HVOF device to locate a tip end of the wire in a high temperature zone of the device. Jet flows of oxygen and gaseous fuel are fed to the high temperature zone and are combusted to generate heat to melt the tip end. The oxygen is oversupplied in relation to the gaseous fuel. The excess oxygen reacts with and burns a fraction of the ferrous-based feed wire in an exothermic reaction to generate substantial supplemental heat to the HVOF device. The molten/combusted metal is sprayed by the device onto the walls of the cylinder by the jet flow of gases.

US Patent:

8499447, Aug 6, 2013

Filed:

Aug 13, 2010

Appl. No.:

12/856116

Inventors:

Martin S. Kramer - Clarkston MI, US
Roger L. Briggs - Lake Orion MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

B23P 6/00

US Classification:

29888011, 2988801, 298886, 2940209, 2940211, 1231932

Abstract:

A method is provided for repairing a cylinder head having corrosion and erosion of the gasket sealing surface around the coolant inlet. The engine is disassembled and the corroded material is machined to a selected depth and width creating a pocket having a bottom wall surface and an annular side wall surface surrounding the coolant inlet port. An annular insert is provided having an annular outer side wall, a top wall, a bottom wall, and a central opening. The insert has a thickness greater than the depth of the machined pocket. An adhesive is applied the insert is pressed into the pocket. After curing of the adhesive, the top wall of the insert is machined to a dimension flush with the sealing surface of the head thereby creating a proper sealing surface for the subsequent seating of a replacement gasket.

US Patent:

20040155125, Aug 12, 2004

Filed:

Feb 11, 2003

Appl. No.:

10/364206

Inventors:

Martin Kramer - Clarkston MI, US
Tracy Kramer - Clarkston MI, US
Larry Byrnes - Rochester Hills MI, US
Rodney Elnick - Washington MI, US

International Classification:

B05B001/26

US Classification:

239/601000

Abstract:

A high pressure fluid jet nozzle has a generally cylindrical body with inlet and outlet ends, a through passage with an entry portion extending to at least one laser cut orifice at the outlet end of the body. The body has a smooth outlet end through which the laser is configured entirely by laser cutting. The entry portion of the through passage preferably has a hemispherical end penetrated by the orifice. Manufacturing steps including laser cutting of the orifice or orifices and optional electrical discharge machining of the hemispherical end of the entry portion.

US Patent:

20060040164, Feb 23, 2006

Filed:

Aug 18, 2005

Appl. No.:

11/206565

Inventors:

Gayatri Vyas - Rochester Hills MI, US
Richard Blunk - Macomb MI, US
Martin Kramer - Clarkston MI, US
Mahmoud Abd Elhamid - Grosse Pointe Woods MI, US
Daniel Lisi - Eastpointe MI, US

Assignee:

GM Global Technology Operations, Inc. - Detroit MI

International Classification:

H01M 8/02
B24C 1/00

US Classification:

429034000, 451038000

Abstract:

Methods and systems for enhancing water management capabilities of a fuel cell system are described. The method includes blasting of the surface of a bipolar plate to roughen the surface to create a super hydrophilic or super hydrophobic surface for enhanced water management. Preferably water jet blasting is used. Other blasting methods include grit blasting, sand blasting and dry ice blasting.

US Patent:

20120088615, Apr 12, 2012

Filed:

Oct 7, 2010

Appl. No.:

12/899782

Inventors:

Roger L. Briggs - Lake Orion MI, US
Martin S. Kramer - Clarkston MI, US
Ronald P. Buffa - Fenton MI, US
Matthew P. Werner - Idaho Falls ID, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS, INC. - Detroit MI

International Classification:

F16H 55/56
B23K 26/36

US Classification:

474 8, 21912169

Abstract:

A pulley for a continuously variable transmission and a method of creating an engineered surface on an outer surface of a pulley of a continuously variable transmission, with the engineered surface engaging with a belt or chain of the continuously variable transmission. The method comprising the steps of: determining an actual engineered roughness (Rpk) on the outer surface needed to obtain a predetermined friction between the engineered surface and the belt or chain; and etching microgrooves in at least a portion of the outer surface to create the engineered surface by employing a laser to etch the microgrooves, the microgrooves being formed to a depth that produces the actual engineered roughness (Rpk).