Joseph Tyler Robbins

US Patent:

7789054, Sep 7, 2010

Filed:

Mar 10, 2008

Appl. No.:

12/045241

Inventors:

Frederick J. Rozario - Fenton MI, US
Joseph E. Robbins - Mayville MI, US

Assignee:

GM Global Technology Operations, Inc. - Detroit MI

International Classification:

F01L 1/34

US Classification:

123 9017, 123 9015, 123 9031

Abstract:

An engine assembly may include a cam phaser assembly coupled to a concentric camshaft. The cam phaser assembly may include first and second plate assemblies that have first and second vanes, an oil chamber housing located axially between the first and second plate assemblies, an oil distribution member, and a first fastener. The first and second plates may define first and second fastener passages. The oil chamber housing may define first and second chambers and a first central bore. The first vane may extend into the first chamber and the second vane may extend into the second chamber. The oil distribution member may be located within the central bore of the oil chamber housing and may define a third fastener passage. The first fastener may extend through the first, second, and third fastener passages and couple the cam phaser assembly to an outer shaft of the concentric camshaft.

US Patent:

7966983, Jun 28, 2011

Filed:

Apr 10, 2008

Appl. No.:

12/100770

Inventors:

Glenn E. Clever - Washington MI, US
Frederick J. Rozario - Fenton MI, US
Shekhar G. Wakade - Grand Blanc MI, US
Joseph E. Robbins - Mayville MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

B21D 53/84
B21K 1/12

US Classification:

123 906, 298881, 74567

Abstract:

A camshaft may include a first shaft, a first lobe member, and a second lobe member. The first shaft may include an annular wall defining a first bore. The wall may include a first portion having a first radial outer surface and a second portion having a second radial outer surface that is radially offset relative to the first radial outer surface. The first lobe member may define a second bore having the first portion of the first shaft located therein and frictionally engaged with the first shaft for rotation with the first shaft. The second lobe member may define a third bore having the second portion of the first shaft located therein. The second lobe member may be rotatably disposed on the second portion of the first shaft.

US Patent:

8215274, Jul 10, 2012

Filed:

Jun 18, 2008

Appl. No.:

12/141564

Inventors:

Frederick J. Rozario - Fenton MI, US
Joseph E. Robbins - Mayville MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

F01L 1/34

US Classification:

123 9017, 123 9012

Abstract:

A hydraulic control system to provide an oil or pressurized fluid supply to a variable cam phasing system in an engine is provided. The hydraulic control system includes a valve housing attachable to a front cover assembly of the engine; a first valve installed in the housing; and an inlet passage defined by the front cover assembly hydraulically communicating with the first valve in the housing to carry pressurized fluid from a fluid source to the first valve. A first and a second outlet passage defined by the housing hydraulically communicates with the first valve to allow the pressurized fluid to flow to the cam phasing system, thereby variably moving a camshaft assembly operatively connected to the cam phasing system.

US Patent:

8510942, Aug 20, 2013

Filed:

Oct 8, 2008

Appl. No.:

12/247287

Inventors:

Shekhar G. Wakade - Grand Blanc MI, US
Frederick J. Rozario - Fenton MI, US
Glenn E. Clever - Washington MI, US
Joseph E. Robbins - Mayville MI, US
Stephen R. Kornblum - Walled Lake MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

B21D 53/84

US Classification:

298881, 419 48, 419 52

Abstract:

An automotive engine component and method of producing the same. The method uses dynamic magnetic compaction to form components, such as camshaft lobes, with non-axisymmetric and related irregular shapes. A die is used that has an interior profile that is substantially similar to the non-axisymmetric exterior of the component to be formed such that first and second materials can be placed into the die prior to compaction. The first material is in powder form and can be placed in the die to make up a first portion of the component being formed, while a second material can be placed in the die to make up a second portion of the component. The second material, which may possess different tribological properties from those of the first material, can be arranged in the die so that upon formation, at least a portion of the component's non-axisymmetric exterior profile is shaped by or includes the second material.

US Patent:

8534252, Sep 17, 2013

Filed:

Jan 5, 2011

Appl. No.:

12/984959

Inventors:

Glenn E. Clever - Washington MI, US
Frederick J. Rozario - Fenton MI, US
Shekhar G. Wakade - Grand Blanc MI, US
Joseph E. Robbins - Mayville MI, US

International Classification:

F01L 1/047
F01L 1/08

US Classification:

123 906, 298881, 74567

Abstract:

A camshaft may include a first shaft, a first lobe member, and a second lobe member. The first shaft may include an annular wall defining a first bore. The wall may include a first portion having a first radial outer surface and a second portion having a second radial outer surface that is radially offset relative to the first radial outer surface. The first lobe member may define a second bore having the first portion of the first shaft located therein and frictionally engaged with the first shaft for rotation with the first shaft. The second lobe member may define a third bore having the second portion of the first shaft located therein. The second lobe member may be rotatably disposed on the second portion of the first shaft.

US Patent:

20090223469, Sep 10, 2009

Filed:

Mar 10, 2008

Appl. No.:

12/045147

Inventors:

Frederick J. Rozario - Fenton MI, US
Mark Stabinsky - Troy MI, US
Joseph E. Robbins - Mayville MI, US
Steven W. Merricle - Warren MI, US
William C. Albertson - Clinton Township MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS, INC. - DETROIT MI

International Classification:

F02B 75/06
F01L 1/02
F01L 1/344

US Classification:

123 9017, 123 9031, 1231922, 464 1

Abstract:

An engine assembly may include an engine structure, a crankshaft, a camshaft, a balance shaft, and first and second gears. The crankshaft, camshaft, and balance shaft may each be rotatably supported by the engine structure. The camshaft may be rotationally driven by the crankshaft and the first gear may be coupled to the camshaft. The second gear may be fixed for rotation with the balance shaft and meshingly engaged with and driven by the first gear.

US Patent:

20100189587, Jul 29, 2010

Filed:

Jan 26, 2009

Appl. No.:

12/359391

Inventors:

Shekhar G. Wakade - Grand Blanc MI, US
Frederick J. Rozario - Fenton MI, US
Glenn E. Clever - Washington MI, US
Joseph E. Robbins - Mayville MI, US

International Classification:

B22F 3/087

US Classification:

419 66, 425 78

Abstract:

Cam lobe packs and methods of producing the same. The method uses a tool made up of an insert disposed within a sleeve such that both are responsive to a dynamic magnetic compaction (DMC) pressure source. The insert defines a substantially axisymmetric exterior surface and a cam lobe-shaped interior surface that can receive a compactable material such that upon DMC, the material is formed into the shape of the cam lobe. The sleeve is disposed about the insert and defines a substantially axisymmetric exterior surface such that an axisymmetric compaction imparted to the sleeve by the DMC pressure source forms the desired shaped cam lobe. The tool is configured such that individual tool members corresponding to one or more of the cam lobes can be axially aligned so that an aggregate interior surface is formed that defines an exterior surface profile of a camshaft being formed.