David Michael Groh

US Patent:

6745737, Jun 8, 2004

Filed:

Jun 21, 2002

Appl. No.:

10/178039

Inventors:

Matthew Evans - Warren MI
David Groh - Troy MI
Norbert Nitz - Hirschaid, DE
Oliver Schnell - Veitsbronn, DE

Assignee:

INA-Schaeffler-KG - Herzogenaurach

International Classification:

F01L 114

US Classification:

123 905, 123 9048

Abstract:

In an internal combustion engine with a motor block ( ) and a longitudinal extending anti-rotation guide ( ), which includes receiving recesses situated at apportioned spatial distances, one from the other to receive valve tappets and is affixed in a receiving groove of the motor block ( ). The guide ( ) is constructed as an injection molded component with a one-piece, molded-on, elastically expanded or deformable clip, which engages in a complementary receiving contour on the motor block ( ).

US Patent:

55158196, May 14, 1996

Filed:

Nov 4, 1994

Appl. No.:

8/334824

Inventors:

David M. Groh - Battle Creek MI
Jon T. Barrett - Bay City MI
Gary L. Janowiak - Saginaw MI

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

F01L 134
F01L 310

US Classification:

123 9016

Abstract:

A biasing device for a free rocker arm in an engine valve actuating system wherein driven rocker arms are selectively engaged with the free rocker arm to provide variable valve operating characteristics. The biasing device includes interfitting, cold-formed cup-shaped members within which a compression spring is received in interference fit at one end with the body and at the other end with the plunger. In a preferred embodiment, at least two coils of the spring are in interference fit with the body to provide spring damping.

US Patent:

62571850, Jul 10, 2001

Filed:

Dec 14, 1999

Appl. No.:

9/460748

Inventors:

David M. Groh - Troy MI
Troy Kraemer - South Lyon MI
Oliver Schnell - Weisendorf, DE

Assignee:

Ina Walzlager Schaeffler oHG

International Classification:

F01L 114
F01L 1300

US Classification:

123 9016

Abstract:

A switchable cam follower (1) for a valve train of an internal combustion engine, which valve train can be actuated indirectly by tappet push rods, the cam follower comprises an outer and an inner section (4,5) end for switching-off the cam follower (1) from the cam lift, the inner section (5) is pivotable relative to the outer section (4) during a valve lift phase of the cam.

US Patent:

52807711, Jan 25, 1994

Filed:

Sep 23, 1992

Appl. No.:

7/950534

Inventors:

David M. Groh - Battle Creek MI
Chris P. Kaniut - Battle Creek MI
Steven L. Worthington - Battle Creek MI
Martin W. Uitvlugt - Battle Creek MI
Scott C. Johnson - Marshall MI

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

F01L 114
F01L 124

US Classification:

123 9051

Abstract:

A direct acting hydraulic tappet and a method for making same in which an oil groove and interior structure defining a weld interface are formed in a cup-shaped body by a rolling process, the body is heat treated, a web and hub structure is positioned against the weld interface and the resulting assembly is subjected to a localized, capacitive discharge welding process in the weld interface area. In accordance with the invention, the weld interface is formed to a specific shape to enhance the integrity of the weld. In accordance with a further aspect of the invention, a baffle member can be assembled to the web and hub structure prior to its positioning within the body member.

US Patent:

61961760, Mar 6, 2001

Filed:

Dec 14, 1999

Appl. No.:

9/460749

Inventors:

David M. Groh - Troy MI
Troy Kraemer - South Lyon MI
Oliver Schnell - Weisendorf, DE

Assignee:

INA Walzlager Schaeffler oHG

International Classification:

F01L 114
F01L 1300

US Classification:

123 9016

Abstract:

A switchable cam follower (1) for a valve train of an internal combustion engine, which valve train is actuated by tappet push rods, the cam follower (1) comprises an outer section (4) and an inner section (5) which are adapted to be switched off through a coupling device (22) by the lift of a loading cam, a locking device (27) associated with the coupling device (2) and cooperates with a single track on the cam, the locking device (27) prevents displacement of the coupling device (2) outside of a defined part of the base circle phase of the cam.

US Patent:

54309344, Jul 11, 1995

Filed:

Oct 20, 1993

Appl. No.:

8/139481

Inventors:

David M. Groh - Battle Creek MI
Chris P. Kaniut - Battle Creek MI
Steven L. Worthington - Battle Creek MI
Martin W. Uitvlugt - Battle Creek MI
Scott C. Johnson - Marshall MI

Assignee:

Eaton Corporation - Cleveland OH

International Classification:

B23P 1500

US Classification:

2988843

Abstract:

A method for making a direct acting tappet in which an oil groove and interior structure defining a weld interface are formed in a cupshaped body by a rolling process, the body is heat treated, a web and hub structure is positioned against the weld interface and the resulting assembly is subjected to a localized, capacitive discharge welding process in the weld interface area. The weld interface is formed to a specific shape to enhance the integrity of the weld. Further, a baffle member can be assembled to the web and hub structure prior to its positioning within the body member.