James R Lenz

US Patent:

6817223, Nov 16, 2004

Filed:

Apr 8, 2003

Appl. No.:

10/409467

Inventors:

James R. Lenz - Canton MI

Assignee:

Tecumseh Products Company - Tecumseh MI

International Classification:

G01N 1902

US Classification:

73 10, 73 9, 73 5305, 73 5401, 73866

Abstract:

An apparatus for testing properties of materials under operating conditions of the materials. The apparatus includes a hermetically sealed vessel in which a tribology tester is mounted. The tribology tester includes a pair of lever arms having first and second ends with the first end of each lever being pivotally connected. A spring is located between the second end of each of the lever arms with a test block assembly being mounted between the lever arms in a position between the pivotal connection and the spring. The test block assembly includes a pair of test blocks and a pin with the spring biasing the test blocks into contact with the pin. Drive means, such as a motor, is magnetically coupled to the tribology tester to rotatively drive the pin against the test blocks to test the properties of the materials.

US Patent:

20110076169, Mar 31, 2011

Filed:

Sep 24, 2010

Appl. No.:

12/889508

Inventors:

Donald L. Coffey - Ann Arbor MI, US
James R. Lenz - Canton MI, US

Assignee:

TECUMSEH PRODUCTS COMPANY - Ann Arbor MI

International Classification:

F04B 35/04

US Classification:

4174101

Abstract:

The eccentric on the crankshaft of a rotary compressor, as well as the roller that surrounds the crankshaft, is replaced by an elliptical cam that acts as a double eccentric. In this manner, the elliptical cam provides for proper balancing of the crankshaft and other components of the compressor, while eliminating the need to use counterweights. Specifically, the elliptical cam is symmetrical, resulting in equal forces acting on opposing sides of the elliptical cam. This allows the elliptical cam to maintain its balance throughout its rotation, even when operating at a high rate of revolution.

US Patent:

20140212311, Jul 31, 2014

Filed:

Jan 25, 2014

Appl. No.:

14/164201

Inventors:

- Bristol VA, US
Eugene K. CHUMLEY - Abingdon VA, US
James Robert LENZ - Bristol TN, US
Jeffry Lynn HAMILTON - Bristol TN, US
Scott G. HIX - Bristol VA, US
Joseph A. NEWLAND - Limestone TN, US

International Classification:

F04B 53/20

US Classification:

417415

Abstract:

A compressor can have one or more of a suction fitting with integral louvers and a screen, a motor cap with a plurality of holes in the top surface of the motor cap to permit refrigerant to enter a suction plenum, a filter positioned over the plurality of holes in the motor cap, a filter for the cage bearing and a braze ring installed in one or more of the compressor fittings.

Address:

214 Bradford Ln, Bristol, TN 37620

Phone:

(734)3062278

VIN:

1GCCSCF98C8124151

Make:

CHEVROLET

Model:

COLORADO

Year:

2012