Larry Allen Larson

US Patent:

61593834, Dec 12, 2000

Filed:

Apr 17, 1998

Appl. No.:

9/062336

Inventors:

David F. Gullett - Peoria IL
Larry A. Larson - Chillicothe IL

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

B01D 3526

US Classification:

210741

Abstract:

A filter head having a pump housing, a flow passage network, and a mounting bracket is adaptable to engage a replaceable filter cartridge. An electric pump is positioned within the pump housing. A Seal/isolator disposed between the pump housing and electric pump protects the electric pump from vibrations. After changing the filter cartridge, typically an air pocket forms creating a danger for a fuel injector or fuel injector pump. By using an electronic controller, an operator may remotely operate the electric pump to prime the filter cartridge. Also, the electronic controller may selectively determine whether the fluid flowing from the filter cartridge passes through the electric pump or instead passes directly into an outlet.

US Patent:

40234053, May 17, 1977

Filed:

May 17, 1976

Appl. No.:

5/687121

Inventors:

Larry Allen Larson - Peoria IL

Assignee:

Caterpillar Tractor Co. - Peoria IL

International Classification:

G01L 316

US Classification:

73134

Abstract:

A tuned quick connect and disconnect coupling arrangement includes a tubular adapter removably secured to the output shaft of an engine and has an external spline formed on its periphery. A tuned resilient coupling assembly is secured to the dynamometer input shaft and has an internal spline adapted for meshing engagement with the external spline of the adapter for drivingly coupling the shaft to one another for checking the power output of the engine and is disengageable therefrom for uncoupling the shafts from each other. The coupling assembly includes an annular ring containing the internal spline, an elongate torque tube having a pair of radially outwardly extending flanges secured thereto at its opposite ends with one of the flanges resiliently connected to the annular ring, and a hub having a radially outwardly extending flange formed thereon resiliently connected to the other flange of the torque tube. The hub is secured to the dynamometer input shaft for imparting rotation thereto through a diametral tapered bore formed in the hub, a device operatively associated with the dynamometer input shaft and which provides a complementary external tapered surface, and a device operatively connected to the hub to axially draw the external tapered surface into wedging gripping relation with the tapered bore to drivingly interlock the hub to the input shaft.

US Patent:

43875890, Jun 14, 1983

Filed:

Jun 10, 1981

Appl. No.:

6/287538

Inventors:

Larry A. Larson - Washington IL

Assignee:

Caterpillar Tractor Co. - Peoria IL

International Classification:

G01M 1500

US Classification:

73119A

Abstract:

A test stand (10) having a principal use for testing a fuel pump and associated governor (24), has a drive shaft (16), an inertial weight (30) operatively associated therewith, and apparatus (56) for selectively engaging and disengaging the inertial weight (30) with the drive shaft (16). This test stand (10) solves the technical problems associated with present test stands, which problems include the inability to maintain a constant drive shaft speed for fuel pump calibration, and also the inability to thereafter rapidly increase or decrease said drive shaft speed for purposes of determining the governor response. The apparatus (56) can accommodate misalignment between the drive shaft (16) and the fuel pump (24). The test stand can also include a spline arrangement (108) which also accommodates misalignment between the drive shaft (16) and a cam shaft (99) of the fuel pump (24).

US Patent:

44048475, Sep 20, 1983

Filed:

Aug 7, 1981

Appl. No.:

6/294760

Inventors:

Larry A. Larson - Washington IL

Assignee:

Caterpillar Tractor Co. - Peoria IL

International Classification:

G01M 1500

US Classification:

73119A

Abstract:

A fluid conditioning and flow measurement circuit (10) for testing a fuel injection apparatus (12,20). The circuit (10) has a reservoir (58) communicating with a pump (22) which supplies fuel to the injection apparatus (12,20) the flow of which is measured by a calibrated flow meter (44). A first deaeration apparatus (38) communicating with the discharge side (24) of the pump (22) removes entrained and dissolved air in cooperation with a relief valve (36). A second deaeration apparatus (56) in cooperation with the testing apparatus (12,20) further removes entrained and dissolved air thereby enabling accurate flow measurements to be made by the flow meter (44).

US Patent:

43989306, Aug 16, 1983

Filed:

Aug 7, 1981

Appl. No.:

6/297529

Inventors:

Larry A. Larson - Washington IL
Brian J. Murphy - Morton IL

Assignee:

Caterpillar Tractor Co. - Peoria IL

International Classification:

B01D 1900

US Classification:

55192

Abstract:

A fluid deaeration apparatus (10) for removing gas from a circulating fluid having a closed, fluid filled tank (12) for receiving and slowing the fluid. A pressure regulating valve (52) is provided for inducing negative pressure waves in the fluid entering the tank (12) for conditioning the gas in the fluid for removal from the fluid in the tank and for collection and venting of the gas from the tank (12).