Caterpillar Inc.

Robert Bosch Tool Corporation

Chicago Steel Tape Co.

John Davenport

Duard Wilson

Gregory Jerome Kaufmann

David Elliot Hackett

Ronald P Maloney

Jay R Munroe

David Anthony Cusac

Ash Puri

Bill Huff

Timothy Edward McGreevy

Burhan Hamdan

Brian A Cull

James J Buettner

Mysore S Satish

Gary L Spadin

Michael L Lusher

Reid A Peterson

Loren L Randle

The invention provides a pipe laser that automatically self levels an inner frame system in both cross-axis and on-axis directions to provide a completely level reference for grade and line control adjustments mechanisms of a reference line generating laser source. The invention also provides a pipe laser that is operable via a bidirectional remote control.

Pipe laser

This invention is directed to a novel, portable, self-powered laser alignment device which can simultaneously generate plumb, square and level laser reference points. The laser alignment device is comprised of a main body that is pendulously suspended from a unit housing. The main body is adapted to house a plurality of orthogonally oriented laser diodes that, when energized, produce a plurality of orthogonal output beams to allow the operator to easily mark plumb, square and level reference points. The laser alignment device is self-leveling, which eliminates the time consuming calibration previously required for instrument setup. The movement of the main body is dampened by use of a magnetic dampening system that is comprised of a non-magnetic metallic plate, which is passed through a permanent magnetic field. The housing of the laser alignment device contains the main body, the laser diodes, the dampening system and a power supply to energize the diodes.

Laser alignment device

An apparatus for testing internal combustion engine valves is provided. The apparatus includes a housing with a bore for receiving a seat fixture. The seat fixture, in turn, receives a seat insert. A valve is inserted into the apparatus so the valve head is received at the seat insert and the valve stem extends through the seat fixture and through an axial bore in the housing. One end of the valve engages an actuating apparatus that provides a lifting action of the valve so that the valve head moves off of the seat insert as well as a rotating action to the valve. Another actuator is provided to move the valve from a lifted position to a seated position. A heater is employed to heat the valve to high temperatures to simulate extreme operating conditions. A cooling system is also provided to rapidly cool the valve and associated elements to simulate a rapid cooling condition. A method for testing internal combustion engine valves is also disclosed.

Apparatus and method for testing internal combustion engine valves

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Watseka, IL, United States of America

John Davenport