Gm Global Technolgoy Operations, Inc.

Christopher James Martone

James Arthur Cole

Paul J Boor

John M Mackovjak

Tony J Deschutter

Raymond J Sapienza

Daniel Gerald Jones

Joseph E Safran

Daniel W Doubleday

Randall R Sobocienski

Stephen J Veryser

An apparatus for cleaning at least one surface of tubular tool rails includes an elongated housing having a free end, at least one brush rotatably attached to the free end of the housing, and a motor attached to the housing. The motor is operable to rotate the at least one brush to clean the at least one surface of the tool rail when the brush contacts the at least one surface. A debris removal device is attached to the housing adjacent the brush.

Tool rail cleaning apparatus

A portable air pressure decay test apparatus for leak testing of a sealed system includes a hollow housing, an air pump having an inlet and an outlet disposed in the housing, and a controller disposed in the housing and connected to the pump for controlling the operation of the pump. A test head is mounted on the housing for releasably attaching to an attachment point of a sealed system. The test head is in fluid communication with the outlet of the pump. When the test head is attached to the attachment point of the sealed system, the controller operates the pump to provide pressured air to the sealed system and raise the pressure in the sealed system to a predetermined value. After the predetermined value of pressure is reached, the controller stops the pump and monitors the air pressure in the sealed system for a predetermined time interval to measure an air pressure decay rate. The controller then compares the measured air pressure decay rate with a predetermined air pressure decay rate to indicate if a leak rate of the sealed system is acceptable. The apparatus preferably includes a power source connected to the pump and the controller disposed in the housing. The power source is preferably a removable battery or the like.

Self-contained portable air pressure decay test apparatus

A dynamic absorber suspension strut includes a sealed hydraulic damper mounted in an outer tube. An absorber mass is supported on a spring inside the outer tube. The absorber mass divides an interior of the outer tube into first and second fluid chambers. A fluid conduit is provided between the chambers. A control valve controls fluid flow in the fluid conduit to provide a desired damping of wheel hop frequencies. The damper is tuned to provide a desired damping of body frequencies.

Dynamic absorber suspension strut

A flexible link includes an elongated central portion formed from a flexible steel cable. First and second cylindrical heads are provided at the ends of the cable. The first head is inserted through an opening on a first suspension component so that the second head is adjacent the first component and retains the first component. The first head is then inserted into a complementary keyway on a second suspension component to secure the link. Tensile forces from the components are transferred and accommodated by the flexible central portion. The tensile force in the link keeps the heads in place and seated in both the first and second components.

Flexible link and method for a vehicular suspension system

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Rochester, MI, United States of America

Christopher James Martone