Caterpillar Inc.

Nickolas Jay Gretz

Robert E Riedel, Jr

James D McPhail

Scott Alan Thomas

Christian Joseph Murray

A fluid conduit system a first conduit section having a first conduit bore extending from a first end of the first conduit section to a second end of the first conduit section, the first conduit bore including a first beveled surface proximate the first end of the first conduit section. The fluid system also includes a second conduit section coupled to the first conduit section and having a second conduit bore extending from a first end of the second conduit section to a second end of the second conduit section, the second conduit bore including a second beveled surface proximate the first end of the second conduit section. The fluid system further includes a coating applied to the first beveled surface and to the second beveled surface.

Fluid conduits with selectively coated surfaces

Valve cap adapter

A wrench for tightening and loosening lug nuts may include a head disposed on a distal end of a handle. The head defines a curved inner surface facing an axis and an opening configured to receive a portion of a lug. One or more supports are formed on the curved inner surface, extending toward the axis. The supports are spaced from the opening and are configured to contact an outer surface of the lug with the portion of the lug received in the opening.

Wrench for lug nuts and method of making

Method of removing a valve cap threadedly engaged with a valve body includes inserting at least one coupling rod from a cap adapter through a valve cap attachment hole to couple the structures, coupling an output drive of a torque multiplier with the adapter, and exerting an input torque on the torque multiplier to rotate the adapter and valve cap, the input torque exerted on the torque multiplier being increased by the torque multiplier.

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Lake in the Hills, IL, United States of America

Nickolas Jay Gretz