Caterpillar Inc.

John A Hoffman, Ii

Maurice J Dust

C Nickolas Goloff

A bobbin for an encapsulated coil is provided for use in a coil assembly in which flange portions are provided on each end to ensure that during the process of encapsulating the coil with an over-molded material a positive seal is established between the bobbin and the over-molded material. Each of the flange portions have first, second, and third flange sections and each of the flange sections have predetermined diameters and peripheral surfaces that are angled with respect to a reference axis of a hole defined in the bobbin. The thin sharp edges formed by the peripheral surfaces of the respective flange sections melt back during the over-molding process. This melt back creates an intricate blend between the over-molded material and the bobbin thus producing a positive seal therebetween.

Bobbin for an encapsulated coil of a solenoid assembly

An injector system adaptable for outputting a predetermined volume of lubricating oil from a diesel engine into an engine fuel system includes a piston slidably disposed in a body and cooperates with the body to define a first and second chamber in the body at opposite ends of the piston. A controller controls the movement of a valve to alternately connect the first and second chambers to a pressurized source of oil so that fluid filling one chamber moves the piston which will expel fluid from the other chamber. The chamber remains filled until the valve is actuated to connect the unfilled chamber to the pressure source which causes the chamber to fill with oil and expel the oil from the previously filled chamber.

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Peoria, IL, United States of America

John A Hoffman, Ii