Caterpillar Inc.

Thomas R Springer

Jeffrey R Ries

James J Streicher

Matthew S Touvelle

Kenneth Marvin Roat

Clarence Keith Palmer

Van A Flamion

David V Teel

A sealing mechanism is provided to seal a lead from a closed cavity of an apparatus. The sealing mechanism includes a mounting portion sealingly connected to the apparatus, a cap member having a recess defined therein with an elastomeric grommet compressively disposed in the recess. The elastomeric grommet has a passageway defined therethrough for the lead from the closed cavity to past through. The compressive forces induced into the elastomeric grommet applies a compressive force on the lead to provide a seal. The cap member is sealingly connected to the mounting portion. Consequently, the closed cavity in the apparatus is effectively sealed from the atmosphere and contaminants cannot enter the closed cavity and create premature failure of the component therein, such as, for example, an electrical coil.

Sealing a lead from a confined cavity of an apparatus

A fuel injector includes an injector body defining a terminal passage extending between a solenoid cavity and an outer surface. A solenoid assembly is press fit attached to the injector body and received in the solenoid cavity. The solenoid assembly includes a bobbin sandwiched between an upper magnetic flux carrier and a lower magnetic flux carrier. At least one of the flux carriers is plastically deformed when the solenoid assembly is attached to the injector body. A terminal assembly has an external terminal, an electrical conductor and a sealing member surrounding a portion of the electrical conductor. A portion of the electrical conductor and the sealing member are received in the terminal passage. A clamp is in contact with the outer surface of the injector body and the terminal assembly.

Fuel injector with solenoid and terminal assemblies

Growing community of inventors

Pekin, IL, United States of America

Thomas R Springer