Caterpillar Tractor Co.

Ronald C Stump

Thomas L Mitchell

Jack N Seibel

The invention is concerned with an improvement in a manually activated fuel priming pump for an internal combustion engine comprising a housing having a barrel communicating at its lower end with a flange disposed transversely to the barrel. A plunger communicates at its upper end with a handle, the plunger being reciprocally mounted in a chamber of the barrel to selectively pump fuel from a first to a second valve located in the flange of the housing. The plunger has around the periphery thereof means slidingly sealing it with low friction against a bore defining the chamber. The improvement of the invention comprises a member co-axial with the plunger and extending therefrom towards the flange and member-bore seal means slidably sealing said member to said bore and disposed to allow flow of said fuel from a space within said chamber between said plunger and said flange to said second valve and to retard flow of said fuel in a reverse direction.

Fuel priming pump

Heat exchanger having a self-adjusting snap-on fan shroud. The shroud defines a one-piece element having integral mounting structure for snap-on mounting to the heat exchanger and biasing structure for urging the shroud to a preselected centered position relative to the fan. The shroud may be formed of molded synthetic resin. The heat exchanger may be provided with securing bolts with the shroud mounting structure being adapted to loosely embrace the bolts in the snapped-on arrangement of the shroud.

Growing community of inventors

Peoria, IL, United States of America

Ronald C Stump