US 4,362,476 AGranted

Securing apparatus for electric fuel pumps

AssigneeRobert Bosch GmbH

InventorsUlrich Kemmner, Karl Ruhl

Life of this patent

Estimating the term…

Loading patent…

Abstract

A securing apparatus is proposed for electric fuel pumps intended for direct in-tank installation, which enables satisfactory removal of fuel vapor from the suction area of the pump, but prevents the transmission of vibration onto the fuel spinner fixedly mounted in the tank. This is accomplished in that the elastic properties of one or more rubber elements, directly connected in the form of sleeves to the pump, are maintained even with the effects of aging, since the rubber elements are primarily stressed only by shear or bending forces. The pump is inserted, with the mounted rubber element, into a corresponding device in the fuel spinner and, so far as this is necessary, secured with clamping elements. The rubber elements fulfill the functions of holding the pump, sealing the pump suction chamber from the tank, damping noise, and removing vapor in the tank.

Claims15

Dependent claims

A securing apparatus for an electric fuel pump, comprising a lower pumping portion and a combined electromotor arranged for direct installation in fuel tanks of motor vehicles and the like, said apparatus further including a fuel spinner fixedly mounted in a suction area in the fuel tank, and thereby arranged to form a suction basket separated from the remaining tank area by sieve means, said fuel spinner including a lowered element an intermediate element secured on the lowered element, said intermediate element having recesses therein, a sleeve member of rubber-like or elastomeric material arranged to encompass a portion of said pump and is secured thereon, said sleeve member secured on said pump includes equally spaced radially outwardly protruding projections at the top thereof which engage and are supported by said recesses in said intermediate element of said fuel spinner whereby said sleeve member is secured on said intermediate element in such a manner that said sleeve is stressed primarily by shear and bending forces.

Dependencies are inferred from the claim text.