Dip stick normally housed in curved filler tube

Claim 1

In combination with a bowingly flexible dip stick having flat sides and a generally upright but curved filler tube which has a diameter substantially greater than the width of the dip stick and in which the dip stick is normally held with its lower end portion projecting a predetermined distance into a reservoir that is below the bottom of the tube, bowing flexibility of the dip stick accommodating the curvature of the tube as the dip stick is lengthwise inserted thereinto and withdrawn therefrom: a disc extending through and fitting snuggly in a slot in the dip stick, at a distance above the lower end thereof such as to be within the lower portion of the tube when the dip stick is normally in place therein, the slot in the dip stick having its lengthwise dimension parallel to the longitudinal axis of the dip stick, said disc 1. having its surfaces substantially perpendicular to the flat sides of the dip stick and 2. having abutments thereon that engage opposite faces of the dip stick to anchor the disc to the dip stick with the disc projecting substantially equal distances beyond the dip stick faces to engage the tube and prevent the faces of the dip stick from being wipingly engaged by the tube as the dip stick is withdrawn therefrom.