Patent ID: 6230561
Filing Date: 2001-05-15
Classification: G01F,Y10S

Abstract:
A level sensor comprising:(a) an axially extended magnetic tube;(b) at least one magnetic ring member having one of a plurality of predetermined contours;(c) a float for displaceable coupling to a magnetic tube, said float having coaxial upper and lower portions, said lower portion having formed therein a center through hole, said upper portion having formed therein a position limiting hole disposed in open communication with said center through hole, said position limiting hole being greater in at least one diametric dimension than said center through hole for receiving said magnetic ring member having at least a first preselected one of said predetermined contours;said float having formed about said center through hole an annular wall section having an annular inner groove and an annular ridge extending therefrom, said float having formed therein annular hollow space for receiving at least a second preselected one of said predetermined contours;(d) inner and outer annular gaskets received in said annular hollow space of said float; and,(e) an annular cap coupled to said float to enclose said annular hollow space.