Patent ID: 6416059
Filing Date: 2002-07-09
Classification: B60T,F16J

Abstract:
A gasket for use in a service portion of a brake control valve in a railway braking system, said gasket comprising;(a) an elastomeric composition having a predetermined shape, said predetermined shape including a first surface and an opposed planar second surface; (b) a first at least one bead like projection formed on said first surface of said gasket closely adjacent an outer periphery of said first surface and extending around said outer periphery of said first surface for sealing said gasket to a body of such service portion of such brake control valve; (c) a first aperture disposed in said gasket having a first predetermined location and a first predetermined diameter, said first aperture for engagement with a projection disposed on a filling piece of such service portion of such brake control valve; (d) a second at least one bead like projection formed on said first surface around and closely adjacent an outer circumference of said first aperture for sealing said gasket to such body of such service portion of such brake control valve; (e) a brass insert molded into said elastomeric composition and disposed in a second predetermined location; (f) a second aperture having a second predetermined diameter formed through said brass insert and said elastomeric composition, said second aperture in fluid communication with an auxiliary reservoir of such railway braking system; (g) a third at least one bead like projection, formed closely adjacent said second aperture on said first surface in a generally U-shape with an open part of said U-shape contacting a portion of said first at least one bead like projection for sealing said gasket with such body of such service portion of such brake control valve; (h) a third aperture formed in said gasket in a third predetermined location and having a third predetermined diameter; (i) a fourth at least one bead like projection formed on said first surface between said second at least one bead like projection and a portion of said first at least one bead like projection for sealing said gasket with such body of such service portion of such brake control valve; (j) a fifth at least one bead like projection formed on said first surface between said second at least one bead like projection and a portion of said first at least one bead like projection, said fifth at least one bead like projection being axially opposed from said fourth at least one bead like projection; (k) a sixth at least one bead like projection formed on said first surface between said second at least one bead like projection and a portion of said first at least one bead like projection for sealing said gasket with such body of such service portion of such brake control valve, said sixth at least one bead like projection being substantially transverse to said fourth and said fifth at least one bead like projection; (l) a brass insert having a first predetermined configuration molded into said elastomeric composition of said gasket, said brass insert disposed in a first predetermined quadrant of said gasket; (m) a fourth aperture formed through said brass insert and said elastomeric composition for fluid communication with a brake pipe in such body of such service portion of such brake control valve, said fourth aperture having a second predetermined configuration; (n) a plurality of bead like projections formed on said opposed planar second surface of said gasket positioned such that said at least one bead like projection formed on said opposed planar second surface of said gasket correspond to similar positions, but on said opposed planar second surface, for each of said first, said second, said third, said fourth, said fifth and said sixth of said at least one bead like projection formed on said first surface of said gasket, said at least one bead like projection formed on said opposed planar second surface of said gasket for sealing contact with such filling piece of such service portion of such brake control valve; and (o) a dowel projection having a third predetermined configuration disposed on said opposed planar second surface of said gasket for engagement with a cavity in such filling piece of such service portion of such brake control valve.