Patent ID: 6012483
Filing Date: 2000-01-11
Classification: G01F,Y10T

Abstract:
A switch-over valve for a compound water meter, comprising:(a) a housing defining a valve seat and throughflow cross section;(b) a pivot extending across said throughflow cross section of said housing and supported at opposite ends in opposed portions of said housing;(c) a closure member formed by a divided flap having a pair of wings articulated by said pivot for movement between opened and closed positions relative to said valve seat and throughflow cross section of said housing;(d) means for biasing said wings of said divided flap in a direction counter to a normal direction of flow through said throughflow cross section of said housing to said closed position preventing flow through said throughflow cross section but upon flow through said throughflow cross section of said housing exceeding a predetermined limit said biasing means also adapted for permitting said wings to move toward said opened position enabling flow through said throughflow cross section;(e) a flat seal of flexible material disposed on and at least partially covering an upstream side of said divided flap; and(f) a pair of nubs each respectively attached on one of said wings, said flat seal having a pair of longitudinal holes therein extending in a direction perpendicular to said pivot means, said longitudinal holes respectively receiving therethrough said nubs of said wings such that said flat seal is secured form-fittingly on said wings and at the same time guided by said nubs of said wings for movement relative thereto as said wings are moved between said opened and closed positions.