Patent ID: 6039001
Filing Date: 2000-03-21
Classification: A01J

Abstract:
A teatcup liner comprising an elongated flexible generally tubular liner extending along a longitudinal axis, said liner having an upper section for mounting to a teatcup, a mouthpiece chamber including a shoulder below said upper section, and a barrel below said shoulder, said barrel having alternating exterior and interior axially extending flutes, said shoulder being fluteless along both its exterior and interior, wherein:said shoulder has a constant inner radius and a constant outer radius in a plane normal to said axis;said exterior flute of said barrel transitions to said shoulder along a first arc having a positive radius of curvature;said interior flute of said barrel transitions to said shoulder along a second arc having a positive radius of curvature, then along a third arc having a negative radius of curvature, then along a fourth arc having a positive radius of curvature.