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Contianer cap

  • US 5,184,740 A
  • Filed: 02/14/1992
  • Issued: 02/09/1993
  • Est. Priority Date: 02/14/1992
  • Status: Expired due to Fees
First Claim
Patent Images

1. A container cap arranged for securement to a beverage container, the beverage container including an externally threaded spout and the spout including an upper rim, the container cap including a closure member, the closure member including a cylindrical side wall formed about predetermined axis and including an internally threaded interior surface arranged for inter-engagement with the externally threaded spout, anda top wall fixedly mounted to an upper distal end of the cylindrical side wall orthogonally oriented relative to the axis, the top wall including a top wall bottom surface and a top wall top surface, andthe top wall top surface including a rigid central boss fixedly and orthogonally mounted coaxially aligned with the predetermined axis, the central boss including spaced side walls, the side walls each including spaced parallel ribs to enhance manual grasping of the central boss, anda first ring member and a second ring member fixedly mounted to opposed sides of the central boss, with the first ring member and the second ring member integrally mounted to the top wall top surface and projecting laterally beyond the top wall, andthe first ring member including a first bore directed therethrough, the second ring member including a second bore directed therethrough, wherein the first bore and the second bore project beyond the cylindrical side wall, andthe central boss includes a boss bore coaxially aligned with the predetermined axis directed coextensively through the central boss and through the top wall, and the central boss slidably mounting a valve member assembly thereto, andthe valve member assembly includes a valve member top wall arranged parallel relative to the top wall bottom surface, with the top wall including a torroidal sealing ring concentrically positioned about the boss bore directed through the top wall, with the valve member top wall including a rigid valve member rod fixedly and orthogonally mounted to the valve member top wall and the valve member rod directed into the boss bore, the valve member rod including a plunger rod extending from the valve member rod through the boss bore, and the plunger rod terminating in a plunger head, and a spring member captured between the plunger head and the boss, and an arcuate flexible side wall extending downwardly of the valve member top wall canted towards the cylindrical side wall interior surface, the arcuate flexible side wall including a plurality of window openings directed therethrough to permit gaseous flow through the window openings, and the valve member rod and the plunger rod are spaced from a cylindrical boss interior wall to permit gaseous flow between the valve member rod, the plunger rod, and the cylindrical boss bore interior wall.

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