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Inflation valve for balloons and the like

  • US 4,586,910 A
  • Filed: 09/17/1984
  • Issued: 05/06/1986
  • Est. Priority Date: 09/17/1984
  • Status: Expired due to Fees
First Claim
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1. A balloon having an inflatable chamber defined therein and an inflation valve of the manual or mechanically operated type for selectively filling said chamber with a fluid, said inflation valve comprising a stem having a rigid inner wall defining a filling passage therethrough communicating with said chamber, said filling passage having an inlet and an outlet, and elastomeric plug means, having an outer surface and a durometer hardness in the range of from thirty to eighty, reciprocally mounted in said passage for movement in a first direction toward said chamber and in a second, opposite direction away from said chamber for (1) openly communicating said passage with said chamber solely through a passageway defined between the outer surface of said plug means and the inner wall of said stem to permit filling of said chamber with said fluid when said plug means is moved to a first predetermined distance in said first direction, and (2) closing said passageway and sealing said passage to prevent escape of said fluid from said chamber when said plug means is moved a second predetermined distance in said second direction to compress the outer surface of said elastomeric plug means against the rigid inner wall of said stem to form an annular static seal therebetween, said plug means being disposed for reciprocal movement along a longitudinal axis of said valve and wherein said passage is defined by an at least generally annular inner wall of said stem that is disposed at an angle within the approximate range of from 0°

  • to 10°

    relative to said longitudinal axis, when viewed in longitudinal cross-section and in said second direction, and the inner wall of said stem converging at an angle within the approximate range of from 2°

    to 10°

    relative to said axis and in said second direction.

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