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Inflation needle lubricating plug insert-type valve assembly

  • US 4,568,081 A
  • Filed: 10/12/1984
  • Issued: 02/04/1986
  • Est. Priority Date: 04/13/1983
  • Status: Expired due to Fees
First Claim
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1. A valve assembly for an inflatable article of manufacturer, said valve assembly including a valve body proving a passage therethrough with a chamber portion, and a sealing plug inserted within said chamber portion and retained therein in sealing engagement with the adjacent wall portion of said passage, said plug having a passage pierceable by an inflation needle to permit gas to be forced into said inflatable article, wherein the improvement comprises forming said plug of a rubber-based mix providing a soft, deformable, resilient character to said plug when molded and cured, and having present in said plug as part of said mix from 3 to 12 parts by weight of a rubber-compatible silicone grease per each 100 parts of rubber, said silicone grease being exudable from said plug and the amount of grease in said plug providing the walls of said plug passage with an effective lubricating action which facilitates insertion and withdrawal of an inflation needle.

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