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Safety cap for medicament vial having puncturable seal

  • US 3,940,003 A
  • Filed: 05/07/1974
  • Issued: 02/24/1976
  • Est. Priority Date: 05/07/1974
  • Status: Expired due to Term
First Claim
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1. For use in connection with a container having a puncturable seal, a closure cap for support from said container in position with a mounting portion of said cap disposed outwardly of said seal, a tubular needle structure having one pointed end supported from said mounting portion for movement toward and away from the outer side of said seal between a first position with said one pointed end retracted away from said seal and a second position with said one pointed end projected through the seal, said mounting portion of said cap and said needle structure including coacting means progressively and increasingly yieldingly resisting movement of said needle structure from said first position to a third position intermediate said first and second positions with said pointed end at least initially engaged with said seal and then releasing said needle structure for free movement from said third position to said second position.

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