No-spill drinking cup apparatus

  • US 20020179615A1
  • Filed: 02/25/2002
  • Published: 12/05/2002
  • Est. Priority Date: 08/21/1997
  • Status: Active Grant
First Claim
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1. An apparatus for preventing spilling during drinking, said apparatus comprising:

  • a valve, said valve comprising a protruding member and an opening, said valve having a closed position and in an open position, said closed position being a configuration in which said protruding member extends through said opening to block the passage of liquid through said opening, said open position being a configuration in which said protruding member and said opening are further separated than in said closed position to allow the passage of liquid through said opening.

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