×

Wetness indicator for alerting a wearer to urination

  • US 7,767,875 B2
  • Filed: 12/31/2001
  • Issued: 08/03/2010
  • Est. Priority Date: 12/31/2001
  • Status: Expired due to Fees
First Claim
Patent Images

1. A wetness indicator for alerting a wearer to urination comprising a liquid permeable enclosure having an interior volume and a liquid absorbent body therein, said liquid absorbent body absorbing liquid in the presence thereof and having an unrestrained volume upon absorption of a preselected amount of liquid, said unrestrained volume of the absorbent body being substantially greater than the interior volume of the enclosure such that the absorbent body applies an expansion pressure to the enclosure upon absorption of said preselected amount of liquid, said enclosure limiting expansion of the absorbent body so that the wetness indicator stiffens as liquid is absorbed, said wetness indicator having a first stiffness when dry and a second stiffness greater than said first stiffness upon absorption of said preselected amount of liquid.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×