Patent ID: 8205808

Claim:
A tank sprayer comprising: a. a tank defining an interior chamber and having a mouth configured to provide access to the interior chamber, the tank further including a neck portion defining the mouth, and the neck portion having an interior neck surface and an exterior neck surface; b. a lid configured to cover the mouth of the tank when the lid is secured to the tank, the lid including (i) a top portion, (ii) an annular wall depending from the top portion, the annular wall having an outer annular wall surface and (iii) a skirt depending from the top portion and having an interior skirt surface, the skirt being spaced apart from the annular wall to define an interior space therebetween, c. a seal positioned within the space and having a first lip, a second lip that is spaced apart from said first lip, and a transverse body portion connected between said first lip and said second lip; and d. a pump configured to advance air into the interior chamber of the tank, wherein said top portion of said lid includes a ramp structure that projects into said interior space with a curved profile to define a ramped seal seat surface, wherein, when (i) said transverse body portion is positioned in contact with said ramped seal seat surface, and (ii) said first lip is positioned in contact with said outer annular wall surface, said seal extends beyond said ramped seal seat surface so as to position said second lip in contact with said interior neck surface at a seal location, and wherein (i) a first gap is defined between said second lip and said interior neck surface on a first side of said seal location, and (ii) a second gap is defined between said second lip and said interior neck surface on a second opposite side of said seal location.