Valve-actuated suction apparatus with rotation-preventing plunger valve

Abstract

A valve-actuated suction apparatus includes an elastomeric seal member arranged to seal against a surface and having a vent port extending therethrough. A collar has a collar opening extending therethrough that is aligned and in fluid communication with the vent port. A plunger valve is slidably arranged in the collar opening in a manner that prevents rotation of the plunger valve relative to the collar. The plunger valve is slidable between a plunger valve closed position and a plunger valve open position to selectively seal and unseal the seal member vent port. During use, the seal member may be pressed into sealing contact with a surface. The plunger valve may be pressed into its closed position to thereby seal the vent port. Should an attempt be made to rotate the plunger valve relative to the collar, rotation will be prevented due to the plunger valve rotation prevention design.

Dependencies are inferred from the claim text.