Patent ID: 7097073
Filing Date: 2006-08-29
Classification: F41B

Abstract:
1. A toy water gun, comprising: a housing including a handle with a trigger and a water ejection nozzle located thereon; a water supply tank connected to the housing which can be filled with water; a water pump located on the housing for pumping water from the supply tank to at least one water pressure chamber; the water pressure chamber including at least one fixed wall, a first end wall, and a moveable wall which substantially sealingly engages the at least one fixed wall and is slidable away from the first end wall as water is pumped into the water pressure chamber and toward the first end wall as water is discharged; an air pressure chamber located on an opposite side of the moveable wall from the water pressure chamber and being pressurizable with compressed air to bias the moveable wall toward the first end wall; an air pump connected to the air pressure chamber for pressurizing the air pressure chamber with a user desired air pressure; and a release valve in fluid communication with the water pressure chamber so that actuation of the release valve allows a stream of water to be ejected from the nozzle due at least in part to the compressed air acting on the moveable wall.