Patent ID: 7434750

Claim:
Liquid spraying pistol comprising an external casing passed through by a channel within which a valve is slidingly housed which is biased by a spring and is operable by a start lever which is turnable between a closing position and a maximum opening position of said valve and a device for the locking and unlocking of said lever in the maximum opening position, a button elastically supported by said lever in such a way as to be able to provide, with the lever in the maximum opening position, a locking engagement between said lever and said external casing, said button being elastically deformable and providing a tooth hookable to said external casing at the end of the opening rotation of said lever and disengageable from it by pressure operation of the user on the button, said button having an upside inverted ″U″ shape, being a first side of said U integral with said lever, a second side elastically deformable by pressure induced by a user, and finally a central bridge for the elastically deformable connection with a tooth-shaped projection on its top part to engage with a similar projection integral with the top part of the external casing.