Patent ID: 7980423

Claim:
An apparatus for discharging a stream of fluid, comprising: a fluid reservoir; a secondary fluid chamber in fluid communication with the fluid reservoir; a ratchet mechanism comprising at least one tooth, a piston slidably disposed in the secondary fluid chamber, and a spring, the ratchet mechanism being movable between a first position and a second position, the spring urging said ratchet mechanism toward the second position, the piston being configured to draw fluid from the fluid reservoir into the secondary fluid chamber when the ratchet mechanism is moved toward the first position and to discharge the fluid from the secondary fluid chamber during spring induced movement of the ratchet mechanism to the second position; a manually actuatable trigger mechanism comprising a pawl that interacts with the at least one tooth and movable from a rest position to a pulled position, the trigger mechanism being configured to arrest the spring induced movement of the ratchet mechanism by interaction with the at least one tooth in the rest position and allow the spring induced movement of the ratchet mechanism in the pulled position; a pump mechanism in fluid communication with the fluid reservoir through a conduit; and a handle selectively connectable to the ratchet mechanism and configured to manually move the ratchet mechanism to the first position against the urgency of the spring, wherein the handle is selectably connectable to the pump mechanism, the handle being movable from a first position to a second position, wherein the handle is connected to the ratchet mechanism in the first position and connected to the pump mechanism in the second position to pump air into the fluid reservoir to increase pressure in the fluid reservoir.