The Larami Corporation of Philadelphia, PA
patented an ingenious new type of watergun. It uses a high-pressure reservoir
partially filled with air under pressure. This HYDRAULIC ACCUMULATOR had never
been used in toy waterguns before.
A hand-operated piston forces first air,
then water into the high-pressure reservoir (the circular ball.) Pulling the trigger
releases a stream that can go 50 feet!
The trigger is a spring-loaded pincher
which holds the vinyl tube shut. If you pump too much, pressure opens the trigger-valve
and water dribbles out the nozzle, long before the high-presssure areas would
Download an animation of this pump!