US PATENT SUBCLASS 124 / 66
.~.~.~.~ By spring-driven plunger

Current as of: June, 1999
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124 /   HD   MECHANICAL GUNS AND PROJECTORS

56  DF  FLUID PRESSURE {9}
63  DF  .~ Provided by movement of user-actuated, projector-mounted pressure member {2}
64  DF  .~.~ To create surge of pressure {1}
65  DF  .~.~.~ By plunger moving within cylinder {1}
66.~.~.~.~ By spring-driven plunger {1}
67  DF  .~.~.~.~.~> Within cylinder having diameter larger than projector barrel {1}

DEFINITION

Classification: 124/66

(under subclass 65) Apparatus wherein the driving of said piston is caused by a resilient element.

(1) Note. In this subclass the user's energy is usually stored in a spring (usually by compressing the spring) which is subsequently released to drive the piston that pressurizes the impelling fluid.