Water projecting pump action pen

Details Water projecting pump action pen Water projecting pump action pen

1993-07-26

1994-08-23

DeMille, Danton D.

Coating implements with material supply

Combined

446180, 446475, B43K 2900

Patent

active

053402278

ABSTRACT:
The present invention is a toy pen having liquid projecting pump action capabilities. It includes a main housing and an upper section which, together, simulate a pen. The main housing and upper section include a liquid storage reservoir and a cylinder and piston. The piston and upper section are connected to one another so that reciprocation of the upper section causes the piston to reciprocate and pump liquid from the storage reservoir to the cylinder and from the cylinder to a nozzle for projection therefrom. Preferably, two one way valves are included, one to permit flow from the reservoir to the cylinder, but not vice versa, and the other to permit flow from the cylinder to the nozzle, but not vice versa. In preferred embodiments, there is an air vent which is closed when the piston is up, i.e. the cylinder is open, and which is open when the piston is not fully up.

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patent: 4703892 (1987-12-01), Nadel
patent: 4733799 (1988-03-01), Wiskur
patent: 5174477 (1992-12-01), Schafer

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