Coating implements with material supply – Including means to apply material-moving force – Piston-provided reservoir
Patent
1976-02-02
1977-07-05
Charles, Lawrence
Coating implements with material supply
Including means to apply material-moving force
Piston-provided reservoir
B43K 506
Patent
active
040337006
ABSTRACT:
A roll-on dispenser comprises a generally tubular barrel having an open forward end and a generally tubular ball-carrying member having an open rear end which is slidably received in the chamber of the barrel. The ball-carrying member has a ball applicator rollably mounted in its forward end. The rear end of the barrel is vented to the atmosphere, and a one-way follower device is slidably disposed in the barrel chamber for forward sliding movement. A cap is adapted to be threaded on the ball-carrying member and, when screwed thereon, pulls the ball-carrying member forwardly in the barrel chamber to increase the effective volume of the chamber and create a partial vacuum or sub-atmospheric pressure therein, whereupon the atmospheric pressure in the rear end of the barrel chamber will force the one-way follower forwardly by a distance corresponding to the volume of fluent material previously dispensed. When the cap is screwed on the ball-carrying member it causes compression of a compression spring to store energy therein. When the cap is removed the compression spring expands to release its stored energy and force the ball-carrying member rearwardly in the barrel chamber to pressurize the fluent material in the chamber.
REFERENCES:
patent: 3088636 (1963-05-01), Spatz
patent: 3471065 (1969-10-01), Malone
patent: 3560100 (1971-02-01), Spatz
patent: 3746261 (1973-07-01), Nozawa
patent: 3790034 (1974-02-01), Horvath
patent: 3797748 (1974-03-01), Nozawa et al.
Charles Lawrence
Spatz Corporation
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