Coating implements with material supply – Including means to apply material-moving force – Including means to collapse flexible wall
Patent
1977-12-02
1979-12-04
Coughenour, Clyde I.
Coating implements with material supply
Including means to apply material-moving force
Including means to collapse flexible wall
401184, 401276, 401287, A46B 1102
Patent
active
041769805
ABSTRACT:
A toothbrush and dentifrice combination, at least partially disposable, including an elongated handle having a central axis and an elongated cavity offset from the central axis therein, the offset cavity containing an amount of dentifrice material and defining a thin-walled portion and a thick-walled portion in the handle, and a head being attached to the handle and having an inner elongated cavity and a number of bristles defining a brushing surface thereon, the head further including three outlet openings in the brushing surface connected to the inner elongated cavity therein, which is in turn connected to the offset cavity in the handle. The handle is one integral piece of a resilient thermoplastic material and the thin-walled portion in the handle is readily compressible within its elastic limit a sufficient amount to collapse the offset cavity in the handle and force the dentifrice material into the inner cavity in the head and out through the outlet openings in the brushing surface. Also provided is an air intake aperture and hinged flap arrangement in the handle for preventing air from entering the offset cavity in the handle while the resilient thin-walled portion is being compressed and for then allowing air to enter the offset cavity after the compressing and while the resilient thin-walled portion returns to its original configuration.
REFERENCES:
patent: 1142566 (1915-06-01), Jackson
patent: 2795000 (1957-06-01), Lomholdt
patent: 3653778 (1972-04-01), Freiling
patent: 3738762 (1973-06-01), Moore et al.
O'Neal Chester L.
O'Neal Danny C.
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