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US 4,726,700 AGranted
Rub-on applicator
OwnerJames R. Grayinventor
Life of this patent
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OwnerJames R. Grayinventor
Estimating the term…
A rub-on applicator for rubbing liquid onto a surface to be coated. The applicator includes a flexible compressible bottle containing the liquid to be dispensed. The mouth of the bottle is covered by a thin flexible molded diaphragm sealed to the lip of the bottle. The diaphragm is formed with a small, centrally located, permanently open hole. In one embodiment, the diaphragm normally projects concavely under suction forces into the bottle, but is sufficiently flexible that by squeezing and compressing the bottle, the diaphragm will be forced by compression of fluid in the bottle to project convexly outward of the bottle with a broadly rounded outer surface, so that by turning the bottle upside down and squeezing the bottle, liquid within the bottle is forced therefrom onto to a surface to be coated. Since the hole in the diaphragm is permanently open, when the applicator is upright with the diaphragm in its normally inwardly projecting position, any liquid on the outer surface of the diapraghm will flow through the hole into the bottle.
A rub-on applicator for rubbing a liquid onto a surface to be coated, comprising a compressible container having a mouth at an upper end thereof, for containing a liquid to be rubbed on a surface, a thin flexible cupped diaphragm having a periphery, said diaphragm being sealed at said periphery to said mouth of said container, said diaphragm having an outer surface facing outward of said container cupped entirely concavely and inwardly of said container, said diaphragm having at least one permanently open hole therein so that a majority of the liquid accumulated on said outer surface when said outer surface is cupped concavely inwardly flows through said at least one hole into said container, said diaphragm being sufficiently flexible as to be moveable in an outward direction so as to project outwardly of said container such that said outer surface is substantially entirely convex, in response to compression of said container.
A rub-on applicator for rubbing a liquid onto a surface to be coated, comprising:
Dependencies are inferred from the claim text.