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US 4,218,038 AGranted
Mold for comb
OwnerNorman M. Garneau, Sr.inventor
Life of this patent
Estimating the term…
Abstract
Comb having teeth with generally rectangular cross-sections and apparatus for making the same.
Claims6
Apparatus for molding a comb from plastic, comprising:
- (a) a first mold half having a first flat surface onto which opens a cavity for an elongated comb back,
- (b) a plurality of spaced walls perpendicular to the long direction of said cavity and protruding from the flat surface of the first mold half and having a space between each adjacent pair leading to the the cavity, and
- (c) a second mold half similar to the first mold half having a second flat surface into which enters a cavity which is the mirror image of the first-mentioned cavity and having spaced walls that protrude beyond said second flat surface and are spaced from and lie between adjacent walls of the first mold half when the flat surfaces are in engagement, the walls being of such a length that the outer edges engage the surface of the opposing cavity to form a seal therewith, the spaces between the walls of one mold half and adjacent walls of the other mold half defining comb teeth forming cavities.
Apparatus for molding plastic comb, comprising:
- (a) a first mold half having a recess opening onto a flat face surface,
- (b) a second mold half having a recess opening onto a flat face surface, the recesses combining, when the flat surfaces are pressed together with the recesses in register, to form a cavity for forming the comb, and
- (c) a plurality of spacer walls extending from the surface of each recess, the walls of the first mold half being offset and spaced from the adjacent walls of the second mold half so that the ends of the walls extending from each recess are in contact with the surface of the opposite recess when the mold halves are together and the spaces between the walls of one mold half and adjacent walls of the other mold half define comb teeth forming cavities.
Dependencies are inferred from the claim text.