Apparatus for manufacturing prophylactic devices
AssigneeCarter-Wallace, Inc.
InventorFrederick P. Sisbarro
Life of this patent
Estimating the term…
Abstract
Prophylactic devices are made in an inert atmosphere by cooling mandrels on which the devices are to be deposited, dipping the mandrels into a polymeric material in a solvent/carrier and a mold release agent, rotating the mandrels during and after the dipping, and evaporating the solvent after dipping. The apparatus includes an air lock between a section in which these functions are performed and a section located in an air atmosphere for removing the devices from the mandrels, followed by cleaning the mandrels for use in a subsequent production run for making devices.
Claims14
A mandrel assembly comprising:
- a mandrel consisting of non-electrically conductive material;
- an electrically conductive coating on said mandrel capable of being electrically charged to a given polarity for attracting airborne particles charged to the opposite polarity of said mandrel;
- and
- means for supplying in the vicinity of said mandrel airborne particles charged to said opposite polarity.
A mandrel assembly, comprising:
- a mandrel holder;
- a mandrel consisting of non-electrically conductive material, said mandrel being adapted for mounting engagement on said mandrel holder;
- an electrically conductive coating extending over a surface portion of said mandrel;
- and
- a reference potential source electrically connected to said conductive coating for creating an electrostatic field around said conductive coating on the mandrel to attract airborne particles with oppositely charged polarity thereto.
A mandrel assembly, comprising:
- a mandrel holder;
- a mandrel consisting of non-electrically conductive material, said mandrel being adapted for mounting engagement on said mandrel holder;
- an electrically conductive coating extending over a surface portion of said mandrel;
- a reference potential source electrically connected to said conductive coating for creating an electrostatic field around said conductive coating on the mandrel to attract airborne particles of oppositely charged polarity thereto;
- and
- a gear coupled to said mandrel holder, said gear being adapted for rotating the mandrel around its longitudinal axis selectively in a clockwise or counterclockwise direction, when the gear is appropriately rotated.
Dependencies are inferred from the claim text.