Lens hydration apparatus and method

Details Lens hydration apparatus and method Lens hydration apparatus and method

1998-09-03

2000-05-30

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Nonmechanical aftertreatment

134901, B29D 1100

Patent

active

060687983

ABSTRACT:
An apparatus and method for hydrating is provided for hydrating a lens and extracting residual materials from the lens. The apparatus includes a shaft; multiple arms extending radially from a lower end of the shaft about a central axis in a star-shaped pattern, each arm including a fin extending therebelow such that multiple fins also extend radially with respect to said central axis, wherein the fins including lower outer edges that converge and form a nozzle face. A fluid transport passage extends through the shaft and terminates at an opening in the nozzle face, whereby fluid can be evacuated from the lens through this passage. Preferably, at least one recessed channel is formed in the nozzle face where the fins converge, wherein each of these channels extends from the opening in the nozzle face that forms a terminus of the fluid transport passage to a space between two adjacent fins. The lower outer edges of the fins have an arcuate surface, the arcuate surfaces forming a convex-shaped nozzle face. Preferably, the outer tips of the arms extend radially from the central axis of the apparatus further than the fins extend.

REFERENCES:
patent: 5080839 (1992-01-01), Kindt-Larsen
patent: 5094609 (1992-03-01), Kindt-Larsen
patent: 5264161 (1993-11-01), Druskis et al.
patent: 5271875 (1993-12-01), Appleton et al.
patent: 5476111 (1995-12-01), Andersen et al.
patent: 5616184 (1997-04-01), Duncan et al.
patent: 5722536 (1998-03-01), Pierce et al.

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