Method and apparatus for cleaning ophthalmic lenses and blocks

Details Method and apparatus for cleaning ophthalmic lenses and blocks Method and apparatus for cleaning ophthalmic lenses and blocks

1999-11-24

2000-08-29

Stinson, Frankie L.

Cleaning and liquid contact with solids

Processes

Including application of electrical radiant or wave energy...

134 32, 134 254, B08B 310

Patent

active

061092762

ABSTRACT:
A process and machine for cleaning ophthalmic lenses and blocks heats a washing solution in a wash tank and a rinsing solution in a rinse tank to approximately 140.degree. F. Ultrasonic wave agitation is then initiated in the solutions. A set of lenses or blocks is immersed in the ultrasonically agitated washing solution for approximately one-half the predetermined time of the wash cycle. Mechanical agitation of the immersed set of lenses or blocks is initiated in the ultrasonically agitated washing solution for the remainder of the predetermined time of the wash cycle. The set of lenses or blocks is then raised above the washing solution for a predetermined drip period. The set of lenses or blocks is then immersed in the ultrasonically agitated rinsing solution for approximately one-half the predetermined time of the rinse cycle. Mechanical agitation of the immersed set of lenses or blocks is initiated in the ultrasonically agitated rinsing solution for the remainder of the predetermined time of the rinse cycle. The set of lenses or blocks is then raised above the rinsing solution for a predetermined drip period.

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patent: 5924431 (1999-07-01), Rich et al.
patent: 5928432 (1999-07-01), Foederl et al.

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