Ophthalmic lens mold seal
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 24, 1993
Grant Date -
N/A
app pub date -
Dec 6, 1991
filing date -
Dec 6, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus for molding a soft ophthalmic lens, having a male and female portion, one having around the periphery of the optical surface a knife edge and one containing a rim bushing peripherally exterior to the knife edge. The two portions are mated so that the knife edge deformably penetrates the other portion. Excess material is expelled from the mold cavity and separated from the lens by a region of prepolymer discontinuity defined by the rim bushing contact area. The mold portion containing the rim bushing is produced by using a cylindrical insert and an annular sleeve machined to have the rim bushing on the surface of one end.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully