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 Title: |
US4132518:
Apparatus for manufacturing plastic lenses
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Rips, Irving; Beverly Hills, CA
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| Assignee: |
Realite Optical Company, Los Angeles, CA
other patents from REALITE OPTICAL COMPANY (466880) (approx. 1)
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| Published / Filed: |
1979-01-02
/ 1977-10-18
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| Application Number: |
US1977000843170
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| IPC Code: |
Advanced:
B29C 35/02;
B29C 39/38;
B29D 11/00;
B29C 35/04;
IPC-7:
B29C 1/00;
B29D 11/00;
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| ECLA Code: |
B29D11/00C4Y2C2; B29C35/02M; B29C39/38; B29D11/00C22; L29C35/04; L29K105/00C; L29L11/00C;
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| U.S. Class: |
Current:
425/143;
249/105;
249/117;
425/445;
425/808;
Original:
425/143;
425/445;
425/808;
249/117;
249/105;
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| Field of Search: |
425/143,445,808
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| Priority Number: |
| 1977-10-18 |
US1977000843170 |
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| Abstract: |
A method and apparatus for forming lenses from a polymerizable monomeric liquid. In accordance with the method of the invention, the activated monomer is encapsulated within lens molds of unique design and is exposed to a precisely controlled atmosphere within the apparatus of the invention. More particularly, during the entire curing cycle of the monomer the molds are uniformly exposed to collimated streams of air maintained at closely controlled temperatures. The streams of air serve to precisely control the temperature of the monomer within the molds and to continuously remove the heat of exotherm from each individual mold.
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| Attorney, Agent or Firm: |
Brunton, James E. ;
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| Primary / Asst. Examiners: |
Flint, Jr., I. Howard;
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| INPADOC Legal Status: |
None
Family Legal Status Report
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| Family: |
Show 5 known family members
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First Claim:
Show all 10 claims |
I claim:
1. An apparatus for controllably heating an exothermic liquid mixture contained in a mold comprising:
- (a) a mold for containing the exothermic mixture;
- (b) an elongated enclosure having interconnected top, bottom, and side walls;
- (c) vertically spaced apart transversely extending first and second internal walls interconnected to said side walls of said enclosure to define an upper plenum, a lower plenum and a longitudinally extending central passageway therebetween, said internal walls each being provided with a multiplicity of spaced apart apertures;
- (d) air-circulating means for circulating air between said upper and lower plenums through said intermediate passageway;
- (e) heating means for controllably heating the air being circulated through said intermediate passageway; and
- (f) conveyor means for transporting the mold through said intermediate passageway at a controlled rate of speed.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 92 U.S. patent(s) that reference this one
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