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 Title: |
US3868438:
Method for processing spectacle frames
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Fedon, Vigilio; Belluno, Italy
Di Vallesella, Frazione; Belluno, Italy
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| Assignee: |
Salottica S.r.l., Brescia, Italy
other patents from SALOTTICA S.R.L. (490380) (approx. 1)
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| Published / Filed: |
1975-02-25
/ 1973-06-08
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| Application Number: |
US1973000368121
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| IPC Code: |
Advanced:
B29D 12/02;
Core:
B29D 12/00;
IPC-7:
B29D 11/00;
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| U.S. Class: |
Current:
264/156;
264/154;
264/295;
351/178;
Original:
264/156;
264/154;
264/295;
351/178;
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| Field of Search: |
264/322,153,154,295,156
351/154,178
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| Priority Number: |
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| Abstract: |
A method for shaping spectacle frames is disclosed in which the shaping operation of a thermoplastic material slab is carried out in two times, namely: a first hot shaping operation shapes the curvature of the rim area and, if desired, also of the bridge area, the second stage, still in hot condition, being intended to define the meniscus shape of the lens rims.
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| Attorney, Agent or Firm: |
Waters, Roditi, Schwartz & Nissen ;
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| Primary / Asst. Examiners: |
Kucia, Richard R.;
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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 2 claims |
1. A method for fabricating spectacle frames having curved lens areas comprising the steps of: preparing a planar slab of thermoplastic material; hot-working said planar slab of thermoplastic material to pre-shape it with partially curved lens areas; milling said lens areas of said pre-shaped slab to provide apertures for the lenses; milling in a plane the internal sides of the lens rims surrounding said apertures to provide coplanar grooves for engaging the lenses; hot-working the pre-shaped and milled slab to meniscus-shape the lens rims and the grooves
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 1 U.S. patent(s) that reference this one
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