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 Title: |
US5204700:
Diving mask having distortionless peripheral vision
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Sansalone, Salvatore N.; Bramalea, Ontario, Canada
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| Assignee: |
None
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| Published / Filed: |
1993-04-20
/ 1990-10-31
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| Application Number: |
US1990000606457
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| IPC Code: |
Advanced:
B63C 11/12;
IPC-7:
G02C 1/00;
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| ECLA Code: |
B63C11/12;
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| U.S. Class: |
Current:
351/043;
351/041;
Original:
351/043;
351/041;
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| Field of Search: |
351/041,43
002/428-441
359/708,712
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| Priority Number: |
| 1990-10-31 |
US1990000606457 |
| 1991-10-31 |
CA1991002122607 |
| 1988-11-25 |
US1988000276470 |
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| Abstract: |
A diving mask comprising a supporting member for sealing engagement with the face of the user, a lens mounted in the supporting member near the eyes of the user to provide a low volume mask, a major portion of the lens being curved so that apparent magnification of images underwater is less than that observed through a conventional flat lens plate, certain portions of the lens being further curved to eliminate or mitigate pincushion-type distortion.
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| Attorney, Agent or Firm: |
Shlesinger, Arkwright & Garvey ;
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| Primary / Asst. Examiners: |
Bovernick, Rodney B.;
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| Maintenance Status: |
E2 Expired Check current status
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| INPADOC Legal Status: |
Show legal status actions
Family Legal Status Report
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