US3556638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deflector plate for light deflector
Assignee: International Business Machines Corp
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Filing: 1968-06-05
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Granted: 1971-01-19
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Expires: 1988-06-05
Abstract
Abstract A LIGHT DEFLECTOR COMPRISING TWO LIGHT TRANSPARENT MEMBERS HAVING ADJACENT SURFACES WHEREIN THE SECOND MEMBER IS MOVABLE INTO AND OUT OF OPTICAL CONTACT WITH THE FIRST. LIGHT BEING PASSED THROUGH THE FIRST MEMBER IS INTERCEPTED BY THE MEMBER''S SURFACE TO BE REFLECTED BY THE PRINCIPLE OF TOTAL INTERNAL REFLECTION WHEN THE SECOND MEMBER IS NOT IN CONTACT WITH THE FIRST. WITH THE SURFACES IN CONTACT, THE LIGHT WILL PASS ON INTO THE SECOND MEMBER AND BE REFLECTED ALONG A SEPARATE PATH FROM THE FIRST PATH. THIS INVENTION DEALS WITH MEANS FOR CONTROLLING THE POSITION OF THE SECOND MEMBER FOR REGULATING THE PATH OF THE BEAM.
Inventors
- 👤 Willard K Banks
- 👤 Melbourne E Rabedeau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:38
CPC Classifications
G; G02; G02B; G02B26/00; G02B26/02; G02B26/08; G02B26/0875; G02B26/0883
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |