US3340401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motionless data input key
Assignee: Xerox Corp
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Filing: 1963-12-26
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Granted: 1967-09-05
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Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 James E Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:27
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/94; H03K17/941; H03K17/96; H03K17/9627; H03K17/9629; H03K17/9631
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
AN INTEGRAL DATA INPUT KEY COMPRISING (A) A CAP HAVING AREAS THEREOF OF VARIABLY DIFFERENT LIGHT TRANSMITTING PROPERTIES AND SECURED TO A SUPPORTING BASE; (B) A LIGHT SOURCE; (C) MEANS FORMING A LIGHT ENCLOSING DUCT INTERNALLY EXTENDING THROUGH SAID BASE AND COMMUNICATING LIGHT FROM SAID SOURCE AGAINST SAID CAP; (D) MEANS FORMING A SECOND LIGHT ENCLOSING DUCT INTERNALLY EXTENDING THROUGH SAID BASE DISPLACED FROM SAID FIRST DUCT AND DISPOSED WITH SAID CAP IN REFLECTING LIGHT RELATION THERETO TO LIGHT COMMUNICATED BY SAID FIRST DUCT; AND, (E) PHOTOELECTRIC MEANS SUPPORTED IN SAID SECOND DUCT AND RESPONSIVE TO A DISCRETE CHARGE IN REFLECTION DENSITY IN THE SAID SECOND DUCT TO EMIT AN ELECTRICAL SIGNAL OUTPUT TO UTILIZATION APPARATUS.
Claim 2
Dependent Claim
116 words
AN INTEGRAL DATA INPUT KEY COMPRISING (A) A CAP HAVING AREAS THEREOF OF VARIABLY DIFFERENT LIGHT TRANSMITTING PROPERTIES AND SECURED TO A SUPPORTING BASE; (B) A LIGHT SOURCE; (C) MEANS FORMING A LIGHT ENCLOSING DUCT INTERNALLY EXTENDING THROUGH SAID BASE AND COMMUNICATING LIGHT FROM SAID SOURCE AGAINST SAID CAP; (D) MEANS FORMING A SECOND LIGHT ENCLOSING DUCT INTERNALLY EXTENDING THROUGH SAID BASE DISPLACED FROM SAID FIRST DUCT AND DISPOSED WITH SAID CAP IN REFLECTING LIGHT RELATION THERETO TO LIGHT COMMUNICATED BY SAID FIRST DUCT; AND, (E) PHOTOELECTRIC MEANS SUPPORTED IN SAID SECOND DUCT AND RESPONSIVE TO A DISCRETE CHARGE IN REFLECTION DENSITY IN THE SAID SECOND DUCT TO EMIT AN ELECTRICAL SIGNAL OUTPUT TO UTILIZATION APPARATUS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |