US3173017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for sorting objects according to color
Assignee: FMC Corp
•
Filing: 1961-07-17
•
Granted: 1965-03-09
•
Expires: 1981-07-17
Abstract
No abstract record available.
Inventors
- 👤 Louis C Thayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:37
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/34; B07C5/342
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
APPARATUS FOR SORTING OBJECTS BY COLOR COMPRISING MEANS FOR ILLUMINATING THE OBJECTS, PHOTOELECTRIC MEANS, MEANS FOR DIRECTING THE BEAMS REFLECTED FOR THE OBJECTS TO SAID PHOTOELECTRIC MEANS AS ALTERNATE BEAMS OF DIFFERENT WAVE LENGTHS, SAID PHOTOELECTRIC MEANS PRODUCING ALTERNATE VOLTAGE PULSES RESPECTIVELY PROPORTIONAL TO THE INTENSITY OF THE BEAMS REFLECTED FROM THE OBJECTS AT SAID WAVE LENGHTS; SIGNAL MEANS CONNECTED TO SAID PHOTOELECTRIC MEANS, SAID SIGNAL MEANS COMPRISING MEANS FOR ISOLATING THE ALTERNATING COMPONENT OF SAID PULSES TO PRODUCE AN ALTERNATING CURRENT SIGNAL, MEANS FOR AVERAGING SAID ALTERNATE PULSES IN A DIRECT CURRENT SIGNAL, MEANS FOR ADDING SAID ALTERNATING CURRENT SIGNAL AND A COMPONENT OF SAID DIRECT CURRENT SIGNAL TO PRODUCE CONTROL PULSE SIG-
Claim 2
Dependent Claim
114 words
APPARATUS FOR SORTING OBJECTS BY COLOR COMPRISING MEANS FOR ILLUMINATING THE OBJECTS, PHOTOELECTRIC MEANS, MEANS FOR DIRECTING THE BEAMS REFLECTED FOR THE OBJECTS TO SAID PHOTOELECTRIC MEANS AS ALTERNATE BEAMS OF DIFFERENT WAVE LENGTHS, SAID PHOTOELECTRIC MEANS PRODUCING ALTERNATE VOLTAGE PULSES RESPECTIVELY PROPORTIONAL TO THE INTENSITY OF THE BEAMS REFLECTED FROM THE OBJECTS AT SAID WAVE LENGHTS; SIGNAL MEANS CONNECTED TO SAID PHOTOELECTRIC MEANS, SAID SIGNAL MEANS COMPRISING MEANS FOR ISOLATING THE ALTERNATING COMPONENT OF SAID PULSES TO PRODUCE AN ALTERNATING CURRENT SIGNAL, MEANS FOR AVERAGING SAID ALTERNATE PULSES IN A DIRECT CURRENT SIGNAL, MEANS FOR ADDING SAID ALTERNATING CURRENT SIGNAL AND A COMPONENT OF SAID DIRECT CURRENT SIGNAL TO PRODUCE CONTROL PULSE SIG-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |