Patent US3203531A successfully refreshed from Google Patents.
US3203531A
Expired / Lapsed
US
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Detection device for conveyors
Assignee: RAPISTAN KEYSTONE Inc
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Filing: 1963-07-11
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Granted: 1965-08-31
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Expires: 1983-07-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Armand V Pretot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:58
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/16; B07C5/18; B07C5/20; B65; B65G; B65G47/00; B65G47/52; B65G47/60; B65G47/61
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A CONVEYOR SYSTEM COMPRISING A TRACK AND AT LEAST ONE LOAD CARRIER MOUNTED ON SAID TRACK TO MOVE ONE DIRECTION THEREALONG; CARRIER LOAD DIFFERENTIATING MEANS MOUNTED ALONG SAID TRACK; SAID DIFFERENTIATING MEANS COMPRISING: AN ELONGATED SHIFTABLE CAM TRACK DETECTOR BIASED IN INCREASING AMOUNTS INTO THE PATH OF SAID CARRIER IN SAID DIRECTION; SENSOR MEANS RESPONSIVE TO A SHIFT OF PREDETERMINED MAGNITUDE BY SAID DETECTOR MEANS; CONTACT MEANS ON SAID CARRIER TO ENGAGE AND RIDE ALONG SAID CAM TRACK WITH PASSING OF SAID CARRIER; SAID DETECTOR MEANS BEING SHIFTABLE OUT OF SAID CARRIER PATH OF SAID PREDETERMINED MAGNITUDE AGAINST THE BIASING FORCE BY ENGAGEMENT WITH SAID CONTACT MEANS ON A CARRIER LOADED TO A PREDETERMINED WEIGHT TO ACTUATE SAID SENSOR; AND SAID DETECTOR MEANS CAUSING TEMPORARY SHIFTING OF CARRIERS HAVING LOADS BELOW SAID WEIGHTS BY CAUSING SAID CONTACT MEANS TO FOLLOW SAID CAM TRACK, TO THEREBY DIFFERENTIATE THEREBETWEEN.
Claim 2
Dependent Claim
147 words
A CONVEYOR SYSTEM COMPRISING A TRACK AND AT LEAST ONE LOAD CARRIER MOUNTED ON SAID TRACK TO MOVE ONE DIRECTION THEREALONG; CARRIER LOAD DIFFERENTIATING MEANS MOUNTED ALONG SAID TRACK; SAID DIFFERENTIATING MEANS COMPRISING: AN ELONGATED SHIFTABLE CAM TRACK DETECTOR BIASED IN INCREASING AMOUNTS INTO THE PATH OF SAID CARRIER IN SAID DIRECTION; SENSOR MEANS RESPONSIVE TO A SHIFT OF PREDETERMINED MAGNITUDE BY SAID DETECTOR MEANS; CONTACT MEANS ON SAID CARRIER TO ENGAGE AND RIDE ALONG SAID CAM TRACK WITH PASSING OF SAID CARRIER; SAID DETECTOR MEANS BEING SHIFTABLE OUT OF SAID CARRIER PATH OF SAID PREDETERMINED MAGNITUDE AGAINST THE BIASING FORCE BY ENGAGEMENT WITH SAID CONTACT MEANS ON A CARRIER LOADED TO A PREDETERMINED WEIGHT TO ACTUATE SAID SENSOR; AND SAID DETECTOR MEANS CAUSING TEMPORARY SHIFTING OF CARRIERS HAVING LOADS BELOW SAID WEIGHTS BY CAUSING SAID CONTACT MEANS TO FOLLOW SAID CAM TRACK, TO THEREBY DIFFERENTIATE THEREBETWEEN.
References Cited (Backward Citations)
US3116823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |