Patent US3200768A successfully refreshed from Google Patents.
US3200768A
Expired / Lapsed
US
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Conveyor system with accumulating trolley units
Assignee: Mechanical Handling Systems Inc
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Filing: 1963-09-04
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Granted: 1965-08-17
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Expires: 1983-09-04
Abstract
No abstract record available.
Inventors
- 👤 Homer S Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:34
CPC Classifications
B; B61; B61B; B61B10/00; B61B10/02; B61B10/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A CONVEYOR SYSTEM, THE COMBINATION COMPRISING A TRACK, A PLURALITY OF TROLLEY UNITS MOVABLE ALONG SAID TRACK, EACH SAID TROLLEY UNIT BEING PROVIDED WITH A PUSHER DOG WHICH IS MOVABLE TO AND FROM DRIVING AND RETRACTED POSITIONS, A REAR BUMPER AND A FRONT BUMPER ON EACH SAID TROLLEY UNIT, SAID FRONT BUMPER BEING MOVABLE REARWARDLY UPON ENGAGEMENT WITH AN OBSTACLE, MEANS ON EACH SAID TROLLEY UNIT ACTUATED BY REARWARD MOVEMENT OF THE FRONT BUMPER TO RETRACT SAID MOVABLE PUSHER DOG, AND CAM MEANS ON EACH SAID TROLLEY UNIT OPERATED BY MOVEMENT OF SAID FROANT BUMPER TO ENGAGE AND LOCK SAID TROLLEY UNIT RELATIVE TO SAID TRACK TO PREVENT REARWARD MOVEMENT OF SAID TROLLEY UNIT ALONG SAID TRACK.
Claim 2
Dependent Claim
118 words
IN A CONVEYOR SYSTEM, THE COMBINATION COMPRISING A TRACK, A PLURALITY OF TROLLEY UNITS MOVABLE ALONG SAID TRACK, EACH SAID TROLLEY UNIT BEING PROVIDED WITH A PUSHER DOG WHICH IS MOVABLE TO AND FROM DRIVING AND RETRACTED POSITIONS, A REAR BUMPER AND A FRONT BUMPER ON EACH SAID TROLLEY UNIT, SAID FRONT BUMPER BEING MOVABLE REARWARDLY UPON ENGAGEMENT WITH AN OBSTACLE, MEANS ON EACH SAID TROLLEY UNIT ACTUATED BY REARWARD MOVEMENT OF THE FRONT BUMPER TO RETRACT SAID MOVABLE PUSHER DOG, AND CAM MEANS ON EACH SAID TROLLEY UNIT OPERATED BY MOVEMENT OF SAID FROANT BUMPER TO ENGAGE AND LOCK SAID TROLLEY UNIT RELATIVE TO SAID TRACK TO PREVENT REARWARD MOVEMENT OF SAID TROLLEY UNIT ALONG SAID TRACK.
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |