Patent US3202259A successfully refreshed from Google Patents.
US3202259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor systems for conveying goods
Assignee: Fisher and Ludlow Ltd
•
Filing: 1963-12-17
•
Granted: 1965-08-24
•
Expires: 1983-12-17
Abstract
No abstract record available.
Inventors
- 👤 Orwin Olaf John Barclay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:34
CPC Classifications
B; B61; B61B; B61B10/00; B61B10/02; B61B10/022; B61B10/025; B65; B65G; B65G17/00; B65G17/30; B65G17/38; B65G17/385; B65G2201/00; B65G2201/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
224 words
A CONVEYOR SYSTEM INCLUDING A PLURALITY OF WHEELED LOAD SUPPORTING TROLLEYS AND A SUPPORTING TROLLEY TRACK ALONG WHICH THE WHEELED TROLLEYS ARE ADAPTED TO BE ADVANCED, A LOAD SUPPORTING WHEEL OF EACH TROLLEY HAVING BRAKING MEANS, EACH BRAKING MEANS COMPRISING A WEDGE MEMBER ON THE TROLLEY ADJACENT THE PERIPHERY OF THE LOAD SUPPORTING WHEEL, THE WEDGE MEMBER HAVING A WEDGING SURFACE OF CONCAVE CONFIGURATION, THE AXIS OF CURVATURE OF WHICH IS ECCENTRIC IN RELATION TO THE AXIS OF ROTATION OF THE LOAD SUPPORTING WHEEL, SO THAT THE WEDGE SURFACE AND LOAD SUPPORTING WHEEL TREAD CONVEGE RELATIVELY IN A DIRECTION AROUND THE PERIPHERY OF THE WHEEL, CORRESPONDING TO THE DIRECTION OF WHEEL ROTATION WHEN THE TROLLEY ADVANCES IN THE REVERSE AS OPPOSED TO THE FORWARD DIRECTION, AND A BRAKING ELEMENT IN THE FORM OF A BALL DISPOSED BETWEEN THE TREAD OF SAID TROLLEY WHEEL AND THE WEDGE SURFACE OF SAID WEDGE MEMBER, THE ARRANGEMENT BEING SUCH THAT DURING NORMAL, I.E., FORWARD DIRECTION OF ADVANCEMENT, OF THE TROLLEY, THE BRAKING ELEMENT TENDS TO BE DISPLADED IN THE DIRECTION OF RELATIVE DIVERGENCE BETWEEN THE TREAD AND WEDGING SURFACE TO PERMIT OF FREE ROTATION OF THE TROLLEY WHEEL, AND DURING ANY REVERSE MOVEMENT OF THE TROLLEY THE BRAKING ELEMENT IS DISPLACED IN THE OPPOSITE DIRECTION, SO AS TO BECOME WEDGED BETWEEN THE WHEEL TREAD AND THE WEDGING SURFACE.
Claim 2
Dependent Claim
224 words
A CONVEYOR SYSTEM INCLUDING A PLURALITY OF WHEELED LOAD SUPPORTING TROLLEYS AND A SUPPORTING TROLLEY TRACK ALONG WHICH THE WHEELED TROLLEYS ARE ADAPTED TO BE ADVANCED, A LOAD SUPPORTING WHEEL OF EACH TROLLEY HAVING BRAKING MEANS, EACH BRAKING MEANS COMPRISING A WEDGE MEMBER ON THE TROLLEY ADJACENT THE PERIPHERY OF THE LOAD SUPPORTING WHEEL, THE WEDGE MEMBER HAVING A WEDGING SURFACE OF CONCAVE CONFIGURATION, THE AXIS OF CURVATURE OF WHICH IS ECCENTRIC IN RELATION TO THE AXIS OF ROTATION OF THE LOAD SUPPORTING WHEEL, SO THAT THE WEDGE SURFACE AND LOAD SUPPORTING WHEEL TREAD CONVEGE RELATIVELY IN A DIRECTION AROUND THE PERIPHERY OF THE WHEEL, CORRESPONDING TO THE DIRECTION OF WHEEL ROTATION WHEN THE TROLLEY ADVANCES IN THE REVERSE AS OPPOSED TO THE FORWARD DIRECTION, AND A BRAKING ELEMENT IN THE FORM OF A BALL DISPOSED BETWEEN THE TREAD OF SAID TROLLEY WHEEL AND THE WEDGE SURFACE OF SAID WEDGE MEMBER, THE ARRANGEMENT BEING SUCH THAT DURING NORMAL, I.E., FORWARD DIRECTION OF ADVANCEMENT, OF THE TROLLEY, THE BRAKING ELEMENT TENDS TO BE DISPLADED IN THE DIRECTION OF RELATIVE DIVERGENCE BETWEEN THE TREAD AND WEDGING SURFACE TO PERMIT OF FREE ROTATION OF THE TROLLEY WHEEL, AND DURING ANY REVERSE MOVEMENT OF THE TROLLEY THE BRAKING ELEMENT IS DISPLACED IN THE OPPOSITE DIRECTION, SO AS TO BECOME WEDGED BETWEEN THE WHEEL TREAD AND THE WEDGING SURFACE.
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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |