US3182788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible idler assembly
Assignee: Hewitt Robins Inc
•
Filing: 1964-05-15
•
Granted: 1965-05-11
•
Expires: 1984-05-15
Abstract
No abstract record available.
Inventors
- 👤 Vincent J Donadio
- 👤 William F Bankauf
- 👤 Clayton H Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:42
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A FLEXIBLE IDLER FOR SUPPORTING AN ENDLESS CONVEYOR BELT IN A TROUGH SHAPE, WHICH IDLER COMPRISES A CENTRAL FLEXIBLE CORE AND A ROLLER MEANS ADAPTED TO CONTACT AND SUPPORT A CONVEYOR BELT AT SPACED POINTS ACROSS THE WIDTH OF THE BELT, SAID ROLLER MEANS COMPRISING A BODY OF RUBBERLIKE FLEXIBLE MATERIAL MOUNTED ON THE FLEXIBLE CORE EXTENDING LENGTHWISE OF THE CORE INTERMEDIATE ITS ENDS, SAID BODY HAVING AN UPSTANDING RIB-LIKE ELEMENT FORMED THEREON EXTENDING AROUND AND LENGTHWISE OF SAID BODY IN THE FORM OF A HELIX HAVING SPACED CONVOLUTIONS CONCENTRIC WITH SAID FLEXIBLE CORE, SAID RIB-LIKE ELEMENT DEFINING A ROOT PORTION OF SAID BODY EXTENDING BETWEEN ADJACENT CONVOLUTIONS OF SAID RIB-LIKE ELEMENT, SAID RIB-LIKE ELEMENT HAVING AN OUTER BELT CONTACTING SURFACE, SAID OUTER SURFACE BEING SPACED A SUBSTANTAL DISTANCE FROM THE ROOT PORTION THROUGH OUT THE CENTRAL PORTION OF SAID BODY, SAID ROOT PORTION BEING CONCENTRIC WEITH SAID FLEXIBLE CORE AND THE PERIPHERY OF THE ROOT PORTION PROGRESSIVELY INCREASING IN DIAMETER THROUGH AT LEAST TWO CONVOLUTIONS OF SAID RIB-LIKE ELEMENT, AT EACH END OF SAID BODY.
Claim 2
Dependent Claim
176 words
A FLEXIBLE IDLER FOR SUPPORTING AN ENDLESS CONVEYOR BELT IN A TROUGH SHAPE, WHICH IDLER COMPRISES A CENTRAL FLEXIBLE CORE AND A ROLLER MEANS ADAPTED TO CONTACT AND SUPPORT A CONVEYOR BELT AT SPACED POINTS ACROSS THE WIDTH OF THE BELT, SAID ROLLER MEANS COMPRISING A BODY OF RUBBERLIKE FLEXIBLE MATERIAL MOUNTED ON THE FLEXIBLE CORE EXTENDING LENGTHWISE OF THE CORE INTERMEDIATE ITS ENDS, SAID BODY HAVING AN UPSTANDING RIB-LIKE ELEMENT FORMED THEREON EXTENDING AROUND AND LENGTHWISE OF SAID BODY IN THE FORM OF A HELIX HAVING SPACED CONVOLUTIONS CONCENTRIC WITH SAID FLEXIBLE CORE, SAID RIB-LIKE ELEMENT DEFINING A ROOT PORTION OF SAID BODY EXTENDING BETWEEN ADJACENT CONVOLUTIONS OF SAID RIB-LIKE ELEMENT, SAID RIB-LIKE ELEMENT HAVING AN OUTER BELT CONTACTING SURFACE, SAID OUTER SURFACE BEING SPACED A SUBSTANTAL DISTANCE FROM THE ROOT PORTION THROUGH OUT THE CENTRAL PORTION OF SAID BODY, SAID ROOT PORTION BEING CONCENTRIC WEITH SAID FLEXIBLE CORE AND THE PERIPHERY OF THE ROOT PORTION PROGRESSIVELY INCREASING IN DIAMETER THROUGH AT LEAST TWO CONVOLUTIONS OF SAID RIB-LIKE ELEMENT, AT EACH END OF SAID BODY.
References Cited (Backward Citations)
US2837202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |