US3606839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transportation system
Assignee: Individual
•
Filing: 1968-07-23
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Granted: 1971-09-21
•
Expires: 1988-07-23
Abstract
Abstract THE DISCLOSURE IS OF A TRANSPORTATION SYSTEM WHICH INCLUDES AN ELONGATED RAIL SUPPORT WHICH CARRIES THREE PARALLEL SPACED-APART RAILS WHICH SERVE AS RUNNING SURFACES. TWO OF THE RAILS HAVE RUNNING SURFACES TO ACCOMMODATE GUIDE WHEELS AND THE THIRD RAIL HAS A RUNNING SURFACE TO ACCOMMODATE GUIDE WHEELS AND THE THIRD RAIL HAS A RUNNING SURFACE TO ACCOMMODATE A MAIN DRIVE WHEEL OF A POWERED RACK MEMBER HAVING WHEELS WHICH MOVE ALONG THE RAILS AND WHICH CAN CARRY VARIOUS PAYLOADS. A SWITCH SECTION IS PROVIDED FOR SELECTIVELY DIRECTING RACK MEMBERS OVER A MAIN ROUTE OR FOR MOVING THEM ONTO AN ALTERNATIVE ROUTE.
Inventors
- 👤 Neil S Stafford
- 👤 Justin M Jacobs Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:36
CPC Classifications
B; B61; B61B; B61B5/00; B61B5/02
Claims Analysis
Total Claims: 0
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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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |