Patent US3410290A successfully refreshed from Google Patents.
Patent US3233556A successfully refreshed from Google Patents.
US3233556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overhead monorail car
Assignee: Individual
•
Filing: 1964-09-29
•
Granted: 1966-02-08
•
Expires: 1984-09-29
Abstract
No abstract record available.
Inventors
- 👤 Eldon O Mcdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:01
CPC Classifications
B; B61; B61B; B61B13/00; B61B13/04; B60; B60V; B60V3/00; B60V3/02; B60V3/04; B61B3/00; B61B3/02; B61C; B61C11/00; B61C11/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN AN OVERHEAD MONORAIL TRANSPORT STRUCTURE, A TRACK COMPRISING A SERIES OF SPACED PILLARS, AND A WATER-RETAINING TROUGH CONNECTING AND SUPPORTED ON THE PILLARS AND HAVING HEAT CONDUCTIVE WALLS WITH DUCTS THEREIN FOR FLOW OF REFRIGERANT TO FREEZE THE WATER INTO A LAYER OF ICE IN THE TROUGH; A CAR RUNNING ON THE TRACK AND COMPRISING RUNNERS SLIDING ON THE ICE IN THE TRACK TROUGH, A CAR BODY SUPPORTED ON THE RUNNERS AND SUSPENDED BELOW THE TRACK, AND MEANS ON THE CAR FOR PRODUCING A FORWARD THRUST THEREON BY REACTION ON THE AIR BEHIND THE CAR; AND PLURAL REFRIGERATING UNITS SEVERALLY MOUNTED ON THE PILLARS FOR MAINTAINING FLOW OF REFRIGERANT THROUGHOUT THE TROUGH DUCTS.
Claim 2
Dependent Claim
114 words
IN AN OVERHEAD MONORAIL TRANSPORT STRUCTURE, A TRACK COMPRISING A SERIES OF SPACED PILLARS, AND A WATER-RETAINING TROUGH CONNECTING AND SUPPORTED ON THE PILLARS AND HAVING HEAT CONDUCTIVE WALLS WITH DUCTS THEREIN FOR FLOW OF REFRIGERANT TO FREEZE THE WATER INTO A LAYER OF ICE IN THE TROUGH; A CAR RUNNING ON THE TRACK AND COMPRISING RUNNERS SLIDING ON THE ICE IN THE TRACK TROUGH, A CAR BODY SUPPORTED ON THE RUNNERS AND SUSPENDED BELOW THE TRACK, AND MEANS ON THE CAR FOR PRODUCING A FORWARD THRUST THEREON BY REACTION ON THE AIR BEHIND THE CAR; AND PLURAL REFRIGERATING UNITS SEVERALLY MOUNTED ON THE PILLARS FOR MAINTAINING FLOW OF REFRIGERANT THROUGHOUT THE TROUGH DUCTS.
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |