US3221507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential inclined railway transit means
Assignee: Individual
•
Filing: 1962-11-13
•
Granted: 1965-12-07
•
Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Stanley J Grossman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:51
CPC Classifications
E; E02; E02C; E02C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A TRANSIT MEANS HAVING ASCENDING AND DESCENDING WAYS, A HORIZONTAL CREST SECTION CONNECTING SAID WAYS, SAID WAYS HAVING POSITIVE AND NEGATIVE SLOPES OF THE SAME NUMERICAL VALUE ON OPPOSITE SIDES OF SAID CREST SECTION, A PLURALITY OF WAYS ON SAID CREST RUNNING PARALLEL WITH THE LONGITUDINAL AXIS OF SAID MEANS, THE WAYS ON SAID CREST AND ON ONLY ONE SIDE THEREOF BEING DISPLACED VERTICALLY FROM ONE ANOTHER, A MOBILE CARRIAGE HAVING A PLURALITY OF WHEEL ASSEMBLIES, EQUAL IN NUMBER TO SAID WAYS, ADAPTED TO RUN THEREON, THE DIFFERENCE IN ELEVATION (H) BETWEEN ANY TWO ADJACENT OF THE AFORESAID VERTICALLY DISPLACED WAYS AND THE ALIGNMENT OF SAID WHEEL ASSEMBLIES ON SAID TWO WAYS BEING DEFINED BY THE EQUATION:
Claim 2
Dependent Claim
117 words
A TRANSIT MEANS HAVING ASCENDING AND DESCENDING WAYS, A HORIZONTAL CREST SECTION CONNECTING SAID WAYS, SAID WAYS HAVING POSITIVE AND NEGATIVE SLOPES OF THE SAME NUMERICAL VALUE ON OPPOSITE SIDES OF SAID CREST SECTION, A PLURALITY OF WAYS ON SAID CREST RUNNING PARALLEL WITH THE LONGITUDINAL AXIS OF SAID MEANS, THE WAYS ON SAID CREST AND ON ONLY ONE SIDE THEREOF BEING DISPLACED VERTICALLY FROM ONE ANOTHER, A MOBILE CARRIAGE HAVING A PLURALITY OF WHEEL ASSEMBLIES, EQUAL IN NUMBER TO SAID WAYS, ADAPTED TO RUN THEREON, THE DIFFERENCE IN ELEVATION (H) BETWEEN ANY TWO ADJACENT OF THE AFORESAID VERTICALLY DISPLACED WAYS AND THE ALIGNMENT OF SAID WHEEL ASSEMBLIES ON SAID TWO WAYS BEING DEFINED BY THE EQUATION:
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |