US3204299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plug door
Assignee: Pullman Standard Inc
•
Filing: 1963-11-12
•
Granted: 1965-09-07
•
Expires: 1983-11-12
Abstract
No abstract record available.
Inventors
- 👤 James J Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:30
CPC Classifications
E; E05; E05B; E05B83/00; E05B83/02; E05B83/08; E05B83/10; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/46; E06B3/4636
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN COMBINATION, AN OPENING DEFINED BY UPPER, LOWER AND SIDE FRAME MEMBERS, A PAIR OIF TRACKS ADJACENT SAID UPPER AND LOWER FRAME MEMBERS, A PLUG DOOR IN SAID OPENING, ACTUATING MEANS TO MOVE SAID PLUG DOOR OUT OF SAID OPENING, SAID ACTUATING MEANS INCLUDING FIRST AND SECOND SHAFTS CONNECTED TO AN OUTWARDLY FACING SIDE OF SAID DOOR AND ROTATABLE ABOUT A VERTICAL AXIS, CRANK MEANS AT OPPOSITE ENDS OF EACH SAID SHAFTS, SAID CRANK MEANS BEING RECEIVED IN A GUIDING CHANNEL IN EACH OF SAID TRACKS, A ROLLER AT THE LOWER END OF EACH OF SAID SHAFTS, EACH OF SAID ROLLERS ENGAGING A PORTION OF THE LOWER TRACKS INWARDLY OF SAID GUIDING CHANNEL WHEN SAID PLUG DOOR IS SNUGLY RECEIVED IN SAID FRAME, AND BEING ADAPTED ON ROTATION OF THE ASSOCIATED SHAFT TO BE MOVED TO A PORTION OF
Claim 2
Dependent Claim
139 words
IN COMBINATION, AN OPENING DEFINED BY UPPER, LOWER AND SIDE FRAME MEMBERS, A PAIR OIF TRACKS ADJACENT SAID UPPER AND LOWER FRAME MEMBERS, A PLUG DOOR IN SAID OPENING, ACTUATING MEANS TO MOVE SAID PLUG DOOR OUT OF SAID OPENING, SAID ACTUATING MEANS INCLUDING FIRST AND SECOND SHAFTS CONNECTED TO AN OUTWARDLY FACING SIDE OF SAID DOOR AND ROTATABLE ABOUT A VERTICAL AXIS, CRANK MEANS AT OPPOSITE ENDS OF EACH SAID SHAFTS, SAID CRANK MEANS BEING RECEIVED IN A GUIDING CHANNEL IN EACH OF SAID TRACKS, A ROLLER AT THE LOWER END OF EACH OF SAID SHAFTS, EACH OF SAID ROLLERS ENGAGING A PORTION OF THE LOWER TRACKS INWARDLY OF SAID GUIDING CHANNEL WHEN SAID PLUG DOOR IS SNUGLY RECEIVED IN SAID FRAME, AND BEING ADAPTED ON ROTATION OF THE ASSOCIATED SHAFT TO BE MOVED TO A PORTION OF
References Cited (Backward Citations)
US257680A
Cited
US2992462A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |