Patent US3129752A successfully refreshed from Google Patents.
US3129752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding door
Assignee: T WHITING Manufacturing Inc
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Filing: 1960-11-25
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Granted: 1964-04-21
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Expires: 1980-11-25
Abstract
No abstract record available.
Inventors
- 👤 Theo C Whiting
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:16
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/02; E06B9/08; B; B60; B60J; B60J5/00; B60J5/10; B60J5/12; B60J5/14; E05; E05D; E05D13/00; E05D13/10; E05D13/12; E05D13/1207; E05D13/1215; E05D15/00; E05D15/16; E05D15/24; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/106; E05Y2900/50; E05Y2900/516; E05Y2900/53; E05Y2900/531
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
A DOOR FOR THE DOORWAY IN A STRUCTURE, COMPRISING A PAIR OF PARALLEL METAL RAILS ARRANGED ALONG OPPOSITE SIDES OF SAID DOORWAY AND HAVING PARALLEL PORTIONS CURVING AWAY FROM SAID DOORWAY, SAID RAILS BEING OF CHANNEL FORM IN CROSS-SECTION TO PROVIDE CHANNELS EXTENDING SUBSTANTIALLY THE FULL LENGTH THEREOF WITH THE OPEN MOUTHS OF SAID CHANNELS BEING IN OPPOSED RELATION TO EACH OTHER, A LATERALLY MANUALLY FLEXIBLE SHEET WHICH IS RIGID IN THE PLANAR DIRECTION OF ITS BROAD FACES AND HAS OPPOSITE GENERALLY PARALLEL EDGE PORTIONS CONTAINED IN SAID CHANNELS, BEARINGS FIXED TO EACH RAIL ALONG EACH SIDE OF ITS MOUTH AND EXTENDING SUBSTANTIALLY THE FULL LENGTH OF ITS RAIL AND SLIDINGLY SUPPORTING AND GUIDING SAID END PORTIONS OF SAID SHEET TO TRAVEL LENGTHWISE OF SAID RAILS, HORIZONTAL BARS FIXED TO OPPOSITE ENDS OF SAID SHEET ALONG THE LEADING AND TRAILING EDGES THEREOF, AND THRUST BEARINGS SECURED TO OPPOSITE ENDS OF SAID HORIZONTAL BARS AND ENGAGING OPPOSING EXTERNAL SIDES OF SAID RAILS TO MAINTAIN SAID SHEET IN CENTERED RELATION TO SAID RAILS.
Claim 2
Dependent Claim
171 words
A DOOR FOR THE DOORWAY IN A STRUCTURE, COMPRISING A PAIR OF PARALLEL METAL RAILS ARRANGED ALONG OPPOSITE SIDES OF SAID DOORWAY AND HAVING PARALLEL PORTIONS CURVING AWAY FROM SAID DOORWAY, SAID RAILS BEING OF CHANNEL FORM IN CROSS-SECTION TO PROVIDE CHANNELS EXTENDING SUBSTANTIALLY THE FULL LENGTH THEREOF WITH THE OPEN MOUTHS OF SAID CHANNELS BEING IN OPPOSED RELATION TO EACH OTHER, A LATERALLY MANUALLY FLEXIBLE SHEET WHICH IS RIGID IN THE PLANAR DIRECTION OF ITS BROAD FACES AND HAS OPPOSITE GENERALLY PARALLEL EDGE PORTIONS CONTAINED IN SAID CHANNELS, BEARINGS FIXED TO EACH RAIL ALONG EACH SIDE OF ITS MOUTH AND EXTENDING SUBSTANTIALLY THE FULL LENGTH OF ITS RAIL AND SLIDINGLY SUPPORTING AND GUIDING SAID END PORTIONS OF SAID SHEET TO TRAVEL LENGTHWISE OF SAID RAILS, HORIZONTAL BARS FIXED TO OPPOSITE ENDS OF SAID SHEET ALONG THE LEADING AND TRAILING EDGES THEREOF, AND THRUST BEARINGS SECURED TO OPPOSITE ENDS OF SAID HORIZONTAL BARS AND ENGAGING OPPOSING EXTERNAL SIDES OF SAID RAILS TO MAINTAIN SAID SHEET IN CENTERED RELATION TO SAID RAILS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |