Patent US3293802A successfully refreshed from Google Patents.
US3293802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightweight window unit
Assignee: JULIAN C RENFRO
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Filing: 1964-07-09
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Granted: 1966-12-27
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Expires: 1984-07-09
Abstract
No abstract record available.
Inventors
- 👤 George H Fletcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:11
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/44; E06B2003/4438; E06B2003/4453
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A WINDOW CONSTRUCTION COMPRISING FRAME AND SASH, SAID FRAME HAVING OPPOSITE SIDES IN WHICH CHANNELS OF ESSENTIALLY U-SHAPED CROSS SECTION ARE FORMED SAID SASH HAVING OPPOSITE SIDE EDGES SLIDABLY DISPOSED IN SAID CHANNELS, AT LEAST ONE GUIDE-BEARING SECURED TO AT LEAST ONE OF SAID SIDE EDGES OF SAID SASH, SAID GUIDE-BEARING HAVING A PORTION PARALLEL TO AND NORMALLY SPACED FROM THE PLANE OF SAID SASH, SAID PORTION BEING FLEXIBLE AND HAVING A SHOULDER THEREON NORMALLY ENGAGING AN EDGE OF THE RESPECTIVE U-SHAPED CHANNEL TO PREVENT SIDEWISE SASH MOVEMENT, THE LATTER CHANNEL BEING OF COMPARATIVELY DEEP CONSTRUCTION, THE LATTER EDGE BEING DISPOSED GENERALLY TOWARD THE CENTER OF SAID SASH, SAID SHOULDER COOPERATING WITH SAID LATTER EDGE TO NORMALLY SERVE AS A WINDOW SASH GUIDE MEANS, SAID PARALLEL PORTION OF SAID GUIDE-BEARING BEING
Claim 2
Dependent Claim
131 words
A WINDOW CONSTRUCTION COMPRISING FRAME AND SASH, SAID FRAME HAVING OPPOSITE SIDES IN WHICH CHANNELS OF ESSENTIALLY U-SHAPED CROSS SECTION ARE FORMED SAID SASH HAVING OPPOSITE SIDE EDGES SLIDABLY DISPOSED IN SAID CHANNELS, AT LEAST ONE GUIDE-BEARING SECURED TO AT LEAST ONE OF SAID SIDE EDGES OF SAID SASH, SAID GUIDE-BEARING HAVING A PORTION PARALLEL TO AND NORMALLY SPACED FROM THE PLANE OF SAID SASH, SAID PORTION BEING FLEXIBLE AND HAVING A SHOULDER THEREON NORMALLY ENGAGING AN EDGE OF THE RESPECTIVE U-SHAPED CHANNEL TO PREVENT SIDEWISE SASH MOVEMENT, THE LATTER CHANNEL BEING OF COMPARATIVELY DEEP CONSTRUCTION, THE LATTER EDGE BEING DISPOSED GENERALLY TOWARD THE CENTER OF SAID SASH, SAID SHOULDER COOPERATING WITH SAID LATTER EDGE TO NORMALLY SERVE AS A WINDOW SASH GUIDE MEANS, SAID PARALLEL PORTION OF SAID GUIDE-BEARING BEING
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |