Patent US4068409A successfully refreshed from Google Patents.
US4068409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-racking means for doors
Assignee: White Welding and Manufacturing Inc
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Filing: 1976-12-27
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Granted: 1978-01-17
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Expires: 1996-12-27
Abstract
Abstract A first bracket is secured to one of a pair of doors hinged to a door frame for closing the same; a second bracket is secured to the other of the pair of doors; and the brackets are disposed in overlapping relationship, and include means which are interengageable, when the doors are in closed position.
Inventors
- 👤 Clarence E. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:23
CPC Classifications
E; E05; E05B; E05B83/00; E05B83/02; E05B83/08; E05B83/10; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1044; Y10T292/1045; Y10T292/1049
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
248 words
In an apparatus including anti-racking means for use with a door frame, a pair of doors vertically hinged to the frame and presenting free edges which are adjacently located when the doors are in closed position, and rotary bar door locking mechanism, said anti-racking means comprising a first bracket having a base portion secured to one of the doors and having a side portion adjacent the free edge of the door, a second bracket having a base portion secured to the other door and having a side portion adjacent the free edge of said other door, said side portions of said brackets being provided with interengageable means, said side portions of said backets being disposed in overlapping relationship when the doors are in closed position, and said interengageable means being interengaged when the doors are in closed position for reinforcing the doors and the door frame, the improvement comprising: said side portion of a first of said brackets being formed with a vertically oriented tongue extending perpendicular to the plane of the one door, and a vertically oriented aperture; and said side portion of the second of said brackets being formed with a vertically oriented tongue extending perpendicular to the plane of the other door, and a vertically oriented aperture; said tongue of said first bracket being interengaged with said aperture of said second bracket, and said tongue of said second bracket being interengaged with said aperture of said first bracket, when the doors are in closed position.
Claim 2
Dependent Claim
248 words
In an apparatus including anti-racking means for use with a door frame, a pair of doors vertically hinged to the frame and presenting free edges which are adjacently located when the doors are in closed position, and rotary bar door locking mechanism, said anti-racking means comprising a first bracket having a base portion secured to one of the doors and having a side portion adjacent the free edge of the door, a second bracket having a base portion secured to the other door and having a side portion adjacent the free edge of said other door, said side portions of said brackets being provided with interengageable means, said side portions of said backets being disposed in overlapping relationship when the doors are in closed position, and said interengageable means being interengaged when the doors are in closed position for reinforcing the doors and the door frame, the improvement comprising: said side portion of a first of said brackets being formed with a vertically oriented tongue extending perpendicular to the plane of the one door, and a vertically oriented aperture; and said side portion of the second of said brackets being formed with a vertically oriented tongue extending perpendicular to the plane of the other door, and a vertically oriented aperture; said tongue of said first bracket being interengaged with said aperture of said second bracket, and said tongue of said second bracket being interengaged with said aperture of said first bracket, when the doors are in closed position.
Claim 3
Dependent Claim
104 words
In an apparatus as set forth in claim 1 and wherein the rotary bar door locking mechanism includes an annular collar on the rotary bar, the further improvement comprising: one of said brackets serving as a backing plate for the rotary door closing bar; a mating front guide plate connected with said one bracket and having a generally semicylindrical vertically disposed central portion whereby to accommodate a portion of the rotary door locking bar between said front guide plate and said one bracket; slot means provided in said one bracket for receiving a portion of the annular collar of the rotary door locking bar.
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) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |