US4468886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall mountable safety hatch
Assignee: Individual
•
Filing: 1983-06-29
•
Granted: 1984-09-04
•
Expires: 2003-06-29
Abstract
Abstract A wall mountable safety hatch comprising a pair of telescopically engagable door frames that insert through a conventional studded wall forming an emergency exit. A pair of flush mounted doors insert into the wall mounted frame and are held in proper alignment by a seat belt type fastener. Upon releasing the conventional seat belt clasp, the door falls from the frame exposing the emergency escape hatchway.
Inventors
- 👤 George A. Tew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:29
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/10; E05B65/1033
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
318 words
A wall mountable safety hatch comprising: (a) a first wall mountable frame comprising a first closed-loop flange member adapted to mount against an inner wall and surround an opening in the wall through which a human can escape, a first door engaging means attached to the interior perimeter of said first flange member, and a first closed-loop sidewall member having one end attached to said first door engaging means, thus extending away from said flange member and substantially through the opening in the wall; (b) a second wall mountable frame comprising a second closed-loop flange member adapted to mount against an exterior wall and surround an opening in the wall through which a human can escape, a second door engaging means attached to the interior perimeter of said second flange member, and a second closed-loop sidewall member having one end attached to said second door engaging means thus extending away from said flange member and substantially through the opening in the wall; (c) an outer door means comprising an exterior wall member and first strap member with connector at one end of said first strap member and the other end of said first strap member attached to the inside surface of said exterior wall member; and (d) an inner door means comprising an interior wall member having an opening to allow said connector and first strap member to thread therethrough, and further comprising a second strap member with a clasp at one end of said second strap member and the other end of said second strap member attached to the inside surface of said interior wall member such that said clasp will reversibly engage to said connector and apply sufficient tension to said strap to hold said outer and inner door means against said first and second door engaging means when said clasp and connector are engaged and release said doors when the clasp and connector are disengaged.
Claim 2
Dependent Claim
318 words
A wall mountable safety hatch comprising: (a) a first wall mountable frame comprising a first closed-loop flange member adapted to mount against an inner wall and surround an opening in the wall through which a human can escape, a first door engaging means attached to the interior perimeter of said first flange member, and a first closed-loop sidewall member having one end attached to said first door engaging means, thus extending away from said flange member and substantially through the opening in the wall; (b) a second wall mountable frame comprising a second closed-loop flange member adapted to mount against an exterior wall and surround an opening in the wall through which a human can escape, a second door engaging means attached to the interior perimeter of said second flange member, and a second closed-loop sidewall member having one end attached to said second door engaging means thus extending away from said flange member and substantially through the opening in the wall; (c) an outer door means comprising an exterior wall member and first strap member with connector at one end of said first strap member and the other end of said first strap member attached to the inside surface of said exterior wall member; and (d) an inner door means comprising an interior wall member having an opening to allow said connector and first strap member to thread therethrough, and further comprising a second strap member with a clasp at one end of said second strap member and the other end of said second strap member attached to the inside surface of said interior wall member such that said clasp will reversibly engage to said connector and apply sufficient tension to said strap to hold said outer and inner door means against said first and second door engaging means when said clasp and connector are engaged and release said doors when the clasp and connector are disengaged.
Claim 3
Dependent Claim
26 words
A wall mountable safety hatch of claim 1 wherein said first and second wall mountable frames are rectangular and adapted to fit between standard wall studs.
Claim 4
Dependent Claim
36 words
A wall mountable safety hatch of claim 2 wherein said first and second door engaging means are right angle recessed grooves that accept and hold said first and second door means essentially flush to the wall.
Claim 5
Dependent Claim
34 words
A wall mountable safety hatch of claim 2 wherein said first and second door engaging means are beveled to insure said doors fall out of said frame when said clasp and connector are disengaged.
Claim 6
Dependent Claim
35 words
A wall mountable safety hatch of claim 2 wherein the perimeter of said first and second doors are beveled to insure said doors fall out of said frames when said clasp and connector are disengaged.
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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) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |