Patent US4103458A successfully refreshed from Google Patents.
US4103458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Securing of doorways
Assignee: PLAN PARTITIONS Ltd
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Filing: 1976-12-14
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Granted: 1978-08-01
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Expires: 1996-12-14
Abstract
Abstract A conventional doorway, of the kind capable of opening in one direction only, is adapted to resist forceful entry by a caller, even after initial opening of the door by an occupant, due to the presence of a generally rectangular and at least partially translucent closure member which is secured to either the door or the door frame, is movable towards and away from an operative position in which it engages respectively either the door frame or the door, and includes means allowing it to be releasably secured in said operative position to prevent opening of the door through more than a predetermined angle, the closure member then bridging the gap which would otherwise have appeared between the door and the door frame so that entry through the doorway by the caller is denied until said means securing the closure member has been released by the occupant.
Inventors
- 👤 Ernest R. Booker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:27
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/28; E06B5/00; E06B5/10; E06B5/11; E06B9/00; E06B9/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
299 words
A doorway comprising a generally rectangular door which is pivotally carried by a door frame in a manner allowing movement of the door over an adjacent floor in one direction only out of the plane of the door frame, the door and the floor and the door frame thus constituting respective elements of a conventional doorway, and the present improvement residing in adapting such a conventional doorway to resist forceful entry by a caller, even after initial opening of the door by an occupant, by providing a non-collapsible canopy extending outwardly from the door frame above the door in combination with a generally rectangular closure member formed as a non-collapsible imperforate bullet-resistant member which extends from the floor to the canopy and which includes at least one translucent portion of a bullet-resistant material, the entire length of one vertical edge of the closure member being pivotally hinged to the door frame with the entire length of the other vertical edge of the closure member including a flange extending perpendicular to the main portion of the closure member to form therewith an L-section, both upper and lower portions of the closure member carrying respective bolts which are movable into and out of respective sockets set in said canopy and said floor to secure and release the closure member from an operative stationary position, in which the closure member lies at a predetermined position with the flange lying in the path of movement of the door to prevent subsequent opening of the door through more than a predetermined angle, the closure member and the canopy then bridging the gaps which would otherwise have appeared between the door and the door frame so that entry through the doorway by the caller is denied until said bolts have been released by the occupant.
Claim 2
Dependent Claim
299 words
A doorway comprising a generally rectangular door which is pivotally carried by a door frame in a manner allowing movement of the door over an adjacent floor in one direction only out of the plane of the door frame, the door and the floor and the door frame thus constituting respective elements of a conventional doorway, and the present improvement residing in adapting such a conventional doorway to resist forceful entry by a caller, even after initial opening of the door by an occupant, by providing a non-collapsible canopy extending outwardly from the door frame above the door in combination with a generally rectangular closure member formed as a non-collapsible imperforate bullet-resistant member which extends from the floor to the canopy and which includes at least one translucent portion of a bullet-resistant material, the entire length of one vertical edge of the closure member being pivotally hinged to the door frame with the entire length of the other vertical edge of the closure member including a flange extending perpendicular to the main portion of the closure member to form therewith an L-section, both upper and lower portions of the closure member carrying respective bolts which are movable into and out of respective sockets set in said canopy and said floor to secure and release the closure member from an operative stationary position, in which the closure member lies at a predetermined position with the flange lying in the path of movement of the door to prevent subsequent opening of the door through more than a predetermined angle, the closure member and the canopy then bridging the gaps which would otherwise have appeared between the door and the door frame so that entry through the doorway by the caller is denied until said bolts have been released by the occupant.
Claim 3
Dependent Claim
39 words
A doorway according to claim 1, wherein the closure member is formed of lengths of opaque bullet-resistant material connected together and leaving at least one portion containing a window of translucent material forming said at least one translucent portion.
Claim 4
Dependent Claim
20 words
A doorway according to claim 2, said flange being constituted by one of said lengths, which length is of L-cross-section.
Claim 5
Dependent Claim
20 words
A doorway according to claim 1 both bolts being simultaneously activated in response to operation of a single central control.
Claim 6
Dependent Claim
46 words
A doorway according to claim 1 in which the uppermost edge of the closure member carries an upstanding L-shaped hood which, together with said uppermost edge, defines a channel-shaped recess for receiving a part of the canopy when the closure member is in its operative position.
Claim 7
Dependent Claim
39 words
A doorway according to claim 5 in which the hood and canopy are formed with respective series of longitudinally-spaced spigots and bores therefor which cooperate with one another to strengthen the doorway during attempts to force an entry therethrough.
Claim 8
Dependent Claim
40 words
A doorway according to claim 1 in which the flange and the door are formed with respective series of longitudinally-spaced spigots and bores therefor which cooperate with one another to strengthen the doorway during attempts to force an entry therethrough.
Claim 9
Dependent Claim
44 words
A doorway according to claim 1 in which said closure member is formed from lengths of extruded aluminium section which have been secured to one another, and a substantial part of the width of a lower portion of the closure member includes a kickboard.
Claim 10
Dependent Claim
27 words
A doorway according to claim 1 in which the closure member is curved to a radius equal to that swept out by the door upon opening thereof.
Claim 11
Dependent Claim
308 words
A doorway comprising a generally rectangular door which is pivotally carried by a door frame in a manner allowing movement of the door in one direction only out of the plane of the door frame, the door and the door frame thus constituting respective elements of a conventional doorway, and the present improvement residing in adapting such a conventional doorway to resist forceful entry by a caller, even after initial opening of the door by an occupant, by providing a generally rectangular closure member formed as a frame from lengths of extruded aluminium section which have been secured to one another to support a pair of windows formed of a transparent bullet-resistant laminated glass, the entire length of one vertical edge of the frame being hinged to an L-shaped bracket fixed to a door post forming part of said door frame, with the entire length of the other vertical edge of the frame including a flange constituted by one of said lengths of aluminium which has been extruded to L-section, the entire width of the uppermost edge of the frame carrying an upstanding L-shaped extruded aluminium hood, and a substantial part of the width of a lower portion of the frame including a kickboard formed of wood, both upper and lower portions of the closure member carrying respective bolts which are simultaneously movable in response to operation of a single central control to either release or secure the closure member in an operative position, in which the flange lies in the path of movement of the door to prevent opening of the door through more than a predetermined angle, the closure member then bridging the gap which would otherwise have appeared between the door and the door frame so that entry through the doorway by the caller is denied until said bolts have been released by the occupant.
Claim 12
Dependent Claim
308 words
A doorway comprising a generally rectangular door which is pivotally carried by a door frame in a manner allowing movement of the door in one direction only out of the plane of the door frame, the door and the door frame thus constituting respective elements of a conventional doorway, and the present improvement residing in adapting such a conventional doorway to resist forceful entry by a caller, even after initial opening of the door by an occupant, by providing a generally rectangular closure member formed as a frame from lengths of extruded aluminium section which have been secured to one another to support a pair of windows formed of a transparent bullet-resistant laminated glass, the entire length of one vertical edge of the frame being hinged to an L-shaped bracket fixed to a door post forming part of said door frame, with the entire length of the other vertical edge of the frame including a flange constituted by one of said lengths of aluminium which has been extruded to L-section, the entire width of the uppermost edge of the frame carrying an upstanding L-shaped extruded aluminium hood, and a substantial part of the width of a lower portion of the frame including a kickboard formed of wood, both upper and lower portions of the closure member carrying respective bolts which are simultaneously movable in response to operation of a single central control to either release or secure the closure member in an operative position, in which the flange lies in the path of movement of the door to prevent opening of the door through more than a predetermined angle, the closure member then bridging the gap which would otherwise have appeared between the door and the door frame so that entry through the doorway by the caller is denied until said bolts have been released by the occupant.
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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) | 1981-07-31 | 1982-01-30 | 1982-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-31 | 1986-01-30 | 1986-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-31 | 1990-01-30 | 1990-08-01 | $7700.00 | Window Closed / Lapsed |