|Publication number||US3832805 A|
|Publication date||Sep 3, 1974|
|Filing date||Oct 12, 1972|
|Priority date||Oct 12, 1972|
|Publication number||US 3832805 A, US 3832805A, US-A-3832805, US3832805 A, US3832805A|
|Original Assignee||Stevens W|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (4), Referenced by (16), Classifications (6)|
|External Links: USPTO, USPTO Assignment, Espacenet|
United States Patent 1 [111 3,832,805
Stevens Sept. 3, 1974  PREFABRICATED OUTSIDE STEEL DOORS 728,984 4/1955 Great Britain 49/503 I e o Weldon S 1420 Park Ave. 735,207 6/1966 Canada 59/503 N.E., Salem, Oreg. 97303 Primary ExaminerKenneth Downey  Flled' 1972 Attorney, Agent, or Firm.lames D. Givnan  Appl. No.: 296,860
 US. Cl 49/503, 49/56, 49/67  ABSTRACT [5 1] Int. Cl E06b 3/00  Field of Search 49/503, 61, 63, 65, 67, A protective prefabricated outside metal door 1 49/56 hingedly mountedwithin its own frame or casing as a unitary assembly. The assembly is adapted for opera-  References Cited tive mounting on the face of or within a permanently UNITED STATES PATENTS framed opening in the wall of the building. The frame 2,711,565 6/1955 Levin 49/56 x of the l may be metal wood or other able material. FOREIGN PATENTS OR APPLICATIONS 257,564 5/1963 Australia 49/503 1 Claim, 5 Drawing Figures l l J l PREFABRICATED OUTSIDE STEEL DOORS This invention relates generally to a door and door frame assembly and more particularly to a prefabricated steel door hung within its own frame and thus adapted for protective use when operatively installed or hung in the conventional permanently installed frame of an entrance doorway to a building.
The principal objects of the invention are:
To provide an outside door of the character described which is of simple, efficient, durable, inexpensive solid construction made by simple metal cutting and welding operations and of a size to substantially occupythe opening defined by the conventional door frame of a building.
To include as structural elements of the assembly, welded components of the door itself,a metal door frame, a housing for a locking mechanism inaccessible from either the outside or inside of the door except for two aligned openings for the insertion or withdrawal of a key or other lock actuating mechanism.
The foregoing and other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawing forming a part hereof, and in which:
FIG. 1 is an elevational view of a prefabricated door made in accordance with my invention and as viewed from the exterior of a building or doorway.
FIG. 2 is an elevational view of the right side of FIG. 1 with a conventional door and fragments of a door frame shown in broken lines.
FIG. 3 is a bottom end view of FIG. 1.
FIGS. 4 and 5 are sectional views on an enlarged scale taken respectively along the lines 4-4 and 55 of l.
With continuing reference to the drawing wherein like reference numerals indicate like parts, numeral 1 indicates generally a metal door frame comprising side members 2 and 3, respectively, open at their bottom ends, as shown, and permanently interconnected at their top ends by cross member 4. These door frame members are preferably, though not restrietively of angle section as shown in FIG. 3 and are permanently installed and secured within a conventional entrance doorway of an outside building wall W.
The prefabricated steel door made in accordance with my invention comprises side members 6 and 7, a top cross member 8 and bottom cross member 9.
The top and bottom door frame members 8 and 9 are interconnected by vertically disposed laterally spaced apart steel bars 10 permanently secured by welding or the like to the top and bottom cross members 8 and 9. These vertical bars 10 are interconnected at or near their center section by two vertically spaced apart transverse bars 12 and 13 welded at their ends to the side door frame members 6 and 7 and intermediate their ends to the vertical bars 10 on the inside thereof.
12. The front wall 15 of the lock housing is also welded along one of its sides to the adjacent vertical member 10. The opposite ends of both sides of the front and rear walls 15-16 are welded as at 22, 23 to the door frame member 7.
The wall members 15-16 of the lock housing are provided with aligned openings 25 and 26, through either of which a key (not shown) may be inserted for operative engagement with a locking mechanism (not shown) disposed within the lock housing. The downwardly extending portion of the rear wall of the lock housing and the rearwardly bent bottom end 19 thereof which is welded to the transverse bar 13 renders the door handles of an inside door 42 inaccessible from the exterior of the door 1.
With particular reference to FIGS. 1 and 3, it will be seen that the door 1 being hinged, as at 1A, to the side member 2 of the door frame comprises a unitary assembly mounted by the frame within and secured to the sides and top of an existing standard doorway casing through the wall W of a building.
As best illustrated in FIG. 5 the walls 15 and 16 at the open end of the lock housing are internally shouldered as at 32 to facilitate installation and mounting of a locking mechanism (not shown) within the housing. The interior of the lock housing has a conventional locking bolt (not shown) normally in alignment with an opening 34 in the flange 36 of door frame member 7 and with an opening in the flange 37 of the door frame 3.
From the foregoing and as illustrated in full lines in FIG. 5 it will be readily apparent that the flange 40 of the door frame member 7 will provide an abutment or limit stop for closing the door and insure alignment of the locking bolt openings 34 and 35.
It will also be apparent that the inaccessible disposition of a locking bolt within or extending into the aligned locking bolt openings will render the bolt foolproof and inoperable by attempted insertion of a thin plate of steel, a stiff card of celluloid, or the like.
The ornamental iron work (FIG. 1) shown between and secured by spot welding or other suitable means, to the laterally spaced apart rods 10 and to the transverse bars 12 and 13 are primarily intended for decorative or ornamental purposes. However they do serve as obstacles which would prevent or at least interfere with unwanted passage of pet animals from entering a room when the standard door indicated at 42 in FIG. 2 is left open and the door 1 is closed.
What I claim is:
l. A prefabricated steel door in combination with a door frame installed in a door casing permanently mounted within a doorway opening through a building wall,
said door frame comprising vertically disposed parallel side frame members interconnected at their top end by a cross member, all of said frame members being of angle section said steel door comprising vertically disposed side members, top and bottom cross members and vertically disposed laterally spaced apart bars, said side members of the door being of angle section matching the angle section of said parallel side members of said door frame said steel door side members and said vertically spaced apart bars permanently secured to said top and bottom cross members of said steel door,
whereby a lock mechanism within said lock housing is rendered inaccessible and inoperable and whereby said downwardly extended front wall and the rearwardly bent bottom end thereof renders a door and its handle disposed rearwardly of said steel door inaccessible.
means secured to said one of said side door frame members and overlapping an adjacent portion of said lock housing to seal the space between said door frame member and the adjacent wall of said lock housing against insertion of lock-actuating means through said space.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2711565 *||Mar 12, 1952||Jun 28, 1955||Samuel Levin||Window guard|
|AU257564A *||Title not available|
|CA735207A *||May 31, 1966||Anger Wilhelm||Door structures|
|GB728984A *||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4026070 *||Mar 31, 1975||May 31, 1977||Hicks Harry H||Adjustable door|
|US4094099 *||Jan 14, 1977||Jun 13, 1978||Birch Alexander A||Screen door assembly|
|US4372081 *||May 18, 1981||Feb 8, 1983||Joseph Forgione||Heat releasable window guard|
|US4409757 *||Jul 29, 1981||Oct 18, 1983||John Daugherty||Security latch assembly|
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|US8794683 *||Jan 31, 2011||Aug 5, 2014||David R. Wysong||Slide access and latch engagement for a door|
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|CN103132888A *||Jun 8, 2012||Jun 5, 2013||周杨||Structure and manufacturing method of aluminum alloy shielding window|
|CN103132888B *||Jun 8, 2012||Jan 20, 2016||周杨||一种铝合金防护窗的结构及制作方法|
|U.S. Classification||49/503, 49/67, 49/56|