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Publication numberUS3121264 A
Publication typeGrant
Publication dateFeb 18, 1964
Filing dateDec 4, 1961
Priority dateDec 4, 1961
Publication numberUS 3121264 A, US 3121264A, US-A-3121264, US3121264 A, US3121264A
InventorsHammar Herbert G
Original AssigneeNew Moon Homes Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Door
US 3121264 A
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Description  (OCR text may contain errors)

Feb. 18, 1964 H. G. HAMMAR nooR Filed Dec. 4, 1961 I I/ Il I United States Patent O 3,121,264 DOOR Herbert G. Hammar, Dallas, Tex., assigner to New Moon Homes, inc., a corporation of Michigan Filed Bec. 4, 1961, Ser. No. 156,704 3 Ciaims. (Cl. Et-35) 'Ihis invention relates generally to a door, and, more particularly, it relates to an improved door adapted for use in a mobile home or house trailer.

Many types of door construction are, of course, well known, and mobile homes have included various forms of construction for the doors of mobile home coaches. Some doors have been fabricated with metal interior and exterior faces disposed upon a supporting framework of wood. Other doors have been of an all metal construction with a metal supporting framework. Generally, it can be said that the interior face of the door is usually the same as the interior of the home, so that if there is a wood interior, the door interior face will desirably be wood.

It is desirable to have metal exterior facings and plywood paneling for interior facings in the doors for various coaches. Aluminum extrusions have been used in such doors to provide a framework for the doors. Because fastenings have been required to secure interior wood paneling to these aluminum extrusions, a molding is usually employed to conceal the fastenings to provide an unmarred appearance of the door. rIhe molding is not always desirable on the interior face of the door.

An object of the invention is to provide an improved door having a metal exterior face and a wood or plastic interior face. Another object of the invention is the provision of a mobile home door having a metal face and a wood face without visible indications of the fastenings. A further object of the invention is to provide a door of the indicated construction which is inexpensive and pleasing in appearance.

Other objects and advantages of the invention will be apparent from the following description thereof when considered in conjunction with the accompanying drawings, wherein:

FIGURE l is a perspective view of the door of the invention;

FIGURE 2 is a fragmentary view, partially broken away, of an exterior door embodying the features of the invention;

FIGURE 3 is a fragmentary, plan view, also partially broken away, of the door illustrated in FIGURE 1; and

FIGURE 4 is a fragmentary, plan view, partially broken away, of a door of an alternate construction.

As shown in the drawings, a preferred embodiment of the present invention, a lip type door, includes an exterior metal facing panel or sheet 5 which may be prenished, and an interior plywood facing panel 7. These panels 5 and 7 are attached to and supported by a framework comprising a vertically extending end member 9, such as an aluminum extrusion, and two vertical wood studs 11, 13 which reinforce the door. On the lip edge of the door the metal exterior sheet 5 is attached to the end member 9 by hemming and the wood stud 11 is fastened to the end member 9. On the hinged edge of the door, the sheet 5, is bent so as to provide a door edge and a holding surface to which the Wood stud 13 can be directly fastened. The interior facing panel 7 is then securely glued to the wood studs 11, 13. Thus, the invention obviates the need for any outer visible fastenings and provides for over-all interior plywood paneling in a mobile home, without a concealing molding.

More particularly, as illustrated, the structure of the invention comprises an exterior metal panel or sheet 5 of a material, such as aluminum, usually that of which ice.

the remainder of the mobile home is constructed. The sheet 5 has an outer, finished face 14.

In order to provide a lip for the door in the preferred embodiment, an end member 9 is used to form one edge of the door. The end member 9, preferably an aluminum extrusion, has a main portion similar in shape to an angle iron with one leg 15 longer than the other leg 17. Projecting outwardly from and generally normal to the outer Wall of the leg 15 is a flange 19. The sheet 5 is bonded to the end member 9 by hemming, i.e., folding its edge over the shorter leg 17 of the end member 9, as shown in FIGURE 2.

At its opposite or hinged end, the sheet 5 itself is bent to form the door edge. As viewed from the top, FIG- URE 3, the sheet is bent degrees to the right to form an edge 21 to which hinges 22 are attached. It is then turned inwardly upon itself to form an element 23 against which the plywood sheet 7 is seated. Lastly it is turned outwardly 90 degrees so as to form the flange 25 which is substantially parallel to the outer face 14 of the metal sheet 5.

To facilitate the attachment of the studs 11, 13, notches or slots 26 are cut in one surface of them to accommodate the fianges 19, 25 as shown in FIGURE 3. Flush-type fasteners 27 are projected through the anges 19, 25 into the studs 11, 13 in order to secure the studs 11, 13 to the door framework. If an aluminum extrusion is used which has a reasonably thin flange 19, a heavy wire staple may be used as a fastener 27. If desired, the connection between the stud 11 and the metal framework member 9 can be strengthen by providing small apertures in the longer leg 15 to allow the use of fasteners, such as nails 29, in a direction generally perpendicular to the staples 27. These fasteners would not particular detract from the appearance of the door.

When the studs 11, 13 have been attached by the fasteners 27, the remainder of the surface which was not affected by the notch serves as a base for glue or adhesive 31 by which the plywood sheet 7 is to be attached. The longer leg 15 of the end member 9 cooperates with the element 23 to form edge walls for the interior plywood panel '7. Once the panel 7 has been seated, the woodto-wood bond of the glue line 31 rmly holds it in the door, thus covering the flush fasteners 27. In addition, the use of the glue line 31 saves labor over the installation of a number of independent uniformly spaced-apart fasteners. The top and bottom of the door may be closed in any conventional manner.

In the assembled door, the exterior metal sheet 5 and the interior plywood panel 7 dene an enclosure bounded on the sides by the wooden studs 11, 13. This enclosure serves to hold a sheet of insulation 33 which aids in the over-all insulation of the mobile home.

If a flush-fitting door is desired rather than the lip-type door shown, both edges of the door can be made in the style of the hinged edge shown. Such a construction will alleviate the need for the end member 9.

An alternate door construction is shown in FIGURE 4, wherein like numbers are used to identify corresponding pairs but are differentiated by the use of the symbol prime In the structure shown in FIGURE 4, the fiange 19 of the member 9' is centered along the longer leg 15. Likewise the element 23 is lengthened in the fashioning of the sheet so that the ange 25is disposed closer to the face 14 of the sheet 5. Accordingly, the notches or slots 26 are cut in positions toward the center of the wooden studs 11', 13 leaving one entire surface of the studs 11', 13 to serve as a base for adhesive 31.

Various reatures of the invention which are believed to be new are set forth in the accompanying claims.

What is claimed is:

1. A unitary door structure having no visible fasteners which comprises (a) a supporting stud, (b) a metal sheet having a-face section forming the outside surface of the door, (c) an edge Wall element connected to said face section having an edge portion forming one end of the door and having a flange projecting from said edge portion toward the other end of the door, said ange being generally parallel to and spaced apart from said face section, (d) fastening means extending through said flange into said stud so as to interlock said supporting stud and said edge Wall element, (e) a non-metallic panel forming the inside surface of the door and being disposed adjacent said stud so as to conceal said fastening means, (f) said edge portion extending beyond said stud so as to provide an enclosure for concealing the edge of said non-metallic panel, and (g) means adhesively connecting said nonmetallic panel to said stud.

2. A unitary Vdoor structure having no visible fasteners which comprises (a) a supporting stud having a ylongitudinally extending slot formed in an outer face of said stud intermediate the width of said face, (b) a metal sheet having a face section forming the outside surface of the door, (c) an edge wall element connected to said face section having an edge portion forming one end of the door and having a ange 'projecting from said edge portion toward the other end of the door, said flange being generally parallel to and spaced apart a predetermined distance from said face section and proportioned so as to be accommodated in said siot, (d) fastening means extending through said flange into said stud so as to interlock said supporting stud and said edge wall element, (e) a non-metallic panel forming the inside surface of the door and being disposed adjacent said stud so as to conceal said fastening means, (f) said edge portion extending beyond said stud so as to provide an enclosure for concealing the edge of said non-metallic panel, and g) means adhesively connecting said non-metallic panel to said stud. e

3. A unitary door structure having no visible fasteners which comprises (a) a supporting stud of generally rectangular cross section being cut away at one corner to provide a longitudinally extending recess, (b) a metal sheet having a face section forming the outside surface of the door, (c) an edge wall element connected to said face section having an edge portion forming one end of the door and having a flange projecting from said edge portion toward the other end of the door, said flange being generally parallel to and spaced apart a predetermined distance from said face section so as to be accommodated in said corner recess in said stud, (d) fastening means extending through said flange into said stud so as to interlock said supporting stud and said edge Wall element, (e) a non-metallic panel forming the inside surface of the door and being disposed adjacent said stud so as to conceal said fastening means, (f) said edge portion extending beyond said stud so as to cooperate with said flange in providing a seat for the edge of said non-metallic panel, and (g) means adhesively connecting said nonmetallic panel to said stud.

References Cited in the file of this patent UNITED STATES PATENTS 2,833,004 Johnson et al. May 6, 1958 2,864,132 Clements Dec. 16, 1958 FOREIGN PATENTS 205,701 Austria Oct. 10, 1959 842,939 Great Britain July 27, 1960

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2833004 *Jun 13, 1956May 6, 1958Kawneer CoDoor
US2864132 *Apr 16, 1953Dec 16, 1958Macmillan ClementsPanel construction
AT205701B * Title not available
GB842939A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3364645 *Feb 18, 1965Jan 23, 1968Alliancewall CorpDoor construction
US3394513 *Mar 14, 1966Jul 30, 1968Winnebago Ind IncSandwich panel attachment reinforcement
US3406491 *Jun 20, 1966Oct 22, 1968Metal Sections LtdPanelling arrangements
US4107891 *Jul 8, 1977Aug 22, 1978Industrial Air, Inc.Modular building panel with heat nonconducting means
US6138435 *Aug 22, 1996Oct 31, 2000Alusuisse Airex AgProfile sections for plate-like composite elements
US6389769 *Jul 5, 2000May 21, 2002Efp CorporationDoor and method of making same
US7210274Mar 28, 2003May 1, 2007Mark BallantyneDoor stile structure
US7228667 *Dec 19, 2003Jun 12, 2007Tuff Shed, Inc.Door system for a building
US7462657 *May 1, 2007Dec 9, 2008Tuff Shed, Inc.Door system for a building
US7934354 *Jul 15, 2008May 3, 2011Caterpillar S.A.R.L.Door panel
US8341920 *Aug 1, 2008Jan 1, 2013Everlast Doors Industries, SaMetal door
US8596022Dec 6, 2012Dec 3, 2013Everlast Doors Industries, SaMetal door
US20120104909 *Sep 8, 2009May 3, 2012Ergin KaplanHousehold Appliance
Classifications
U.S. Classification52/784.15, 52/376, 52/802.1, 49/501
International ClassificationE06B3/82
Cooperative ClassificationE06B3/825
European ClassificationE06B3/82B2