Patent Application
20090165415
1. Field of the Invention
The disclosure relates generally to doors, such as an entry door and, more specifically, to a door system strengthened by stiffeners.
2. Description of the Related Art
A common type of door includes a frame to form the periphery of the door, a flat sheet on both the front and back of the door. A gap may exist between the flat sheets, and the gap may remain empty or be filled with an insulator. This type of door, although easy to manufacture, can be both decoratively uninteresting and structurally deficient.
Depending upon the area of the country (e.g., hurricane-prone areas) and the type of door (e.g., an entry door), the door may be required to meet certain standards. For example, hurricane testing involves firing one or more projectiles (e.g., a 2″×4″ piece of wood) at the door and subsequently subjecting the door to simulated wind load cycling. The door is then tested for structural integrity and the ability to continue to keep out rain/wind. A similar type of testing is also performed on a window within the door. Many types of doors (with or without windows) fail to pass this type of testing. There is, therefore, a need for improved door system that provides for greater structural integrity either for the door itself or for a window within the door while at the same time providing a door designer with a greater flexibility for the types of designs/materials used to manufacture the door.
Embodiments of the invention address deficiencies of the art with respect to providing an improved door having a greater structural integrity. In this regard, a door and window system comprising a door, a window, a bracket, and a retainer. The door has a portal, and the window is adapted to fit within the portal. The window having a first face and a second face. The bracket has a first window support, and the retainer has a second window support. The first window support includes a surface upon which the first face of the window is supported, and the second window support includes a surface upon which the second face of the window is supported. The door includes first and second outer skins.
In another aspect of the door and window system, the bracket includes first and second legs, and the first and second legs are respectively attached to the first and second outer skins. The first window support extends in an opposite direction from the legs.
In further aspects of the door and window system, a stiffener is positioned between the first and second outer skins. The spacer is also positioned between the stiffener and one of the first and second outer skins. The spacer has a U-shaped cross-section. First and second spacers are respectively positioned between the stiffener and the first outer skin and between the stiffener and the second outer skin. The spacer attaches the bracket to the stiffener.
In additional aspects of the door and window system, the retainer includes a leg that extends in an opposite direction of the second window support, and the leg is attached to the second outer skin. The retainer includes a flange extending away from the retainer and attached to a distal end of the second window support.
Additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The aspects of the invention will be realized and attained by means of the elements and combinations particularly pointed out in the appended claims. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
The accompanying drawings, which are incorporated in and constitute part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. The embodiments illustrated herein are presently preferred, it being understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown, wherein:
Although shown as an entry door, the door system 100 is not limited in this manner. For example, the door system 100 may be also used with pocket doors, sliding doors, French doors, and garage doors. Additionally, the door system 100 may include one or more windows 110 and/or decorative features 105, such as molding and millwork.
The outer skins 120A, 120B are not limited as to a particular material. Example materials for use as the outer skins 120A, 120B include steel, aluminum, wood, plastic, and composites. In certain aspects of the door system 100, decorative features 105 of the door system may be formed within the outer skins 120A, 120B.
The stiffeners 140A, 140B are also not limited as to a particular material. Example materials for use as the stiffeners 140A, 140B include steel, aluminum, wood, plastic, and composites. However, in certain aspects of the door system 100, the stiffeners 140A, 140B are formed from a structural material, such as steel or aluminum so as to provide the additional structural support and impact/penetration resistance to the door system 100. By using a structural material for the stiffeners 140A, 140B, in certain aspects of the door system 100, the first and second outer skins 120A, 120B may be formed from a different material, yet less structurally-sound material. This different material, however, may have other desirable characteristics, such as improved environmental resistance, workability, and/or decorativeness.
The frame 130 is also not limited as to a particular material. Moreover, the frame 130 may be formed from different materials. For example, a lower portion of the frame 130 may be formed from a more water- and/or decay-resistant material than other portions of the frame 130. Example materials for use as the frame 130 include steel, aluminum, wood, plastic, and composites.
The frame 130 may include an outer shell or the frame 130 can be formed from a solid material. If the frame 130 is formed using an outer shell, the outer shell of the frame 130 may be empty or substantially completely filled with an insulator 150, such as a rigid foam. In certain aspects, certain linear portions of the outer shell of the frame 130 are formed from a single piece of material and joined together along a seam 135.
Although not limited in this manner, the frame 130 may define a complete outer periphery (see
In certain aspects of the door system 100, the first stiffener 140A is connected to the first side of the frame 130, and the second stiffener 140B is connected to the second side of the frame 130. The first and second outer skins 120A, 120B may be respectively connected to the first and second stiffeners 140A, 140B at positions adjacent the frame 130. The first and second stiffeners 140A, 140B may extend substantially along an entire height and width of the door system 100, and in so doing, the first and second stiffeners 140A, 140B are connected to the frame 130 along the complete periphery, as defined by the frame 130 of the door system 100. Also, with the exception of holes for such features as windows and door knobs, the first and second stiffeners 140A, 140B may extend throughout the entire interior, as defined by the frame 130, of the door system 100. In so doing, the first and second stiffeners 140A, 140B may provide a more complete puncture resistance to the door system 100.
Each of the first and second stiffeners 140A, 140B may include first and second portions. The first portions of each of the first and second stiffeners 140A, 140B may directly connect to the first and second sides of the frame 130. Also, the second portions of each of the first and second stiffeners 140A, 140B may be joined together within an area defined by the frame 130. Although not limited in this manner, the first and second portions are respectively within first and second separate planes, and the first and second planes are substantially parallel to and offset from one another.
In certain aspects of the door system 100, the first and second stiffeners 140A, 140B are joined together along a plane approximately equidistant from the first and second outer skins 120A, 120B. Also, a gap exists between the first stiffener 140A and the first outer skin 120B and between the second stiffener 140B and the second outer skin 120B where the first stiffener 140A is joined together with the second stiffener 140B. Thus, the first outer skin 120A and the first stiffener 140A define a first cavity 155A therebetween, and the second outer skin 120B and the second stiffener 140B define a second cavity 155B therebetween.
The door system 100 may also include an insulator 150 positioned between the first and second outer skins 120A, 120B, and in certain aspects, the insulator 150 may substantially completely fill the cavities 155A, 155B within the door system 100. Although many types of insulators 150 are known as being capable of used within a door system 100, in certain aspects of the door system 100, the insulator 150 is a rigid foam.
Referring to
In
Referring to
In
In
Referring to
The retainer 180 may also include a flange 187 extending away from the window 110 and attached to a distal end of the second window support 190B. Through use of the bracket 160 and retainer 180, the window 110 may be positioned and held within the door system 100 in an improved structurally-secure manner.
This application claims the benefit of U.S. patent application Ser. No. 61/018,177, filed on Dec. 31, 2007, which is incorporated herein in its entirety.
| Number | Date | Country | |
|---|---|---|---|
| 61018177 | Dec 2007 | US |
