High impact resistance door

• US 4,084,347 A
• Filed: 03/25/1976
• Issued: 04/18/1978
• Est. Priority Date: 07/19/1974
• Status: Expired due to Term

• Current Assignee: Di *
• Original Assignee: James W. Brown
• Inventors: Brown, James W.
• Primary Examiner(s): Kannan, Philip C.
• Application Number:
  US05/670,295
• Time in Patent Office: 754 Days
• Field of Search: 49/397, 49/398, 49/366, 49/368, 49/501, 49/503, 49/388, 49/389, 49/34, 49/488, 49/9, 52/405, 52/615, 160/354
• US Class Current: 49/397
• CPC Class Codes: E05D 7/081 the pivot axis of the wing being situated near one edge of the wing, especially at the top and bottom, e.g. trunnions
• CPC Class Codes: E06B 3/86 of plastics without an internal frame, e.g. with exterior panels substantially of plastics
• CPC Class Codes: E06B 7/2309 with a hollow sealing part
• CPC Class Codes: E06B 7/231 with a solid sealing part
• CPC Class Codes: E06B 7/2316 used as a seal between the floor and the wing

Abstract

An improved door suitable for use in industrial plants and other such areas where the door is to be opened and closed by objects or vehicles which strike the side of the door. The door has a hollow body provided with a monolithic construction and is formed from a moldable material which is highly resistant to impact forces exerted thereon. The body is filled with a foamed-in-place insulating material and has reinforcing means at spaced locations therein to maintain the shape of the door. Gasket structure is used at one or more margins of the door, and the door is to be swingably mounted on an adjacent door jamb.

Claims

1. An industrial door adapted for use in environments which require the door to be subjected to impact forces exerted thereon comprising:

a hollow body of a molded plastic material having the characteristic of being relatively highly resistant to an impact force exerted on the body, said body being formed from said material in a single molding process to present a pair of spaced vertical sidewalls, a top wall, a bottom wall and a pair of opposed vertical end walls interconnecting the top and bottom walls, the sidewalls, the top and bottom walls, and the end walls being integral with each other to present a monolithic construction for the body;

a mass of applied-in-place insulating material within said body and bonded to the inner surfaces of said sidewalls and said top, bottom and end walls; and

rod means embedded within said insulating material mass and spaced inwardly from said sidewalls and said end walls for reinforcing said body, there being means adjacent to one end wall for mounting hinge structure on the body, whereby the body can be swingably mounted on a door jamb.

2. A door as set forth in claim 1, wherein certain of the walls have gasket structure thereon, said structure including a gasket for each of said certain walls, each gasket having a bead at one margin thereof and a blade at its opposite margin, and a keyway-forming member on each of said certain walls, respectively, the bead and one margin of each gasket being received within the corresponding member.

3. A door as set forth in claim 1, wherein said rod means includes a pair of spaced rods extending longitudinally of said end walls throughout at least a major part of the height of said body.

4. A door as set forth in claim 3, wherein the rods are solid.

5. A door as set forth in claim 3, wherein said rods are tubular.

6. A door as set forth in claim 3, wherein one of said rods is adjacent to and spaced inwardly from said one end wall, said mounting means being coupled to the opposed ends of said one rod and being anchored thereby.

7. A door as set forth in claim 1, wherein said mounting means includes a pair of rigid members for the top and bottom, respectively, of said body, each member being in the plane of the body and having a shaft projecting outwardly therefrom longitudinally of said one end wall.

8. A door as set forth in claim 7, wherein each member is exterior of the body.

9. A door as set forth in claim 7, wherein each member is embedded in the sidewalls and said one end wall.

10. An industrial door adapted for use in environments which require the door to be subjected to impact forces exerted thereon comprising:

a hollow body of a moldable plastic material having the characteristic of being relatively highly resistant to an impact force exerted on the body, said body being formed from said material in a rotatable molding process to present a pair of spaced vertical, flat sidewalls, a top wall, a bottom wall and a pair of opposed vertical end walls interconnecting the top and bottom walls, the sidewalls, the top and bottom walls, and the end walls being integral with each other to present a monolithic construction for the body;

a mass of insulating material filling the interior of the body and bonded to the inner surfaces of the sidewalls and the top, bottom and end walls to provide thermal insulation for the body; and

a pair of spaced, rigid rods embedded in said insulating material mass in inwardly spaced relationship to the sidewalls and the end walls for reinforcing the body;

means adjacent to one vertical end wall for mounting hinge structure on the body, whereby the body can be swingably mounted on a door jamb; and

a gasket for each of said bottom wall and said vertical end walls, respectively, said body having a keyway-forming member for each gasket, respectively, the keyway-forming members being embedded in the corresponding walls and removably receiving portions of respective gaskets.