Abstract: A hatch useful for forming a portal to a sub-surface facility has a cover plate with a plurality of fasteners around its perimeter. These fasteners apply an adjustable compressive force on the cover plate. A compressible material is affixed to the cover plate inward from the perimeter adjacent to the fasteners. A first vertical portion of a rectangular channel has a first end penetrating the compressive material to form a water barrier with the penetration distance being determined by the compressive force. A mechanical stop determines a maximum penetration depth.

Abstract: Cellar or bulk head doors having sidewalls are provided which are made of a polymer and which are strong, durable, attractive, virtually maintenance free, easily assembled, have connection and anchorage points which allow the door assembly to be used over a wide temperature range without damage to the polymer parts making up the assembly and which has an opening preferably in one or both of the sidewalls for inserts such as a window, louver, screen or blank and which insert may be easily changed without tools for the purpose of providing light, ventilation, or security. The doors also may be extended from the structure being enclosed using opposed vertical extenders mated with a horizontal extender.

Abstract: A roof scuttle safety railing system is provided for an existing or new roof scuttle which railing may be installed on the roof scuttle by unskilled labor without compromising the integrity of the weather seal of the roof scuttle. In one embodiment, pivotal corner brackets are secured to the capflashing of a roof scuttle with the vertical members of the safety railing being inserted in openings in the brackets. In another embodiment, an elongated bracket is used along two opposed sides of the roof scuttle which brackets are firmly held against the outside walls of the roof scuttle by tie rods, a strap or a cable. The elongated bracket has vertical openings at its distal ends for securing the vertical members of the safety railing and horizontal openings or slots for the tie rods, straps or cables. A hinged gate is also provided which preferably has a self-closing hinge.

Abstract: A horizontal door assembly is provided using a gas spring as a lifting mechanism for the door leaf. A special bracket having a number of pivot pin openings is employed to rotatably couple the gas spring to the door frame, whereby different lifting forces can be applied to the door by the user of the door by adjusting the position of the gas spring in the bracket. A brace is also provided to support the bracket and gas spring to enhance operation of the door. A resilient material such as EPDM is used to decelerate movement of the door leaf to the open position and provide a stable door leaf when in the open position. Sections of the door assembly are provided with screw studs to facilitate on-site construction and packaging and shipping of the door assembly.

Abstract: A roof scuttle safety railing system is provided for an existing or new roof scuttle which railing may be installed on the roof scuttle by unskilled labor without compromising the integrity of the weather seal of the roof scuttle. In one embodiment, pivotal corner brackets are secured to the capflashing of a roof scuttle with the vertical members of the safety railing being inserted in openings in the brackets. In another embodiment, an elongated bracket is used along two opposed sides of the roof scuttle which brackets are firmly held against the outside walls of the roof scuttle by tie rods, a strap or a cable. The elongated bracket has vertical openings at its distal ends for securing the vertical members of the safety railing and horizontal openings or slots for the tie rods, straps or cables. A hinged gate is also provided which preferably has a self-closing hinge.

Abstract: Horizontal hinged door assemblies such as sidewalk doors comprising a door, a frame surrounding the door and a hinge connecting the door to the frame are improved by utilizing a bendable gasket having a leg portion which is preferably inserted into an opening in at least one of the frame walls to secure the gasket to the frame and an outwardly and preferably downwardly extending body portion which extends across a gap between the frame and the edge of the door when closed and which is contacted by the door and bent further downward when the door is closed. The bendable gasket may be inserted into and secured to the frame during fabrication of the door assembly or on-site during installation of the door assembly. A variety of elongated shaped bendable gaskets may be used depending on the type door assembly installation.

Abstract: Horizontal hinged door assemblies such as sidewalk doors comprising a door, a frame surrounding the door and a hinge connecting the door to the frame are improved by utilizing an anchor device which is inserted into an opening in at least one of the frame walls forming an outwardly extending flange for securing the door assembly to the structure forming the opening to be covered. The anchor device may be inserted into the frame during fabrication of the door assembly or on-site during installation of the door assembly. A variety of elongated shaped anchor devices may be used depending on the type door assembly installation. The anchor devices are preferably bendable to conform the anchor device to the site to which the door is being secured.