Abstract: A patch fitting cover or cap for a patch fitting creates a substantially continuous surface toward a glass door pane using an inclined wall of the cover/cap. The patch fitting cover may be attached to a patch fitting to improve the accessibility of an associated glass door. The cover may be constructed as a retrofit cover to replace an existing patch fitting cover. The cap may be constructed to cooperate with an existing patch fitting cover such that the cap is installed on the existing patch fitting cover.

Abstract: An end load arm for a glass door rail couples the glass door rail to mounting hardware. The end load arm may allow a glass door to be installed at an angle which does not block the doorway during installation. The end load arm may be suitable for use in low-profile glass door rails.

Abstract: In one embodiment, a plastic door rail wedge for clamping a door panel to a door rail includes an elongate monolithic body. An inward face of the elongate monolithic body defines a clamping surface that configured to directly engages a side surface of the door panel. An upward end face of the elongate monolithic body defines a supporting surface that is configured to directly engage an end surface of the door panel. An outward face of the elongate monolithic body defines a camming surface that is angled with respect to the clamping surface. The door rail includes a frame with an opening and a bracket disposed within the opening of the frame. The bracket is configured to cam the first and second monolithic plastic door rail wedges toward each other to cause the monolithic plastic door rail wedges to clamp directly against the door panel.

Abstract: An end load arm for a glass door rail couples the glass door rail to mounting hardware. The end load arm may allow a glass door to be installed at an angle which does not block the doorway during installation. The end load arm may be suitable for use in low-profile glass door rails.

Abstract: A patch fitting cover or cap for a patch fitting creates a substantially continuous surface toward a glass door pane using an inclined wall of the cover/cap. The patch fitting cover may be attached to a patch fitting to improve the accessibility of an associated glass door. The cover may be constructed as a retrofit cover to replace an existing patch fitting cover. The cap may be constructed to cooperate with an existing patch fitting cover such that the cap is installed on the existing patch fitting cover.

Abstract: A change over station (COS) for persons in a hazardous environment includes a steel housing having only a single entrance door, a chamber, and an air lock portion. The COS includes a first elongate seat disposed in the chamber and a plurality of compressed air cylinders disposed in the seat. The COS includes plumbing connected to the air cylinders formed of gas lines and valves and an exhaust muffler including first, second and third air paths that provide air into the chamber. The third air path is door activated when the door is opened by a door activated switch. The COS includes a storage portion disposed in the housing having supplies, including water and SCSRs or SCBAs. A method for providing a protected environment to miners from a mine environment in a mine.