摘要:
A shelter includes: a shelter framework including (a) first and second frames, and (b) a plurality of purlin members, each purlin member interposing between the first frame and the second frame; a cover positioned over the shelter framework; a doorcase, secured to and positioned within the first frame, having a central portion, a first side portion and a second side portion, the central portion having an upper section that includes tracks on each side; a center door, extending from a top of the central portion of the doorcase to a bottom of the central portion of the doorcase, having a sliding structure on each side edge; and a first and a second door, each extending from the top of the corresponding side portion of the doorcase to the bottom of the corresponding side portion of the doorcase, the side doors being positioned on opposing sides of the center door, each side door including a track on the side adjacent the center door. When the center door is closed, the sliding structure is positioned within the tracks of the upper portion of the doorcase and the tracks of the side door.
摘要:
A mine door system comprising at least one mine door leaf hinged at one side to a door frame defining an entry. The system includes an articulated door-moving mechanism that articulates between a first configuration in which the mechanism applies a relatively small door-moving force to the door leaf to move it at a first speed and a second configuration in which the mechanism applies a larger door-moving force to the door leaf to move it at a second speed less than the first speed. A related method is also disclosed.
摘要:
A fire door having a hatch disposed in the lowermost outer corner of the same adapted to swing open to provide sufficient space for the passage of fire hose through the door, the hatch being a minor portion of the door whereby the major portion of the door can be kept closed after the placement of hose through the door.
摘要:
A rolling door assembly for selectively covering an opening in a building includes a shutter roller rotatable about a substantially horizontal axis and a flexible panel windable on and off the roller for movement into retracted and extended positions, respectively. The flexible panel defines an upper portion having a first width and a lower portion having a second width less than the first width. At least one pass door frame is hingedly securable proximate a lateral side of the opening for movement between a first position, in which the pass door frame extends in a substantially transverse direction relative to the opening and a second position, in which the pass door frame is substantially aligned with the at least one sidewall. A pass door is movably mounted within the passage defined by the pass door frame to selectively provide ingress and egress therethrough and a closure system is provided for causing the pass door frame to move from the second position to the first position after extension of the flexible panel.
摘要:
A cover assembly controls access to the interior of an electrical enclosure. The electrical enclosure includes a housing having a panel and a plurality of walls extending from the panel to define an opening. The cover assembly includes a door-in-door assembly with first and second hinged doors and a concealed mounting mechanism. The concealed mounting mechanism secures the door-in-door assembly to the housing without requiring a separate securing mechanism. The first hinged door pivots open to access the housing without requiring the first door to be entirely removed. The second hinged door is smaller and thus provides convenient access through a cut-out portion of the larger first door. Access may be further controlled via a locking mechanism for locking the second door in a closed position within the first door.
摘要:
A method and a structure for dividing a door opening such as a conventional garage door opening and allowing for easy installation of both a side mounted swinging door and an overhead type door. A main post is used for both supporting one of the tracks of the overhead door and acting as part of the frame of the swinging door. The post as a specific cross-sectional configuration allowing it to serve its dual purpose. A threshold component is provided for acting both as a threshold for the swinging door and as an anchor for the lower end of the main post. Similarly, a header component is provided for acting both as a header for the swinging door and as an anchor for the upper end of the main post.
摘要:
A shutter with an emergency exit has blocks attached to it. The projection of the blocks from the shutter match the projection of hinges that hold the emergency exit, such that the shutter winds evenly around a drum in a shutter box. The shutter also has reinforced horizontal shutter materials directly above and directly below the emergency exit to keep the shutter horizontally balanced as the shutter is wound into or out of the shutter box. The shutter also includes shock absorbing material where the emergency exit and the shutter meet. The shock absorbing material reduces noise from the contact of the emergency exit and the shutter and also prevents smoke from transferring from one side of the shutter to the other.