MINE VENTILATION DOOR WITH WINGS AND SLIDABLE OR POCKET PERSONNEL DOOR

摘要

A personnel access door assembly of an opposing wing of a mine ventilation door. The personnel access door includes a frame including a top portion, a bottom portion, a first post portion and a second post portion, the top frame portion and the bottom frame portion coupled to respective top and bottom ends of the first post and second post portions. The personnel access door further includes sets of trolley wheels affixed to the top or bottom of the frame to engage a top rail or bottom rail affixed on the opposing wing.

主权项

1. A personnel access door assembly of at least one opposing wing of an associated mine ventilation door, comprising:
a personnel access door including:
a frame including a top portion, a bottom portion, a first post portion and a second post portion, the top frame portion and the bottom frame portion coupled to respective top and bottom ends of the first post and second post portions, andat least one set of casters or rollers affixed to at least one of the bottom portion or the top portion of the frame; a top rail affixed to the at least one opposing wing, the top rail parallel to a top and bottom of the at least one opposing wing, the top rail configured to slideably engage the at least one set of casters or rollers; and a bottom rail affixed parallel to the bottom of the at least one opposing wing, the bottom rail and the top rail configured to slideably engage the at least one set of casters or rollers.