Abstract: The present invention relates to an automatic safety gate for covering a gap or opening in a protective barrier installed on an upper floor or mezzanine. The automatic safety gate broadly includes a frame which defines an opening, a netting for closing the opening, and devices for raising and lowering the netting to move the netting between a first position where the opening is closed and a second position where the opening is accessible. The frame preferably includes a lower bar which can be raised and lowered to which the netting is attached. The raising and lowering devices preferably comprise a pair of air cylinders connected to the lower bar.

Abstract: A secure and tamper resistant safety web assembly for a ground level hatch frame opening over a subterranean chamber horizontal affixable within hatch frame walls has pair of support brackets linked to a safety net that can be engaged so that it cannot be disengaged from the support brackets and is latchable closed to prevent the net from slipping if stressed. The structure is adaptable to be retrofit in most existing hatches. The stop end on the guide channel can include a link eye to receive a spring biased snap latch.

Abstract: A safety net assembly and system is provided which includes at least two rods having attaching brackets at their ends. The brackets may be engaged over ledges in a frame that defines an opening over a subterranean work place. A net or webbing is slideably engaged on the rods, so that it may be opened for access and spread to cover the opening, to prevent a person from falling through the opening when the assembly or system is in place. Where there are insets in the ledges, the assembly or system may be left in place without interfering with the placement of a normal cover for the opening.