摘要:
The disclosure includes multi-layered panels (10) including exterior layers of glass (12, 44) and interior layers of urethane (20, 36) and at least one layer of polycarbonate (16) between the urethane layers (20, 36) that result in enhanced shatter resistance within panels that weigh between about 4.1 and 4.6 pounds per square foot. An insertion tab (23) of the polycarbonate layer (16) enhances performance of the panel (10). A method of on-site retrofitting and reinforcing of existing passageway (70) frames (72) without removal of the frames (72) from a building provides for low-cost, highly efficient improvement of intrusion resistance of passageways (70) such as doors and windows of schools, hospitals and other public and private buildings.
摘要:
The disclosure includes multi-layered panels (10, 60, 204) including exterior layers of glass (12, 44) and interior layers of urethane (20, 36) and at least one layer of polycarbonate (16) between the urethane layers (20, 36) that result in enhanced shatter resistance within panels (10, 60, 204) that weigh between about 4.1 and 4.6 pounds per square foot. The panels (10, 60, 204) include an insertion tab (23, 61, 23″) of the polycarbonate layer (16) that enhances performance of the panel (10). Reinforced passageways (70, 200, 300), such as doors and windows of schools, hospitals and other public and private buildings, are disclosed using the multi-layered panels (10, 60, 204) with the insertion tab (23, 61, 23″).
摘要:
The disclosure includes multi-layered panels (10, 60, 204) including exterior layers of glass (12, 44) and interior layers of urethane (20, 36) and at least one layer of polycarbonate (16) between the urethane layers (20, 36) that result in enhanced shatter resistance within panels (10, 60, 204) that weigh between about 4.1 and 4.6 pounds per square foot. The panels (10, 60, 204) include an insertion tab (23, 61, 23″) of the polycarbonate layer (16) that enhances performance of the panel (10). Reinforced passageways (70, 200, 300) such as doors and windows of schools, hospitals and other public and private buildings, are disclosed using the multi-layered panel (10, 60, 204) with the insertion tab (23, 61, 23″).
摘要:
A screen system for covering openings such as windows and doors includes a frame having a screen mounting portion for receiving an edge of a screen and a retainer bar. The screen is sandwiched between the frame and the retainer bar and the assembly is of heavy-duty constriction to resist high impact forces caused by hurricane force winds and accompanying flying debris. The retainer bar and frame can include one or more barbs to assist in capturing the screen and resisting forces. The retainer bar is also designed to pivot during assembly to tightly draw the screen across the opening in the frame.
摘要:
A vertical door system includes: a door having a door frame, the door frame having at least one frame section; an operator; two vertical supports configured to: (a) be installable on opposite sides of the door opening and (b) support the vertical door, at least one of the vertical supports having: a guide track on a surface of the vertical support facing toward the door opening; and a drive system having: an elongated threaded rod drivable by the operator via a gearing arranged between the operator and the threaded rod; and one or more blocks, each block comprising a guide track connecting portion that connects to a guide track so the connected block is freely movable along the guide track, each block having a through-bore for accepting the threaded rod so that the block is positioned on the threaded rod and is movable along the threaded rod.
摘要:
A retention system for window frames incorporating hook and loop fastener elements and novel sealing means which discourages unauthorized tampering with the retaining elements.