This patent application is assigned to Caterpillar Inc.
The following quote was obtained by the news editors from the background information supplied by the inventors: “Cabinets, such as inverter cabinets include doors that can be detached from an enclosure of the cabinet. The doors are generally fastened and/or sealed to a frame of the enclosure using fasteners and have gasket seals. Fastening the doors to the enclosure may require a manual force to be applied on the door against the enclosure. However, applying too much force on the door may damage the fasteners and/or the gasket seals. Additionally, while fastening and/or unfastening the door from the enclosure, the fasteners tend to fall out of the door, which may not be desired as per safety regulations. Also, according to various safety requirements, it may be important to ground the doors to the enclosure.”(…)
via Caterpillar : “Fastener Assembly for a Door” in Patent Application Approval Process | 4-Traders.