Patent ID: 9447684
Filing Date: 2016-09-20
CPC Classification: E21F

Claim Text:
1. A mine stopping panel comprising first and second elongate panel members of channel shape, each panel member having a web, first and second flanges at opposite sides of the web, and in-turned lips at outer edges of the flanges, said first and second panel members having a telescoping sliding fit one inside the other along an axis extending lengthwise of the panel members, an elongate first end cap extending between the first and second flanges of the first panel member on an inside surface of the web of the first panel member, said first end cap defining a first cavity for receiving a first end seal for sealing engagement with a first mine surface; a first set of one or more louver connections between the first panel member and the first end cap holding the first end cap against movement relative to the first panel member when an extending force is applied to the first end cap tending to telescopically extend the first panel member relative to the second panel member in a first direction along said axis to bring the first seal into pressure engagement with said first mine surface, each of said one or more louver connections comprising a louver projecting through a louver opening.