Abstract: A valve for an electric storage battery, including a cap housing for being positioned in an access port in the battery, the cap housing having interior side walls defining a gas-flow orifice therethrough. A valve member is positioned in the gas-flow orifice of the cap housing, and comprises a valve body, including at least one vent defining a gas-flow passage from an upstream to a downstream side of the valve body, a resilient, radially-outwardly extending annular skirt positioned on the downstream side of the valve body in gas-flow communication with the vent, the skirt extending radially outwardly from the valve body in the downstream direction. The skirt has an outermost free end normally sealingly engaging the side walls of the cap housing defining the gas-flow orifice. The annular skirt and adjacent side walls of the cap housing define therebetween an annular recess in gas-flow communication with the vent.

Abstract: A slider bed conveyor apparatus and associated method comprising a conveyor belt system having a frame, a slider bed and head and tail idler rollers on either end of the slider bed that are secured to and in recessed position to the slider bed and a conveyor belt running over the idler rollers. When loads such as impact loads are placed on the conveyor belt, the slider bed supports the conveyor belt at the point where the material is loaded. This action resists sagging and stretching of the conveyor belt and also reduces wear on the idler rollers. The idler rollers are each mounted on a shaft and are adapted to be vertically adjustable depending on load requirements. The conveyor belt system is modular and of unitary structure and several modules can be joined so as to form a conveyor belt system of any desired length.