Abstract: A wheel bearing pressure lubricator comprising a hollow body having an open end connected with a wheel hub and forming a closure cap therefor, a piston sealingly and slidably mounted in the body and a spring member urging the piston toward the hub and bearings therein and constantly applying a positive pressure on the lubricant packing the hub. A lubrication fitting for filling the lubricator is attached to the body and an overflow aperture is disposed to the sidewall of the body at a point adjacent to the hub filled position of the piston for relieving excess lubricant pressure and a piston position indicator providing visual indication when the piston is in hub filled position and when the piston is in no pressure position at which the piston ceases to apply pressure to the lubricant in the hub.

Abstract: An automatic lubricator for wheel bearings and closure cap for wheel hubs comprises a hollow body having an open end connected with the hub, a piston sealingly and slidably mounted in the body, and a spring member urging the piston toward the bearing and constantly applying a positive pressure on the lubricant packing the hub. A lubrication fitting for filling the lubricator is attached to the body adjacent to the open end thereof, and an overflow aperture is disposed through a side wall of the body at a point adjacent to the piston for relieving excess lubricant pressure. A heat responsive member located in the body is operative to release lubricant from the hub cavity in response to an abnormally high lubricant temperature.

Abstract: An assembly for mounting an electric lamp bulb of the type adapted to mate with a bayonet coupling. The assembly includes a one-piece housing of insulating material that completely surrounds a portion of the bulb base. For insulation of the bulb from vibration and to reduce the likelihood of corrosion, metal to metal contact involving the bulb is minimized. A biasing force provided by the resilient deformation of the housing material is used to provide electrical contact between an electrical lead and a bulb base terminal despite the fact that the housing material is semi-rigid.