Abstract: Slide bearing plates and related methods of use. A slide bearing plate has a body; a pipe shoe slide channel defined in a top face of the body; in which opposed walls and a base of the pipe shoe slide channel are made of a bearing material. A slide bearing plate has a body; a pipe shoe slide channel defined in a top face of the body; and a beam slide channel defined in a base face of the body. A slide bearing plate has: a body formed of a bearing material; and one or more of: a pipe shoe receptacle defined by a top face of the body; or a beam receptacle defined by a base face of the body. A pipe support stand has: a pipe; a pipe shoe supporting the pipe; a slide bearing plate supporting a base of the pipe shoe within the pipe shoe slide channel. A method involves installing a slide bearing plate between a pipe shoe and a support beam.

Abstract: An apparatus comprising: a frame; a shaft mounted to the frame for rotation; plural vanes each mounted for rotation about a respective pitch adjustment axis on one or more respective arms extending from the shaft; a collar mounted to the frame coaxial with the shaft, the collar having a first outer circumferential surface defining a convex cam shape, and a second outer circumferential surface defining a non cam circular shape; and plural followers arranged to contact the first outer circumferential surface in a first configuration corresponding to a first speed of rotation of the shaft and the second outer circumferential surface in a second configuration corresponding to a second speed of rotation of the shaft, the second speed being higher than the first speed, the plural followers being each connected to adjust the pitch of a respective vane of the plural vanes.

Abstract: An apparatus comprising: a frame; a shaft mounted to the frame for rotation; plural vanes each mounted for rotation about a respective pitch adjustment axis on one or more respective arms extending from the shaft; a collar mounted to the frame coaxial with the shaft, the collar having a first outer circumferential surface defining a convex cam shape, and a second outer circumferential surface defining a non cam circular shape; and plural followers arranged to contact the first outer circumferential surface in a first configuration corresponding to a first speed of rotation of the shaft and the second outer circumferential surface in a second configuration corresponding to a second speed of rotation of the shaft, the second speed being higher than the first speed, the plural followers being each connected to adjust the pitch of a respective vane of the plural vanes.