Abstract: A flow switch assembly which includes a valve housing that includes an upper body portion and a lower body portion that are rotatably engaged relative each other. The upper and lower body portions define a chamber. The housing includes an inlet and outlet to the chamber. A valve member seated in the chamber of the valve housing for movement between an open position establishing at least one passage between the inlet and the outlet and a closed position wherein the at least one passage between the inlet and the outlet is non-established (preferably by said valve member sealing at least one of said inlet and outlet). There is also provided interactive cam elements associated with at least one of the upper body portion and the lower body portion, and associated with the valve member, are provided for moving the valve member between the open position and the closed position when the upper body portion of the housing is rotated relative to the lower body portion.

Abstract: A safety system for overhead hoisting cranes is provided which incorporates a overload release coupling in the high speed drive shaft between the prime mover and the gear reducers driving one or more hoist drums with a dual reeving and a safety brake acting on the high speed drive shaft at the gear reducers and controlled by an overrunning clutch and a control means.

Abstract: A novel weighing system for cable hoist sheave systems is provided which utilizes a plurality of shear type load cells arranged in a stable 3-point configuration which is capable of supporting side loadings without destroying the vertical reading. Uneven distribution of the material does not affect the stability of the system and an accurate weight of the load is determined.

Abstract: A dental post method of installing posts in the roots of spaced apart teeth having non-parallel root canals by first drilling holes in the teeth in alignment with the root canals, placing a dental post in each of the teeth, measuring the angle of the advergents of the dental posts, and installing permanent dental posts having attachment stems offset relative to the anchor stems, the offset stem dental posts being rotated in the teeth so that the axes of the attachment stems are parallel.

Abstract: This invention involves a novel dental post having a groove provided thereon which facilitates the seating of the denture on the dental post, eases the masticatory load on the tooth root, and increases the retentive capabilities of the dental post.