Abstract: A coupling device comprising a base member connectable to a first item and a release member connectable to a second item, the base and release members being releasably connectable together. The base member has a front face including a pocket. The release member comprises a body which is configured to be received in the pocket in a coupled position. The pocket has an open access end through which the release member can be slidingly inserted and removed. The base member includes a stop member moveable, by an actuator, between a lock position in which the stop member interengages with the release member to prevent removal of the release member from the pocket of the base member, and a release position in which the release member can be separated from the base member. A securing apparatus for releasably securing a mobile equipment to a support surface, and including the coupling device.

Abstract: A coupling device comprising a base member connectable to a first item and a release member connectable to a second item, the base and release members being releasably connectable together. The base member has a front face including a pocket. The release member comprises a body which is configured to be received in the pocket in a coupled position. The pocket has an open access end through which the release member can be slidingly inserted and removed. The base member includes a stop member moveable, by an actuator, between a lock position in which the stop member interengages with the release member to prevent removal of the release member from the pocket of the base member, and a release position in which the release member can be separated from the base member. A securing apparatus for releasably securing a mobile equipment to a support surface, and including the coupling device.

Abstract: A landplaster production method includes the steps of providing a supply of particulate gypsum material, drying the gypsum material by passing a stream of heated air thereby as the material is rotated, classifying and separating the dried particles into fines and coarse particles, collecting the suspended fines in a collector, passing the coarse particles to a grinder such as a roller mill for reducing the particles, and mixing the reduced particles with the collected fines for processing into landplaster. The elimination of fines from the feed to the grinder results in significantly greater production by increasing the efficiency of the grinder. Further, the dryer is modified to agitate the dried gypsum material so that it may be more easily introduced into the classifier/separator situated adjacent the drier discharge outlet.

Abstract: The present invention comprises a levelling clip for use during the installation of suspended ceiling systems. The levelling clip includes a base portion, rear retention means and front retention means for attaching the clip in sliding engagement to the wall angle moulding. The clip of the present invention provides a faster and easier means of installing a suspended ceiling system including levelling and squaring the pattern of main grid members and cross members of a suspended ceiling system.

Abstract: A clip provides a method for securing suspended ceiling tees to each other at an angle, especially but not necessarily at an angle other than a right angle. The clip has a body portion, an integral first tab portion projecting from one end of the body portion, an integral second tab portion projecting from the other end of the body portion, and preferably two integral tongue portions projecting from the body portion along either side of the second tab portion.