Abstract: A grooved contracting connector is comprised of a resilient sheet member in the form of a coil having a plurality of circumferential grooves in the resilient sheet member coil. In one embodiment, an adhesive is applied to the inner surface of the resilient sheet member coil at least in the area between the grooves. Resilient sheet member coil is expanded to a larger diameter and held in the expanded condition by the heat sensitive bonding material. In connecting together tubular members, the tubular members are inserted, the connector is heated with the heat sensitive adhesive bonding material at least partially melting to allow the connector to contract firmly onto the tubing to form a tight and strong connection upon cooling.

Abstract: A stackable cable carrying reel has spaced parallel rings connected by exterior spokes arranged to permit a plurality of reels to be stacked, locking devices being provided to enable each reel to be locked to its next adjacent reel. Each reel has structure permitting an end of its cable to be connected a power supply.

Abstract: A connecting device for connecting together tubular members is comprised of a resilient sheet member in the form of a coil having at least partially overlapping surfaces. The inner diameter of the sheet member coil is less than the outer diameter of the members to be joined. A layer of heat sensitive adhesive bonding material is provided over the inner surface and subsequently after the formation of the connection on the outer surface of the sheet member coil. The sheet member coil is expanded to a larger diameter against the resiliently inwardly directed force of the sheet member and held in the expanded condition by heat sensitive adhesive bonding material. The expanded larger diameter is of a sufficient diameter to receive the ends of the members to be joined.

Abstract: A device is provided for connecting together the ends of pipes or tubing or for repairing a fault in a pipe or tubing. The device is comprised of a resilient sheet member in the form of a coil having a layer of heat sensitive bonding material applied to the inner surface of the resilient sheet member. The resilient sheet member coil is formed to an inner diameter slightly less than the outer diameter of the pipe or tubing. In the case where the resilient sheet member is used as a connector, the resilient sheet member is sprung to a diameter larger than the outer diameter of the pipe or tubing and retained in this expanded form by a heat sensitive material which melts upon being heated to allow contraction of the connector. At the same time, the heat sensitive bonding material forms a tight bond to the two ends of the pipes or tubing to be connected.