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Liquid Carrying Tubing With Spiral Flexibility Disclosure Number: IPCOM000082927D
Original Publication Date: 2005-Feb-28
Included in the Prior Art Database: 2005-Feb-28
Document File: 1 page(s) / 46K

Publishing Venue



Tubes carrying water from a manifold fixed to a electronics cage need flexibility so that the cage can be slid out for repair and upgrades without having to break the water connection. Breaking water connections is expensive and prone to leaks. Flexible rubber/polymer tubings are generally soft and therefore have poor materials properties. Hard tubings are generally superior, but lack flexibility. The invention proposes imparting flexibility to a hard tubing, so that it can maintain water connections when the electronic cage is slid out of the frame for repair/upgrade action.

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Liquid Carrying Tubing With Spiral Flexibility

A spiral tube is proposed to make flexible connections between a fixed manifold connection point on the frame and an electronic cage that can be slid out for repair/upgrade without breaking the water connection.

The invention is illustrated in the figure below. The bold feature is the spiral tube one end connected and fixed in space to a manifold on the frame, the other end connected to an electronic cage in the frame. The cage can slide in and out moving the water connection point with it. Therefore, to maintain the water connection, the water carrying tube has to be flexible. Tube flexibility can be achieved by using a soft tube, similar to a garden hose; or it can be achieved by using a coiled hard tube. Both these options are available in the market place. The soft tube approach suffers from the disadvantage of having poor materials properties, such as water and gas permeability and mechanical strength. The coil hard tube approach requires more space which has the thickness dimension of the tube of times the number of turns.

    The proposed invention overcomes the soft tube and the coiled hard tube disadvantages by using a spiral hard tube as shown in the figure below. When the cage is fully seated in the frame, the spiral hard tube shape is essentially planar -- the tube spiral is confined to a plane with thickness equal to the tube outer diameter. When the cage is slid out for repair/upgrade action, the spiral tub...