The Cassellie Product
24.Although the normal construction of a claim must in principle be done without the alleged infringement in mind, a comparison between the claimed and the accused product or process can direct attention to the parts of the claim that require interpretation. 25.There are two relevant features of Cassellie’s product in use. First, the water pipes in the wall are not connected directly to the inlets of the shower or other appliance. They terminate inside the wall and are connected to what I will call an ‘intermediary pipe’. The intermediary pipe passes from the pipe in the wall, through the mounting member or plate, to the shower inlet to which it is attached. 26.Secondly, the intermediary pipe has a screw thread on its periphery. It is fixed to the plate using one nut each side of the plate. The nuts are rotated on the screw thread of the intermediary pipe until they abut opposing sides of the plate, locking the intermediary pipe into a fixed position relative to the plate. 27.These are diagrams on the fitting instructions supplied with the Cassellie product. The diagram on the left shows nuts yet to be rotated to fix the intermediary pipes to the plate, the one on the right showing locked intermediary pipes: