Abstract: A turbine exhaust casing (TEC) cooling arrangement for a gas turbine engine includes cooling the struts of a TEC using compressed air communicated from one of the engine's compressors.

Abstract: A turbine exhaust casing (TEC) cooling arrangement for a gas turbine engine includes cooling the struts of a TEC using compressed air communicated from one of the engine's compressors.

Abstract: A heating device suitable for attachment to a bicycle seat. The device comprises a heating cushion having a seating surface. Further, the device comprises a seat cover configured to hold the cushion on top of the seating surface of the bicycle seat. The cushion is provided with one or more recesses in its seating surface. Also, the seat cover comprises one or more portions of flexible sheet material configured to cover said one or more recesses such that one or more cavities are formed between the one or more portions of flexible sheet material and the cushion.

Abstract: A medical implant such as a heart stimulator has a detector which detects an extracorporeally generated interrogation signal for at least one predetermined working parameter of the medical implant. The interrogation signal is generated by an interrogation signal device capable of only unidirectional communication to the medical implant. The implant includes a response signal generator which generates an extracorporeal detectable response signal, detectable, for example, by a stethoscope, which indicates only if the interrogated working parameter has a satisfactory value or a non-satisfactory value.