Abstract: The present disclosure teaches a filtering device. The filtering device comprises a transforming unit, at least a first filtering element and a complementary filtering unit. The filtering device of the present disclosure allows an isolation of radio signals within a selected frequency band. Frequency bands closely-spaced to the selected frequency band may be suppressed. The present disclosure provides a reliable and almost identical response to temperature changes for the pass band within the selected frequency band and the stop bands closely-spaced to the selected frequency band. The filtering device withstands temperature changes without affecting a filtering performance different to the prior art. The present disclosure further provides a method for filtering an input signal as well as a computer program product for the manufacture of the filtering device and a computer program product for the carrying out of the method of filtering.

Abstract: A hydromassage apparatus produces a whirlpool action in a conventional bathtub having a water inlet, conduit and drain valve control in the end of the bathtub. The hydromassage assembly is adapted to be partially immersed in the bathtub filled with a supply of water and includes a housing having a pair of leg portions positioned adjacent opposing sides of the drain valve control and down the ends of the bathtub. The leg portions have lower portions which are adapted to be immersed in the bathtub when filled with a liquid. The housing also includes an intermediate portion innerconnecting the leg portions. The housing has an inlet chamber and an outlet chamber extending between the lower immersed portions of the legs. The inlet chamber has at least one inlet opening in each of the legs for receiving liquid contained in the bathtub into the inlet chamber.