A pressure regulator (134) according to the present invention is disclosed for regulating the expiratory flow (130) in a CPAP system (118). Prior art CPAP systems are typically regulated by adjusting the pressure at the gas supply. Similarly the gas supply is not able to provide high frequency oscillations on top of...

A method of making lamination stacks for electrical machines comprises producing generally symmetrical pole tips from alternating asymmetrical pieces. With the alternating asymmetrical pieces combined, the resulting pole tip is generally symmetrical with a larger possible pole tip width compared with currently- used...

A laundry washing machine has a cabinet 2 and a drum 1 suspended within the cabinet for rotation about a horizontal axis. The drum 1 includes a pair of drum ends with a pair of vanes 110,111 extending between the drum ends 11,12 rigidly connecting the drum ends together. The dress I has a eubateratially cylindri...

An appliance comprising a sealable chamber (10) and a door (12) for the sealable chamber (10), wherein in an opened position the door (12) allows access to the chamber (10); and a venting system for allowing air to escape from the sealable chamber (10) when the door (12) is in closed position, wherein the venting ...

A control for a linear compressor energises the linear motor in harmony with the present natural frequency of the compressor. The controller monitors the present operating frequency and compares the frequency with one or more outer limit thresholds. The control may remove power from the linear motor if the running f...

A drain pomp (and/or recirculating pump) for a clothes washing machine which has no dynamic leak paths exterior to the washing machine outer bowl. The pump is contained within a housing which is either formed integrally with the outer bowl or connects directly within an aperture provided in the bottom of the bowl ...

The present invention provides an improved design of linear motor as well as an improved control strategy. The design allows for a shorted stator, where the armature magnets are controlled to reciprocate to a greater maximum displacement than for a equivalent conventional linear motor. The control strategy is such t...

The present invention relates to a washing machine (7) and pump (8) for a washing machine (7). The pump is driven by a brushless DC motor (38). The pump can be controlled to improve the operation of the washing machine. In one aspect the invention comprises a washing machine (7) with a variable speed pump (8) for...

A transverse flux motor having multiple stator phase windings which arc electronically commutated to produce a rotating flux to drive a permanent magnet rotor (2) located externally of the stator (7). The stator (7) is formed by tvo complementary facing pieces (8, 9) each carrying half the stator pales (12,13). the ...

A laundry appliance such as a washing machine (2, 300) or a clothes drier (200) where user access to the clothes containing vessel (1, 201, 301) is facilitated by supporting the vessel in a structure (105. 205, 305) which may be tilted or slid out of the front of the appliance cabinet. When the structure is ...