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Aubrey E Corbett, Siu L Ho, Ronald J Clark: Inflatable supports. Glynwed Group Services, Larson Taylor and Hinds, October 7, 1980: US04225989 (162 worldwide citation)

A ripple bed has an upper and a lower inflatable layer. The upper layer has separate air passages which are independently inflatable and deflatable to provide the rippling effect. The lower layer is separately inflatable to provide support over any area of the upper layer which is deflated.


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Warnock Robert Joseph, Bharj Davinder: Air compressor equipment.. Glynwed Group Services, August 6, 1980: EP0014085-A1 (12 worldwide citation)

A housing (10) contains a resiliently mounted electric motor (32) and compressor (30), which draws air into the housing through inlets (23) via a tortuous passage (20) formed by sound absorbent baffles (22), and delivers the air externally of the housing through outlets (54, 56). The housing (10) is ...


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Infra-red cooking devices. Glynwed Group Services, April 25, 1979: GB2005824-A (5 worldwide citation)

A cooker comprises a housing 10 with an opening to receive a removable container 24 which is transparent to infra-red radiation. One or more infra- red tubes 28 are arranged in the housing around the container, with a reflector 20 to direct radiation towards the container. Such a cooker can replace ...


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[en] Drying equipment, especially for clothes. GLYNWED GROUP SERVICES, February 28, 1979: GB2002891-A (4 worldwide citation)

[en] Hot air dryers which exhaust hot moist air tend to cause condensation in the room in which they are housed. The Specification describes a tumble dryer for clothes which has a rotatable drum 42. Hot, moist air is extracted by a fan 54 to one half 58 of a heat pipe device 56. Here the air is cool ...


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Pole changing induction electrical machines. Glynwed Group Services, April 23, 1980: GB2031660-A (2 worldwide citation)

An induction machine has a core with a number of slots (s) and a double layer winding comprising two phase-windings (A, B) for two-phase operation (Fig. 14a) at a first pole number (2p) using a capacitor C/p. the top layer has conductors assigned to s/4p successive slots for each pole of each of the ...


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Heat actuated heat pump and turbine. Glynwed Group Services, October 21, 1981: GB2073862-A (2 worldwide citation)

A heating system comprises: (i) a power circuit (A) having a continuous flow path (10) for working fluid, a heater (14) for heating the working fluid at supercritical condition in one part of said circuit, a turbine (16) in the circuit arranged so as to be driven by the working fluid passing around ...


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Hayward Anthony Robert, Ball Edward: Electronic lock and key, and an alarm system incorporating same.. Glynwed Group Services, May 14, 1980: EP0010870-A1 (1 worldwide citation)

A key (26) comprises a resistor (R40) of a predetermined value which can be connected to a socket (S) of an electronic lock, where it forms a divider with a resistor (R29). A window comparator (A2, A3) determines whether or not a resistor in a certain range around the predetermined value has been co ...


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Speed control apparatus for an a.c. miniature motor. Glynwed Group Services, February 27, 1980: GB2028031-A (1 worldwide citation)

The apparatus comprises an inverter which has a variable frequency input at 16, causing transistors T1 and T2 to switch. Transistor T2 supplies current to the motor M through an isolating capacitor C2, and has a bootstrap capacitor C3 providing positive feedback to maximise its voltage swing. A resi ...


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Air compressor equipment. Glynwed Group Services, October 8, 1980: GB2043787-A (1 worldwide citation)

An air compressor unit has a housing (10, 12) containing a resiliently mounted electric motor (32) and compressor (30), which draws air into the housing through inlets (23) via a tortuous passage (20) formed by sound absorbent baffles (22), and delivers the air externally of the housing through outl ...