(19)
(11) EP 0 310 405 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.08.1989 Bulletin 1989/31

(43) Date of publication A2:
05.04.1989 Bulletin 1989/14

(21) Application number: 88309075.5

(22) Date of filing: 30.09.1988
(51) International Patent Classification (IPC)4: A61G 7/10, A61G 5/00, F15B 1/00
(84) Designated Contracting States:
BE CH DE ES FR GB GR IT LI LU NL SE

(30) Priority: 30.09.1987 GB 8722995

(71) Applicant: MANGAR AIDS LIMITED
Presteigne Powys Wales, LD8 2UF (GB)

(72) Inventor:
  • Rimington, Richard Michael c/o Mangar Aids Limited
    Presteigne Powys Wales (GB)

(74) Representative: Parker, Nigel Edward et al
H.N. & W.S. Skerrett Charles House 148/9 Great Charles Street
Birmingham B3 3HT
Birmingham B3 3HT (GB)


(56) References cited: : 
   
       


    (54) Improvements in or relating to compressed air supply apparatus


    (57) A motor driven compressor 16 is supplied with power from a battery 3 and supplies compressed air at outlet 21 of air base 22. Compressed air via hose 22 is supplied to a lifting device, for example a bellows of an invalid seat assembly. In the apparatus 1′ the output of the compressor C is passed through a non-return valve 4 so that when the compressor is turned off supplied air cannot bleed back through the compressor. Pressure switch 6 breaks the electrical circuit should pressure build up excessively at the output 21. Additionally, air dump valve 5 is provided to enable pressure in the output line 22 to be vented to atmosphere. Operation of the compressor C is controlled by hand control 7′.







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