Beds – Bedclothing – And protector therefor
Patent
1985-06-12
1987-05-26
Smith, Gary L.
Beds
Bedclothing
And protector therefor
5451, 5109, 128 33, A47C 2100, A47C 2708, A61H 100
Patent
active
046673580
ABSTRACT:
A water bed mattress is caused to undulate for therapeutic or other purposes. A solenoid (14) is mounted at one end of the water bed (head or foot), and its output shaft (15) and mattress engaging pad or pusher plate (16) are disposed at an angle so that the pad forms an acute angle with the horizontal. The pad is thus engaged by oncoming waves form the remote end of the bed in a more facing type direction, which lessens the lateral stresses on the said output shafts. The solenoid is actuated by a control device (18) which provides a generally square electrical wave control signal and which utilizes independent variable TIME ON and TIME OFF modes providing maximum flexibility of solenoid operation.
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Smith Gary L.
Trettel Michael F.
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