Water bed with wave generation and control mechanism
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United States of America Patent
Stats
-
May 26, 1987
Grant Date -
N/A
app pub date -
Jun 12, 1985
filing date -
Jun 12, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
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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