HUYSER, JAN,ROFF, SIMON,HIBBERDINE, BOB,DAVIES, RHYS
申请号：
CA2736332
公开号：
CA2736332C
申请日:
2009.09.03
申请国别(地区):
CA
年份:
2018
代理人:
摘要：
An alternating pressure pad (1) comprises inflatable cells (9,10) suppliedwith air by supply lines (7, 8) from acompressor (2) via supply line (3). A pressure controller controls the outputof the compressor. Also connected to supply line (3)is an angle detection valve (40) restricting flow of air to atmosphere withincrease in its angular position and a pressure transducer(17). Any increase in pressure due to an increase in angle of the detectionvalve (19) results in back pressure in the detection line.The pressure controller (2) uses the pressure transducer (17) to detect thischange in pressure and then acts to adjust compressoroutput to the cells (9, 10) accordingly. The angle detection valve (40) ispositioned under the head section of the pad to move withthe head rest section.
