Operating-condition indicator for vacuum cleaners
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United States of America Patent
Stats
-
Nov 13, 1984
Grant Date -
N/A
app pub date -
Apr 15, 1983
filing date -
Mar 29, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An operating condition indicator for vacuum cleaners which has a diaphragm switch which responds to vacuum and a luminous indicating device. The operating-condition indicator is intended for vacuum cleaners which have a turboblower which acts directly on the suction connection and is arranged in front of the dust bag, the pressure detected in the region of the suction opening becoming less as the dust bag becomes increasingly full. The vacuum is detected at the suction opening and fed to a diaphragm switch having additional spring biasing, as a result of which an indication of readiness for operation is obtained when the motor is off and, in addition, a warning indication is given when the dust bag is excessively full, without the necessity of actuating a switch.
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