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US 5,006,834 AGranted
Liquid level alarm
OwnerDavid J. Fountaininventor
Life of this patent
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Abstract
An apparatus for providing a signal to indicate liquid level above a pre-determined level in a container. The apparatus includes a device for defining a fixed reference level. An alarm unit having an alarm and an alarm actuator is connected to the defining device. A float is connected to the alarm unit and rests on the surface of the liquid. The float actuates the alarm actuator to activate the alarm when the surface of the liquid reaches the pre-determined level.
Claims22
An apparatus for providing an alarm signal to indicate when liquid reaches a pre-determined level in a container, the apparatus comprising:
- (a) means for pre-determining the level of the liquid at which the alarm signal will actuate;
- (b) a mechanically pre-set non-electrical alarm unit having a mechanical alarm and a push-pull alarm actuator connected to said pre-determining means;
- and
- (c) a float means for resting on the surface of the liquid connected to said alarm unit and said pre-determining means and movable with respect to the predetermined level of the liquid for moving said actuator in a substantially axial direction to activate said mechanical alarm when the surface of the liquid reaches the pre-determined level of the liquid.
1 more element
Dependencies are inferred from the claim text.