Patent ID: 9383248
Filing Date: 2016-07-05
CPC Classification: G01F,G08B

Claim Text:
1. An alarm for actuating a signal based on a level of a liquid in a cavity, the alarm comprising: a sphere, the sphere defined by a substantially hollow interior region, wherein the sphere is at least partially buoyant; a bar, the bar defined by a bar pivot end and a bar signal end, the bar configured to traverse the interior region of the sphere, the bar further configured to fasten to the interior region, wherein the bar moves in conjunction with the sphere; a cable, the cable defined by a proximal end and a distal end, the proximal end comprising an alarm contact, the alarm contact disposed to attach to the bar signal end; an axis arm, the axis arm defined by an arm pivot end and an arm signal end, the arm pivot end disposed to pivotally join with the bar pivot end, wherein the axis arm is configured to pivotally maintain a vertical orientation relative to the sphere and the bar, the arm signal end comprising a magnet, the magnet configured to actuate the alarm contact when positioned proximally to the bar signal end; wherein, if the cable is taut, the bar signal end and the attached alarm contact are pivotally pulled distally from the magnet; wherein if the cable is lax, the bar signal end and the attached alarm contact pivot are pivotally released proximally towards the magnet; and a counterweight, the counterweight disposed to attach to the bar signal end, the counterweight configured to localize a center of gravity on the sphere for biasing the bar signal end and the attached alarm contact proximally to the magnet.