The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 05, 1983
Filed:
Apr. 28, 1981
Donald E Roach, II, Marysville, MI (US);
Berwind Corporation, Philadelphia, PA (US);
Abstract
Apparatus for indicating the level of flowable material in a storage bin comprising a motor rotatably suspended by a spring within a protective enclosure and a drive shaft coupled by a ball-and-detent clutch to a paddle disposed within the bin to engage material therein. When the material reaches the level of the paddle, the drag on the paddle causes the motor to rotate within the enclosure and thereby to activate a switch disposed within the enclosure and coupled to the motor. A spring returns the motor to the switch-deactivated position when the material level decreases and the consequent drag is removed from the paddle. Electronic circuitry disposed within the housing includes field-selectable fail-safe circuitry for indicating either a high or a low material condition in the event of a power failure or the like independently of actual material level.