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:
Oct. 24, 1989
Filed:
Jul. 11, 1988
Phillip P Fleckenstein, Port Huron, MI (US);
Silomaster, Inc., Port Huron, MI (US);
Abstract
A drop-weight material level indicator in which a spool is mounted above material whose level is to be sensed and is coupled to a motor for selectively unwinding and winding a drop line wound on the spool. The drop line is trained over an idler pulley carried at the end of a pivot arm, and over a second idler pulley to a drop weight. Level sensing electronics are coupled to the second idler pulley for measuring the amount of cable unwound as the drop weight descends toward the upper surface of the material. A magnet is carried on the pivot arm, and a reed switch is positioned adjacent thereto for sensing removal of tension from the drop line and consequent pivotal motion of the arm, and thereby indicating rupture of the drop line to an operator.