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. 20, 1992
Filed:
Nov. 08, 1991
Leo M Lester, Medford, MA (US);
Asahi/America, Inc., , MA (US);
Abstract
A position indicator apparatus is provided for rising stem valves. The position indicator apparatus includes a switch having a rotatable switch post. The switch is operatively connected to a power source and to a signal, such that a circuit to the signal is selectively completed or broken depending upon the rotational orientation of the switch post. The switch is rigidly mounted in a selected position relative to a valve housing. A connecting beam extends from the switch post to the valve stem such that movement of the valve stem into or out of the valve housing causes a rotation of the switch post to complete the circuit to the signal for certain positions of the valve stem and to break the circuit to the signal for other positions of the valve stem.