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:
Jun. 29, 2010
Filed:
Mar. 16, 2006
Eugene P. Sabini, Skaneateles, NY (US);
Jerome A. Lorenc, Seneca Falls, NY (US);
Kenneth L. Hauenstein, Seneca Falls, NY (US);
Eugene P. Sabini, Skaneateles, NY (US);
Jerome A. Lorenc, Seneca Falls, NY (US);
Kenneth L. Hauenstein, Seneca Falls, NY (US);
ITT Manufacturing Enterprises, Inc., Wilmington, DE (US);
Abstract
A method and apparatus are provided for obtaining the rotational speed of a pump system or other suitable rotating equipment having a self-contained pump electrical equipment power supply. The method features, before being rectified, directing one phase of AC power through a zero crossing circuit that identifies an instant of time the AC voltage crosses from one polarity to the other polarity and triggers a square wave pulse for each instant time. In operation, the AC voltage is detected when it crosses from a negative polarity to a positive polarity, or vice versa. The method also includes steps for measuring the period of the square wave pulse and calculating the speed of the pump or other rotating equipment.