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:
Sep. 21, 1976
Filed:
Feb. 27, 1975
Albert J Bachman, Bristol, CT (US);
De Laval Turbine Inc., Princeton, NJ (US);
Abstract
The invention contemplates position-indicating means particularly applicable to producing an electrical indication of liquid level and employing one or more magnetic-reed switches at a selected one or more fixed positions or levels to be monitored. The switches may be in longitudinally spaced array within a single elongate housing, for proximity response to the field of a magnetized actuator element as it assumes various longitudinal positions external to and along the housing. At each switch station, a magnetic-latch element, which is the means of magnetically actuating the switch contacts, has limited freedom of longitudinal displacement into and out of its region of switch actuation. At each station passage, the external actuator element is operative upon the adjacent magnetic-latch element to draw the latter through its limited displacement, and magnetic means are employed to retain the thus-displaced position of each latch element, whereby the closed or open conditions of the switch contacts remains, regardless of the extent to which the external actuator element is moved beyond its region of influence upon a particular latch element.