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. 04, 1985
Filed:
Jun. 30, 1983
Applicant:
Inventors:
Lawrence J Ryczek, Nashotah, WI (US);
William J Janutka, West Allis, WI (US);
Assignee:
Eaton Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
3311 / ; 331111 ; 331143 ;
Abstract
An adjustable frequency oscillator 2 is provided by a comparator timer 4 having a potentiometer 6 at its output 8 for concurrently changing both charging current and threshold trip voltage to control the frequency of oscillation of the comparator output. The oscillator is ideal for proximity switch applications, particularly photoelectric type proximity switches, for timing a delayed output signal following a given sensed condition.