Showing papers on "Inductive sensor published in 1968"
Patent•
23 Dec 1968TL;DR: In this paper, an electronic closure detection system for sensing presence or absence of closures is presented, which includes one or more inductive sensors which form part of the frequency-determining network of an oscillator, the frequency of the oscillator being changed by sensed presence of a closure.
Abstract: An electronic closure detection system for sensing presence or absence of closures and, in particular, closures normally hidden from view. The apparatus includes one or more inductive sensors which form part of the frequency-determining network of an oscillator, the frequency of the oscillator being changed by the sensed presence of a closure. Determining circuitry responsive to the output of the oscillator controls energization of means for indicating presence or absence of the closures, and provides a signal for proper gate operation where applicable.
5 citations
Patent•
20 Sep 1968
TL;DR: In this paper, a fluid logic control and power supply device for sensing and indicating the proximity or gap between a sensor and a driven element is presented, where the same supply provides power to an air motor which drives the driven member and maintains it in a desired position in relation to the proximity sensor.
Abstract: A unipressure fluid logic control and power supply device which utilizes a single air pressure source for sensing and indicating the proximity or gap between a sensor and a driven element. The same supply means provides power to an air motor which drives the driven member and maintains it in a desired position in relation to the proximity sensor. The sensing device includes a fluid oscillator adapted to drive the piston-type air motor and an air inhibitor which prevents the oscillator from operating whenever a sensed fluid signal indicates the proximity or position of the driven member is as desired.
4 citations