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. 06, 1983
Filed:
Jun. 19, 1981
Pauli Jarvinen, Vantaa, FI;
Eflab Oy, , FI;
Abstract
An oscillator operating within the frequency and with the wave shape selected for the operation of the device cooperates with transmitter strips of a length of the desired distance of indication of the movement and formed, e.g., in the way of printed circuits as connected to the said oscillator, as well as corresponding receiver strips as connected to a differential amplifier, e.g. to the amplifier of an integrated circuit. Hereinafter it is possible, by means of the indicator, to indicate a connecting together of the transmitter strips and the receiver strips by means of mobile plates placed on the device whose position is supposed to be indicated. According to the invention, the transmitter strips and the receiver strips are formed in such a way in pairs that the mobile plates, when placed on one side of the indication point, connect a certain one of the transmitter strips with a certain one of the receiver strips but, after the mobile plates have moved to the other side of the indication point, this connection has become opposite.