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Individual
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Individual
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Priority to ES1971172611UpriorityCriticalpatent/ES172611Y/en
Publication of ES172611UpublicationCriticalpatent/ES172611U/en
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Publication of ES172611YpublicationCriticalpatent/ES172611Y/en
Optical viewfinder for fluids, essentially characterized by the fact that it comprises a piston housed therein which constitutes the fluid passage indicator, if this is effected in the correct direction, whereas otherwise it acts as a check valve and because the optical indication it occurs as long as there is a greater or lesser flow of fluid, regardless of the pressure existing in the circuit and because the only moving part that is said indicator piston, makes its movement in suspension within the circulating fluid. (Machine-translation by Google Translate, not legally binding)
ES1971172611U1971-09-241971-09-24
OPTICAL VISOR FOR FLUIDS.
ExpiredES172611Y
(en)