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Individual
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Priority to ES212841ApriorityCriticalpatent/ES212841A3/en
Publication of ES212841A3publicationCriticalpatent/ES212841A3/en
Structures Of Non-Positive Displacement Pumps
(AREA)
Air-Flow Control Members
(AREA)
Abstract
Improvements in air pressure sound emitters characterized by having a metal outer casing formed by two hollow spherical sectors in its interior provided both with four holes drilled for coupling through a plastic sealing gasket and threaded pins of which the bottom is on its pole a perforation suitable for coupling and fitting a pivot whose base has been thinned to this finculio pivot for fixing a base plate of circular shape and concave surface lateral edge adapts to a circular recess provided next to the edge of said spherical sector. (Machine-translation by Google Translate, not legally binding)
ES212841A1953-12-211953-12-21Improvements in sound emissions at air pressure (Machine-translation by Google Translate, not legally binding)
ExpiredES212841A3
(en)