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National Research Development Corp UK
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National Research Development Corp UK
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Publication of ES205317A1publicationCriticalpatent/ES205317A1/en
Improvements in check valves for pumps characterized by the arrangement of an externally formed body or body with a circumferential groove, with one or more passages for the circulation of fluid through said groove and an elastic ring that fits within the base of said groove. And is placed at least partially within the groove normally forming a seal with the sides and/or the base of the groove so as to prevent the flow of fluid through the passages that open into the base of the groove but which can be expanded by fluid pressure at the base of the slot to allow fluid to flow from such passages out of the slot. (Machine-translation by Google Translate, not legally binding)
ES0205317A1951-09-171952-09-10Improvements in retention valves for pumps (Machine-translation by Google Translate, not legally binding)
ExpiredES205317A1
(en)
Device for improving the performance of internal combustión engines and valves that allow their application. (Machine-translation by Google Translate, not legally binding)
New type of automatic unloader with double siphon for all kinds of tanks or water tanks for toilets. (Machine-translation by Google Translate, not legally binding)