Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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DASINGER S A
Original Assignee
DASINGER S A
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Application filed by DASINGER S AfiledCriticalDASINGER S A
Priority to ES0073708UpriorityCriticalpatent/ES73708Y/en
Publication of ES73708UpublicationCriticalpatent/ES73708U/en
Application grantedgrantedCritical
Publication of ES73708YpublicationCriticalpatent/ES73708Y/en
"A NEW PERFECTED BELLOW", characterized in that it comprises two end plates, preferably metal, between which a tube of waterproofed fabric, such as rubberized fabric, is established, so that the respective ends of the tissue tube are hermetically adapted by their perimeters with the respective end plates mentioned above, and one of these plates is provided with holes in its surface, being arranged, below said orifices, a suction valve constituted by a flexible sheet as rubberized fabric, maintained joined by its center to the The lid in question, with the essential feature that an axial helical spring is housed inside the fabric tube, the two ends of which rest on the two covers in question, with a tendency to separate both end plates. (Machine-translation by Google Translate, not legally binding)