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Priority to ES1971175440UpriorityCriticalpatent/ES175440Y/en
Publication of ES175440UpublicationCriticalpatent/ES175440U/en
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Publication of ES175440YpublicationCriticalpatent/ES175440Y/en
Hydraulic retarding device, of the type comprising a cylinder (15), a piston (13, 14) displaceable in said cylinder (15) and connected to an element (7) with a view to slowing the movement, and means to make imperfect the tightness of the cylinder (15) when establishing a reduced and predetermined communication between the inside and outside of said cylinder (15), characterized in that said means for imperfect-sealing the cylinder (15 consist of at least one interruption of continuity (23, 26, 24), introduced in the internal wall of the cylinder (15) in correspondence of at least a part of the length (1) of the operative stroke carried out by the piston (13, 14) in said, cylinder (15). (Machine-translation by Google Translate, not legally binding)
Machines with at least one cylinder and a piston body movable therein, wherein the seal between the piston body and the cylinder wall is formed by at least one roller diaphragm.