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Priority to ES1968137978UpriorityCriticalpatent/ES137978Y/en
Publication of ES137978UpublicationCriticalpatent/ES137978U/en
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Publication of ES137978YpublicationCriticalpatent/ES137978Y/en
Apparatus for opening and closing doors, characterized by being formed in its upper part by a set of knees or joints, attached at one end to the front lintel of the same door, place of the hinges and whose knees or joints make move a central axis, that opens or closes some valves that give movement by compression to an oil deposited in the bottom, which allows to brake in general the movement of the automatic closing, and the final movement, preventing the door from slamming. (Machine-translation by Google Translate, not legally binding)
ES1968137978U1968-04-191968-04-19
APPARATUS FOR OPENING AND CLOSING DOORS.
ExpiredES137978Y
(en)
Improvements in sliding doors of mechanical drive for hermetic closure of refrigerated cameras. (Machine-translation by Google Translate, not legally binding)