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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Cristaleria SL
Original Assignee
Cristaleria Espanola SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Cristaleria Espanola SAfiledCriticalCristaleria Espanola SA
Priority to ES1970162318UpriorityCriticalpatent/ES162318Y/en
Publication of ES162318UpublicationCriticalpatent/ES162318U/en
Application grantedgrantedCritical
Publication of ES162318YpublicationCriticalpatent/ES162318Y/en
Improved check valve for hydraulic door closers, characterized in that the new arrangement of the truncated cones, independently of the viscosity curve of the oil, admits strong temperature changes, without the need for new regulation. (Machine-translation by Google Translate, not legally binding)
ES1970162318U1970-10-101970-10-10
PERFECTED RETENTION VALVE FOR HYDRAULIC DOOR CLOSERS.
ExpiredES162318Y
(en)
Device that regulates and ensures the closing and opening of doors, windows and similar. (Machine-translation by Google Translate, not legally binding)