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.)
Hunter Douglas NV
Original Assignee
Hunter Douglas NV
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 Hunter Douglas NVfiledCriticalHunter Douglas NV
Priority to ES0300333ApriorityCriticalpatent/ES300333A3/en
Publication of ES300333A3publicationCriticalpatent/ES300333A3/en
Cylinder system or spring roller, characterized by comprising a pair of tubes housed one inside the other, spaced and arranged concentrically; a hollow coiled spring and disposed in the annular space comprised between said tubes; means for joining the detached end of said spring to the inner tube; means for repressing said inner tube against rotation; spacer means interposed between the apart end of said inner tube and the corresponding end of the outer and bearing means for the opposite ends of said outer tube. (Machine-translation by Google Translate, not legally binding)
ES0300333A1964-05-271964-05-27Cylinder system or spring roller system (Machine-translation by Google Translate, not legally binding)
ExpiredES300333A3
(en)