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Individual
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Individual
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Priority to ES1968141920UpriorityCriticalpatent/ES141920Y/en
Publication of ES141920UpublicationCriticalpatent/ES141920U/en
Application grantedgrantedCritical
Publication of ES141920YpublicationCriticalpatent/ES141920Y/en
Adjustable spring for doors, essentially characterized, comprising a helical spring (4), which fits freely in the cylindrical extension (2) of the sleeve (1), near whose end has a pin (3), which runs through inclined, according to the pitch of the thread, protruding on both sides and whose other end of the spring, has a diametral fold (5), for threading thanks to the two pins, (10), parallel to the axis, which has on its internal face the another sleeve (9), which covers the end of the external tube (8); by comprising an inner tube (7), which covers the spring (4), one of its ends covering the sleeve (1); for presenting the faces or external bases of both sleeves, a concavity (6), in its center; to comprise gripping plates (11), provided with suitable holes and having at one end a strong hook, curved at about 45º and whose end tip (12), contacts the center of the cavity (6), a platen (11) against each end cuff. (Machine-translation by Google Translate, not legally binding)
ES1968141920U1968-09-281968-09-28
ADJUSTABLE SPRING FOR DOORS.
ExpiredES141920Y
(en)