ES329962A3 - Improvements in the construction of perforating screws for sheet. (Machine-translation by Google Translate, not legally binding)
- Google Patents
Improvements in the construction of perforating screws for sheet. (Machine-translation by Google Translate, not legally binding)
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.)
Thyssen Schraubenwerke GmbH
Original Assignee
Thyssen Schraubenwerke GmbH
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Publication date
Application filed by Thyssen Schraubenwerke GmbHfiledCriticalThyssen Schraubenwerke GmbH
Priority to ES0329962ApriorityCriticalpatent/ES329962A3/en
Publication of ES329962A3publicationCriticalpatent/ES329962A3/en
Improvements in the construction of perforating screws for sheet metal, which have a threaded part of constant thread height and a drilling tip provided with longitudinal grooves, characterized in that the threaded part of constant thread height is succeeded by a part, whose diameter is threaded it gradually decreases towards the tip of the screw, because it is followed by a rod without thread, in which the aforementioned parts do not have any longitudinal groove and because of the piercing tip provided with at least one longitudinal groove. (Machine-translation by Google Translate, not legally binding)
ES0329962A1966-08-061966-08-06Improvements in the construction of perforating screws for sheet. (Machine-translation by Google Translate, not legally binding)
ExpiredES329962A3
(en)
Device of adjustment of the user in the portautiles, especially for barrels of drilling. (Machine-translation by Google Translate, not legally binding)