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.)
Res Engneerng & Manufacturing Inc
Original Assignee
Res Engneerng & Manufacturing Inc
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 Res Engneerng & Manufacturing IncfiledCriticalRes Engneerng & Manufacturing Inc
Priority to ES83344UpriorityCriticalpatent/ES83344Y/en
Publication of ES83344UpublicationCriticalpatent/ES83344U/en
Application grantedgrantedCritical
Publication of ES83344YpublicationCriticalpatent/ES83344Y/en
A self-tightening element comprising a main part of the shank which includes an end portion in the bore of the work piece in which the element has to form a thread when advancing therein, said element including a thread that begins in the free end of said end portion and extends at least part of its way along said main spigot part, while the straight section of the threaded part of said element, at least in said spigot part, taken at least along the diameter at the root, it has a shape that approximates that of an equilateral triangle with arched sides, each with respect to a center located in a radius that leaves the axis of the element passing through the intersection of the other two sides. (Machine-translation by Google Translate, not legally binding)
ES83344U1960-10-031960-10-03
Self-tapping element
ExpiredES83344Y
(en)