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Tejidos De Punto S A
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Tejidos De Punto S A
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Priority to ES0086580UpriorityCriticalpatent/ES86580Y/en
Publication of ES86580UpublicationCriticalpatent/ES86580U/en
Application grantedgrantedCritical
Publication of ES86580YpublicationCriticalpatent/ES86580Y/en
Details Of Spanners, Wrenches, And Screw Drivers And Accessories
(AREA)
Abstract
An improved retaining device for screwdrivers, characterized by having, fixed to the end of the shaft of the screwdriver itself, a hollow cylindrical body for the most part and ending in a flattened front edge in the form of a narrow wedge provided with a central notch, in the inside of which a movable piece carrying a prismatic appendix projecting to the outside is disposed through the aforementioned notch and a helical spring, fixed at its straight ends to said moving part and to the end of the aforementioned stem, and to exist outside the body cylindrical, a collar secured to the internal moving part by means of a captive screw, guided between the flanks of an inclined groove, made in the wall of that cylindrical body. (Machine-translation by Google Translate, not legally binding)