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Priority to ES83777UpriorityCriticalpatent/ES83777Y/en
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Publication of ES83777YpublicationCriticalpatent/ES83777Y/en
Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments
(AREA)
Abstract
"PERFECTED RETRACTABLE WRITING ELEMENT DRIVE DEVICE" characterized in that a cylindrical piece is housed inside a hollow part in the form of a cap coupled to the end of the body of the writer element, the end of which protrudes from the part upper part of the cap to constitute a push-button actuator, whose cylindrical part has in its part housed inside the cap a low relief, in the form of a groove that follows a closed circuit whose layout resembles the figure of a heart, there being a small independent spherical piece that is simultaneously housed in said groove and in another of circular shape constituted by the space existing between the rear end of the body of the writer element and a circular internal projection of the cap, whereby the spherical piece locks the cylindrical part internal always pressed by the recoil spring that pushes it out to tr opposite of the retractable writer in the two retracted and writing positions, when said spherical piece lodges in the lower vertex of the groove or in the upper middle apex. (Machine-translation by Google Translate, not legally binding)
ES83777U1960-10-261960-10-26
Improved retractable writing element drive
ExpiredES83777Y
(en)