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Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments
(AREA)
Abstract
Retractable device for pens, which is characterized by being a support piece in the form of a cylindrical bushing, provided with an internal rim on its upper base and two diametrically opposed notches, of different and suitable depth, on the opposite lower base, whose bushing it has axially and successively mounted a push button, protruding from the base of the inner flange and a stem, on which it sits, with end lateral guides coupled in the notches of the bushing and a central pin on the external base, by whose periphery is retained in its protruding position by means of suitable flanges of the corresponding base of the bushing, the shank having a deep longitudinal notch in which it plays, pivoting by trunnions that seat in two transverse grooves provided in the walls thereof, a piece in the form of a double anchor , whose nails are inserted alternately in the notches of the cas Quillo, determining the extreme positions of work and rest, respectively, of the writing element of the ballpoint pen, when operated by the push button under the elastic action of a spring that is arranged around the shank of the shank when mounting the device in the pen. (Machine-translation by Google Translate, not legally binding)
ES82686U1960-08-091960-08-09
Retractable device for pens
ExpiredES82686Y
(en)