31-08-2017 дата публикации
Номер: US20170246903A1
Принадлежит:
A multicolor writing instrument with an automatic return function includes a lower housing having a hollow cylindrical shape; an upper housing connected to an upper portion of the lower housing and formed with locking steps; a clip member hingedly provided on the upper housing so as to be movable about a hinge shaft; a coil spring resiliently installed between the clip member and the upper housing; pen cores filled with at least two different color inks; knobs having ends fitted into the respective pen cores; return springs resiliently installed between the pen cores and the knobs; and a return member formed integrally with the clip member on one side of the hinge shaft and toward the respective knobs. 1{'b': 10', '11, 'a lower housing () having a hollow cylindrical shape and having a nib passing through-hole () formed therethrough at a tip of the lower housing;'}{'b': 20', '10', '21', '22, 'an upper housing () connected to an upper portion of the lower housing () and having guide holes () and locking steps () formed respectively inside the guide holes;'}{'b': 30', '20', '31, 'a clip member () hingedly provided on the upper housing () so as to be movable about a hinge shaft ();'}{'b': 40', '30', '20, 'a coil spring () resiliently installed between the clip member () and the upper housing ();'}{'b': 50', '20', '10, 'pen cores () accommodated in the upper housing () and the lower housing () and filled with at least two different color inks;'}{'b': 60', '21', '50', '61', '22', '62', '63, 'knobs () installed to be slidably moved under guidance of the guide holes () and having ends fitted into the respective pen cores (), each of the knobs having a top locking protrusion () caught by the locking steps () and two unlocking portions (, );'}{'b': 70', '50', '60, 'return springs () resiliently installed between the pen cores () and the knobs (); and'}{'b': 80', '30', '31', '60', '30', '80', '60', '50, 'a return member () formed integrally with the clip member () on one side ...
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