Fluid dispensing instruments having barbed nib holders

Details Fluid dispensing instruments having barbed nib holders Fluid dispensing instruments having barbed nib holders

B - Operations, Transporting

43

K

B43K 3/00 (2006.01) B43K 8/02 (2006.01)

Patent

CA 2059772

1162-5 ABSTRACT OF THE DISCLOSURE Fluid dispensing instrument, such as a writing instrument, comprising a nib holder and a nib. The nib holder comprises a generally cylindrical inner wall disposed between its front and back ends, having an opening at one end to receive a nib. Stops limit the depth of axial insertion of a nib through the opening. Barbs prevent axial withdrawal of a nib from the opening. The nib comprises a fluid dispensing tip defining its front end and a body made at least in part of resilient material defining its back end. When the writing instrument is assembled, the body is engaged by and resiliently deformed between the barb means and stop means. Also, a method of permanently securing a nib in the nib holder of a fluid dispensing instrument, comprising the steps of inserting the nib in the nib holder through the opening until an abutment of the nib engages a stop of the nib holder, applying an insertion force sufficient to compress the resilient part of the nib and thus move at least part of the nib axially in the nib holder, and removing the insertion force. When the insertion force is removed, the compressed part of the nib relaxes and the part of the nib which previously moved axially in one direction moves axially the other way. When this happens the barb of the nib holder engages and digs into the moving part of the body. Some residual tension will remain in the body after the insertion force is removed if the barbs engage sufficiently to prevent further axial movement of the nib body before the compressed resilient portion of the nib is fully relaxed.

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