Coating implements with material supply – Material flows through porous tool – With removable cap for tool
Patent
1989-10-03
1991-03-19
Apley, Richard J.
Coating implements with material supply
Material flows through porous tool
With removable cap for tool
401213, 401243, B43K 500
Patent
active
050006045
ABSTRACT:
A removable cap attached to a writing instrument in an insertion manner for preventing ink from evaporating from the writing instrument, comprises: a partially double-walled cylindrical cap main body having its opposite axial ends opened and its rear portion double-walled to form an inner cylindrical wall and an outer cylindrical wall, the inner cylindrical wall being provided with a plurality of axial slits defining a plurality of axial lands therebetween; and a cylindrical inner cap for hermetically covering a pen-point portion of the writing instrument, the cylindrical inner cap having its front axial end opened and its rear axial end closed, the cylindrical inner cap being supported by the axial lands of the inner cylindrical wall of the cap main body so as to leave rear-end portions of the axial slits of the inner cylindrical wall of the cap main body open, through which rear-end portions of the axial slits the interior of the cap main body communicates with open air.
REFERENCES:
patent: 4844642 (1989-07-01), Inaba et al.
patent: 4915529 (1990-04-01), List
Apley Richard J.
Crosby D. F.
Mitsubishi Pencil Co. Ltd.
Wong James A.
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