US PATENT SUBCLASS 401 / 221
BIFURCATE POINTED NIB TOOL (E.G., FOUNTAIN PEN)

Current as of: June, 1999
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401 /   HD   COATING IMPLEMENTS WITH MATERIAL SUPPLY

221BIFURCATE POINTED NIB TOOL (E.G., FOUNTAIN PEN) {3}
222  DF  .~> Including reservoir and feeder {14}
252  DD  .~> Attached coating material retainer feeding directly to tool {2}
256  DD  .~> Broad face, adjustable gap tool (e.g., ruling pen) {1}

DEFINITION

Classification: 401/221

(under the class definition) Implement wherein the tool* terminates in only two elements, said elements being separated by a relatively narrow slit or interspace, to provide a capillary passage for material, and having closely adjacent work-engaging surfaces of relatively small dimension in either direction.

(1) Note. The tool elements may be integral extensions from a common shank or separate members joined in cooperative relation by a separate fastening means.

(2) Note. A patent for a bifurcate pointed nib pen wherein the sole material supply is retained in direct feeding relation to the tool by integral formations of the tool (e.g., infolded wings) will be placed in this subclass rather than in any subclass indented hereunder.

(3) Note. An implement wherein the tool comprises a tubular feed channel and no more than one relatively thin and rigid work-engaging element (e.g., wire) extending therethrough will be considered a stylos:graphic pen for subclasses 258+. Where the number of elements extending from a feed channel exceeds two, the implement will be considered a brush for subclasses 268+.

Where the element or elements so extending has significant length in one or more directions along its work-contacting surface, the implement will be considered to have a bladelike or padlike tool (e.g., lettering pin) for subclasses 261+; see, however, (2) Note under the definition of subclass 261.

(4) Note. A patent for a bifurcate, pointed nib tool, per se, having no feature which adapts it particularly for association with supply means, will be placed in Class 15, subclasses 446 and 447. However, a patent claiming such a tool in combination with a holder (e.g., "barrel") which holder is disclosed as containing or providing supply means, will be placed in this or an indented subclass, even though no detail of the supply means is claimed. SEE OR SEARCH THIS CLASS, SUBCLASS:

118, for the combination of an inkwell and a pen separable therefrom for use; and see the search notes thereto for the loci of patents to inkwells, per se.

258+, for an implement of this class including a stylus.

261+, for an implement of this class including a blade-like or pad-like tool.

268+, for an implement of this class including a brush type tool.

SEE OR SEARCH CLASS

15, Brushing, Scrubbing, and General Cleaning,

134+, for an invention in the detail(s) of a bifurcate nib tool.