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US 10,843,502 B2Granted
Writing instrument side-knock mechanism
AssigneeSanford, L.P.
InventorsKenneth Swanick, Bryan Rolfs
Life of this patent
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Abstract
A side-knock type mechanical pencil comprising a body with a side-mounted knock button coupled to the body of the mechanical pencil and adapted to slidingly engage with a lead tube with a frustoconical hub for translating the motion of the knock button actuation to linear extension of the lead.
Claims20
A writing instrument, comprising:
- a body;
- a knock button coupled to the body, the knock button comprising:
- a first end,
- a pivot end opposite the first end,
- a top surface configured to be pressed by the user to actuate the knock button and cycle the writing instrument,
- a bottom surface opposite the top surface, and
- a sliding surface extending between the first end and the bottom surface;
- and
- a frustoconical hub disposed such that at least a portion of the sliding surface of the knock button slides along the frustoconical hub when the knock button is actuated.
6 more elements
Dependencies are inferred from the claim text.