Mechanical pencil with improved slider mechanism

Details Mechanical pencil with improved slider mechanism Mechanical pencil with improved slider mechanism

1994-02-16

1995-10-31

Bratlie, Steven A.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including means to advance material

401 81, B43K 2122, B43K 2116

Patent

active

054623766

ABSTRACT:
A slider mechanism of a mechanical pencil is capable of fixing its lead guide at positions of its projection and withdrawal. The slider mechanism comprises a slider fixing the lead guide, the slider being provided with a sliding member sliding on the internal peripheral surface of a point member, a projection provided on the rear end of the external peripheral surface of the sliding member, and grooves provided on the internal peripheral surface of the point member, the grooves being engaged with the projection at positions of the lead guide's projection from and withdrawal into an aperture on the tip of the point member. The projecting position of the lead guide in a writing state and the withdrawal position in a housing state are securely maintained.

REFERENCES:
patent: 4504163 (1985-03-01), Hashimoto et al.
patent: 4714365 (1987-12-01), Kageyama et al.
patent: 4884910 (1989-12-01), Kageyama et al.
patent: 4896982 (1990-01-01), Kageyama et al.
patent: 4955739 (1990-09-01), Kageyama et al.
patent: 4957384 (1990-09-01), Kageyama et al.

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