Lead cartridge with an openable capping structure

Details Lead cartridge with an openable capping structure Lead cartridge with an openable capping structure

1989-05-12

1991-03-12

Cuomo, Peter M.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including means to advance material

401 65, 401 89, B43K 2100

Patent

active

049988379

ABSTRACT:
A lead cartridge for a mechanical pencil, provided with an openable capping structure. The openable capping structure is fixedly joined to the open end, namely, the front end, of the lead cartridge so as to engage the lead guide of the mechanical pencil when the lead cartridge is inserted in the mechanical pencil. The openable capping structure opens a lead passage formed therein when engaged with the lead guide and closes the lead passage when separated from the lead guide to prevent the leads contained in the lead cartridge falling off the lead cartridge.

REFERENCES:
patent: 1592502 (1926-07-01), Pollak
patent: 2184911 (1939-12-01), Fend
patent: 2626592 (1953-01-01), Hedler
patent: 4269524 (1981-05-01), Hashimoto
patent: 4275971 (1981-06-01), Katz
patent: 4500220 (1985-02-01), Hashimoto
patent: 4583874 (1986-04-01), Kageyama
patent: 4603990 (1986-08-01), Yamamoto
patent: 4619539 (1986-10-01), Kageyama
patent: 4659242 (1987-04-01), Katz
patent: 4836703 (1989-06-01), Kageyama et al.

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