Mechanical pencil

Details Mechanical pencil Mechanical pencil

1979-04-10

1981-06-30

Coven, Edward M.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including means to advance material

401 65, B43K 2100

Patent

active

042759714

ABSTRACT:
A mechanical pencil in which a tubular casing is formed with a lead-guiding passage which has a leading end open outwardly away from the casing. A lead is advanced through the passage by a collet movable between a first position in which the lead is clamped and a second position in which the lead is released. An element normally presses the lead, when the latter is in the passage, against an inner surface of the passage for preventing undesirable sliding of the lead along the passage when the collet releases the lead.

REFERENCES:
patent: 1234666 (1917-07-01), Holmes
patent: 1488385 (1924-03-01), BeWitt
patent: 1839897 (1932-01-01), Savoie
patent: 2166751 (1939-07-01), Cooper
patent: 2503080 (1950-04-01), Fefft et al.
patent: 2533513 (1950-12-01), Savoie
patent: 2627842 (1953-02-01), Russell
patent: 3836265 (1974-09-01), Kapilow
patent: 3947133 (1976-03-01), Kageyama et al.

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