Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to advance material
Patent
1977-08-15
1979-02-20
Crowder, Clifford D.
Coating implements with material supply
Solid material for rubbing contact or support therefor
Including means to advance material
401 87, 401 89, 401 94, B43K 2122
Patent
active
041404084
ABSTRACT:
A push type mechanical pencil having an inner cylinder made of a synthetic resin including a chuck portion and a spare leads containing tube portion communicating with the chuck portion. An integrally molded inner cylinder unit is provided which has a hollow cylindrical body constituting a part of the spare leads containing tube portion, a plurality of longitudinally extending tube forming members which when they are placed together constitute the remaining part of the spare leads containing tube portion, and a plurality of longitudinally separated chuck members which when they are put together constitute the chuck portion. The tube forming members are integrally connected with each other by means of at least a bendable connector portion, and one of the tube forming members is integral with the hollow cylindrical body. Each of the separate chuck members is integral a corresponding one of the tube forming members. The inner cylinder is provided on the outer surface thereof with at least one protrusion, and a barrel is provided on an inner surface thereof with an annular projection. The protrusion and the projection engage each other when the inner cylinder is mounted in the barrel.
REFERENCES:
patent: 1291671 (1919-01-01), Roll
patent: 1296011 (1919-03-01), Roll
patent: 3945733 (1976-03-01), Edel
Crowder Clifford D.
Pentel Kabushiki Kaisha
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