Coating implements with material supply – Solid material for rubbing contact or support therefor – Cushioned tool
Patent
1979-06-04
1981-08-04
Pieprz, William
Coating implements with material supply
Solid material for rubbing contact or support therefor
Cushioned tool
401 65, 401 80, B43K 2122, B43K 2116
Patent
active
042819393
ABSTRACT:
A mechanical pencil wherein a lead is propelled through a lead insertion tube provided at the forward end of the pencil body by the propulsion of a lead sustaining and feeding mechanism consisting of a chuck and the like, the mechanical pencil also having a lead protective device wherein a thin film made of an elastic material, such as rubber, synthetic resin or the like, is provided over the whole length of the inner surface of the lead insertion tube so that the lead is permitted to pass therethrough with ease, the elastic thin film being adapted to have a relatively greater thickness at the forward end part of the lead insertion tube so as to form a lead sustaining portion, the elasticity of the lead sustaining portion precluding the lead from slipping out due to own weight when released from the lead sustaining and feeding mechanism thereby minimizing the loss of lead.
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