Propelling pencil with cushion sleeve

Details Propelling pencil with cushion sleeve Propelling pencil with cushion sleeve

1990-08-09

1991-04-23

Bratlie, Steven A.

Coating implements with material supply

Solid material for rubbing contact or support therefor

Including means to advance material

401 54, 401 94, B43K 2100, B43K 2122

Patent

active

050095331

ABSTRACT:
A knock-type propelling pencil includes a lead pipe inserted into an outer cylinder and having a lead chuck at the end portion thereof, a chuck-fastening tube for fastening the lead chuck, a cushion sleeve coming into contact with the chuck-fastening tube and being slidable relative to the outer cylinder, and being urged by a spring. The cushion sleeve has a cushion portion which can be resiliently deformed to absorb excessive writing pressure and thereby preventing breaking of the lead.

REFERENCES:
patent: 3864046 (1975-02-01), Butka
patent: 3917418 (1975-11-01), Lanoie
patent: 3947133 (1976-03-01), Kageyama et al.
patent: 4171170 (1979-10-01), Kageyama et al.
patent: 4240759 (1980-12-01), Matsumoto et al.
patent: 4371277 (1983-02-01), Kageyama et al.
patent: 4386865 (1983-06-01), Kageyama et al.

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