Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to advance material
Patent
1988-05-10
1990-12-11
Bratlie, Steven A.
Coating implements with material supply
Solid material for rubbing contact or support therefor
Including means to advance material
401 87, 401 94, B43K 2122
Patent
active
049765604
ABSTRACT:
A mechanical pencil with a chuck made of plastics includes a lead case connected with the chuck, a ring arranged to surround and hold the chuck, and a spring for biasing the chuck toward a position where it is engaged with the ring, all of which are disposed within a tubular housing. The plastic chuck includes a cylindrical tube connected with the lead case and three elastically deformable extensions integral therewith. Each of these extensions has an engaging portion for grasping a lead and a connecting portion whose inner surface axially forms a curve of secondary degree extending from the cylindrical tube and expanding radially toward the engaging portion in its free state, so that the engaging portion aligns with the lead when it is engaged with the ring. Accordingly, a grasping force is uniformly applied around the lead.
REFERENCES:
patent: 2473149 (1949-06-01), Juelss
patent: 2823644 (1958-02-01), Den Bussche et al.
patent: 2845898 (1958-08-01), Stanek
patent: 3001510 (1961-09-01), Chelazzi
patent: 3998558 (1976-12-01), Katz
patent: 4106874 (1978-08-01), Torii
patent: 4140408 (1979-02-01), Mizutani
patent: 4230413 (1980-10-01), Gartner
patent: 4490061 (1984-12-01), Katz
patent: 4619539 (1986-10-01), Kageyama
Bratlie Steven A.
The Sailor Pen Co. Ltd.
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