Permanent-magnetically held closure cap for writing instruments

Details Permanent-magnetically held closure cap for writing instruments Permanent-magnetically held closure cap for writing instruments

1977-02-22

1979-09-18

Crowder, Clifford D.

Coating implements with material supply

Bifurcate pointed nib tool

Including reservoir and feeder

401213, 220230, 2922515, 335306, B43K 900

Patent

active

041681290

ABSTRACT:
A closure cap which is held on writing instruments by a permanent magnet connected to the cap. The permanent magnet is arranged near the closed end of the cap, has a nearly cylindrical cross section, and has pole shoes on its pole faces, the free ends of the pole faces engaging ferro-magnetic annular parts of the writing instrument when the cap is placed on the latter.

REFERENCES:
patent: 2438231 (1948-03-01), Schultz et al.
patent: 2949569 (1960-08-01), Pierce et al.
patent: 3009225 (1961-11-01), Budreck
patent: 3093113 (1963-06-01), Reynoso
patent: 3141214 (1964-07-01), Bey
patent: 3400349 (1968-09-01), Harra

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