Closed type of line marking device

Details Closed type of line marking device Closed type of line marking device

1988-12-02

1990-05-22

Haroian, Harry N.

Geometrical instruments

Straightedge type

Cord type

G01B 302

Patent

active

049265628

ABSTRACT:
A closed type device for line marking comprises a box-shaped body and a circular partition wall dividing the inner space of the body into a space for a bobbin seat and a closed space surrounding the outer surface of partition wall for the storage of Chinese dark ink as an ink space. The ink space is stuffed with an ink absorbent material and the bobbin seat is adapted to receive the bobbin in concealed manner. A flexible thread of absorbent material is wound onto the bobbin. The closed ink space prevents the ink from leaking out of the line marking device. The closed arrangement for the body and bobbin make the device easy to operate and convenient to carry by the user.

REFERENCES:
patent: 517720 (1894-04-01), Anderson
patent: 1271470 (1918-07-01), Ibaraki
patent: 4773162 (1988-09-01), Lin

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