Method for the manufacture of writing instruments

Details Method for the manufacture of writing instruments Method for the manufacture of writing instruments

1975-03-20

1977-01-18

Whitby, Edward G.

Coating implements with material supply

Including stylus

Axially movable by pressure on work surface

29520, 156 731, 156294, 228 1R, 228110, 228262, 264 69, 264249, B32B 3122

Patent

active

040036650

ABSTRACT:
A stylus is assembled from a plastic tip having an axial bore and an ink tube in said bore centered therein and welded thereto. Ultrasonic welding is used for softening and partially melting the tip. On switching off the ultrasonic energy source, the molten portion of the tip hardens and provides a strong bond between the tip and the ink tube.

REFERENCES:
patent: 3436803 (1969-04-01), Sarnoff
patent: 3455639 (1969-07-01), Danjczek
patent: 3512897 (1970-05-01), Riepe
patent: 3705380 (1972-12-01), Roberts et al.
patent: 3728184 (1973-04-01), Burke et al.
patent: 3739468 (1973-06-01), Hill
patent: 3836062 (1974-09-01), Tsunoda et al.

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