Typewriting machines – Including interposed inking device for record-medium – Endless ribbon or cartridge therefor
Patent
1987-05-11
1989-02-21
Burr, Edgar S.
Typewriting machines
Including interposed inking device for record-medium
Endless ribbon or cartridge therefor
400679, 400719, 137 43, 164234, 220205, 220 85VS, 222189, B41J 3200, B65D 5116
Patent
active
048060321
ABSTRACT:
A conical vent (14) for a cartridge (10) is located on an inner surface (20) of the cartridge. The conical vent includes a conical-shaped member (26) having a base (28) and an apex (30). An opening (32) extends through the center of the conical-shaped member (26) to provide an air passage for a cartridge (10). The opening (32) is adapted to create a capillary force on a small amount of liquid (59) that might enter the opening to prevent any remaining liquid from leaking through the opening. The vent also includes a groove or capillary trap (34) that encircles the base of the conical-shaped member. Also, a pair of upright walls (36) and (38) surround the conical-shaped member and cooperate with the capillary trap to divert liquid to the base of the conical-shaped member and away from its apex. A second conical-shaped member (52) integral with an outer surface (22) of the cartridge can be positioned directly opposite the first-mentioned conical-shaped member to help create and maintain the capillary force created in the opening (32). Another capillary trap (56), extending around the second conical-shaped member, traps any liquid that might escape through the opening.
REFERENCES:
patent: 2456337 (1948-12-01), Soper
patent: 2720666 (1956-11-01), Knight
patent: 2807064 (1957-09-01), Jay
patent: 3910302 (1975-10-01), Sadlir
patent: 4195682 (1980-04-01), Muller
patent: 4399009 (1983-06-01), Kanagai et al.
patent: 4632174 (1986-12-01), Renel
IBM Tech. Disc. Bulletin, "Tubeaxial Fan Airflow Deflector", vol. 28, No. 10, Mar. 1986, p. 4367.
Fong Jon J.
Gragg Brian D.
Wilson Arthur K.
Bethurum William J.
Burr Edgar S.
Hewlett--Packard Company
McDaniel James R.
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