Coating implements with material supply – Plural tools including projectable and retractable tool – Single actuator for simultaneous projection of one tool and...
Patent
1979-09-10
1981-05-19
Coven, Edward M.
Coating implements with material supply
Plural tools including projectable and retractable tool
Single actuator for simultaneous projection of one tool and...
401 32, B43K 2714
Patent
active
042681839
ABSTRACT:
A composite writing instrument composed of two writing units such as two ball point and pen units which has a lower tubular casing accommodating therewithin two writing units and an upper tubular casing accommodating a cam mechanism therewithin which is rotatable about the axis of the casing for advancing the two writing units to a writing position through an opening at the tip of the lower tubular casing or for retracting the units to a holding position within the lower tubular casing. The cam mechanism is rotatable around the axis of the lower tubular casing as well as being engageable with both of the two writing units respectively for shifting the writing units in the axial direction, and the mechanism includes a guide casing having lengthwise grooves thereon and a curved casing accommodating the guide casing therewithin.
REFERENCES:
patent: 3266465 (1966-08-01), Ganz
patent: 3274976 (1966-09-01), Levoin
patent: 3814524 (1974-06-01), Sperti
patent: 3898008 (1975-08-01), Ganz
patent: 3989389 (1976-11-01), Hashimoto et al.
patent: 4080077 (1978-03-01), Schumacher
Coven Edward M.
Zebra Co. Ltd.
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