Coating implements with material supply – Solid material for rubbing contact or support therefor – Including means to advance material
Patent
1987-02-25
1988-07-05
Bratlie, Steven A.
Coating implements with material supply
Solid material for rubbing contact or support therefor
Including means to advance material
401 86, 401251, B43K 2108
Patent
active
047550759
ABSTRACT:
An improved writing implement comprising a barrel having multiple spiral grooves in the inner wall thereof so that a guide element of a carrier within the barrel having a single spiral thread thereon is selectively engaged with one of the multiple spiral grooves, a cap rotatably attachable to one end of the barrel including an insert portion having a protruding ring member projecting from the outer surface of the insert portion engageable with a corresponding ring groove in one end of the barrel, an extension on the cap protruding into the barrel and cooperatively engageable with the carrier so that rotation of the cap rotates and drives the carrier axially within the barrel for moving the lead inwardly or outwardly, and a tip having an insert end with multiple spiral projecting threads thereon cooperatively engageable with the sprial grooves in the barrel.
REFERENCES:
patent: 1051033 (1913-01-01), Turner
patent: 1677415 (1928-07-01), Straka
patent: 2332223 (1943-10-01), Hasselquist
patent: 4136980 (1979-01-01), Leem
patent: 4610557 (1986-09-01), Malm
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