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US 5,239,315 AGranted
Penstocker of automatic drafting machine
AssigneeMutoh Industries Ltd.
InventorIsamu Takahashi
Life of this patent
Estimating the term…
Abstract
A penstocker for an automatic drafting machine in which a shutter 15 is slidably mounted on a peripheral wall 13b of the penstocker's main body 10 such that a desired one or more slits 20, 21 and 22, formed on the peripheral wall 13b, are shielded thereby forming a predetermined pattern indicative of a presence or absence of the penstocker main body, a type of pen held by the penstocker main body and an origin of the penstocker main body.
Claims3
A penstocker for an automatic drafting machine, said penstocker comprising:
- a rotary penstocker main body;
- a plurality of slits provided along a peripheral wall of said penstocker main body;
- a light transmitting, object detecting sensor for detecting said plurality of slits;
- and
- a shutter, slidably mounted on said peripheral wall so as to shield a predetermined slit or slits thereby encoding penstocker information including a presence or absence of the penstocker main body, an origin of the penstocker main body and a kind of pen or pens held by said penstocker main body.
2 more elements
Dependencies are inferred from the claim text.