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US 5,371,952 AGranted
Drafting machine
OwnerCurtis Williamsinventor
Life of this patent
Estimating the term…
Abstract
A pan and channelled drawing board combination comprising a transparent drawing surface channelled on two or more sides and pivotally attached at one corner to the upper surface of the lip of the pan and having a surface support attached to the bottom of the pan.
Claims3
A drafting machine comprising:
- a drawing board having four edges;
- a continuous channel positioned adjacent three of said edges, said continuous channel defining a core in said drawing board;
- a pan having four edges corresponding to the edges of said drawing board;
- means on said pan for supporting said drawing board;
- a straight edge having stud means located thereon for riding in said continuous channel;
- and
- support means attached to said pan for supporting said core.
4 more elements
Dependencies are inferred from the claim text.