Line-marking tool
OwnerJames McTagueinventor
Life of this patent
Estimating the term…
Abstract
The line-marking tool attaches to a pad of paper. The line-marking tool comprises an anchored straight edge, a rotating straight edge, and a slewing bearing. The slewing bearing attaches the rotating straight edge to the anchored straight edge. The anchored straight edge attaches to the pad of paper such that the position of the anchored straight edge relative to the top sheet of the pad of paper is fixed. The anchored straight edge and the rotating straight edge are used to draw straight lines on the top sheet. The slewing bearing adjusts the cant of the rotating straight edge relative to the anchored straight edge such that a cant is formed between a line drawn using the rotating straight edge and a line drawn using the anchored straight edge. The slewing bearing is calibrated to form a precise angle of cant on the top sheet.
Claims18
A drafting tool comprising:
- an anchored straight edge, a rotating straight edge, and a slewing bearing;
- wherein the slewing bearing attaches the rotating straight edge to the anchored straight edge;
- wherein the drafting tool is configured for use with a drafting instrument;
- wherein the anchored straight edge is used to draw straight lines on a top sheet;
- wherein the rotating straight edge is used to draw straight lines on the top sheet;
- wherein the drafting tool is configured for use with a pad of paper;
- wherein the pad of paper is further defined with the top sheet;
- wherein the drafting tool attaches to the pad of paper;
- wherein the anchored straight edge attaches to the pad of paper such that the position of the anchored straight edge relative to the top sheet of the pad of paper is fixed;
- wherein the rotating straight edge comprises a rectangular plate, a first notch, and a second notch;
- wherein the first notch is formed in the rectangular plate;
- wherein the second notch is formed in the rectangular plate;
- wherein the rectangular plate is further defined with a first primary edge, a second primary edge, a first lateral edge, and a second lateral edge;
- wherein the first notch is a negative space formed through the rectangular plate;
- wherein the second notch is a negative space formed through the rectangular plate;
- wherein the first notch has the shape of a circular section;
- wherein the second notch has the shape of a circular section;
- wherein the first primary edge of the rectangular plate aligns with a bifurcating line of the circular section that forms the first notch;
- wherein the second primary edge of the rectangular plate aligns with a bifurcating line of the circular section that forms the second notch.
Dependencies are inferred from the claim text.