US3685156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drafting set for drawing a body in parallel perspective
Assignee: Individual
•
Filing: 1970-09-09
•
Granted: 1972-08-22
•
Expires: 1990-09-09
Abstract
Abstract A drafting set for drawing a body in parallel perspective, of which the coordinate of height is vertical, the coordinate of length forms an angle of Alpha * with the horizontal and the coordinate of width forms an angle of Beta * with the horizontal in the drawing plane. The drafting set consists of a pair of angle rulers adapted to one another. The first angle ruler has a guiding edge by means of which it displaceable parallel to itself and vertically on a drawing surface, and a straight locating edge for the second angle ruler and forming an angle of Alpha * with the horizontal. The second angle ruler possesses a first drawing edge for the presentation of height lines, a second drawing edge forming an angle of Alpha + 90* with the first drawing edge for the presentation of width lines and a third drawing edge for the presentation of length lines forming an angle of Alpha + Beta * with said second drawing edge.
Inventors
- 👤 Karl-Heinz Arkenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:31
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/14; B43L13/141; B43L13/146
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
195 words
A drafting set for drawing a body in parallel perspective on a drawing surface, wherein the coordinate of height is vertical, the coordinate of length forms an angle of Alpha * with the horizontal and the coordinate of width forms an angle of Beta * with the horizontal in the drawing plane, said drafting set comprising: a. a first angle ruler and a second angle ruler adapted to be used in combination with one another, b. the first angle ruler including a guide means in combination with the drawing surface for displacement of said first angle ruler parallel to itself and vertical with respect to the drawing surface, and a straight locating edge provided for the second angle ruler and forming an angle of Alpha * with the horizontal of the drawing surface, and c. the second angle ruler including a first drawing edge for the drawing of height lines, a second drawing edge forming an angle of Alpha +90* with the first drawing edge for the drawing of width lines, and a third drawing edge for the drawing of length lines forming an angle of Alpha + Beta * with said second drawing edge.
Claim 2
Dependent Claim
195 words
A drafting set for drawing a body in parallel perspective on a drawing surface, wherein the coordinate of height is vertical, the coordinate of length forms an angle of Alpha * with the horizontal and the coordinate of width forms an angle of Beta * with the horizontal in the drawing plane, said drafting set comprising: a. a first angle ruler and a second angle ruler adapted to be used in combination with one another, b. the first angle ruler including a guide means in combination with the drawing surface for displacement of said first angle ruler parallel to itself and vertical with respect to the drawing surface, and a straight locating edge provided for the second angle ruler and forming an angle of Alpha * with the horizontal of the drawing surface, and c. the second angle ruler including a first drawing edge for the drawing of height lines, a second drawing edge forming an angle of Alpha +90* with the first drawing edge for the drawing of width lines, and a third drawing edge for the drawing of length lines forming an angle of Alpha + Beta * with said second drawing edge.
Claim 3
Dependent Claim
28 words
A drafting set as defined in claim 1 wherein the first, second and third drawing edges of the second angle ruler are outer edges of said angle ruler.
Claim 4
Dependent Claim
26 words
A drafting set as defined in claim 1 wherein at least one of the edges of the second angle ruler is provided with a measuring scale.
Claim 5
Dependent Claim
58 words
A drafting set as defined in claim 1 wherein the second angle ruler includes a fourth drawing edge for the drawing of a long axis of an ellipse on said body, and said fourth drawing edge forms an angle of Beta * with the second drawing edge and an angle of Alpha * with the third drawing edge.
Claim 6
Dependent Claim
31 words
A drafting set as defined in claim 4 wherein the second angle ruler includes an elongated slot, and one of the longitudinal edges of said slot forms said fourth drawing edge.
Claim 7
Dependent Claim
57 words
A drafting set as defined in claim 1 wherein the angles and Beta equals 30*, at least one of the two angle rulers is provided with a drawing edge for the drawing of a long axis of an ellipse on said body, and said drawing edge extends perpendicular to the locating edge of the first angle ruler.
Claim 8
Dependent Claim
41 words
A drafting set as defined in claim 1 wherein the first angle ruler guide means includes a guide edge, and the first angle ruler includes a lower drawing edge which intersects said guide edge and extends downwardly from said guide edge.
Claim 9
Dependent Claim
42 words
A drafting set as defined in claim 1 wherein the straight locating edge of the first angle ruler is provided with a measuring scale, and the zero point of said measuring scale being located approximately at the center of said locating edge.
Claim 10
Dependent Claim
59 words
A drafting set in accordance with claim 8 wherein the first and second drawing edges of the second angle ruler are of equal length, a stop is provided on the locating edge of the first angle ruler for supporting the second angle ruler, and said stop being positioned from the zero point at a distance equal to said length.
Claim 11
Dependent Claim
41 words
A drafting set as defined in claim 1 wherein the drawing surface includes a drafting machine with a drawing head, and the first angle ruler is provided with a means for attaching the ruler to the head of the drafting machine.
Claim 12
Dependent Claim
27 words
A drafting set as defined in claim 1 wherein the second angle ruler includes a securing means for attaching the second angle ruler to the drafting surface.
Claim 13
Dependent Claim
15 words
A drafting set as defined in claim 11 wherein the securing means includes a magnet.
Claim 14
Dependent Claim
23 words
A drafting set as defined in claim 1 wherein at least one of the angle rulers is provided with a horizontal drawing edge.
Claim 15
Dependent Claim
28 words
A drafting set as defined in claim 13 wherein the angle ruler includes an elongated horizontal slot, and one edge of said slot forms the horizontal drawing edge.
Claim 16
Dependent Claim
34 words
A drafting set as defined in claim 14 wherein a second slot intersects the elongated horizontal slot, and the second slot forms an angle of Alpha + Beta * with the elongated horizontal slot.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |