Patent US4505041A successfully refreshed from Google Patents.
US4505041A
Expired / Lapsed
US
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Perspective drawing templates
Assignee: Individual
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Filing: 1982-05-25
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Granted: 1985-03-19
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Expires: 2002-05-25
Abstract
Abstract A drafting template having printed thereon a pattern of non-concentric elliptical portions, preferably forming complete ellipses, a vertical measuring line extending upwardly from a common point for the pattern or from a base point for the vertical measuring line, and a horizon line mounted at a scaled height above the base point and being parallel to the major axes of the elliptical portions or ellipses. The pattern is a perspective view of concentric circles or portions thereof taken at a scaled distant station point and scaled height above the plane for the circles. The horizon line is mounted at a scaled height above the base point. By selecting one or more vanishing points on the horizon (line), and drawing lines on an overlaying drafting sheet correlated to the base point between the vanishing point(s) and base point, such drawing lines intersecting the elliptical portions or ellipses, a lined grid field can be ultimately produced on the drafting sheet. It is from this grid field that a visually accurate perspective view of an area can be structured. A wide variety of series of templates including different scales and different values for the parameters of the template can be produced.
Inventors
- 👤 Bill H. Keeney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:06
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/14; B43L13/141; B43L13/20; B43L13/201; B43L13/205
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
156 words
A template for producing a lined grid field on an overlaying drafting sheet and from which production a visually accurate perspective view is structured on the drafting sheet and comprising a sheet of material having physical boundaries, a pattern of portions on non-concentric ellipses mounted on said sheet within its physical boundaries and having a common center, a base point mounted within said physical boundaries at said common center, a vertical measuring line mounted on said sheet and being operatively connected to said base point, a horizon line mounted on said sheet and intersecting said vertical measuring line, the geometrical major axes of said ellipses being parallel to one another and spaced from said horizon line, said axes not being disposed between said base point and horizon line, whereby one or more vanishing points can be selected on said horizon line and from which with said base point ultimately produce lines forming the lined grid field.
Claim 2
Dependent Claim
156 words
A template for producing a lined grid field on an overlaying drafting sheet and from which production a visually accurate perspective view is structured on the drafting sheet and comprising a sheet of material having physical boundaries, a pattern of portions on non-concentric ellipses mounted on said sheet within its physical boundaries and having a common center, a base point mounted within said physical boundaries at said common center, a vertical measuring line mounted on said sheet and being operatively connected to said base point, a horizon line mounted on said sheet and intersecting said vertical measuring line, the geometrical major axes of said ellipses being parallel to one another and spaced from said horizon line, said axes not being disposed between said base point and horizon line, whereby one or more vanishing points can be selected on said horizon line and from which with said base point ultimately produce lines forming the lined grid field.
Claim 3
Dependent Claim
13 words
The template of claim 1 wherein said portions of ellipses constitute complete ellipses.
Claim 4
Dependent Claim
34 words
The template of claim 1 wherein said pattern of portions of ellipses are mounted on said sheet of material between the geometrical axis of the smallest-sized portion of an ellipse and the horizon line.
Claim 5
Dependent Claim
30 words
The template of claim 1 wherein said pattern of portions of ellipses are mounted on said sheet of material below the geometrical axis of the smallest-sized portion of an ellipse.
Claim 6
Dependent Claim
40 words
The template of claim 3 or claim 4 wherein said portions of ellipses constitute curvatures having termini, and including a line mounted across such termini, the line being substantially parallel to the major axes of the ellipses of said portions.
Claim 7
Dependent Claim
187 words
A template for use in producing a lined grid on an overlaying drafting sheet or the like from which a visually accurate perspective view is to be structured and comprising a sheet of material having physical boundaries, a portion of an ellipse of a pattern of non-concentric ellipses mounted on said sheet within its physical boundaries and having a common center, and to which sheet one or more of the following elements are adapted either by being mounted on said sheet or by being mounted on the overlaying drafting sheet or the like a base point mounted at such common center, a vertical measuring line operatively connected to said base point, and a horizon line intersecting said vertical measuring line; the geometrical major axes of said ellipses being parallel to one another and spaced from said horizon line, said axes not being disposed between said base point and horizon line, whereby one or more vanishing points can be selected on said horizon line and from which with said base point ultimately produce lines on the overlaying drafting sheet or the like to form the lined grid sheet.
Claim 8
Dependent Claim
187 words
A template for use in producing a lined grid on an overlaying drafting sheet or the like from which a visually accurate perspective view is to be structured and comprising a sheet of material having physical boundaries, a portion of an ellipse of a pattern of non-concentric ellipses mounted on said sheet within its physical boundaries and having a common center, and to which sheet one or more of the following elements are adapted either by being mounted on said sheet or by being mounted on the overlaying drafting sheet or the like a base point mounted at such common center, a vertical measuring line operatively connected to said base point, and a horizon line intersecting said vertical measuring line; the geometrical major axes of said ellipses being parallel to one another and spaced from said horizon line, said axes not being disposed between said base point and horizon line, whereby one or more vanishing points can be selected on said horizon line and from which with said base point ultimately produce lines on the overlaying drafting sheet or the like to form the lined grid sheet.
Claim 9
Dependent Claim
13 words
The template of claim 6 wherein said portions of ellipses constitute complete ellipses.
Claim 10
Dependent Claim
35 words
The template of claim 6 wherein said pattern of portions of ellipses are mounted on said sheet of material between the geometrical major axis of the smallest-sized portion of an ellipse and the horizon line.
Claim 11
Dependent Claim
31 words
The template of claim 6 wherein said pattern of portions of ellipses are mounted on said sheet of material below the geometrical major axis of the smallest-sized portion of an ellipse.
Claim 12
Dependent Claim
38 words
The template of claim 8 or claim 9 wherein said portions of ellipses constitute curvatures having termini, and including a line adaptable for crossing such termini substantially parallel to the major axes of the ellipses of said portions.
Claim 13
Dependent Claim
15 words
The template of claim 10 wherein said line is mounted on said sheet of material.
Claim 14
Dependent Claim
59 words
The template of claim 1 or claim 7 being one of a series of templates including the elements of claim 1 or claim 8 as parameters for said series each of which parameters having at least one distinct value over like parameters for the same template in said series, based on a particular scale for said series of templates.
Claim 15
Dependent Claim
31 words
The template of claim 12 wherein said series of templates is one of a plurality of series of templates each of said series in a plurality being of a different scale.
Claim 16
Dependent Claim
30 words
The template of claim 1 or claim 2 or claim 3 or claim 4 including markings mounted on said vertical measuring line for indicating scaled successive units of linear measurement.
Claim 17
Dependent Claim
21 words
The template of claim 5 including markings mounted on said vertical measuring line for indicating scaled successive units of linear measurement.
Claim 18
Dependent Claim
29 words
For the template of claim 6 or claim 7 or claim 8 or claim 9 markings on said vertical measuring line for indicating scaled successive units of lineal measurement.
Claim 19
Dependent Claim
20 words
For the template of claim 10 markings on said vertical measuring line for indicating scaled successive units of linear measurement.
Claim 20
Dependent Claim
20 words
For the template of claim 11 markings on said vertical measuring line for indicating scaled successive units of linear measurement.
Claim 21
Dependent Claim
20 words
For the template of claim 12 markings on said vertical measuring line for indicating scaled successive units of linear measurement.
Claim 22
Dependent Claim
20 words
For the template of claim 13 markings on said vertical measuring line for indicating scaled successive units of linear measurements.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-18 | 1988-09-17 | 1989-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-18 | 1992-09-17 | 1993-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-18 | 1996-09-17 | 1997-03-19 | $7700.00 | Window Closed / Lapsed |