US3878615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for determining dimensional reductions and enlargements
Assignee: Individual
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Filing: 1974-03-05
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Granted: 1975-04-22
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Expires: 1994-03-05
Abstract
Abstract A device for measuring and proportionately reducing or enlarging the dimensions of a two dimensional area. It comprises a pair of members each of which include first and second arms forming a right angle therebetween and a pair of clips slidably mounted on the members such that a rectangle of adjustable area is enclosed by the arms. One member carries indicia representing the length and width dimensions of a rectangular area as well as the dimensions reduced by factors of varying degree. The other member carries similar indicia differing in that varying degrees of enlargement of the rectangular area are represented.
Inventors
- 👤 Francis N Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:21
CPC Classifications
B; B43; B43L; B43L7/00; B43L7/10; B43L7/12; B43L7/125; B43L7/14; Y; Y10; Y10S; Y10S33/00; Y10S33/09
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
392 words
A device for determining dimensional reductions or enlargements comprising: a. a first member having a first pair of straight edges forming an inside 90* angle therebetween, b. said first member including a face adjacent said first pair of edges, c. a plurality of first longitudinal lines on said face parallel to and spaced from one of said first pair of edges, d. a plurality of first transverse lines extending from equally spaced positions along said one of said first pair of edges across said face in a fan-like manner to intersect said first longitudinal lines at positions equally spaced along each of said first longitudinal lines and wherein the spacing of said last mentioned positions along different of said first longitudinal lines is equal to the spacing of said positions along said one of said first pair of edges multiplied by differing factors of reduction or enlargement, e. a plurality of second longitudinal lines on said face parallel to and spaced from said the other of said first pair of edges, f. a plurality of second transverse lines extending from equally spaced positions along said the other of said first pair of edges across said face in a fan-like manner to intersect said second longitudinal lines at positions equally spaced along each of said second longitudinal lines and wherein the spacing of said last mentioned positions along different of said second longitudinal lines is equal to the spacing of said positions along said the other of said first pair of edges multiplied by differing factors Of reduction or enlargement, g. indicia on said face associated with said transverse lines for identifying said transverse lines, h. indicia on said face associated with each of said longitudinal lines indicating the value of said factors of reduction or enlargement corresponding therewith, i. a second member having a second pair of straight edges forming an inside 90* angle therebetween, and j. means adjustably securing said first member to said second member in overlapping arrangement to enclose a rectangular area of adjustable size bordered by said edges, k. one of said second pair of edges extending across said plurality of first longitudinal lines and the other of said second pair of edges extending across said plurality of second longitudinal lines to serve as indexes for taking readings from the scales formed by said longitudinal and transverse lines.
Claim 2
Independent Claim
392 words
A device for determining dimensional reductions or enlargements comprising: a. a first member having a first pair of straight edges forming an inside 90* angle therebetween, b. said first member including a face adjacent said first pair of edges, c. a plurality of first longitudinal lines on said face parallel to and spaced from one of said first pair of edges, d. a plurality of first transverse lines extending from equally spaced positions along said one of said first pair of edges across said face in a fan-like manner to intersect said first longitudinal lines at positions equally spaced along each of said first longitudinal lines and wherein the spacing of said last mentioned positions along different of said first longitudinal lines is equal to the spacing of said positions along said one of said first pair of edges multiplied by differing factors of reduction or enlargement, e. a plurality of second longitudinal lines on said face parallel to and spaced from said the other of said first pair of edges, f. a plurality of second transverse lines extending from equally spaced positions along said the other of said first pair of edges across said face in a fan-like manner to intersect said second longitudinal lines at positions equally spaced along each of said second longitudinal lines and wherein the spacing of said last mentioned positions along different of said second longitudinal lines is equal to the spacing of said positions along said the other of said first pair of edges multiplied by differing factors Of reduction or enlargement, g. indicia on said face associated with said transverse lines for identifying said transverse lines, h. indicia on said face associated with each of said longitudinal lines indicating the value of said factors of reduction or enlargement corresponding therewith, i. a second member having a second pair of straight edges forming an inside 90* angle therebetween, and j. means adjustably securing said first member to said second member in overlapping arrangement to enclose a rectangular area of adjustable size bordered by said edges, k. one of said second pair of edges extending across said plurality of first longitudinal lines and the other of said second pair of edges extending across said plurality of second longitudinal lines to serve as indexes for taking readings from the scales formed by said longitudinal and transverse lines.
Claim 3
Independent Claim
392 words
A device for determining dimensional reductions or enlargements comprising: a. a first member having a first pair of straight edges forming an inside 90* angle therebetween, b. said first member including a face adjacent said first pair of edges, c. a plurality of first longitudinal lines on said face parallel to and spaced from one of said first pair of edges, d. a plurality of first transverse lines extending from equally spaced positions along said one of said first pair of edges across said face in a fan-like manner to intersect said first longitudinal lines at positions equally spaced along each of said first longitudinal lines and wherein the spacing of said last mentioned positions along different of said first longitudinal lines is equal to the spacing of said positions along said one of said first pair of edges multiplied by differing factors of reduction or enlargement, e. a plurality of second longitudinal lines on said face parallel to and spaced from said the other of said first pair of edges, f. a plurality of second transverse lines extending from equally spaced positions along said the other of said first pair of edges across said face in a fan-like manner to intersect said second longitudinal lines at positions equally spaced along each of said second longitudinal lines and wherein the spacing of said last mentioned positions along different of said second longitudinal lines is equal to the spacing of said positions along said the other of said first pair of edges multiplied by differing factors Of reduction or enlargement, g. indicia on said face associated with said transverse lines for identifying said transverse lines, h. indicia on said face associated with each of said longitudinal lines indicating the value of said factors of reduction or enlargement corresponding therewith, i. a second member having a second pair of straight edges forming an inside 90* angle therebetween, and j. means adjustably securing said first member to said second member in overlapping arrangement to enclose a rectangular area of adjustable size bordered by said edges, k. one of said second pair of edges extending across said plurality of first longitudinal lines and the other of said second pair of edges extending across said plurality of second longitudinal lines to serve as indexes for taking readings from the scales formed by said longitudinal and transverse lines.
Claim 4
Independent Claim
392 words
A device for determining dimensional reductions or enlargements comprising: a. a first member having a first pair of straight edges forming an inside 90* angle therebetween, b. said first member including a face adjacent said first pair of edges, c. a plurality of first longitudinal lines on said face parallel to and spaced from one of said first pair of edges, d. a plurality of first transverse lines extending from equally spaced positions along said one of said first pair of edges across said face in a fan-like manner to intersect said first longitudinal lines at positions equally spaced along each of said first longitudinal lines and wherein the spacing of said last mentioned positions along different of said first longitudinal lines is equal to the spacing of said positions along said one of said first pair of edges multiplied by differing factors of reduction or enlargement, e. a plurality of second longitudinal lines on said face parallel to and spaced from said the other of said first pair of edges, f. a plurality of second transverse lines extending from equally spaced positions along said the other of said first pair of edges across said face in a fan-like manner to intersect said second longitudinal lines at positions equally spaced along each of said second longitudinal lines and wherein the spacing of said last mentioned positions along different of said second longitudinal lines is equal to the spacing of said positions along said the other of said first pair of edges multiplied by differing factors Of reduction or enlargement, g. indicia on said face associated with said transverse lines for identifying said transverse lines, h. indicia on said face associated with each of said longitudinal lines indicating the value of said factors of reduction or enlargement corresponding therewith, i. a second member having a second pair of straight edges forming an inside 90* angle therebetween, and j. means adjustably securing said first member to said second member in overlapping arrangement to enclose a rectangular area of adjustable size bordered by said edges, k. one of said second pair of edges extending across said plurality of first longitudinal lines and the other of said second pair of edges extending across said plurality of second longitudinal lines to serve as indexes for taking readings from the scales formed by said longitudinal and transverse lines.
Claim 5
Dependent Claim
46 words
The device of claim 1 and wherein: a. said transverse and longitudinal lines form a scale for determining dimensional reductions, b. said second member includes a face adjacent said second pair of edges and bearing transverse and longitudinal lines forming a scale for determining dimensional enlargements.
Claim 6
Dependent Claim
21 words
The device of claim 1 and wherein said means adjustably securing said members includes a clip slidably mounted on said members.
Claim 7
Dependent Claim
48 words
The device of claim 3 and wherein said clip includes means defining a channel for said first member to slide rectilinearly therein and means defining a channel for said second member to slide rectilinearly therein in a direction perpendicular to the direction of movement of said first member.
Claim 8
Dependent Claim
19 words
The device of claim 3 and wherein said means adjustably securing said members includes a pair of said clips.
Claim 9
Dependent Claim
11 words
The device of claim 3 and wherein said clip is transparent.
Claim 10
Dependent Claim
27 words
The device of claim 1 wherein said means adjustably securing said first member to said second member includes means for permitting rectilinear relative movement of said members.
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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |