Patent US5759028A successfully refreshed from Google Patents.
EP0147232A2
Expired / Lapsed
EP
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A colour mixture indicator device
Assignee: Hall Neil Rex
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Filing: 1984-12-27
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Granted: —
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Expires: 2004-12-27
Abstract
Abstract The present invention discloses a set of dental colour indicator devices and a method of selecting dental colours. Each indicator device (20) has a number of colour samples (11-19) arranged in a regular array. Each of the samples corresponds to the colour at a corresponding location in an identical array formed on one of a plurality of transverse parallel cuts (26) through an elongate substantially elipsoid body (10) which represents the possible range of dental colours when graphically represented on a colour co-ordinate system such as the CIELAB psycometric colour system or the Munsell visual colour system. The selected colour is either the colour of one of the samples or a mixture of the colour of two adjacent samples.
Inventors
- 👤 Neil Rex Hall
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 21:22
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/46; G01J3/52; A; A61; A61C; A61C19/00; A61C19/10; G01J3/462; G01J3/50; G01J3/508; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/29; G01N21/293
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
85 words
A dental colour mixture indicator device comprising a plurality of colour samples (11-19) mutually spaced apart to form an array with the colour (1-9) of each of said samples being representative of the colour of a predetermined colour co-ordinate system at a co-ordinate location corresponding to the location of said sample on said array, whereby a desired dental colour intermediate a selected pair of said colour samples can be mixed for fabrication by a mixture of the colouring materials used to fabricate said selected pair.
Claim 2
Dependent Claim
85 words
A dental colour mixture indicator device comprising a plurality of colour samples (11-19) mutually spaced apart to form an array with the colour (1-9) of each of said samples being representative of the colour of a predetermined colour co-ordinate system at a co-ordinate location corresponding to the location of said sample on said array, whereby a desired dental colour intermediate a selected pair of said colour samples can be mixed for fabrication by a mixture of the colouring materials used to fabricate said selected pair.
Claim 3
Dependent Claim
16 words
An indicator device as claimed in claim 1 wherein said array is a substantially rectangular grid.
Claim 4
Dependent Claim
31 words
An indicator device as claimed in claim 2 having nine of said colour samples (11-19) separated by four spaces (22-25) through which the teeth (28-30) of a patient can be viewed.
Claim 5
Dependent Claim
44 words
An indicator device as claimed in claim 3 wherein said colour samples have a shape selected from the group of shapes consisting of rectangles, hexagons, circles and trapezoids and said spaces have a shape selected from the group consisting of rectangles, circles and trapezoids.
Claim 6
Dependent Claim
23 words
An indicator device as claimed in any one of claims 1 to 4 wherein said colour samples are mounted on a handle (21,31).
Claim 7
Dependent Claim
28 words
An indicator device as claimed in claim 5 wherein a group of said colour samples is movable with respect to another group or groups of said colour samples.
Claim 8
Dependent Claim
71 words
A set of dental colour mixture indicator devices, said set comprising a plurality of the indicator devices (20, 30, 32-34) of any one of claims 1 to 6 wherein the colours of the samples of each said device are located on a plane (26) of said co-ordinate system and the plane corresponding to each device is substantially parallel to, and spaced from, the planes of the other ones of said device.
Claim 9
Dependent Claim
37 words
A set of indicator devices as claimed in claim 7 . wherein said planes are substantially equally spaced apart and each colour sample in each said plane is substantially equally spaced apart from its adjacent colour samples.
Claim 10
Independent Claim
119 words
A method of selecting a dental colour from an elongate body (10) of possible dental colours represented on a colour co-ordinate system, said method comprising the steps of transversely cutting said body (10) with a plurality of substantially parallel cuts (26), selecting for each cut a plurality of colours (1-9), each of said colours lying at a corresponding location at the nodes of a regular array on said cut and selecting the desired shade of said dental colour by firstly selecting one of said cuts, and secondly selecting the desired shade to be either one of said selected colours for the selected cut or .a colour- mixture of two adjacent ones of said selected colours for the selected cut.
Claim 11
Independent Claim
119 words
A method of selecting a dental colour from an elongate body (10) of possible dental colours represented on a colour co-ordinate system, said method comprising the steps of transversely cutting said body (10) with a plurality of substantially parallel cuts (26), selecting for each cut a plurality of colours (1-9), each of said colours lying at a corresponding location at the nodes of a regular array on said cut and selecting the desired shade of said dental colour by firstly selecting one of said cuts, and secondly selecting the desired shade to be either one of said selected colours for the selected cut or .a colour- mixture of two adjacent ones of said selected colours for the selected cut.
Claim 12
Dependent Claim
64 words
A method as claimed in claim 9 wherein the selection of said selected cut is accomplished by selecting one indicator device (20, 30, 32-34) of the set of indicator devices as claimed in claim 6 or 7 and the selection of the desired shade is accomplished by a comparison of the colour of adjacent ones of the samples (11-19) of said selected indicator devices.
Claim 13
Dependent Claim
21 words
A coloured dental product in which the colour thereof is selected in accordance with the method of claim 9 or 10.
References Cited (Backward Citations)
No citation records indexed.
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