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US RE38,230 E1Granted
Brush having plano-convex profile
AssigneeL'oreal
InventorJean-Louis H. Gueret
Life of this patent
Estimating the term…
Abstract
A brush (200) has a straight stem (201) defining a main axis (X—X), a flexible core (202) having a first and a second end, the first end being integral with the stem, and bristles (204) implanted radially in the core. The end of the bristles defining the surface (205) of the brush have a first face, the intersection of any meridian plane passing through the main axis with the surface of the brush defining two peak lines (207) having a specific curvature. The core is curved, the peak lines (207) are convex, and the first face (207.1) is substantially straight and parallel to the main axis (X—X).
Claims174
A brush comprising:
- a stem defining a main axis;
- a flexible core having a first and a second end, the first end being integral with said stem;
- and
- bristles implanted radially in said core, the ends of the bristles defining the surface of the brush,
- wherein the intersection of any meridian plane of the brush which passes through including the main axis, with the surface of the brush, defines two meridian lines, and wherein the core is curved along its length such that one of said meridian lines at a first face of the surface is substantially straight in a direction parallel to the main axis.
2 more elements
A method for manufacturing a brush, comprising the steps of :
- a) forming providing a starting brush having a stem defining a main axis, a flexible core having a first and a second end, the first end being integral with said stem, and bristles implanted radially in said core, the ends of the bristles defining the surface of the brush, wherein the intersection of any meridian plane of the brush which passes through including the main axis, intersects with the surface of the brush, defines to define two convex meridian lines;
- and
- b) imparting a curve to the core of the starting brush along its length such that a brush is formed which has a first face which is substantially straight in a direction parallel to the main axis.
A make-up device comprising:
- a mascara reservoir;
- and
- a member for the application of mascara, comprising a stem defining a main axis;
- a flexible core having a first and a second end, the first end being integral with said stem;
- and bristles implanted radially in said core, the ends of the bristles defining the surface of the brush, wherein the intersection of any a meridian plane of the brush which passes through including the main axis, intersects with the surface of the brush, defines to define two meridian lines, and wherein the core is curved along its length such that one of said meridian lines at a first face of the surface is substantially straight in a direction parallel to the main axis.
2 more elements
A brush comprising:
- a core including first and second ends;
- bristles extending radially from said core and being located between a first point along said core and a second point along said core, said bristles having ends defining a surface of said brush, said core being curved between said first and second points;
- wherein a straight line passing through said first and second points defines an axis of said brush, and
- wherein an intersection of said surface and a first meridian plane including said core defines a first meridian line segment and a second meridian line segment, said first meridian line segment being substantially straight in a direction parallel to said axis, and said second meridian line segment having convex curvature.
1 more element
A method of manufacturing a brush, comprising:
- providing a starting brush including
- a core including first and second ends, said core being substantially straight, a line extending between two points on said core defining an axis,
- bristles extending radially from said core and being located between a first point along said core and a second point along said core, said bristles having ends defining a surface of said starting brush, and
- wherein an intersection of said surface and a meridian plane including said core defines a first meridian line segment and a second meridian line segment, said first meridian line segment having convex curvature;
- and
- bending said core of said brush so that at least a portion of said first meridian line segment becomes substantially straight in a direction parallel to said axis.
3 more elements
A brush comprising:
- a core including first and second ends, said core being curved along a length of said core;
- a stem defining an axis of the brush, said stem being on one of said first and second ends of said core;
- and
- bristles extending radially from said core and being located along said core, said bristles having ends defining a surface of said brush;
- wherein an intersection of said surface and a first meridian plane including said core defines a first meridian line segment and a second meridian line segment, said first meridian line segment being substantially straight in a direction parallel to said axis, and said second meridian line segment having convex curvature.
2 more elements
A method of manufacturing a brush, comprising:
- providing a starting brush including
- a core including first and second ends, said core being substantially straight,
- a stem defining an axis, said stem being on one of said first and second ends of said core, and
- bristles extending radially from said core and being located along said core, said bristles having ends defining a surface of said starting brush, and
- wherein an intersection of said surface and a meridian plane including said core defines a first meridian line segment and a second meridian line segment, said first meridian line segment having convex curvature;
- and
- bending said core of said brush so that at least a portion of said first meridian line segment becomes substantially straight in a direction parallel to said axis.
4 more elements
A brush comprising:
- a stem defining a main axis;
- a flexible core having a first and a second end, the first end being integral with said stem;
- and
- bristles implanted radially in said core, the ends of the bristles defining the surface of the brush,
- wherein a meridian plane of the brush including the main axis intersects with the surface of the brush to define two meridian lines, and wherein the core is curved along its length, and one of said meridian lines at a first portion of the surface is substantially straight in a direction parallel to the main axis.
2 more elements
A brush comprising:
- a core including first and second ends;
- bristles extending radially from said core and being located between a first point along said core and a second point along said core, said bristles having ends defining a surface of said brush, said core being curved between said first and second points;
- wherein a straight line passing through said first and second points defines an axis of said brush, and
- wherein an intersection of said surface and a first meridian plane including said axis defines a first meridian line segment and a second meridian line segment, said first meridian line segment being substantially straight in a direction parallel to said axis, and said second meridian line segment having convex curvature.
1 more element
A method of manufacturing a brush, comprising:
- providing a starting brush including
- a core including first and second ends, said core being substantially straight, a line extending between two points on said core defining an axis,
- bristles extending radially from said core and being located between a first point along said core and a second point along said core, said bristles having ends defining a surface of said starting brush, and
- wherein an intersection of said surface and a meridian plane including said axis defines a first meridian line segment and a second meridian line segment, said first meridian line segment having convex curvature;
- and
- bending said core of said brush so that at least a portion of said first meridian line segment becomes substantially straight in a direction parallel to said axis.
3 more elements
A brush comprising:
- a core including first and second ends, said core being curved along a length of said core;
- a stem defining an axis of the brush, said stem being on one of said first and second ends of said core;
- and
- bristles extending radially from said core and being located along said core, said bristles having ends defining a surface of said brush;
- wherein an intersection of said surface and a first meridian plane including said axis defines a first meridian line segment and a second meridian line segment, said first meridian line segment being substantially straight in a direction parallel to said axis, and said second meridian line segment having convex curvature.
2 more elements
A method of manufacturing a brush, comprising:
- providing a starting brush including
- a core including first and second ends, said core being substantially straight,
- a stem defining an axis, said stem being on one of said first and second ends of said core, and
- bristles extending radially from said core and being located along said core, said bristles having ends defining a surface of said starting brush, and
- wherein an intersection of said surface and a meridian plane including said axis defines a first meridian line segment and a second meridian line segment, said first meridian line segment having convex curvature;
- and
- bending said core of said brush so that at least a portion of said first meridian line segment becomes substantially straight in a direction parallel to said axis.
4 more elements
Dependencies are inferred from the claim text.