A brushroll dowel for a vacuum cleaner has a bristle stiffener protruding from a brush dowel. A plurality of stiffened bristles protrude from the brush dowel adjacent to the bristle stiffener, and a plurality of unstiffened bristles also protrude from the brush dowel and are non-adjacent to the bristle stiffener.

Increasingly, individuals use online social network platforms (also referred to as Internet-based social networks) to access a variety of information and content, such as articles on various topics, updates related to a user and individuals within the user's network, friend suggestions, advertisements, news stories, and the like. Among other things, embodiments of the present disclosure can be used to help identify users of a social network based on various information.

A toothbrush, comprises a handle; a head connected to the handle; and a plurality of bristles, respective ones of the plurality of bristles including a first end having a first shape formed by an end-rounding process, a second end having a second shape, and a substantially cylindrical shaft extending between the first end and the second end. The bristles are fastened to the head by a fastener at a fastening point along the shaft, the fastening point being located nearer to the second end than to the first end such that the first end extends from a surface of the head to a first height and the second end extends from the surface of the head to a second height. The first height is greater than the second height.

A toothbrush includes a handle and a bristle-carrying head part, which are connected to each other by a neck part, the head part having a multiplicity of tufts of bristles consisting of bristles. An anchor is oriented at right angles to the longitudinal axis. Two or more tufts of bristles have a bristle tuft half with bristle ends standing up higher in relation to the bristle ends of the other bristle tuft half.

A toothbrush includes a handle and a bristle-carrying head part, which are connected to each other by a neck part, the head part having a multiplicity of tufts of bristles consisting of bristles. An anchor is oriented at right angles to the longitudinal axis. Two or more tufts of bristles have a bristle tuft half with bristle ends standing up higher in relation to the bristle ends of the other bristle tuft half.

A device used in the technical field of producing bristle products. The device (1) includes a tufting tool (3) for tufting bundles of bristles (4) into a provided bristle carrier (5) and a bristle displacer (6) for displacing already tufted bundles of bristles from a tufting region of the tufting tool (3). The tufting tool (3) and the bristle displacement element (6) are connected to a common drive shaft (9) of the device via a respective coupling gear mechanism (7) and/or (8) and are driven by same.

A tuft picker for a tuft-picking device has a working surface having a tuft-picking notch with a depth, a width, and an opening. First and second projections reduce the opening of the notch versus an inner width. At least one top of the first and/or second projection is located off-site the working surface of the tuft picker and inside of the notch. A distance from the at least one top to the working surface of the tuft picker is in the range of from 0.05 mm to 0.5 mm, and an angle between the working surface of the tuft picker and a line of reflection symmetry crossing the at least one top is from 1 to 45.

A bristled tool head and a method of fabrication thereof, the method comprising molding a shell having a top surface and a bottom surface, the bottom surface comprising a pattern of housings, the housings being selectively localised and inclined relative to a direction normal to a plan of the shell depending on a position along a length and across a width of the bottom surface; finishing the housings of the as-molded shell into sockets; and securing tufts of bristles within the sockets.

A detecting machine for a yield rate of bristles of a toothbrush and a detecting method for the bristles are provided. The detecting machine includes a power device and two rotating units, and the two rotating units are rotatably mounted on a side surface of the power unit. The two rotating units are disposed parallel to each other. When in a rotating condition, the two rotating units rotate in opposite rotating directions. When a manufacturer horizontally disposes a toothbrush between the two rotating units, the surfaces of the two rotating units may compress the bristles and pull the bristles toward a direction away from the toothbrush. Therefore the manufacturer can inspect whether the bristles are firmly mounted on the toothbrush.

A detecting machine for a yield rate of bristles of a toothbrush and a detecting method for the bristles are provided. The detecting machine includes a power device and two rotating units, and the two rotating units are rotatably mounted on a side surface of the power unit. The two rotating units are disposed parallel to each other. When in a rotating condition, the two rotating units rotate in opposite rotating directions. When a manufacturer horizontally disposes a toothbrush between the two rotating units, the surfaces of the two rotating units may compress the bristles and pull the bristles toward a direction away from the toothbrush. Therefore the manufacturer can inspect whether the bristles are firmly mounted on the toothbrush.