Abstract: A closure 100 is provided for a container 104. The closure 100 has a base 112 for being installed at the opening of the container 104 interior and has open ends defining an access passage 148 extending between the open ends. The closure 100 has a liner 166 disposed between the closure base 112 and the container opening, and the liner 166 has an internal edge 214 defining a central hole. The closure 100 has a valve 160 for being located at the closure access passage 148. The valve 160 has (i) a closed configuration for occluding the access passage 148; and (ii) an open configuration for permitting communication through the access passage 148. The closure 100 has a retainer 170 for retaining the valve 160 at the closure access passage 148, and the retainer 170 has an outer surface with at least one liner abutment 186 extending therefrom for inhibiting contact between the liner internal edge 214 and the contents of the container 104.

Abstract: A closure 100 is provided for a container 104. The closure 100 has a base 112 for being installed at the opening of the container 104 interior and has open ends defining an access passage 148 extending between the open ends. The closure 100 has a liner 166 disposed between the closure base 112 and the container opening, and the liner 166 has an internal edge 214 defining a central hole. The closure 100 has a valve 160 for being located at the closure access passage 148. The valve 160 has (i) a closed configuration for occluding the access passage 148; and (ii) an open configuration for permitting communication through the access passage 148. The closure 100 has a retainer 170 for retaining the valve 160 at the closure access passage 148, and the retainer 170 has an outer surface with at least one liner abutment 186 extending therefrom for inhibiting contact between the liner internal edge 214 and the contents of the container 104.

Abstract: A toothbrush which is particularly well adapted for properly cleaning tooth surfaces and interproximal areas having a plurality of tufts of bristles mounted in the head of the toothbrush with the tufts cut in a series of at least two rounded peaks extending laterally across the head and in which the tufts of bristles may be arranged in at least two longitudinally disposed outer rows defining an inner area lying therebetween and at least one longitudinally disposed inner row is positioned in the inner area, with the tips of the inner row of tufts of bristles being feathered.

Abstract: An interdental twisted wire brush having roughened, tapered and rounded bristle ends prepared by rotating the interdental brush both transversely to the axis of the brush and axially along its longitudinal axis, while flexing the bristles and grinding the bristle ends of the interdental brush against a flat, moving abrasive surface.

Abstract: An interdental twisted wire brush having roughened, tapered and rounded bristle ends prepared by rotating the interdental brush both transversely to the axis of the brush and axially along its longitudinal axis, while flexing the bristles and grinding the bristle ends of the interdental brush against a flat, moving abrasive surface.