摘要:
A toothbrush with a cleaning zone with bristles, and with a deformable element by which the cleaning zone can be adapted to the shape of the tooth surface by the cleaning force, where the deformable element comprises flexible wings tapering in a wedge shape toward the cleaning zone and with guide elements between them, at least one of the wings and/or guide element is made of a compressible elastic material.
摘要:
A toothbrush head with bristles comprising tapered and non-tapered bristles, in which the non-tapered bristles extend to two different lengths from the face, being a first greater length LN1 and a second shorter length LN2. In a preferred embodiment non-tapered bristles are combined with tapered bristles in tufts which are inclined in opposite directions away from and towards the grip handle.
摘要:
Toothbrush heads with bristle tufts comprised of longer tapered bristles and shorter non-tapered bristles in respective embodiments comprising tufts which include both tapered and non-tapered bristles, and comprising an outer ring of tufts of non-tapered bristles round an inner region of tufts of longer tapered bristles.
摘要:
A toothbrush head having a bristle carrier, and bristles held in bristle holders, the bristle holders being connected to the bristle carrier by resilient connectors which cause the holders to move resiliently as brushing pressure is applied to the bristles and also cause the bristle holders to rotate. A suitable form of connector follows a conical surface between the bristle holder and bristle carrier.
摘要:
A valve actuator for a valved container containing a pressurised fluid, the actuator comprising a mounting to attach the actuator to the container, and characterized by a post-expansion chamber in communication with the outlet of the actuator in which residual fluid remaining in the outlet after use can expand, and a separate suction chamber in communication with the outlet conduit via a suction opening to suck residual fluid back toward the expansion chamber.
摘要:
Pumping and floating pistons (70) suitable for a hand pump (10) for a viscous fluid material such as a toothpaste, made of a plastics material coated with a barrier layer (75). A preferred barrier layer is a thermoplastic elastomer. The barrier layer of the pumping piston may be integrally formed into a one way outlet valve. The barrier layer reduces leakage of components of the fluid material out through the piston, or ingress of environmental components through the piston.
摘要:
A toothbrush head in which the fixed ends of the bristles are embedded in a mass of a polyurethane gel material incorporated in the head. Typical nylon materials as used for toothbrush bristles are found to bind with polyurethane gels so that advantageously holders for the bristles need not be used. A moulding process is also provided for making the toothbrush head.
摘要:
A toothbrush made partly of a hard plastic material and partly of an elastomeric material, characterized in that at least part of the elastomeric material comprises an inner core (23) of a first soft elastomeric material wholly or partly enclosed within an outer flexible skin (24) of a second polymer material having different physical characteristics to the inner core polymer. Processes for making such a toothbrush are also described.
摘要:
A process for producing oxygen-free or low-oxygen shaped bodies of silicon carbide, particularly SiC fibers, by using chemically reactive polysilanes and/or polycarbosilanes as precursors. In accordance with the invention green fibers are stabilized preferably in the presence of reactive gases.
摘要:
A toothbrush wherein longitudinally between its neck region and the grip handle is a an undulating region of transverse limbs integrally linked by folds with troughs between the limbs, the troughs containing a thermoplastic elastomer material bonded to the plastic material of said limbs with a ShoreA hardness of 60-70. Specific structures and dimensions of limbs and folds are disclosed.