Hair brush
AssigneeTung Hing Plastic Manufactory Ltd.
InventorKa Chuen Sze
Life of this patent
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AssigneeTung Hing Plastic Manufactory Ltd.
InventorKa Chuen Sze
Estimating the term…
One aspect of the present invention is concerned with a method of manufacture of a hair brush. The method has the steps of providing a base member having connection means at circumferential region thereof, providing a sheet material having a plurality of spikes extending from outwardly facing surface of the sheet material, the sheet material and the spikes are integrally formed by injection molding of a plastic(s) material selected from the group consisting of thermoplastics polyester elastomer (TPE-E), polyether block amide copolymer (TPE-A), thermoplastic polyurethane (TPU) and polyurethane (PU), with a hardness from substantially Shore D50 to D65, and with a flexural modulus from 30,000 PSI to 40,000 PSI, assembling the sheet material by fitting perimeter thereof to the circumferential region of the base member, the base member and the connection means are configured to allow the sheet material to secure to the base member. The outwardly facing surface assumes a convex curvature. In an assembled configuration, a cavity is defined between the sheet material and the base member. In use, when the spikes are under pressure the spikes are movable in response to the pressure, causing corresponding movement to the sheet material, the movement creating a cushioning effect.
A method of manufacture of a cushion hair brush comprising the steps of:
A cushion hair brush comprising a utility portion and a handle portion, wherein the utility portion includes a base member, a combination of a non-perforated sheet material and a plurality of spikes extending from an outwardly facing surface of the sheet material, and connection means for securing the sheet material to the base member, the combination configured to engage the hair and/or scalp of a user during use, wherein the base member is configured to receive perimeter of the sheet material at the connection means, the non-perforated sheet material and the spikes together are integrally formed by injection molding of thermoplastics polyester elastomer (TPE-E) or polyether block amide copolymer (TPE-A) or polyurethane (PU) for both the non-perforated sheet material and the spikes in one step, wherein by way of configuration of the sheet material and the spikes, the combination has a hardness from substantially Shore D50 to D65, and with a flexural modulus from 30,000 PSI to 40,000 PSI, and the combination when assembled to the base member at the connection means is caused to project away from the base member, thus forming a hump defining a convex surface from which the plurality of spikes protrudes, wherein the connection means includes a recessed formation at the circumferential region of the base member, the recessed formation being sized and shaped to receive the perimeter of the sheet material, and wherein the connection means includes a flange member for fitting at the recessed formation after the sheet material is fitted to the base member.
Dependencies are inferred from the claim text.