Granted Patent B2

US 12,419,409 · App. 17/517,928 · Granted Sep 23, 2025

Inventor: Uwe Jungnickel (Königstein, DE)

Assignee: The Gillette Company LLC

A46B5/02A46B5/0095A46B2200/1066

Abstract

Claims (18)

1. A handle ( 12 ) for a personal care implement ( 10 ), the handle ( 12 ) has an overall length extension ( 28 ) extending from a proximal end ( 30 ) closest to a head ( 14 ) to a distal end ( 32 ), the distal end ( 32 ) being opposite the proximal end ( 30 ), the handle ( 12 ) comprising a connector ( 16 ) for repeatedly attaching and detaching a head ( 14 ) to and from the handle ( 12 ), the handle ( 12 ) further comprising a core structure ( 18 ) at least partially surrounded by a second component ( 22 ), the core structure ( 18 ) has a length extending at least 75% along the overall length extension ( 28 ) of the handle ( 12 ), the core structure comprising a plurality of protrusions ( 36 ) disposed along the length of the core structure, the plurality of protrusions ( 36 ) extending outward towards the second component ( 22 ) in a substantially orthogonal direction, the plurality of protrusions ( 36 ) enabling a solid connection and mechanical interlock between the core structure ( 18 ) and the second component ( 22 ), the core structure ( 18 ) and the connector ( 16 ) being unitarily made to form a core-connector unit ( 20 ), wherein the core-connector unit ( 20 ) is made from a fiber-reinforced material,

wherein the fiber-reinforced material is a composite material comprising a polymer base material,

wherein the polymer base material is selected from the group consisting of polyamide, styrene acrylonitrile resin, polybutylene terephthalate, polyethylene terephthalate, recycled plastic materials, and any combination thereof,

wherein the fiber-reinforced material comprises from 10 wt % to 50 wt % of fiber.

2. The handle ( 12 ) of claim 1 , wherein the fiber is selected from the group of: glass fibers, carbon fibers, aramid fibers, basalt fibers, wood fibers, or any combinations thereof.

3. The handle ( 12 ) of claim 1 , wherein the second component ( 22 ) comprises polymeric material comprising a filler material.

4. The handle ( 12 ) of claim 3 , wherein the filler material is selected from the group consisting of zinc oxide, iron oxide, barium sulfate, titanium dioxide, aluminium oxide, and any combination thereof.

5. The handle ( 12 ) of claim 1 , wherein the second component ( 22 ) is made from a polymeric material comprising a base material and an inorganic filler material, wherein the base material is selected from a group consisting of polyamide, styrene acrylonitrile resin, polybutylene terephthalate, polyethylene terephthalate, recycled plastic materials, and any combination thereof, and wherein the filler material constitutes from 50 wt % to 80 wt % of the polymeric material.

6. The handle ( 12 ) of claim 1 , wherein the fiber-reinforced material has a density of from 1 g/cm 3 to 1.7 g/cm 3 .

7. The handle ( 12 ) of claim 3 , wherein the polymeric material of the second component ( 22 ) has a density of from 2 g/cm 3 to 3.5 g/cm 3 .

8. The handle ( 12 ) of claim 1 , wherein the handle ( 12 ) further comprises a third component ( 24 ) at least partially covering at least one of the core-connector unit ( 20 ) and the second component ( 22 ).

9. The handle ( 12 ) of claim 1 , wherein the handle ( 12 ) is a toothbrush handle.

10. A personal care implement ( 10 ) comprising the handle ( 12 ) of claim 1 and a head ( 14 ).

11. The handle ( 12 ) of claim 1 , wherein the fiber-reinforced material comprises from 25 wt % to 35 wt % of fiber.

12. The handle ( 12 ) of claim 11 , wherein the fiber-reinforced material comprises 30 wt % of fiber.

13. The handle ( 12 ) of claim 8 , wherein the third component ( 24 ) is a thermoplastic elastomer material.

14. The handle ( 12 ) of claim 1 , wherein the handle ( 12 ) is an oral care handle.

15. The handle ( 12 ) of claim 1 , wherein the fiber comprises glass fibers.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (400)