Toothbrush

• US 4,805,252 A
• Filed: 10/13/1987
• Issued: 02/21/1989
• Est. Priority Date: 10/13/1987
• Status: Expired due to Term

• Current Assignee: John O. Butler Company (Hosei Gijuku Luxembourg SA)
• Original Assignee: John O. Butler Company (Hosei Gijuku Luxembourg SA)
• Inventors: Tarrson, Emanuel B., Maric, Dane
• Primary Examiner(s): Feldman, Peter
• Application Number:
  US07/108,129
• Time in Patent Office: 497 Days
• Field of Search: 15/167.1, 15/167.2, 15/206, 15/176, 433/127, 433/128, 433/147, 279/1 B, 279/76, 279/84
• US Class Current: 15/167.1
• CPC Class Codes: A46B 3/18 the bristles being fixed on or between belts or wires
• CPC Class Codes: A46B 7/04 interchangeably removable bristle carriers
• CPC Class Codes: Y10S 279/904 Quick change socket

Abstract

An interdental toothbrush has a refill with a twisted wire stem which has a molded plastic encasement over the end thereof. A toothbrush handle has a hole with internal contours which complement the external contours of the plastic encasement. A sleeve slides over the hole to capture and entrap the brush.

Claims

1. A refill and toothbrush comprising a twisted wire brush having a stem with a plastic encasement molded thereon, said plastic encasement including an enlarged collar between an anchor stem and said brush and a capture part beneath the collar, and a toothbrush handle having a hole therein with internal contours which are complementary to at least part of the external contours of said plastic encasement.

2. The refill and toothbrush of claim 1 and capture means associated with said handle for capturing said plastic encasement.

3. The refill and toothbrush of claim 2 wherein said capture means is a sleeve which slides along said handle between positions which capture and release said collar.

4. The refill and toothbrush of claim 3, wherein said sleeve includes a funnel shaped opening leading through capture shoulders to an opening for surrounding said capture part.

5. The refill and toothbrush of claim 4 wherein said sleeve fits snugly over said collar when said plastic encasement is in said hole.

6. The refill and toothbrush of claim 5 wherein said hole extends perpendicularly through said toothbrush handle.

7. A toothbrush comprising an elongated handle having opposing ends of reduced diameter with sleeves slidably mounted on said reduced diameter ends, a hole transversely extending at least part way through said handle at a position where said sleeve may cover or uncover said hole, a counter sunk area at one end of said hole, a twisted wire spring brush having plastic molded around the end of said twisted wire with external contours which are complementary to the internal contours of said hole and said counter sunk area, said twisted wire emerging from said molded plastic on an end which is complementary to said counter sunk area, and a shape on said sleeve for surrounding and capturing said molded plastic when it is in place within said hole.

8. The toothbrush of claim 7 wherein said sleeve has a shape for sliding over said twisted wire stem and capturing said brush.

9. A refill and toothbrush comprising a twisted wire brush having a stem with a plastic encasement molded thereon, said plastic encasement including a collar with a capture part beneath the collar, a toothbrush handle having a hole therein with internal contours which are complementary to the external contours of said plastic encasement, capture means associated with said handle for capturing said plastic encasement, said capture means comprising a sleeve which slides along said handle between positions which capture and release said collar, said sleeve including a funnel shaped opening leading through capture shoulders to an opening for surrounding said capture part.

10. The refill and toothbrush of claim 9 wherein said handle having a counter sunk area for receiving said collar, said sleeve fitting snugly over said collar when it is in said counter sunk area.

11. The refill and toothbrush of claim 10 wherein said hole extends perpendicularly through said toothbrush handle.