Toothbrush

• US 4,571,768 A
• Filed: 08/14/1984
• Issued: 02/25/1986
• Est. Priority Date: 08/19/1983
• Status: Expired due to Fees

• Current Assignee: Tochigi Seiko Company Limited
• Original Assignee: Tochigi Seiko Company Limited
• Inventors: Kawashima, Yonesaburo
• Primary Examiner(s): NOT, DEFINED
• Application Number:
  US06/640,688
• Time in Patent Office: 560 Days
• Field of Search: 15/167 R, 15/167 A, 15/159 R, 15/159 A, 15/110, 128/1.3, 128/1.4, 128/62 A
• US Class Current: 15/167.1
• CPC Class Codes: A46B 15/0002 Arrangements for enhancing monitoring or controlling the brushing process
• CPC Class Codes: A46B 15/0026 with a magnetic means
• CPC Class Codes: A46B 15/0075 Brushes with an additional massage device
• CPC Class Codes: A46B 2200/1066 Toothbrush for cleaning the teeth or dentures A61C17/16 takes precedence; bristles arrangements for toothbrushes A46B9/04
• CPC Class Codes: A46B 9/06 Arrangement of mixed bristles or tufts of bristles, e.g. wire, fibre, rubber
• CPC Class Codes: A46D 1/00 Bristles; Selection of materials for bristles making artificial bristles D01D, D01F
• CPC Class Codes: A46D 1/023 Bristles with at least a core and at least a partial sheath
• CPC Class Codes: B29L 2031/425 Toothbrush

Abstract

A toothbrush having a plurality of bristles supported on a bristle supporting portion of the toothbrush, wherein at least one resilient projecting element encapsulating a permanent magnet in the tip end portion thereof is supported on the bristle supporting portion. The height of the projecting element is somewhat lower than that of the bristles.

Claims

1. In a toothbrush having a plurality of bristles supported on a bristle supporting portion of the toothbrush, at least one resilient projecting element being supported on the bristle supporting portion with the height thereof being somewhat lower than that of the bristles, a permanent magnet being encapsulated in the tip end portion of the projecting element, said projecting element comprising a hollow synthetic resin tube supporting the permanent magnet at the tip thereof, and an elongated synthetic resin piece having a hardness greater than the hardness of the synthetic resin tube and disposed inside the tube at the base thereof.

2. A toothbrush according to claim 1 wherein the magnetic flux density of the permanent magnet is about 2000 Gauss.