Toothbrush having pressure relief unit and method of producing same
US7938492B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Mar 28, 2005 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Sep 1, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/425
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed are a toothbrush and a method of producing the same. The toothbrush of the present invention includes a pressure relief unit installed in a head part of the toothbrush. The unit has a plate shape and a predetermined size sufficient to cover bristles set in the head part. In the present invention, the head part is thin, and the bristles are set in the head part without using a wire. Furthermore, the present invention is easily adapted for mass production using inexpensive equipment. Also, the pressure relief unit serves as a reinforcing unit. Therefore, the head part is prevented from breaking during use despite having a reduced thickness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.