Hairbrush with bristles retained on a flexible pad body

Details Hairbrush with bristles retained on a flexible pad body Hairbrush with bristles retained on a flexible pad body

2002-05-13

2003-09-16

Shaver, Kevin (Department: 3732)

Brushing, scrubbing, and general cleaning

Implements

Brush or broom

C132S152000

Reexamination Certificate

active

06618893

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a hairbrush with bristles retained on a flexible pad body, more particularly to a hairbrush with a pad body for the bristles retained on a flexible pad body.
2. Description of the Related Art
Referring to
FIG. 1
, a conventional hairbrush
10
is shown to include a handle body
11
, a flexible pad body
12
mounted on one end ill of the handle body
11
, and a plurality of bristles
13
. As illustrated, the pad body
12
is formed with a plurality of through holes
121
, and a net layer
132
is disposed on a top side
122
of the pad body
12
. Each of the bristles
13
has an enlarged head portion
132
retained at a space between the net layer
123
and the top side
122
of the pad body
12
, and a slender bristle segment
131
that extends from the enlarged head portion
132
and through holes
121
in the pad body
12
. Because the pad body
12
is formed from a flexible material, the bristles
13
can conform to the contour of the user's head. However, due to the accumulation of moisture within the space between the handle body
11
and the pad body
12
, the structural strength of the net layer
123
tends to be degraded after the hairbrush
10
has been in use for a period of time. Thus, the head portions
123
of the bristles
13
tend to pierce through the net layer
123
such that the bristles
13
are movable in the through holes
121
. Consequently, the hairbrush
10
has a relatively short service life in view of aforementioned drawback.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a hairbrush with bristles that are retained on a flexible pad body in a manner which is clear of the aforementioned drawback that generally results from the use of the conventional hairbrush.
Accordingly, the hairbrush of the present invention includes a flexible pad body formed integrally from a flexible material, and a plurality of bristles. Each bristle is formed with an enlarged head portion and a slender bristle segment extending from the enlarged head portion. The pad body extends in a longitudinal direction, and has a top surface and a bottom surface opposite to the top surface in a vertical direction. The bottom surface is formed with a plurality of bristle-retention blind holes that extend in the vertical direction toward the top surface. Each bristle-retention blind hole has an open end adjacent to the bottom surface, a closed end opposite to the open end, a small-diameter hole portion adjacent to the open end, and a large-diameter hole portion adjacent to the closed end. The large-diameter hole portion is larger than the small-diameter hole portion. Each bristle is retained on the pad body at a respective one of the bristle-retention blind holes such that the enlarged head portion is disposed in the large-diameter hole portion and is prevented from removal therefrom by the small-diameter hole portion, and such that the slender bristle segment extends out of the respective one of the bristle-retention blind holes via the small-diameter hole portion. The top surface of the pad body is formed with a groove unit to form a spacing between the enlarged head portions of adjacent ones of the bristles in at least a transverse direction transverse to the longitudinal direction.


REFERENCES:
patent: 3739419 (1973-06-01), Natman et al.
patent: 5095892 (1992-03-01), Tsumura
patent: 5435032 (1995-07-01), McDougall
patent: 5974619 (1999-11-01), Weihrauch

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