This invention relates to a flashlight. The
flashlight is used to illuminate a dark area, and it
gives light when the switch is switched on.
One major drawback in metal flashlights is that the
body gets corroded if there is a leakage in the battery
used in the flashlight. This battery leakage cannot be
avoided fully even in the case of leak proof batteries,
especially if the batteries are left inside the
flashlight for a long time.
Another drawback of the flashlight is that when the
place is dark, especially when there is a power break-
down, it is not possible to locate the flashlight.
To obviate these drawbacks, the present invention
provides a flashlight comprising a casing in which at
least one battery can be housed, a cap mounted at one end
of the casing and a reflector housing located at the
other end of the casing, a reflector housed in said
housing and having means for mounting a bulb, switch
means connected to said bulb and fixed on the outer
surface of the casing, and a glass lens mounted on the
reflector housing by means of a reflector ring,
characterized in that a phosphorescent ring is interposed
between the glass lens and the lens ring, and a sleeve
forming a protection shield is provided inside the
casing to surround the battery.

The invention will now be described with reference
to the accompanying drawings accompanying the Provisional
Specification, wherein -
Fig.l shows in elevation one emobodiment of a flashlight
according to the present invention in a disassembled
state;
Figs.2 and 2A show elevation view and side view of a
phosphorescent ring used in the flashlight of Fig.l; and
Figs.3 and 3A show elevation view and side view of a
sleeve used in the flashlight of Fig.l.
In Fig.l, the flashlight has a casing 1. A cap 2 has
screw threads for securing it to one end 1A of the
casing.
One or more batteries (not shown) can be housed in the
casing
1. At the other end IB of the casing, a reflector housing
3 is mounted. A reflector 4 is housed in said housing 3.
A bulb (not shown) is mountable in the reflector housing
to project inside the reflector 4. A glass lens 5 is
mounted at end IB of the casing to the reflector housing
4 by means of a reflector ring 6. The reflector ring 6
and reflector housing 4 are provided with securing means
such as screw threads for securing the two parts. A
switch 9 is mounted on the exterior of the casing 1 and
is connected to the bulb. A shoulder strap 10 is attached
to the casing 1.

According to the present invention, a phosphorescent
ring 7 (Figs.l, 2 and 2A) is interposed between the lens
5 and the reflector ring 6. When there is darkness, the
phosphorescent ring 7 emits light so that the flashlight
can be located in darkness. The phosphorescent ring 7 is
provided with a a phosphorescent pigment incorporated
therein. The phosphorescent ring 7 holds the glass lens 5
and the reflector 4. The phosphorescent ring 7 is
preferably made of low-density polyethylene or high-
density polyethylene or high-density polypropylene. The
light emitting property can be obtained by moulding the
phosphorescent ring 7 with a phosphorescent pigment such
as a strontium based pigment (for eg. "luminova"
manufactured by Neumoto of Japan). In the attached
position, the phosphorescent ring 7 is visible.
A sleeve 8 (Figs.l, 3 and 3A) is provided inside the
casing 1 to surround the batteries. The sleeve is
removably located in the casing. Since the sleeve 8 is
interposed between the batteries and the wall of the
casing, corrosion of the casing wall due to battery
leakage is prevented or reduced considerably. The sleeve
is made of a material which does not react with the
chemicals in the battery. The sleeve is preferably made
of polyvinyl chloride or high-density polyethylene or
high-density polypropylene which is inert to chemicals

leaking out from the batteries. By the provision of
sleeve 8 according to the present invention, corrosion of
the casing is reduced thus saving its body.
Although the invention has been described with
reference to a preferred embodiment, it includes all
modifications falling within the scope of the invention
as herein after claimed.

WE CLAIM
1. A flashlight comprising a casing in which at least one
battery can be housed, a cap mounted at one end of the
casing and a reflector housing located at the other
end of the casing, a reflector housed in said housing
and having means for mounting a bulb, switch means
connected to said bulb and fixed on the outer surface
of the casing, and a glass lens mounted on the
reflector housing by means of a reflector ring,
characterized in that a phosphorescent ring is
interposed between the glass lens and the lens ring,
and a sleeve forming a protection shield is provided
inside the casing to surround the battery.
2. Flashlight as claimed in claim 1, wherein said
phosphorescent-ring is made of a material selected
from low-density polyethylene, high-density
polyethylene and high-density polypropylene, and a
phosphorescent pigment is provided on the said
phosphorescent ring.
3. Flashlight as claimed in claim 2, wherein said pigment
is a strontium-based pigment.
4. Flashlight as claimed in any of claims 1 to 3, wherein
said sleeve is removably located in said casing.

5. Flashlight as claimed in any of claims 1 to 4, wherein
said sleeve is made of a material which is inert to
chemicals leaking out of the batteries, said material
being selected from polyvinylchloride, high- density
polyethylene and high-density polypropylene.
6. A Flashlight substantially as herein described,
particularly with reference to the accompanying
drawings.

A flashlight comprising a casing (1) in which at least
one battery can be housed, a cap (2) mounted at one end (1A)
of the casing and a reflector housing (3) located at the
other end (1B) of the casing, a reflector (4) housed in said
housing and having means for mounting a bulb, switch means
(9) connected to said bulb and fixed on the outer surface of
the casing, and a glass lens (5) mounted on the reflector
housing by means of a reflector ring (6), is characterised in
that a phosphorescent ring (7) is interposed between the
glass lens (5) and the reflector ring (6), and a sleeve (8)
forming a protection shield is provided inside the casing to
surround the battery.