Illumination – Self powered lamp – With hermetic seal
Reexamination Certificate
2002-11-15
2004-07-13
Husar, Stephen F (Department: 2875)
Illumination
Self powered lamp
With hermetic seal
C362S202000
Reexamination Certificate
active
06761464
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a flashlight that has two seals respectively engaged between the cap and the tubular body, and between the lens and the cap. Each seal has a dumb-bell shaped cross section.
BACKGROUND OF THE INVENTION
A conventional flashlight is shown in
FIG. 1
generally includes a body
11
with an open end
14
and a threaded section
12
is defined in an outer periphery of the open end
14
. Two batteries
15
are received in the body
11
and a bulb assembly
10
is received in the open end
14
and electrically connected to the battery
15
. A cap
13
with a rotatable collar
16
is threadedly connected to the threaded section
12
. The flashlight has no proper sealing feature so that moisture, rain drop, dust or sands may enter the bulb assembly
10
via the gaps between threaded section
12
and the cap
13
. The dust or sands make the cap
13
to be stocked and difficult to be rotated.
The present invention intends to provide a sealing device for a flashlight and includes a seal that has dumb-bell shaped cross section and the seal is clamped between the cap and the body of the flashlight so as to prevent rain drop, dust and sands entering the threads.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a flashlight which comprises a tubular body having an open end so as to receive a power supply device via the open end. A cap is connected to the open end and has a groove defined in an inner periphery thereof A bulb and reflection disk assembly is engaged with the cap and a lens is engaged with the cap. A seal is engaged with the groove and mounted to an outer periphery of the open end of the tubular body.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
REFERENCES:
patent: 4527223 (1985-07-01), Maglica
patent: 5021934 (1991-06-01), Hou
patent: 5349506 (1994-09-01), Maglica
patent: 6158873 (2000-12-01), Griffiths
patent: 6283611 (2001-09-01), Sharrah et al.
Husar Stephen F
Rosenberg , Klein & Lee
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