Illumination – Self powered lamp – Cylindrical flashlight casing
Reexamination Certificate
1999-06-01
2001-09-04
O'Shea, Sandra (Department: 2875)
Illumination
Self powered lamp
Cylindrical flashlight casing
C362S202000, C362S204000, C362S206000, C362S186000, C362S189000, C362S158000
Reexamination Certificate
active
06283611
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a flashlight and more specifically to a flashlight having a switch and having a member integrally molded to a housing of the flashlight.
BACKGROUND OF THE INVENTION
Flashlights have been used in industrial and underwater environments for many years. Conventional industrial flashlights and underwater flashlights utilize waterproof plastic covers and include control switches operated through a flexible seal that seals the flashlight against entry of water, gases and small hazardous particles. The waterproof plastic covers are slip-on covers that are molded in a separate operation from fabrication of the housing of the flashlight, and are later slipped onto the housing. Frequently, the plastic covers and the flexible seals, which are separate from the covers, tend to wear and leak with age and use, and are easily damaged in certain industrial and underwater settings.
Additionally, divers and industrial users of flashlights often carry heavy equipment and wear bulky protective clothing. Further, such users may be in small spaces with poor lighting and poor visibility. All of these conditions tend to impair the user's mobility and dexterity. Conventional flashlights with conventional waterproof plastic covers also tend to become slippery and difficult to handle.
Moreover, in usage in a high pressure environment such as in diving, a conventional flashlight momentary actuator switch is pressed against by the pressure of the water and will actuate when taken below a certain depth. Thus, the flashlight turns on and remains on whether or not the diver wants it on. To avoid this problem by increasing the force necessary to actuate the momentary switch is not satisfactory because the necessary actuation force would have to be too great for convenient actuation. In fact, people who do not have very strong fingers are likely to be unable to operate such high-actuation-force momentary switch.
Therefore, it is highly desirable to provide a flashlight with a grip and an actuator seal, through which is operated a switch, molded contemporaneously as one piece to the housing of the flashlight to seal the flashlight, for example, against entry of water, gases, small particles and other contaminants. It is also desirable to provide a flashlight having a momentary switch that does not actuate under the force of external pressure.
SUMMARY OF THE INVENTION
In accordance with an aspect of the present invention, a flashlight is provided having a housing which has a front end, a rear end, and a wall. A molded member is molded into the housing to provide a gripping surface and an actuator for operating a switch. The gripping surface and the actuator are molded to the housing as one piece.
In accordance with another aspect of the present invention, a flashlight is provided having a housing and a bulb and a switch connected in circuit in the housing. An actuator in the housing operates the switch, wherein the actuator and the housing include respective cooperating engaging features to limit the travel of the actuator relative to the housing.
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Craft Charles W.
Sharrah Raymond L.
Alavi Ali
Dann Dorfman Herrell and Skillman, P.C.
O'Shea Sandra
Streamlight, Inc
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