Illumination – Self powered lamp – Cylindrical flashlight casing
Patent
1992-12-28
1994-05-31
Yeung, James C.
Illumination
Self powered lamp
Cylindrical flashlight casing
362189, F21L 700
Patent
active
053174909
ABSTRACT:
A flashlight incorporating operative components that include resilient parts, made of compressable rubber or a polymer, is used for providing the opening or closing of the circuitry for the flashlight to energize or de-energize it, when manual pressure is applied to the back end or sealing cap for the device. The flashlight includes its casing member, with a light exposing end, having an aperture through which the bulb projects its illumination, and a back or battery insertion end, with a sealing means or end cap for closing the casing at this location. A light source, such as a bulb, a battery, a connector for joining the light source to the battery, a fixed contact member integral of the battery, a movable contact member for opening and closing its circuitry, and a resilient member arranged intermediately between the movable contact member and the battery, such that when manual pressure is applied, the resilient member collapses, providing for contact between the electrical components for the flashlight to achieve its illumination. The resilient member being an O-ring or a sleeve, and the connector cooperates with the sleeve to make permanent contact with the movable contact member during assembly of the flashlight.
REFERENCES:
patent: 2070316 (1937-02-01), Recker
patent: 2666894 (1954-01-01), Babernitsh
patent: 3742207 (1973-06-01), Strauss
patent: 4303970 (1981-12-01), Robertson
patent: 4774643 (1988-09-01), McGinnis et al.
patent: 4905129 (1990-02-01), Sharrah
Denk Paul M.
Mocap Incorporated
Yeung James C.
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