Electrical connectors – With insulation other than conductor sheath – Plural-contact coupling part
Reexamination Certificate
1999-07-30
2001-09-04
Nguyen, Khiem (Department: 2839)
Electrical connectors
With insulation other than conductor sheath
Plural-contact coupling part
C439S619000
Reexamination Certificate
active
06283797
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an improvement of the structure of a lamp base, particularly to an improvement of the structure of a lamp base of a lamp series (such as Christmas lamps). In normal conditions, a resistor sheet thereof is to be operated as a current bypass. When one lamp of the lamp series is open or loose, the resistor sheet will become shorted, therefore, the other lamps of the lamps series can operate as normal.
2. Brief Description of the Prior Art
The present invention relates to an improvement of a structure of lamp base, particularly to a lamp base having a resistor sheet to be operated as a bypass by the current or as a short element, enabling a lamp series to operate as normal even if one or more lamps thereof are shorted or loose.
As everyone knows, lamp series are popularly utilized to decorate a ceremony or a festival, particularly the Christmas lamps decorating in Christmas. However, the conventional lamp series will dysfunction if one lamp of the lamp series is opened because the tungsten wire is burnt out, or one lamp of the lamp series is loose because of vibration. It is troublesome and time-consuming to replace some of these lamps, and it is waste to use a whole new lamp series.
Due to the disadvantages of the conventional lamp series, the present invention then is created to improve the structure of the lamp base.
SUMMARY OF THE INVENTION
The object of the present invention then is to provide an improvement of the structure of the lamp base, and the improved lamp base according to the present invention includes a resistor sheet between the upper and lower protrusions on the copper connection plugs. Thus when the tungsten wire in the lamp is burnt out or the lamp is loose, the resistor sheet becomes shorted and the whole lamp series will light as usual.
Another object of the present invention is to provide an improvement of the structure of a lamp base, which imposes a resistor sheet to be operated as a bypass or a short element, so that the lamp series can be prevented from dysfunctioning while some lamps of the lamp series are burnt out or loose.
A more complete understanding of these and other features and advantages of the present invention will become apparent from a careful detailed description of certain embodiments illustrated in the accompanying drawings.
REFERENCES:
patent: 6053774 (2000-04-01), Lin
Dougherty & Troxell
Nguyen Khiem
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