Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Reexamination Certificate
1999-05-05
2001-05-15
Dinkins, Anthony (Department: 2831)
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
C361S309000, C361S540000
Reexamination Certificate
active
06233133
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention is related to an improvement in the structure of a capacitor.
2. Description of the Prior Art
An arrangement of conductors and dielectrics used to secure a capacitance for the storage of electrical energy in the electric field. The essential feature of all capacitors is a system of conductors separated by dielectrics. Modem capacitors, both fixed and variable, are of many forms, such as those of metal foil and paraffin paper dielectric, metal foil and mica dielectric, metal plates with vacuum, compressed gases or air as dielectric and aluminum and tantalum electrolytics. The capacitor with metal foil and dielectric is widely used in air conditioners, washing machines, electric fans, lighting systems, ignition systems, motor starting systems, and the like. Nevertheless, the conventional capacitor of such type is easily damaged by pulses thereby making it unfit for practical use.
It has been found that the conventional capacitor is often damaged by pulses under the following conditions:
1. Directly struck by thunder;
2. Improper grounding;
3. Magnetism;
4. Indirect struck by thunder;
5. Switching on or off; and
6. Static.
Therefore, it is an object of the present invention to provide an improvement in the structure of a capacitor which can obviate and mitigate the above-noted drawbacks.
SUMMARY OF THE INVENTION
This invention is related to an improvement in the structure of a capacitor.
It is the primary object of the present invention to provide an improvement in the structure of a capacitor which can prevent the capacitor from being damaged by pulses.
It is another object of the present invention to provide an improvement in the structure of a capacitor which is durable in use.
According to a preferred embodiment of the present invention, a capacitor includes a housing, a connector disposed with in the housing and having an end provided with a first U-shaped terminal and another end provided with a second U-shaped terminal, the first U-shaped terminal having a first leg extending downwardly from a lower end of the first U-shaped terminal, the second U-shaped terminal having a second leg extending downwardly from a lower end of the second U-shaped terminal, an ebonite member mounted between the first and second U-shaped terminals, a grounding terminal arranged intermediate of the ebonite member, an insulating material mounted between the first leg of the U-shaped terminal and the second leg of the second U-shaped terminal, a first voltage sensitive resistor having a leg soldered to the first U-shaped terminal and another leg soldered to a lower end of the grounding terminal, and a second voltage-sensitive resistor a leg soldered to the second terminal and another leg soldered to the grounding terminal.
The foregoing objects and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts. Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.
REFERENCES:
patent: 5412532 (1995-05-01), Nishimori et al.
patent: 5821672 (1998-10-01), Oyama
A & J
Dinkins Anthony
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