US PATENT SUBCLASS 331 / 62
WITH OSCILLATOR CIRCUIT PROTECTIVE MEANS


Current as of: June, 1999
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331 /   HD   OSCILLATORS

62WITH OSCILLATOR CIRCUIT PROTECTIVE MEANS


DEFINITION

Classification: 331/62

(under the class definition) Subject matter wherein the oscillator is provided with means to protect the oscillator circuit or elements thereof from damage due to some condition or malfunction of the oscillator circuit or power supply therefor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

63, for oscillators provided with means to protect operating personnel or others who may come into contact with exposed portions of the oscillator from electrical shock.

67, for oscillators provided with electromagnetic or electrostatic shield means to prevent undesirable couplings between elements of the oscillator caused by fields generated within the oscillator circuit or to prevent external fields from influencing the oscillator.

68+, for oscillators having outer casings or housings to protect the oscillator from damage due to external mechanical forces.

70, for oscillators provided with means to modify the temperature of the oscillator or elements thereof, wherein the means may be for the purpose of cooling the oscillator or elements thereof to prevent damage thereto that would result if the oscillator or elements thereof were permitted to overheat. 182+, for oscillators having means for controlling or maintaining the amplitude level of the generated oscillations and wherein the invention is not primarily for protecting the oscillator from overload.

186, for oscillators having a regulated source of power or bias and wherein the invention is not primarily for protecting the oscillator from damage due to excessive bias potential.

SEE OR SEARCH CLASS

307, Electrical Transmission or Interconnection Systems,

326+, for electrical systems in general having self-protective, safety or limit control features.

361, Electricity: Electrical Systems and Devices,

1+, for safety and protection systems for electrical devices and equipment in general. See the search notes, and under "SEARCH CLASS" of subclasses 92+ of Class 307 and subclasses 1+ of Class 361 as to further fields of search for protective systems for specific electrical devices and systems.