US PATENT SUBCLASS 343 / 757
.~ With means for moving directive antenna for scanning, sweeping or orienting

Current as of: June, 1999
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343 /   HD   COMMUNICATIONS: RADIO WAVE ANTENNAS

700 R  DF  ANTENNAS {58}
757.~ With means for moving directive antenna for scanning, sweeping or orienting {6}
758  DF  .~.~> Plural relatively movable
759  DF  .~.~> Spiral motion
760  DF  .~.~> With signal, indicator or alarm
761  DF  .~.~> Reflector and antenna relatively movable
762  DF  .~.~> Wave guide type antenna
763  DF  .~.~> Rotary or rotary oscillatory motion {3}

DEFINITION

Classification: 343/757

(under subclass 700) Subject matter wherein the complete antenna is movably (e.g., pivoted or rotatably) supported for motion as a unit or wherein the reflector and antenna are supported to be relatively movable, together with structure that effects or is peculiarly adapted to effect motion of the antenna or relative motion between the antenna and reflector in such fashion that the radiation pattern is scanned, swept or oriented.

(1) Note. An adjustable support for an antenna or reflector which permits an antenna beam to be scanned, swept or oriented is classified in subclasses 880+ below. For classification in this subclasses (757+), there must be some structure which positively acts, or may be actuated to produce this beam scanning, sweeping or orienting. Examples of such structure are a motor, crank or handle, or a mechanism connecting such motor, crank, or handle to an antenna or reflector.

(2) Note. For classification in this subclass the entire antenna must move on its support or there must be relative motion between the antenna and reflector on their support or supports. Mere motion of a part of the antenna, such as a mechanical change in the relative position of antenna parts in the coupling path for such purposes as switching or changing the electrical characteristic of the radiated energy, is not sufficient for classification here, but would involve such subclasses as 854 and 876, below.

(3) Note. An adjustable support together with means for effecting positive adjustment of the antenna for purposes other than scanning, sweeping or orienting, such as raising or lowering the antenna is not classified here, but in subclasses 880+ below.

(4) Note. Sweeping an antenna beam usually involves moving the antenna beam repeatedly along a single line (which may be straight or curved) in space. Scanning such a beam usually involves repeatedly moving the beam over an area in space. Orienting usually involves mere change of the direction of the antenna beam.

(5) Note. Where in addition to directional modification of the beam means are claimed whereby a distinctive signal or signals associated with the received radio wave energy and indicating or denoting direction are involved, classification is not in this subclass but in Class 342, subclasses 350+, above. (6) Note. For classification in this and indented subclass, there must be recited in the claims antenna details relating to the signal energy path, for example, details of the active antenna or reflector such as dipole antenna, parabolic reflector. The recitation of both an antenna and reflector by name only in a claim is considered a recitation of details of the radiant energy structure for classification in this subclass. Recitation of an antenna by name only or a reflector by name only in combination with means for moving the antenna or reflector is not sufficient for classification in this subclass but is classified in the appropriate class taking the means for moving, such as Class 74, Machine Element or Mechanism, for mechanical motions, Class 318, Electricity: Motive Power Systems, for motor controls, Classes 211, Supports: Racks, and 248, Supports, for adjustable supports.

SEE OR SEARCH THIS CLASS, SUBCLASS:

754, for antennas with spaced or external radio wave refractor, e.g., lens, with means for scanning, sweeping or orienting.

768, for slot type antennas with periodic control of the slot or coupling which may involve scanning, sweeping or orienting.

777, for plural wave guide type antennas with control of the individual antennas which may involve scanning, sweeping or orienting.

816, for plural balanced doublets with a coupling network wherein the coupling network may be controlled for scanning, sweeping or orienting.

839, for antennas wherein the reflector and active antenna are relatively movable.

854, for plural antennas with adjustable coupling networks which may involve scanning, sweeping or orienting.

869, for loop type antennas with rotatable supports.

876, for antennas with switching between the antennas and lines which may involve scanning, sweeping or orienting.

882, for antenna with pivoted or rotatable supports.

SEE OR SEARCH CLASS 74, Machine Element or Mechanism, particularly

1, for mechanical movements for antennas. See also (6) Note, above.

174, Electricity: Conductors and Insulators,

86, for conduits, cables and conductors with angularly movable or adjustable joints.

211, Supports: Racks, and 248, Supports, for supports which permit movement of the article supported. See also (6) Note, above.

318, Electricity: Motive Power Systems, for motor controls. See also (6) Note, above.

333, Wave Transmission Lines and Networks,

245+, for long line elements and components which may include rotatable couplings.

342, Communications: Directive Radio Wave Systems and Devices (e.g., Radar Radio Navigation),

1, 205 and subclasses 350+ for reflected or otherwise returned wave system and directly radio wave energy systems, respectively, which may involve means for moving a directive antenna.

362, Illumination, for illuminating means, particularly 37+, for dirigible light supports.