US PATENT SUBCLASS 318 / 119
RECIPROCATING OR OSCILLATING MOTOR

Current as of: June, 1999
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318 /   HD   ELECTRICITY: MOTIVE POWER SYSTEMS

119RECIPROCATING OR OSCILLATING MOTOR {4}
120  DF  .~> Stopping after predetermined number of reciprocations or cycles (including single cycle)
121  DF  .~> Having means to produce a progressing or traveling motor field flux
122  DF  .~> Plural, diverse or diversely controlled motor windings {2}
126  DF  .~> Energizing winding circuit control {5}

DEFINITION

Classification: 318/119

(under the class definition) Subject matter in which the motor is a reciprocating or oscillating type of electric motor.

(1) Note. See the class definition for a definition of reciprocating or oscillating type motor.

(2) Note. Either of the terms "reciprocating" or "oscillating" when used separately in the titles and definitions in this class will be construed to include the other, unless clearly indicated otherwise.

(3) Note. For motor systems having the conventional rotary electric motor constructed for unlimited degree of movement in a given direction combined with means for periodically reversing the motor (e.g., reversed (1) in response to a "limit of travel" in either direction of rotation, (2) under control of some time-measuring mechanism, (3) after a predetermined number of revolutions, (4) etc.), see appropriate subclasses hereinafter under "Reversing, periodic or repetitious", subclass 281. Where the "motor" has means for actuating in one direction only (including arrangements whereby electric means or gravity and electric means can effect actuation in the one direction only) and consequently, the return movement must be effected manually or by some nonmotor means; classification is not herein. For example, a motor system having a motor having a vertically disposed and freely movable element and electrical means for effecting an upward motion only and wherein gravity can effect the return or downward motion; classification is herein. However, where the movable member of the motor is horizontally disposed and no energy storing means, such as a spring or compressible gas chamber, is provided to return the member after actuated by

electric means (which are effective in one direction only), classification is not herein, but is classified as "linear motor" system or as an electromagnet with armature.

SEE OR SEARCH THIS CLASS, SUBCLASS:

14, for reciprocating or oscillating motors combined with motion-converting mechanisms. (For example, the combination of a reciprocating electric motor supply and/or control system combined with means for converting the reciprocatory motion of the motor to a rotary motion will be found in subclass 14). 21, for this subject matter where the motor system is a follow-up system having a reciprocating or oscillating motor.

35, for this subject matter where the motor system has the combination of an oscillating or reciprocating motor and another motor having a different type of motor (e.g., combination of a reciprocating and a rotary motor).

37, for this subject matter where the system includes a plurality of reciprocating or oscillating motors.

116+, for this subject matter where the motor is a magneto-striction type of motor in which periodic magnetization of the core part effects periodic dimensional changes in the core part thus resulting in reciprocating motion of the core part.

135, for motor systems having a linear-movement motor.

159+, for motor system which has the rotor element biased against rotation by virtue of which the rotor element is returned when the motor is deenergized or the energization is reduced. 281+, see (3) Note above.

SEE OR SEARCH CLASS

91, Motors: Expansible Chamber Type, appropriate subclasses for reciprocating and oscillating type expansible chamber motors.

123, Internal-Combustion Engines,

1, 3 and 18+ and 198+ for internal combustion engines of the reciprocating type.

310, Electrical Generator or Motor Structure,

15, for reciprocating electric motor structure, per se, and subclass 36 for oscillating electric motor structure, per se. 322, Electricity: Single Generator Systems,

3, for reciprocating and/or oscillating generator systems.

335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,

220, for electromagnets with armatures.

416, Fluid Reaction Surfaces (i.e., Impellers),

64, for impellers of the reciprocating type and subclass 79 for impellers of the oscillating type.