This class includes patents for the production and transmission
of electric power and does not include any specific use to which
the power is put. (Note. The mere reference to or the inclusion
in a claim of an energy-consuming device, broadly stated--as, for
example, a "lamp", "heater",
or "tool"--is not sufficient to exclude the patent
from this class). It includes the following groups when the invention
includes some motor other than a dynamo electric machine in combination
with a dynamo electric machine:
Wherein a proximate function of the entire combination is
the generation of electricity by a dynamo-electric machine or such
generation combined with the transmission, storage, or control of
the current generated. There may be an additional function of production, transmission,
storage, or control of some power other than electrical.
Wherein a proximate function of the entire combination is
that of an electric motor. There may be an additional function of
production, transmission, storage, or control of some power other
than electrical.
Wherein the direction in which the energy flows (whether from
the dynamo electric machine to the motor or from the motor to the
dynamo-electric machine) is not essential to the invention. These
are mostly structural combinations. Includes the combination of
an internal-combustion engine and magneto unless the ignition system
is claimed. A magneto in combination with a timing means is regarded
as a subcombination of an internal-combustion engine.
Wherein the operation involves an interchange of energy between
the motor and the dynamo-electric machine and the dynamo electric
machine is not subsidiary to the motor, but may as well be a source
of external energy as the motor. A magneto connected with an ignition
system of an internal-combustion engine is considered subsidiary
to the internal-combustion engine.
Dynamo electric-machine starters for engines, the dynamo electric
machine being mechanically connected to the engine to drive the
same. Claims including an engine and starter, if the latter is
shown as a dynamo electric machine starter, are included. Dynamo
electric machines disclosed as starters for engines are included, even
through the engine is not claimed, provided the elements claimed
require for their operation a reversal of energy flow to and from
the engine.
Power production and transmission systems wherein the dynamo
electric machine above referred to charges a storage battery.
(1)
Note. Pumps operated by motors, which motors are controlled
by fluid-pressure or other fluid condition produced by the pump,
are excluded.
(2)
Note. All patents in this class disclosing dynamo electric
machines having a "rotary field and armature",
special internal-combustion-engine "ignition",
prime-mover "starting-motors", or "engine-control" features
may be found by searching the subclasses having these terms in their
titles.
(3)
Note. All patents disclosing batteries may be found by searching
subclasses 16, 41 and 50, and the "starting-motor" subclasses.
SECTION II - LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
A compilation of all types of motors will be found in the Notes
to the class definition of Class 60.
Machine Element or Mechanism,
and 192, Clutches and Power-Stop Control, for the combinations of this class where the starter
is merely a cranking means for the engine and the invention resides
in the gearing or clutch connecting the starter to the engine, respectively.
Internal-Combustion
Engines, for the combinations of this class where the starter
is merely a cranking means adjunctive to means modifying the operation
of an internal-combustion engine, and no other structure of the
starter of its relation to the engine is claimed than would be set
forth by the mere inclusion of the electric motor as an element
of the combination.
Prime-mover dynamo plants comprising a dynamo in a field-excitation
circuit of which is another dynamo for furnishing or controlling current
in the field-excitation circuit.
Electric control, Traction.
Electric-control prime-mover dynamo plants wherein a function
of the combination is to move a load. The load may be moved by
the prime mover or by a dynamo-electric machine operating as a motor.
The load moved is generally that moved by the traction-wheels of
a motor-vehicle.
Electric-control traction prime-mover dynamo plants having
as a function thereof the movement of a load by a dynamo electric
machine operating as a motor. The load moved is generally that
moved by the traction-wheels of a motor-vehicle.
Electric-control prime-mover dynamo plants having a dynamo
electric machine which acts as a traction-motor and in addition
a dynamo electric machine which acts as a motor for starting the
prime mover and as a generator.
Electric-control prime-mover dynamo plants having in addition
to a dynamo electric machine which acts as a traction-motor another dynamo-electric
machine which acts as a motor for starting the prime mover and as
a generator and a third dynamo electric machine which acts as a
generator.
Electric-control traction-motor prime-mover dynamo plants
having in addition to the traction-motor a starting and generating
dynamo and wherein one or more of the dynamo electric machines have
both field and armature rotatable.
Electric-control prime-mover dynamo plants including an
electric traction-motor, a starting and generating dynamo, and an
internal-combustion engine which is provided with special igniting
means.
Electric-control prime-mover dynamo plants including a dynamo
electric machine which acts as a traction-motor and a dynamo electric machine
which acts as a generator, one or both of said dynamo electric machines
having both field and armature rotatable.
Electric-control prime-mover dynamo plants including a dynamo
electric machine which acts as a traction-motor, a dynamo electric machine
which acts as a generator, and a battery.
Electric-control prime-mover dynamo plants including a dynamo
electric machine which acts as a traction-motor, a dynamo electric machine
which acts as a generator, and a prime mover provided with controlling
means therefor.
Electric-control prime-mover dynamo plants including a dynamo
electric machine which acts as a traction-motor and also as a motor
for starting the prime mover.
Electric-control prime-mover dynamo plants including a dynamo
electric machine which acts as a traction-motor, as a motor for
starting the prime mover, and as an electric generator.
Electric-control prime-mover dynamo plants including a dynamo
electric machine which acts as a traction-motor, as a motor for
starting the prime mover, and as an electric generator, the field
and armature of said machine being both rotatable.
Electric-control prime-mover dynamo plants including a dynamo
electric machine which acts as a traction-motor and as a motor for starting
the prime mover, the prime mover being provided with means for controlling
the same.
Electric-control traction prime-mover dynamo plants including
a dynamo electric machine which acts as a motor for starting the
prime mover and as a generator.
Electric-control traction prime-mover dynamo plants including
a dynamo electric machine which acts as a motor for starting the
prime mover and as an electric generator and having a field and
armature, both of which rotate.
Electric-control traction prime-mover dynamo plants including
a dynamo electric machine which acts as a motor for starting the
prime mover and as a generator and has a field and armature, both
of which rotate, and a prime mover provided with means for controlling
the same.
Electric-control traction prime-mover dynamo plants including
a dynamo electric machine which acts as a motor to start the prime
mover and as a generator and a prime mover which is provided with
means for controlling the same.
Electric-control traction prime-mover dynamo plants including
a dynamo electric machine which acts as a motor for starting the
prime mover and as a generator and an internal-combustion engine
which is provided with special igniting means.
Electric-control traction prime-mover dynamo plants including
a dynamo electric machine which acts as a motor for starting the
prime mover and in addition a dynamo electric machine which acts
as a generator.
Prime-mover dynamo plants including a prime mover which
operates a generator to supply current to a translating circuit
and provided with means for automatically starting the prime mover
when the translating circuit is closed or in response to predetermined
electrical conditions.
Electric-control prime-mover dynamo plants including a dynamo
electric machine which acts as a motor for starting the prime mover and
as a generator and in addition a dynamo electric machine which acts
as a generator.
Electric-control prime-mover dynamo plants including a dynamo
electric machine which acts as a motor for starting the prime mover and
as a generator, in addition a dynamo electric machine which acts
as a generator and an internal combustion engine which is provided with
special igniting means. The last-mentioned generator in general
furnishes current for the ignition.
Electric-control prime-mover dynamo plants including a dynamo
electric machine which acts as a motor for starting the prime mover and
as a generator, the prime mover having means for controlling the
same.
Electric-control prime-mover dynamo plants including a dynamo
electric machine which acts as a motor for starting the prime mover and
as a generator, together with an internal-combustion engine which
is provided with special igniting means.
Electric-control prime-mover dynamo plants including a dynamo
electric machine which acts as a motor for starting the prime mover and
in addition a dynamo electric machine which acts as a generator.
Electric-control prime-mover dynamo plants including a dynamo
electric machine which acts as a motor for starting the prime mover,
an additional dynamo electric machine which acts as a generator,
and an internal-combustion engine which is provided with special
igniting means.
Electric-control prime-mover dynamo plants wherein the prime
mover is provided with means for controlling the same. These are
generally prime-mover-operated generators, the prime mover being
automatically controlled in response to line-circuit conditions.
(1)
Note. The combination of an internal combustion engine idle
speed control and an electric generator in which is included (a)
any detail of the generator, (b) any relationship between a generator part
and an internal combustion engine, or (c) any control of the internal
combustion engine in response to the electricity produced by the
generator is found here.
Prime-mover dynamo plants wherein a function of the combination
is to move a load. The load may be moved by the prime mover or
by a dynamo electric machine operating as a motor. The load moved
is generally that moved by the traction-wheels of a motor-vehicle.
Prime-mover dynamo plants including a dynamo-electric machine
which acts as a motor for starting the prime mover and in addition
a dynamo electric machine which acts as a generator.
Prime-mover dynamo plants including electric batteries.
(1)
Note. For the remaining patents in this class which disclose
batteries, search subclasses 16 and 30 and the subclasses whose
titles disclose that they contain starting-motors.
Prime-mover dynamo plants including a dynamo electric machine
which operates as a generator and a turbine adapted to drive the same
mechanically connected thereto.
Hydraulic and Earth
Engineering,
subclasses 76+ for a method or apparatus for extracting power
from waves or tides involving significant hydraulic works and only
nominal recitation of the motor or dynamoelectric machine.
Hydraulic and Earth
Engineering,
subclasses 75+ for a method or apparatus for extracting power
from a moving fluid involving significant hydraulic work structure
and only nominal recitation of the fluid motor or dynamoelectric
machine.
Note: The Patent
and Trademark Depository Library Program (PTDLP) administers a nationwide
network of public, state and academic libraries designated as Patent and
Trademark Depository Libraries authorized by 35 U.S.C. 13 to: Disseminate
Patent and Trademark Information Support Diverse Intellectual Property
Needs of the Public. PTDL Contact Information
Note: For information/comments on electronic information products, such
as purchasing USPTO data, or to discuss system requirements for magnetic
tape products, contact:
KEY: =online
business system =fees =forms=help =laws/regulations =definition
(glossary)
The Inventors
Assistance Center is available to help you on patent
matters.Send questions about USPTO programs and services
to theUSPTO
Contact Center (UCC). You can suggest USPTO webpages
or material you would like featured on this section by E-mail
to the webmaster@uspto.gov.
While we cannot promise to accommodate all requests, your suggestions
will be considered and may lead to other improvements on the
website.
![[Search a list of Patent Appplications for class 290]](../as.gif)
CLASS 290,![[List of Patents for class 290 subclass 1]](../ps.gif)
1
=online
business system 
=fees 
=forms
=help 
=laws/regulations 
=definition
(glossary)