Mechanical combinations, contrivances, or devices constituting portions of machines, instruments and apparatus and consisting of two or more fixed and movable parts so combined that the motion of one compels a completely controlled or constrained motion of the other according to a law of operation inherent in and depending on the nature of the combination, and also the elemental parts of such machines not provided for in other machine element classes.
LINES WITH OTHER CLASSES
This class is intended as a generic class for mechanism and machine parts not otherwise classified. Other machine element classes subgeneric hereto are Class 384, Bearings; Class 464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts.
This class does not include machines and instruments or apparatus claimed as such, for which see the appropriate art classes. It does not include the special tools, instruments, and subcombinations peculiar to the special arts and provided for in the classification of the art classes.
REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS
70, Locks, appropriate subclasses and particularly
174+, for machine elements combined with locks wherein the element or its associated structure is modified solely to accommodate the lock, or where the device is modified for the reception of a locking device, whether or not claimed.
73, Measuring and Testing, 488+, for a speed responsive device, per se.
92, Expansible Chamber Devices. For the line between Class 74 and Class 92, see References to Other Classes of the class definition of Class 92 under SEARCH CLASS 74.
123, Internal-Combustion Engines,
90.1+, and 188.1+, for valve operating mechanism.
173, Tool Driving or Impacting, appropriate subclass for subject matter directed to driving or impacting a tool, when such subject matter includes combined features peculiar to tool driving, but which does not include features limiting the subject matter to a specific tool art, such as specific shape of the work contacting portion of the tool, related tools, or an opposed work support. See References to Other Classes of the Class 173 class definition for a statement of the line with Class 74.
187, Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle, appropriate subclasses.
188, Brakes, appropriate subclasses and especially
105, 108 for brake operators.
192, Clutches and Power-Stop Control, appropriate subclasses and especially
242, Winding, Tensioning, or Guiding, appropriate subclasses.
251, Valves and Valve Actuation,
213+, for mechanical movement valve actuators.
267, Spring Devices, appropriate subclasses.
279, Chucks or Sockets, appropriate subclasses.
296, Land Vehicles: Bodies and Tops, various subclasses for bodies and tops having movable components which may be actuated by mechanical means.
384, Bearing, appropriate subclasses, and see (1) Note above.
464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts, see (1) Note supra.
474, Endless Belt Power Transmission Systems or Components, appropriate subclasses, and see particularly (5) Note under Lines With Other Classes in the class definition of Class 474.
475, Planetary Gear Transmission Systems or Components, for
planetary gear transmissions. 476, Friction Gear Transmission Systems or Components, for friction gear transmissions.
477, Interrelated Power Delivery Controls, Including Engine Control, for interrelated control between an engine and a transmission.