US PATENT CLASS 279
Class Notes
Current as of: June, 1999
Click HD for Main Headings
Click for All Classes
DEFINITION
Classification: 279/
This is the generic class for a chuck or a socket, per se, that is not elsewhere classified, and which includes a means for making a permanent or temporary and readily-releasable connection between a holder and an object, such as a tool, work-piece, or rod-like body, where the gripping means or seat is on or within the holder or base member.
This class includes a recessed handle, a spindle, and the like, adapted to receive a tool, a tang, a rod or like body, whether permanently or in such manner as to be readily released.
This class also includes a typical machine-chuck with jaws and a tool-holding socket with a detent to grip the object held against a torsional strain, a rock-drill chuck, a punch-holder, etc., where no torsional strain is applied, and in general any socketed holder and any symmetrical clamping device which may be deemed to be a receiver for positively holding an object against relative movement in at least one direction, generally in symmetrical relation concentric with the holding member, but in some instances eccentric.
REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS
12, Boot and Shoe Making,
103, and 123, for a chuck in a tool specialized to that art.
16, Miscellaneous Hardware,
18+, and particularly subclass 43, for a caster having socket structure. 24, Buckles, Buttons, Clasps, etc., appropriate subclasses, for a clasp, a fastener or holder not belonging to any art, but novel only to its structure.
29, Metal Working,
559, for a process of work holding, per se.
30, Cutlery,
329+, for a hand cutter having a blade holder.
69, Leather Manufactures,
19+, and 20, for a chuck in a tool specialized to that art.
81, Tools,
300+, for a pair of pliers and a plural-handle wrench, subclass 487, for a hand held holder or a holder having a clamp, and subclasses 52+, for a single-handle wrench or screwdriver.
82, Turning,
148, and 165-170, for a chuck in a tool specialized to that art. 142, Wood Turning,
48, and 49, for a tool rest and a work support, 53, for a lathe center, 54, for a hollow mandrel, 55 for a turning machine attachment, 56, for a tool, and 57, for a work holder, all of which may have a chuck or a socket.
221, Article Dispensing,
239, and 294, for an article dispenser not otherwise provided for, which delivers dispensed articles to a clamp or a hold down, and subclasses 201+, for a device in which a gripping type discharge assistant is effective to remove articles from a source of supply.
226, Advancing Material of Indeterminate Length,
158, for a reciprocating gripper which advances material longitudinally.
248, Supports,
637+, for a machinery support, and subclasses 500+ for a hold down.
269, Work Holders, appropriate subclasses. Class 269 is the residual locus for patents to a device for clamping, supporting and/or holding an article in position to be operated on or treated. See notes thereunder for other related loci.
294, Handling: Hand and Hoist-Line Implements, for a holding device and a grappling element combined with a handle, a terminal element, or an attachment peculiarly adapted for engaging or supporting an article or a material for handling or manipulation purposes, especially
99.2, for a tweezer or a pair of tongs.
401, Coating Implements With Material Supply, 49+, for a mechanical pencil including a chuck, particularly
subclass 53, for a mechanical pencil including a chuck and means to limit the projection of a piece of lead (graphite); subclass 54, for a chuck resiliently supported in a pencil to cushion the lead; subclasses 65+, for a chuck included in step-by-step lead feed of a mechanical pencil; and subclasses 92+, residual for a mechanical pencil including a chuck.
407, Cutters, for Shaping,
66+, for a holder having a seat for an inserted cutting tool.
408, Cutting by Use of Rotating Axially Moving Tool,
238+, for a tool-holder or a chuck particularly adapted to be utilized in the operation of that class.
409, Gear Cutting, Milling, or Planing,
232+, for a milling cutter spindle holder, subclass 234, for a milling cutter holder, and subclasses 345+, for a planing machine including a chuck.
433, Dentistry,
127+, for a dental handpiece with a tool holding chuck structure.
440, Marine Propulsion,
106+, for an oarlock. 470, Threaded, Headed Fastener, or Washer Making: Process and Apparatus,
73+, for means for closing a threading-die analogous to those used in closing chuck-jaws, subclass 58, for a work-holder used in screw threading, except as provided for in Class 408, subclasses 123+, for a work-holder or a socket used for mounting die stocks, and subclasses 141+ for a tap holder.
483, Tool Changing, generally for a process or apparatus including a tool transfer means combined with a tool support or storage means.
623, Prosthesis (i.e., Artificial Body Members), Parts Thereof, or Aids and Accessories Therefor,
57+, for a chuck or socket used in mounting an artificial hand or an article on an artificial arm.