PTO Manual of Classification for US patents

PTO Manual of Classification for US patents

What follows are the subclasses from one class of the Manual of Classification for US patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retrieve patent titles by entering the class/subclass in the box below.


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363-131 121-55A 14-.5
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Class Number: 279
 Class Title: CHUCKS OR SOCKETS

Subclass  Subclass
Number    Title

  2.01    EXPANDING
  2.02    .Collet type
  2.03    ..Fixed jaws and moving cam
  2.04    ..Fixed cam and moving jaws
  2.05    .Jaws mounted on flexible member; i.e., diaphragm
  2.06    .Fluid-pressure actuator
  2.07    ..Directly expanding jaws
  2.08    ...Jaw is expansible chamber; i.e., bladder type
  2.09    ..Expanding jaws via mechanical connection
  2.1     .Axially moving actuator
  2.11    ..Wedge
  2.12    ...Internal cone
  2.13    ...With jaw positively interlocked with wedge; e.g.,
              dovetail or T-slot
  2.14    ...With resilient means contacting nonresilient jaw
  2.15    ....Constricting band, annulus, or clip
  2.16    ..Toggle
  2.17    ..Axially compressible element expands radially
  2.18    ..Lever
  2.19    .Rotary actuator
  2.2     ..Clutch or self-actuating type
  2.21    .Jaw structure
  2.22    ..Resilient
  2.23    ..Ball or roller
  2.24    ..Pivoted
  3       VACUUM
  4.01    WITH FLUID-PRESSURE ACTUATOR
  4.02    .With measuring, indicating or control means
  4.03    .Jaw is expansible chamber; i.e., bladder type
  4.04    .Pneumatic type
  4.05    .Jaws mounted on flexible member; i.e., diaphragm
  4.06    .Socket type
  4.07    ..Collet
  4.08    ...Fixed cam and moving jaws
  4.09    ...Moving cam and fixed jaws
  4.1     .Radially reciprocating jaws
  4.11    ..Fluid pressure directly moves jaws
  4.12    ..Fluid pressure moves jaws via mechanical connection
  5       ANGULARLY ADJUSTABLE OR INDEXING
  6       ECCENTRIC
  7       THREADED GRIP
  8       LONGITUDINAL SCREW CLAMP
  9.1     SOCKET TYPE
  14      .Multiple alternative
  16      .Self-centering of floating
  17      ..Radially reciprocating jaws
  18      ..Transverse holder and setscrew
  19      .Lost motion
  19.1    ..Swinging external yoke or detent
  19.2    ...Rotary socket
  19.3    ..Rotary socket
  19.4    ..Spreading elementss
  19.5    ..Key retainer
  19.6    ..Sleeve type retainer
  19.7    ...Sleeve in socket
  20      .Fluid-conduit drill holding
  20.1    .Feed type
         .Self-grasping
         ..Yielding grasping jaws
  22      ...Ball or roller
  23.1    ...Spring jaws
  24      ..Yielding detent
         ..One-way-clutch type
  28      ...Wedge
  29      ...Side detent
  30      ....Ball or roller
  32      .Conical clamp threaded in socket
  33      .Transversely oscillating jaws
  34      ..Screw actuated
  35      .Pivoted jaws
         ..Moving-cam actuator
  36      ...Threaded cam sleeve
  37      ...Reciprocating cam sleeve
  38      ..Fixed cam and moving jaws
  39      ...Axial screw actuator
  40      ...Threaded-sleeve actuator
         .Resilient split socket
  42      ..Threaded cam sleeve
  43      ..Reciprocating cam sleeve
  43.1    ..Unitary
  43.2    ...Split at one end only
  43.3    ....Transverse screw actuator
  43.4    ....Cam actuator
  43.5    ...Split end to end
  43.6    ...With jaw pads or insert
  43.7    ..Nonresilient member biased by a resilient member
  43.8    ..Resilient member reinforced by another resilient member
  43.9    .With means to exclude contaminants; e.g., seal, shield
  44      .One movable side
  45      ..Sleeved
  46.1    .Spring biased jaws
  46.2    ..Unitary
  46.3    ...Split at one end only
  46.4    ...Split at both ends
  46.5    ...Split end to end
  46.6    ...With jaw pads or insert
  46.7    ..Nonresilient member biased by a resilient member
  46.8    ..Resilient member reinforced by another resilient member
  46.9    ..With means to exclude contaminants; e.g., seal, shield
         ..Moving-cam actuator
  47      ...Threaded sleeve and wedge
  48      ...Threaded cam sleeve
  49      ....Loose jaws
  50      ...Reciprocating cam sleeve
  51      ..Fixed cam and moving jaws
  52      ...Threaded-sleeve actuator
  53      ...Axial screw actuator
  54      ..Loose jaws
  55      .Loose jaws
         ..Moving-cam actuatorr
  56      ...Threaded cam sleeve
  57      ...Reciprocating cam sleeve
  58      ..Fixed cam and moving jaws
  59      ...Threaded sleeve and body
  60      .Obliquely guided reciprocating jaws
  61      ..Threaded sleeve and jaw
  62      ...Conical sleeve
  63      ..Threaded central cone and jaw
  64      ..Threaded sleeve and body
  65      ..Reciprocating jaw advancing sleeve
  66      .Radially reciprocating jaws
  67      ..Transverse-screw actuated
  68      ...Interlaced jaws
         ..Moving-cam actuator
  69      ...Threaded cam sleeve
  70      ...Threaded sleeve and wedge
  71      ...Rotary eccentric-cam sleeve
  72      ....Roller and rocking jaw
  73      ....Worm actuated
  74      ...Reciprocating cam sleeve
  75      ....Ball or roller jaws
  76      .Side detent
  77      ..Pivoted or rotary
  78      ...Sleeved
  79      ..Spring
  80      ...Sleeved
  81      ..Rotary cam sleeve
  82      ..Reciprocating sleeve
  83      ..Set screw
  84      ..U-clamp
  85      ..Plural bolt
  86      ..Single transverse bolt
  87      ..Longitudinal clamping wedge
  89      .Shouldered-tang holding
  90      ..Cap
  91      ...Screw
  93      .Tang offset within socket
  94      .Tang offset without socket
  95      .Bottomless
  96      ..Friction grip
  97      .Transverse pin
  99      .Screw threaded
  100     ..Nut lock
  101     ...Threaded sleeve
  102     .Friction grip
  103     ..Drill type
  104     .Barbed or pronged tang
  105     .Molded or cast-in tang
  105.1   .Adjustable length or size
  106     PIVOTED JAW
  107     .Cam-sleeve actuated
  108     .Internal-cone actuated
  109     .Toggle actuated
  110     RADIALLY RECIPROCATING JAWS
  111     .With indicator
  112     .Transverse-screw actuated
  113     ..Annular rack
  114     .Spiral cam or scroll actuatedd
  115     ..Worm
  116     ..Bevel pinion
  117     .Rack-and-pinion actuated
  118     .Toggle actuated
  119     .Lever actuated
  120     ..Internal cone
  121     .Wedge actuated
  122     .External-cone actuated
  123     .Jaws
  124     ..With means to facilitate jaw removal
  125     WITH SAFETY FEATURE
  126     WITH MEASURING, INDICATING OR CONTROL MEANS
  127     DOUBLE ACTING
  128     WITH MAGNETIC OR ELECTROSTATIC MEANS
  129     BY CENTRIFUGAL FORCE
  130     .To counterbalance jaws
  131     .To grip tool or workpiece
  132     COMPENSATION FOR ECCENTRICITY
  133     WITH CENTERING MEANS
  134     SEPARATE CHUCK-ACTUATING POWER SOURCE
  135     .Self-contained
  136     FOR GEAR OR SPLINE MOLDING
  137     MORE THAN ONE SET OF GRIPPING MEANS
  138     TORSION MANDREL
  139     JAWS MOUNTED ON FLEXIBLE MEMBER; I.E., DIAPHRAGM
  140     MEANS TO PREVENT JAW LOOSENING
  141     MEMBER APPLIES AXIAL FORCE COMPONENT
  142     ACCESSORY OR COMPONENT
  143     .Adapter
  144     ..Drive conversion
  145     ..For particular tool or workpiece
  146     .Sliding cam chuck actuator
  147     .Chuck key
  148     ..Safety feature; e.g., ejector, interlock
  149     ..Key holding or attaching means
  150     ..Nonseparable or built-in
  151     .Padded or cushioned jaw
  152     .Jaw insert
  153     ..Machinable jaw
  154     ...Locking or positioning means
  155     .Tool or workpiece ejector
  156     .Tool or work stop or locator
  157     .Protection means; e.g., cover, seal, overstress prevention, air
            blast
  158     MISCELLANEOUS
  *       ******************************
  *       CROSS-REFERENCE ART COLLECTIONS
  *       ******************************
  900     ADAPTED FOR AUTOMATIC TOOL CHANGER
  901     CHUCK OR CHUCK JAW CHANGING MEANS
  902     KEYLESS TYPE SOCKET
  903     NEEDLE ROLLER TYPE SOCKET
  904     QUICK CHANGE SOCKET
  905     .With ball detent
  906     SELF GRASPING SOCKET
  907     WASHER TYPE JAW OR ACTUATOR