| | CLASS NOTES |
| 1 | DF | CONTROL FOR FORWARD AND REVERSE {3} |
| 8 | DF | PULLEY WITH BELT-RECEIVING GROOVE FORMED BY DRIVE FACES ON RELATIVELY AXIALLY MOVABLE COAXIAL CONFRONTING MEMBERS (E.G., EXPANSIBLE CONE PULLEY, ETC.) {13} |
| 47 | DF | PULLEY WITH EXPANSIBLE RIM MEANS OR PULLEYS WITH ALTERNATELY USEABLE NESTABLE RIMS {2} |
| 58 | DF | POWER OUTPUT PULLEY SELECTIVELY SHIFTABLE TO DIFFERENT POWER OUTPUT LOCATIONS RELATIVE TO INPUT PULLEY {1} |
| 61 | DF | POWER INPUT AND OUTPUT PULLEYS ON NONPARALLEL AXES {1} |
| 64 | DF | PLURAL TURNS OF SAME BELT ABOUT PULLEY AXIS {2} |
| 69 | DF | CONTROL FOR VARIABLE INPUT TO OUTPUT SPEED-RATIO {7} |
| 84 | DF | PLURAL BELTS OR PLURAL OUTPUT LOADS {3} |
| 90 | DF | STATIC ELECTRICITY ELIMINATOR |
| 91 | DF | STRUCTURE FACILITATING LUBRICATION OF BELT, PULLEY, OR GUIDE ROLL |
| 92 | DF | CLEANING DEVICE FOR BELT, PULLEY, OR GUIDE ROLL |
| 93 | DF | FLUID-IMPELLING MEANS (E.G., FOR COOLING, ETC.) |
| 94 | DF | RESILIENT CONNECTION BETWEEN PULLEY OR GUIDE-ROLL RIM AND MOUNT |
| 95 | DF | HUB FORMED IN SECTIONS AND SEPARABLE BY MOVING SECTIONS RADIALLY APART (E.G., SPLIT PULLEY TO FACILITATE INSTALLATION, ETC.) {1} |
| 100 | DF | AUXILIARY ENDLESS BAND FOR GUIDING BELT OR HOLDING BELT ENGAGED WITH PULLEY |
| 101 | DF | MEANS FOR ADJUSTING BELT TENSION OR FOR SHIFTING BELT, PULLEY OR GUIDE ROLL {11} |
| 139 | DF | PULLEY ENGAGES EXTERIOR SURFACE OF BELT |
| 140 | DF | BELT GUIDE HAS SURFACE IN SLIDING CONTACT WITH BELT |
| 141 | DF | PULLEY HAVING CIRCUMFERENTIALLY SPACED PORTIONS OF DRIVE FACE SPACED UNEQUAL DISTANCES FROM PULLEY AXIS OF ROTATION (E.G., ELLIPTICAL PULLEY, ETC.) |
| 142 | DF | MAGNETIC ATTRACTION BETWEEN BELT AND PULLEY |
| 143 | DF | FABRIC DRIVE FACE ON BELT AND PULLEY |
| 144 | DF | GUARD OR HOUSING FOR BELT OR PULLEY {2} |
| 148 | DF | SYSTEM INCLUDING SPACED PULLEYS INTERCONNECTED BY A BELT {2} |
| 151 | DF | AUXILIARY MEMBER REMOVABLY ATTACHED TO PULLEY OR GUIDE ROLL FOR PREVENTING LATERAL DISPLACEMENT OF BELT |
| 152 | DF | POSITIVE DRIVE PULLEY OR GUIDE ROLL {6} |
| 166 | DF | FRICTION DRIVE PULLEY OR GUIDE ROLL {11} |
| 200 | DF | MOBIUS BELT |
| 201 | DF | BELT HAVING DRIVE SURFACES ON OPPOSITE SIDE EDGES OF STACKED PLATES HAVING PLANAR FACES PERPENDICULAR TO DIRECTION OF BELT MOVEMENT |
| 202 | DF | POSITIVE DRIVE BELT {3} |
| 237 | DF | FRICTION DRIVE BELT {14} |
| 273 | DF | MISCELLANEOUS |
| | ****************************** |
| | CROSS-REFERENCE ART COLLECTIONS |
| | ****************************** |
| 900 | DF | PHASE VARIATOR |
| 901 | DF | PULLEY OR GUIDE ROLL FOR TRACK OF ENDLESS TRACK VEHICLE |
| 902 | DF | PARTICULAR CONNECTION BETWEEN RIM AND HUB |
| 903 | DF | PARTICULAR CONNECTION BETWEEN HUB AND SHAFT |
