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.
Enter a class/subclass code here to get a list of patent titles. Use
any of the following forms:
363-131 121-55A 14-.5
that is, no embedded spaces, class and subclass seperated by a dash, and any
subclass letters capitalized. Currently Design Patent titles (those in the
classes of the form Dxx.yy) are not retreivable.
Class Number: 476 Class Title: FRICTION GEAR TRANSMISSION SYSTEMS OR COMPONENTS Subclass Subclass Number Title 1 CONDITION RESPONSIVE RATIO CHANGE 2 .Fluid control 3 ..And electric or magnetic control 4 .Electric or magnetic control 5 .Centrifugal actuator 6 RATIO CHANGE BY EXPANSION OR COMPRESSION OF FLEXIBLE FRICTION SURFACE 7 WITH FRICTION ENHANCING FLUID 8 WITH LUBRICATION 9 FLUID CONTROL 10 .Of toroidal transmission 11 ELECTRIC OR MAGNETIC CONTROL 12 WITH INDICATOR OR ALARM 13 CYCLICAL OUTPUT 14 WITH TRANSMISSION COOLING OR HEATING MEANS 15 FORWARD AND REVERSE 16 .Flexible belt in drive train 17 ..Drive in one direction by direct engagement of belt pulleys 18 .Variable speed in forward or reverse 19 ..With toothed gears in drive train 20 ..Stepped ratio change 21 ..Intermediate idler between input and output gears 22 ...Idler between conoidal gears 23 ...Idler between flat discs 24 ..Driving and driven gears on perpendicular axes 25 .Drive in forward direction by direct clutch 26 .Driving and driven gears on angularly related axes 27 PLURAL GEARING IN SERIES 28 .Flexible belt in drive train 29 ..Friction gearing is ratio change gearing 30 ...Friction gearing is stepless ratio change 31 .Plural friction gearing in series 32 ..Ratio change gearing and nonratio change gearing 33 .Friction gearing is ratio change gearing 34 .One gear is toothed bevel gear 35 .One gear is worm gear 36 FRICTION GEAR IS BALL 37 .With condition responsive means to vary contact pressure 38 .Variable ratio 39 FRICTION GEAR INCLUDES IDLER ENGAGING FACING CONCAVE SURFACES 40 .Toroidal 41 ..With condition responsive means to vary contact pressure 42 ..Plural toric cavities 43 ..Including threaded means to adjust idler 44 ..Including toothed gearing to adjust idler 45 ..Including spring means to bias friction surfaces into engagement 46 ..Idler supported by roller bearing 47 STEPLESS RATIO CHANGE 48 .With condition responsive means to vary contact pressure 49 .Plural interdigitated disks on parallel axes 50 .Intermediate idler between driving and driven gearss 51 ..Idler between conoidal gears 52 ...Idler is ring 53 ....Rigid 54 ..Idler between flat disks 55 .Driving and driven gears on nonlinear angularly related axes 56 ..Perpendicular 57 ...Disc and wheel 58 ....Disc on input shaft 59 STEPPED RATIO CHANGE 60 .Stepped motor shaft 61 CONDITION RESPONSIVE MEANS TO VARY CONTACT PRESSURE 62 .Centrifugal actuator 63 .Ball actuator 64 FRICTION GEAR ON SHAFT OF MOVABLY MOUNTED MOTOR 65 SPRING URGES CONTACTING GEARS INTO ENGAGEMENT 66 .Coil spring 67 FRICTION TRANSMISSION OR ELEMENT 68 .Friction gears on nonlinear angularly related axes 69 ..Perpendicular axes 70 .Roller bearing between gear and support 71 .Flexible drive shaft 72 .Particular friction surface 73 ..Metallic * ****************************** * CROSS-REFERENCE ART COLLECTION * ****************************** 900 OVERLOAD RELEASE