Friction gear transmission systems or components > Patents

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Class Information
Number: 476
Name: Friction gear transmission systems or components >
Description: This is the class for friction gear power transmission and elements thereof, such transmission being defined as an assembly of parts wherein rotary motion is transmitted from an input body to an output body by surface friction of rolling contact between parts associated with said input and output bodies.

Class Number	Class Name	No. of Patents
476/61	Condition responsive means to vary contact pressure	29
476/63	Ball actuator	4
476/62	Centrifugal actuator	0
476/1	Condition responsive ratio change	18
476/5	Centrifugal actuator	9
476/4	Electric or magnetic control	11
476/2	Fluid control	29
476/3	And electric or magnetic control	10
476/13	Cyclical output	2
476/11	Electric or magnetic control	25
476/9	Fluid control	33
476/10	Of toroidal transmission	153
476/15	Forward and reverse	10
476/25	Drive in forward direction by direct clutch	2
476/26	Driving and driven gears on angularly related axes	10
476/16	Flexible belt in drive train	6
476/17	Drive in one direction by direct engagement of belt pulleys	3
476/18	Variable speed in forward or reverse	7
476/24	Driving and driven gears on perpendicular axes	8
476/21	Intermediate idler between input and output gears	5
476/22	Idler between conoidal gears	4
476/23	Idler between flat discs	2
476/20	Stepped ratio change	0
476/19	With toothed gears in drive train	6
476/39	Friction gear includes idler engaging facing concave surfaces	5
476/40	Toroidal	231
476/46	Idler supported by roller bearing	98
476/45	Including spring means to bias friction surfaces into engagement	34
476/43	Including threaded means to adjust idler	7
476/44	Including toothed gearing to adjust idler	1
476/42	Plural toric cavities	154
476/41	With condition responsive means to vary contact pressure	46
476/36	Friction gear is ball	42
476/38	Variable ratio	42
476/37	With condition responsive means to vary contact pressure	35
476/64	Friction gear on shaft of movably mounted motor	16
476/67	Friction transmission or element	49
476/71	Flexible drive shaft	7
476/68	Friction gears on nonlinear angularly related axes	7
476/69	Perpendicular axes	6
476/72	Particular friction surface	49
476/73	Metallic	39
476/70	Roller bearing between gear and support	19
476/900	Overload release	10
476/27	Plural gearing in series	3
476/28	Flexible belt in drive train	6
476/29	Friction gearing is ratio change gearing	2
476/30	Friction gearing is stepless ratio change	8
476/33	Friction gearing is ratio change gearing	30
476/34	One gear is toothed bevel gear	9
476/35	One gear is worm gear	2
476/31	Plural friction gearing in series	6
476/32	Ratio change gearing and nonratio change gearing	1
476/6	Ratio change by expansion or compression of flexible friction surface	5
476/65	Spring urges contacting gears into engagement	22
476/66	Coil spring	22
476/47	Stepless ratio change	17
476/55	Driving and driven gears on nonlinear angularly related axes	34
476/56	Perpendicular	4
476/57	Disc and wheel	7
476/58	Disc on input shaft	11
476/50	Intermediate idler between driving and driven gears	25
476/51	Idler between conoidal gears	20
476/52	Idler is ring	10
476/53	Rigid	15
476/54	Idler between flat disks	11
476/49	Plural interdigitated disks on parallel axes	7
476/48	With condition responsive means to vary contact pressure	30
476/59	Stepped ratio change	7
476/60	Stepped motor shaft	2
476/7	With friction enhancing fluid	18
476/12	With indicator or alarm	5
476/8	With lubrication	64
476/14	With transmission cooling or heating means	5