| Class Number |
Class Name |
No. of Patents |
| 475/900 |
Brake for input or output shaft |
53 |
| 475/254 |
Condition responsive control |
33 |
| 475/258 |
Centrifugally controlled clutch or brake |
24 |
| 475/262 |
Axially engaged friction clutch |
12 |
| 475/260 |
Centrifugal brake control |
9 |
| 475/259 |
One-way clutch or brake |
12 |
| 475/261 |
Positive clutch |
3 |
| 475/256 |
Downshift responsive to high speed limit |
13 |
| 475/255 |
Eccentrically weighted planet |
16 |
| 475/263 |
Overload release |
59 |
| 475/264 |
Spring applied friction drive establishing means |
22 |
| 475/265 |
Drive establishing means is friction brake |
27 |
| 475/257 |
Speed responsive control adjusted or opposed by torque |
27 |
| 475/266 |
Stepped, torque responsive ratio change |
24 |
| 475/267 |
With flywheel or centrifugal weight control |
34 |
| 475/268 |
With planet pinion axis at angle to axis of mating gear (e.g., bevel gears) |
12 |
| 475/14 |
Cyclical or intermittent drive |
37 |
| 475/17 |
Multilated or noncircular gear in drive train |
22 |
| 475/15 |
Plural outputs |
15 |
| 475/16 |
With means to adjust cycle or drive during operation |
34 |
| 475/220 |
Differential planetary gearing |
61 |
| 475/230 |
Bevel gear differential |
261 |
| 475/243 |
Output gear rotatable relative to axial support shaft |
10 |
| 475/244 |
Support shaft coupled to other output gear |
6 |
| 475/245 |
With roller bearing between output gear and shaft |
9 |
| 475/242 |
Separate planet pinions or separate tooth set on same pinion for each output |
9 |
| 475/231 |
With means to limit overspeed of one output (e.g., lock-up clutch) |
235 |
| 475/234 |
By axial movement of output gear |
34 |
| 475/235 |
With spring bias on gear or clutch |
38 |
| 475/232 |
Centrifugal actuator |
21 |
| 475/233 |
Lock-up clutch between pinion and pinion carrier |
34 |
| 475/237 |
Manual actuator |
46 |
| 475/238 |
Friction clutch |
12 |
| 475/239 |
Plate clutch |
26 |
| 475/236 |
Particular gear shape or tooth interaction limits overspeed |
16 |
| 475/240 |
Spring bias on overspeed limiting means |
28 |
| 475/241 |
Helically coiled spring |
25 |
| 475/246 |
With roller bearing between gear and its support |
47 |
| 475/247 |
Ball bearing |
16 |
| 475/221 |
Differential or nondifferential planetary combined with differential (e.g., two differentials) |
248 |
| 475/223 |
Including means to selectively apply rotational power to only one output |
49 |
| 475/224 |
By braking other output |
13 |
| 475/226 |
Planet pinion is worm gear |
31 |
| 475/227 |
And spur gear on pinion |
38 |
| 475/248 |
Spur gear differential |
106 |
| 475/252 |
Intermeshing planet pinions |
111 |
| 475/251 |
Pinion axis at angle intersecting axis of output |
7 |
| 475/249 |
With means to limit overspeed of one output |
157 |
| 475/250 |
Manual actuator |
18 |
| 475/253 |
With roller bearing between gear and its support |
12 |
| 475/225 |
With additional gearset between differential output and load |
84 |
| 475/222 |
With universal joint in drive train |
46 |
| 475/228 |
Worm drive on input shaft |
12 |
| 475/229 |
And roller bearing supporting worm from casing |
3 |
| 475/149 |
Electric or magnetic drive or control |
194 |
| 475/150 |
Differential drive or control |
190 |
| 475/151 |
Plural power paths |
45 |
| 475/152 |
With nonplanetary drive to electric or magnetic path |
10 |
| 475/153 |
With condition responsive control |
72 |
| 475/154 |
With electric or magnetic controlled brake |
49 |
| 475/155 |
And manual speed selector |
4 |
| 475/156 |
Electric or magnetic device disengages brake |
17 |
| 475/157 |
Electric or magnetic engaged brake and spring engaged lockup clutch |
12 |
| 475/31 |
Fluid drive or control of planetary gearing |
22 |
| 475/84 |
Control of differential planetary gearing |
46 |
| 475/86 |
By fluid operated mechanical clutch |
141 |
| 475/88 |
Operated by a pump responsive to differential action |
80 |
| 475/87 |
Operated by viscous drag |
20 |
| 475/89 |
Fluid resistance controls relative rotation of outputs |
52 |
| 475/90 |
Fluid pumped by differential gears |
20 |
| 475/85 |
Special fluid |
49 |
| 475/32 |
Diverse fluid drives |
10 |
| 475/114 |
Fluid control of friction planetary gearing |
10 |
| 475/115 |
Stepless ratio change controlled |
27 |
| 475/116 |
Fluid controlled mechanical clutch or brake |
141 |
| 475/143 |
Expanding fluid motor chamber mechanically contracts second motor |
14 |
| 475/144 |
Fluid controlled one-way devices |
13 |
| 475/145 |
Fluid motor controls device through cam or lever |
8 |
| 475/146 |
Fluid motor structure |
71 |
| 475/147 |
Radially expanding motor |
2 |
| 475/148 |
With one-way device |
19 |
| 475/131 |
Manually actuated ratio selector |
39 |
| 475/132 |
Electrical |
31 |
| 475/134 |
Plural selector valves |
15 |
| 475/135 |
Rotary valve |
9 |
| 475/133 |
With safety valve |
20 |
| 475/127 |
Pressure regulation |
138 |
| 475/130 |
Manual regulator |
10 |
| 475/128 |
Valving controls shift timing |
120 |
| 475/129 |
With fluid accumulator |
69 |
| 475/118 |
Speed responsive control |
29 |
| 475/120 |
Pressure control |
123 |
| 475/121 |
Ratio change |
40 |
| 475/122 |
Speed responsive valve control |
25 |
| 475/124 |
Centrifugal control |
7 |
| 475/123 |
Electrical control |
93 |
| 475/119 |
Safety device |
66 |
| 475/140 |
Spring engaged, fluid released clutch or brake device |
29 |
| 475/141 |
Plural devices simultaneously spring engaged |
14 |
| 475/142 |
Single fluid motor engages one device and releases other |
24 |
| 475/117 |
Temperature responsive control |
30 |
| 475/125 |
Torque responsive control |
45 |
| 475/126 |
Responsive to torque reversal |
8 |
| 475/136 |
With ancillary pump or governor drive |
38 |
| 475/137 |
Plural pumps |
4 |
| 475/138 |
With positive clutch or brake |
19 |
| 475/139 |
And friction synchronizer |
2 |
| 475/72 |
Fluid pump and motor in one of plural paths to or from planetary gearing |
143 |
| 475/78 |
Interrelated fluid unit and gear control |
38 |
| 475/79 |
With constant speed ratio between input and one fluid unit |
17 |
| 475/73 |
Plural fluid power paths to planetary gearing |
34 |
| 475/74 |
Plural outputs |
32 |
| 475/80 |
Plural speed ranges |
86 |
| 475/81 |
With constant speed ratio between input and one fluid unit |
57 |
| 475/82 |
Having single planet carrier |
42 |
| 475/76 |
Speed responsive control |
53 |
| 475/77 |
Constant speed output |
6 |
| 475/75 |
Three pumps or motors |
20 |
| 475/91 |
Fluid resistance inhibits relative rotation |
27 |
| 475/112 |
Fluid container connected to planet pinion |
4 |
| 475/92 |
Fluid damper for reaction element |
6 |
| 475/113 |
Impeller-turbine type fluid unit used as brake |
22 |
| 475/111 |
Planet clutched to fluid flywheel |
3 |
| 475/93 |
Valve inhibits fluid flow |
16 |
| 475/104 |
Fluid brake for planetary element |
6 |
| 475/105 |
And fluid clutch |
2 |
| 475/106 |
Bevel gearing |
2 |
| 475/107 |
Sun or orbit braked |
17 |
| 475/102 |
Fluid brake(s) for plural planetary elements |
2 |
| 475/108 |
Fluid clutch includes gear type pump |
11 |
| 475/99 |
Interrelated valve control and mechanical clutch or brake |
5 |
| 475/100 |
Valve control and mechanical clutch |
1 |
| 475/101 |
Pump pressure engages mechanical clutch |
3 |
| 475/109 |
Planet clutched to carrier |
3 |
| 475/110 |
With reversing means |
0 |
| 475/103 |
Plural fluid clutches |
0 |
| 475/94 |
Speed or torque responsive valve control |
13 |
| 475/98 |
Centrifugally actuated valve controls fluid brake |
1 |
| 475/95 |
Centrifugally actuated valve controls fluid clutch |
6 |
| 475/96 |
Clutch connects planet pinion and carrier |
1 |
| 475/97 |
With fluid brake control |
1 |
| 475/47 |
Impeller-turbine type fluid circuit and mechanical path in parallel |
26 |
| 475/52 |
And nonplanetary gearing |
25 |
| 475/57 |
Orbit and carrier braked |
4 |
| 475/58 |
Orbits braked |
2 |
| 475/53 |
Planetary gearing divides paths |
30 |
| 475/56 |
Sun and carrier braked |
26 |
| 475/55 |
Sun and orbit braked |
21 |
| 475/54 |
Sun, orbit and carrier braked |
18 |
| 475/48 |
With control of or by the fluid circuit |
11 |
| 475/50 |
Fill and empty type fluid circuit |
9 |
| 475/49 |
Gearing controlled by fluid circuit condition |
2 |
| 475/51 |
With speed responsive control |
8 |
| 475/59 |
Impeller-turbine type fluid circuit in series with planetary gearing |
53 |
| 475/60 |
And condition responsive control |
12 |
| 475/61 |
Control of or by fluid circuit |
8 |
| 475/62 |
Control responsive to relative impeller and turbine speeds |
4 |
| 475/63 |
System or servo fluid pressure controlled |
8 |
| 475/64 |
Fluid circuit controlled |
7 |
| 475/65 |
By lock-up clutch actuation |
45 |
| 475/71 |
And differential in series |
61 |
| 475/66 |
And nonplanetary gearing |
60 |
| 475/69 |
Fluid circuit controlled |
11 |
| 475/70 |
Pressure controlled |
10 |
| 475/68 |
With nonratio brake |
12 |
| 475/67 |
With synchronizing of positive clutch or brake |
2 |
| 475/33 |
Plural impeller-turbine type fluid circuits |
11 |
| 475/34 |
Fill and empty type |
7 |
| 475/83 |
Pump and motor in series with planetary gearing |
149 |
| 475/35 |
Single impeller-turbine type fluid circuit divides or combines plural power paths |
10 |
| 475/42 |
Control of or by fluid drive |
7 |
| 475/36 |
Planetary gearing divides paths |
7 |
| 475/44 |
Stator rotatable in reverse direction to provide drive |
20 |
| 475/45 |
Turbine braked, stator provides reverse drive |
7 |
| 475/46 |
And adds torque in forward drive |
6 |
| 475/37 |
Three fluid outputs |
2 |
| 475/38 |
And stator |
1 |
| 475/39 |
Two fluid outputs and stator |
5 |
| 475/41 |
And mechanical drive path |
11 |
| 475/40 |
With variable fluid drive control |
2 |
| 475/43 |
With speed or torque responsive clutch or brake control |
9 |
| 475/1 |
Input from independent power sources |
42 |
| 475/9 |
Bevel planet pinion in drive train |
40 |
| 475/2 |
Condition responsive motor control |
68 |
| 475/5 |
Including electric motor input |
541 |
| 475/3 |
Including manual input |
22 |
| 475/4 |
And electric motor input |
51 |
| 475/10 |
Intermeshing planet pinions in drive train |
29 |
| 475/8 |
One-way clutch or brake in drive train |
38 |
| 475/6 |
Plural outputs |
75 |
| 475/7 |
Worm gear in drive train |
40 |
| 475/207 |
Nonplanetary variable speed or direction transmission combined with planetary transmission |
131 |
| 475/208 |
Condition repsonsive |
38 |
| 475/209 |
Interrelated control of in series transmissions |
34 |
| 475/210 |
Nonplanetary transmission is belt or chain gearing |
143 |
| 475/213 |
Nonplanetary transmission is chain gearing |
18 |
| 475/211 |
Plural power paths to planetary gearing |
89 |
| 475/212 |
Nonplanetary transmission is chain gearing |
18 |
| 475/214 |
Nonplanetary transmission is friction gearing |
79 |
| 475/215 |
Plural power paths to planetary gearing |
52 |
| 475/216 |
Friction gear engages facing concave surfaces |
130 |
| 475/217 |
Nonplanetary transmission is disc and wheel |
32 |
| 475/219 |
Plural planetary units |
76 |
| 475/218 |
Plural power paths to planetary gearing |
105 |
| 475/901 |
Particular material |
21 |
| 475/902 |
Nonmetallic |
14 |
| 475/904 |
Particular mathematical equation |
64 |
| 475/162 |
Planet periphery surrounds axis of interacting gear (e.g., eccentrically driven transmisson) |
151 |
| 475/178 |
Circumferentially spaced connector pins |
95 |
| 475/179 |
Roller bearing surrounds pin |
40 |
| 475/165 |
Friction gearing |
16 |
| 475/166 |
Variable speed |
55 |
| 475/176 |
Gear has plural circumferential tooth sets |
54 |
| 475/177 |
Internal and external tooth sets |
48 |
| 475/168 |
Gear teeth comprise rolling bodies |
90 |
| 475/167 |
Link chain gearing |
10 |
| 475/169 |
Means to change speed ratio between input and output |
39 |
| 475/172 |
Condition responsive control |
4 |
| 475/173 |
Plural planetary elements braked |
8 |
| 475/171 |
Plural power paths to planetary gearing |
4 |
| 475/170 |
Variable eccentricity |
71 |
| 475/181 |
Particular counterweight |
28 |
| 475/180 |
Particular gear tooth |
72 |
| 475/174 |
Plural outputs |
24 |
| 475/163 |
Wabbler transmission |
37 |
| 475/164 |
Single member has oppositely axially facing tooth sets |
22 |
| 475/175 |
With releasable clutch or brake |
20 |
| 475/182 |
Planet pinion engages flexible belt or chain |
33 |
| 475/183 |
Planet pinion is friction gear |
70 |
| 475/196 |
Planet pinion is ball |
43 |
| 475/197 |
Planet pinion rotatable about axis at angle to axis of input or output gear |
11 |
| 475/184 |
Plural outputs (e.g., differential) |
25 |
| 475/195 |
Torque responsive means to increase contact pressure |
38 |
| 475/185 |
Variable speed ratio (without slippage) |
30 |
| 475/186 |
Condition responsive ratio change |
38 |
| 475/189 |
Planet pinion is a ball |
32 |
| 475/190 |
Planet pinion rotatable about axis at angle to axis of input or output gear |
7 |
| 475/193 |
Conical or frusto-conical planet pinion |
42 |
| 475/194 |
Torque responsive means to increase contact pressure |
22 |
| 475/191 |
Planet pinion is member having axis fixed or adjustable to position perpendicular to axis of input or output gear |
10 |
| 475/192 |
Pinion engages facing concave surfaces (e.g., mounted in torus) |
21 |
| 475/187 |
Releasably braked element |
8 |
| 475/188 |
Plural elements releasably braked |
5 |
| 475/331 |
Planetary gearing or element |
335 |
| 475/336 |
Axis of planet pinion at angle intersecting rotational axis of mating gear (e.g., bevel gears) |
46 |
| 475/338 |
Coaxial teeth around planet pinion engage axially spaced relatively rotatable gears |
66 |
| 475/341 |
Engage plural relatively rotatable orbit gears |
42 |
| 475/342 |
And sun gear |
74 |
| 475/339 |
Engage plural relatively rotatable sun gears |
74 |
| 475/340 |
And orbit gear |
26 |
| 475/346 |
Floating or flexible coupling or support |
157 |
| 475/347 |
Resilient member |
128 |
| 475/334 |
Floating support annulus in rolling contact with planet pinion |
18 |
| 475/343 |
Nonplanetary gearing combined with planetary |
84 |
| 475/344 |
Particular gear tooth feature |
95 |
| 475/345 |
Nonmetallic or resilient |
30 |
| 475/333 |
Planet pinion is worm gear |
15 |
| 475/348 |
Planet pinion supported by roller bearings |
68 |
| 475/332 |
Plural outputs |
53 |
| 475/337 |
Plural planet carriers in series move at different speeds |
62 |
| 475/335 |
Toothed planet pinion has smooth bearing surface engaging raceway on sun or orbit gear |
28 |
| 475/349 |
With manual input |
27 |
| 475/329 |
Plural power paths to planetary gearing |
41 |
| 475/330 |
Plural planetary units |
170 |
| 475/12 |
Reversal of direction of power flow changes power transmission to alternate path |
36 |
| 475/13 |
Input and output exchange functions |
7 |
| 475/11 |
Rotary planetating output |
25 |
| 475/903 |
Stacked planetary gearing |
18 |
| 475/18 |
Steering by driving |
30 |
| 475/27 |
Fluid steer control |
13 |
| 475/19 |
With condition responsive steer control |
22 |
| 475/20 |
With cooling or lubrication |
3 |
| 475/21 |
With infinitely variable drive |
6 |
| 475/25 |
Belt type |
6 |
| 475/22 |
Variable drive is fluid drive |
8 |
| 475/23 |
Hydrostatic type |
39 |
| 475/24 |
Plural pump-motor sets |
32 |
| 475/26 |
Variable drive is friction drive |
11 |
| 475/29 |
With planetary reaction brake steering |
14 |
| 475/30 |
And carrier input to planetary gearing |
8 |
| 475/28 |
With plural power paths to a planetary transmission at each output |
46 |
| 475/198 |
Variable speed or direction transmission combined with differential |
117 |
| 475/199 |
Condition responsive |
30 |
| 475/200 |
Differential is beneath prime mover or transmission |
75 |
| 475/201 |
Differential is between prime mover and transission in the path of power flow |
28 |
| 475/203 |
Plural selectively driveable gears surround differential |
22 |
| 475/206 |
Transmission output shaft parallel to differential output shafts |
207 |
| 475/204 |
Variable speed or direction is planetary transmission |
180 |
| 475/205 |
Plural planetary units combined with differential |
93 |
| 475/202 |
With universal joint in drive train |
25 |
| 475/158 |
With indicator or alarm |
34 |
| 475/159 |
With lubricaton |
200 |
| 475/160 |
For differential planetary gearing |
112 |
| 475/269 |
With means to vary drive ratio or disconnect drive (e.g., brake or clutch) |
129 |
| 475/306 |
Brake for planetary transmission having axis of planet pinion at angle to axis of mating gear (e.g., bevel gears) |
14 |
| 475/308 |
And lock-up clutch |
5 |
| 475/309 |
Friction clutch |
1 |
| 475/310 |
Plate clutch |
2 |
| 475/307 |
Including one-way clutch or brake |
5 |
| 475/301 |
Brake or clutch on surface of helically coiled member |
18 |
| 475/323 |
Carrier braked |
56 |
| 475/326 |
And lock-up clutch |
26 |
| 475/327 |
Friction clutch |
8 |
| 475/328 |
Plate clutch |
13 |
| 475/324 |
Including one-way clutch or brake |
30 |
| 475/325 |
Intermeshing planet pinions on single carrier |
42 |
| 475/298 |
Gear shiftable axially to disconnect or vary ratio |
87 |
| 475/299 |
Orbit shiftable relative to sun and carrier |
56 |
| 475/300 |
Sun shiftable relative to orbit and carrier |
28 |
| 475/305 |
Including releasable clutch directly between planet pinion and carrier |
12 |
| 475/270 |
Manual force provides reaction during drive |
20 |
| 475/302 |
Nonplanetary gearing combined with planetary |
58 |
| 475/317 |
Orbit braked |
85 |
| 475/320 |
And lock-up clutch |
45 |
| 475/321 |
Friction clutch |
12 |
| 475/322 |
Plate clutch |
30 |
| 475/318 |
Including one-way clutch or brake |
40 |
| 475/319 |
Intermeshing planet pinions on single carrier |
29 |
| 475/304 |
Planet pinion is worm gear |
2 |
| 475/296 |
Plural drive ratios other than unity |
133 |
| 475/297 |
Including one-way clutch or brake |
84 |
| 475/271 |
Plural elements selectively braked |
50 |
| 475/273 |
Axis of planet pinion at angle to axis of mating gear (e.g., bevel gears) |
6 |
| 475/274 |
And additional planetary gearset having axis of pinion parallel to axis of mating gear |
2 |
| 475/286 |
Brake for orbit and carrier |
114 |
| 475/287 |
Including one-way clutch or brake |
25 |
| 475/284 |
Brake for sun and carrier |
143 |
| 475/285 |
Including one-way clutch or brake |
94 |
| 475/282 |
Brake for sun and orbit |
82 |
| 475/283 |
Including one-way clutch or brake |
44 |
| 475/280 |
Brake for sun, carrier and orbit |
165 |
| 475/281 |
Including one-way clutch or brake |
93 |
| 475/292 |
Including one-way clutch or brake |
19 |
| 475/290 |
Plural orbits braked |
56 |
| 475/291 |
Including one-way clutch or brake |
12 |
| 475/288 |
Plural suns braked |
63 |
| 475/289 |
Including one-way clutch or brake |
36 |
| 475/275 |
Transmission includes three relatively rotatable sun gears |
219 |
| 475/279 |
With brake for plural orbits |
50 |
| 475/277 |
With brake for plural sun gears |
63 |
| 475/278 |
And brake for carrier |
94 |
| 475/276 |
With brake for sun, carrier and orbit |
243 |
| 475/272 |
With preselection |
3 |
| 475/295 |
Plural outputs |
96 |
| 475/294 |
Ratio shift initiated by reverse rotation of input shaft |
14 |
| 475/293 |
Speed responsive clutch or brake |
19 |
| 475/311 |
Sun braked |
51 |
| 475/314 |
And lock-up clutch |
21 |
| 475/315 |
Friction clutch |
8 |
| 475/316 |
Plate clutch |
18 |
| 475/312 |
Including one-way clutch or brake |
53 |
| 475/313 |
Intermeshing planet pinions on single carrier |
21 |
| 475/303 |
With synchronizing clutch or brake |
76 |
| 475/161 |
With transmission cooling or heating means |
43 |
