| Class Number |
Class Name |
No. of Patents |
| 474/100 |
Auxiliary endless band for guiding belt or holding belt engaged with pulley |
15 |
| 474/151 |
Auxiliary member removably attached to pulley or guide roll for preventing lateral displacement of belt |
20 |
| 474/140 |
Belt guide has surface in sliding contact with belt |
202 |
| 474/201 |
Belt having drive surfaces on opposite side edges of stacked plates having planar faces perpendicular to direction of belt movement |
185 |
| 474/92 |
Cleaning device for belt, pulley, or guide roll |
53 |
| 474/1 |
Control for forward and reverse |
26 |
| 474/2 |
Cyclical or sequential (e.g., machine controlled, etc.) |
5 |
| 474/3 |
Including device for shifting belt laterally of its direction of run |
0 |
| 474/7 |
Including coaxial pulleys rotated in opposite directions by single endless belt simultaneously engaging both pulleys |
4 |
| 474/4 |
Including separate belts for forward and reverse |
6 |
| 474/5 |
Belt selection by shifting or tightening belt |
11 |
| 474/6 |
Including device for shifting belt laterally of its direction of run |
0 |
| 474/69 |
Control for variable input to output speed-ratio |
106 |
| 474/70 |
Condition responsive (e.g., responsive to speed, load, etc.) |
188 |
| 474/71 |
Cyclical or sequential (e.g., machine controlled, etc.) |
20 |
| 474/78 |
Including belt shiftable axially from one to another surface of stepped pulley or coaxial pulleys of different diameter |
104 |
| 474/80 |
And including belt-shifter mechanism |
307 |
| 474/81 |
For shifting belt from both power input and power output pulleys |
35 |
| 474/82 |
Shifter mechanism including parallelogram linkage |
237 |
| 474/79 |
And pulley pivotally mounted to facilitate belt shift |
19 |
| 474/77 |
Including coaxial pulleys shiftable axially to align selected pulley with drive belt |
15 |
| 474/72 |
Including intermeshing gears in one drive train |
38 |
| 474/83 |
Including mechanism for shifting belt axially on spaced pulleys with tapering drive face |
19 |
| 474/73 |
Including separate belt on each of coaxial pulleys selectively engaged in drive train |
20 |
| 474/76 |
Selection by axially movable pin engaged in opening through selected pulley |
3 |
| 474/75 |
Selection by tightening belt on selected pulley |
4 |
| 474/74 |
With overrunning clutch |
31 |
| 474/143 |
Fabric drive face on belt and pulley |
1 |
| 474/93 |
Fluid-impelling means (e.g., for cooling, etc.) |
51 |
| 474/237 |
Friction drive belt |
89 |
| 474/259 |
Drive surface on single sheet or web wound in plural, completely overlying convolutions |
4 |
| 474/239 |
Having drive surface on helically coiled wire or cord |
6 |
| 474/265 |
Having trapezoidal cross section (e.g., "v-belt", etc.) |
83 |
| 474/263 |
Including discrete embedded fibers |
149 |
| 474/260 |
Including embedded elongated strand having multiple components or layers of diverse materials |
141 |
| 474/266 |
Including fabric web (e.g., knit, woven, etc.) |
63 |
| 474/268 |
And additional coating, layer, or reinforcement of diverse kind of material |
137 |
| 474/269 |
Additional material is leather |
1 |
| 474/270 |
Additional material is metal |
24 |
| 474/271 |
Additional material is rubber |
69 |
| 474/267 |
Fabric having particular knit or weave |
43 |
| 474/249 |
Including groove, openings or pockets formed in belt surface and arranged along entire length of belt (e.g., for flexibility, air escape, etc.) |
20 |
| 474/252 |
Groove continuous and longitudinally extending |
21 |
| 474/250 |
Grooves transversely extending on belt surface |
58 |
| 474/251 |
And additional groove on opposite surface |
26 |
| 474/248 |
Including link-chain coextensive with continuous surface belt |
9 |
| 474/272 |
Including metallic drive face |
26 |
| 474/253 |
Including particular means connecting opposite ends to form loop |
58 |
| 474/254 |
Connected by adhering surface on one end to surface on other end (e.g., by adhesive, heat, seal, etc.) |
52 |
| 474/255 |
Including discrete connector |
47 |
| 474/258 |
Connector comprises cord sewn through belt ends |
7 |
| 474/256 |
Connector comprises element inserted into longitudinal openings in belt ends |
36 |
| 474/257 |
Connector comprises plate clamped externally of belt ends |
31 |
| 474/238 |
Including plural interconnected and transversely spaced pairs of oppositely facing side-drive surfaces (e.g., plural "v-belts", etc.) |
51 |
| 474/240 |
Including plural interconnected members each having a drive surface facing in a common direction |
27 |
| 474/242 |
Belt has oppositely facing side drive surfaces (e.g., "v-belt", etc.) |
260 |
| 474/244 |
Oppositely facing surfaces are on pair of discrete elements |
38 |
| 474/245 |
And sequential pairs are interconnected longitudinally by distinct pivot elements |
88 |
| 474/243 |
Surfaces on ball or roller elements |
6 |
| 474/241 |
Forming imbricate structure |
7 |
| 474/246 |
Plural, inwardly facing drive surfaces along the direction transverse to longitudinal extent of belt |
8 |
| 474/247 |
And plural, inwardly facing drive surfaces along the direction parallel to longitudinal extent of belt |
4 |
| 474/264 |
Including plural layers of different elastomeric materials |
68 |
| 474/261 |
Including plural superposed layers each having strands particularly oriented relative to belt dimension |
36 |
| 474/262 |
Strands in the layers are oblique to longitudinal run of belt (e.g., plural layers of bias fabric, etc.) |
31 |
| 474/166 |
Friction drive pulley or guide roll |
81 |
| 474/171 |
And additional coaxial surface for engaging same belt in shifted condition or for engaging auxiliary belt, brake, or clutch member |
30 |
| 474/197 |
Cylindrical rim interconnected to axially spaced support members |
19 |
| 474/172 |
Guide roll on axis perpendicular to top surface of belt for engaging side of belt |
2 |
| 474/173 |
And additional guide roll for engaging top or bottom surface of belt |
3 |
| 474/188 |
Including grooves or openings in cylindrical belt-engaging surface (e.g., for escape of air, etc.) |
26 |
| 474/189 |
Circumferentially extending grooves |
12 |
| 474/190 |
Including nonmetallic belt-engaging surface portion |
51 |
| 474/193 |
Leather |
0 |
| 474/191 |
Rubber |
25 |
| 474/192 |
With embedded metal layer |
9 |
| 474/194 |
Wood or paper |
0 |
| 474/168 |
Including plural, coaxial, circumferential belt-receiving grooves |
33 |
| 474/170 |
Plural grooves formed in unitary member |
56 |
| 474/169 |
Plural grooves of different circumferences |
18 |
| 474/184 |
Pulley or guide roll having plural, discrete belt-engaging faces for engaging flat belt |
14 |
| 474/185 |
Circumferentially spaced faces |
12 |
| 474/186 |
And axially spaced faces |
2 |
| 474/187 |
Each face has continuous circumferential periphery |
7 |
| 474/174 |
Pulley or guide roll including circumferential belt-receiving groove |
48 |
| 474/177 |
And circumferentially continuous belt-engaging layer or insert of diverse material added on or between groove-forming flanges |
19 |
| 474/178 |
Layer or insert of resilient material |
23 |
| 474/176 |
Groove formed by multiple, abutting, circumferentially connected members |
8 |
| 474/175 |
Groove formed by rugate or circumferentially spaced drive surfaces |
16 |
| 474/179 |
Including connected discrete axially spaced groove-forming flanges |
7 |
| 474/181 |
And abutting radial surfaces integral with the flanges |
6 |
| 474/182 |
Including connector extending through opening in abutting surfaces |
6 |
| 474/183 |
Connector comprises tang integral with one of the surfaces |
4 |
| 474/180 |
Connected via nesting cylindrical or conical surfaces integral with the flanges |
5 |
| 474/167 |
With particular belt |
35 |
| 474/195 |
With spokes connecting rim to hub |
8 |
| 474/196 |
Plural spoke sets axially spaced |
7 |
| 474/198 |
With stationary support for pulley or guide roll |
16 |
| 474/199 |
And ball or roller bearing for mounting pulley or guide roll on support |
76 |
| 474/144 |
Guard or housing for belt or pulley |
129 |
| 474/145 |
Connected to belt |
15 |
| 474/146 |
Extending along entire length of belt run |
46 |
| 474/147 |
Individual tubular housings for opposite belt run |
13 |
| 474/95 |
Hub formed in sections and separable by moving sections radially apart (e.g., split pulley to facilitate installation, etc.) |
27 |
| 474/96 |
And severance lines for separable rim sections diametrically opposite each other |
18 |
| 474/97 |
With spokes connecting hub section and rim section |
1 |
| 474/98 |
Plural integral spokes |
3 |
| 474/99 |
With discrete means connecting outer ends of integral spokes to rim |
0 |
| 474/142 |
Magnetic attraction between belt and pulley |
3 |
| 474/101 |
Means for adjusting belt tension or for shifting belt, pulley or guide roll |
287 |
| 474/119 |
Belt shifter for shifting belt laterally or for selective engagement and supported disengagement of belt with pulley |
14 |
| 474/122 |
For shifting belt laterally |
17 |
| 474/123 |
By adjusting axial inclination of belt guide roll |
20 |
| 474/125 |
Including means for selectively clutching coaxial idler support to pulley |
2 |
| 474/127 |
Shifter actuated by flexible cable |
9 |
| 474/128 |
Shifter actuated by handle pivoted about fixed axis |
10 |
| 474/129 |
And connector link between handle and shifter pivotable about spaced fixed axis |
2 |
| 474/126 |
Shifter actuated by screw or gear drive |
1 |
| 474/124 |
With idler support having circumferentially spaced rollers to receive shifted belt |
1 |
| 474/121 |
For shifting exterior surface of belt into engagement with pulley |
3 |
| 474/130 |
Portable hand tool for removing or installing belt |
27 |
| 474/120 |
Pulley has slot in groove-forming flange facilitating belt installation or removal |
2 |
| 474/132 |
Gravity actuated guide roll for tensioning belt |
9 |
| 474/131 |
Guide roll forms belt-thickness gap with pulley |
6 |
| 474/133 |
Guide roll mounted for movement of its axis along arcuate path to tension belt |
175 |
| 474/135 |
Guide roll spring biased in belt-tensioning direction |
397 |
| 474/134 |
Plural guide rolls engaging single belt |
85 |
| 474/136 |
Guide roll mounted for movement of its axis along rectilineal path to tension belt |
64 |
| 474/138 |
Guide roll spring biased in belt-tensioning direction |
182 |
| 474/137 |
Plural guide rolls engaging single belt |
19 |
| 474/109 |
Load responsive tension adjuster or shifter |
173 |
| 474/112 |
Pulley or guide roll has eccentric mount for shifting or tensioning movement |
128 |
| 474/113 |
Pulley shifter |
61 |
| 474/116 |
Pulley is vehicle drive pulley (e.g., bicycle sprocket, etc.) |
36 |
| 474/114 |
Pulley on shaft of adjustably mounted drive motor |
57 |
| 474/115 |
Spring biased in belt-tensioning direction |
34 |
| 474/118 |
Pulley shiftable into engagement with exterior of belt surface |
24 |
| 474/117 |
Spring biased in belt-tensioning direction |
127 |
| 474/111 |
Tension adjuster has surface in sliding contact with belt |
295 |
| 474/110 |
Tension adjuster or shifter driven by electrical or fluid motor |
345 |
| 474/102 |
With sensor for controlling operation of shifter to correct belt training deviation |
44 |
| 474/105 |
Sensor actuates pawl-and-rachet mechanism to operate shifter |
2 |
| 474/106 |
Sensor includes rotatable belt-engaging surface |
10 |
| 474/107 |
Rotatable on same axis as shiftable guide roll or pulley |
7 |
| 474/108 |
To initiate relative axial movement of belt-engaging surfaces of guide roll or pulley |
5 |
| 474/103 |
Shifter driven by electrical or fluid motor |
22 |
| 474/104 |
Fluid motor |
25 |
| 474/273 |
Miscellaneous |
35 |
| 474/200 |
Mobius belt |
8 |
| 474/903 |
Particular connection between hub and shaft |
96 |
| 474/902 |
Particular connection between rim and hub |
81 |
| 474/900 |
Phase variator |
31 |
| 474/84 |
Plural belts or plural output loads |
75 |
| 474/85 |
Plural belts having interengaged drive surfaces |
39 |
| 474/88 |
Plural belts in series via countershaft |
46 |
| 474/89 |
Countershaft laterally shiftable |
15 |
| 474/86 |
Plural output loads |
48 |
| 474/87 |
With common belt concurrently engaging input and plural output pulleys |
44 |
| 474/64 |
Plural turns of same belt about pulley axis |
7 |
| 474/66 |
Plural turns of same belt about axis of each of laterally spaced pulleys |
3 |
| 474/67 |
With guide roll |
2 |
| 474/68 |
Plural guide rolls |
4 |
| 474/65 |
With flexible belt-tracking guide helically coiled about pulley |
1 |
| 474/202 |
Positive drive belt |
45 |
| 474/206 |
Belt formed of rigid links |
134 |
| 474/209 |
Including ball or roller bearing circumferentially spaced about pivotal axis between links |
30 |
| 474/218 |
Including diverse member for interconnecting opposite ends to complete loop (e.g., repair link for broken chain, etc.) |
31 |
| 474/207 |
Including nonmetallic part |
81 |
| 474/219 |
Including separate locking member for retaining link-connector in laterally aligned openings through adjacent links |
13 |
| 474/220 |
Common locking member retains longitudinally spaced connectors |
25 |
| 474/221 |
Strandlike locking member (e.g., wire, etc.) |
1 |
| 474/224 |
Locking member includes portion disposed within opening which receives connector |
9 |
| 474/225 |
Locking member extends through all aligned openings |
4 |
| 474/223 |
Locking member received in annular groove extending entirely around circumference of connector |
22 |
| 474/222 |
Threaded connection between connector and locking member |
3 |
| 474/208 |
Including wire member coiled about pivotal axis between links |
5 |
| 474/232 |
Link including common member forming laterally spaced sides of opening for pulley tooth |
7 |
| 474/235 |
Common member surrounds opening for pulley tooth on all sides |
5 |
| 474/236 |
Member formed from sheet metal |
3 |
| 474/233 |
With discrete member interconnecting sequential pulley-tooth-receiving links |
6 |
| 474/234 |
Connector member inserted through lateral opening in pulley-tooth-receiving links |
26 |
| 474/226 |
Link including discrete members forming laterally spaced sides of opening for pulley tooth |
21 |
| 474/228 |
With discrete connector extending through laterally aligned apertures in adjacent links |
25 |
| 474/230 |
Connector connects sequential links each having discrete members forming laterally spaced sides |
32 |
| 474/231 |
With sleeve rotatable with respect to each link for engaging pulley tooth |
77 |
| 474/229 |
Connector has bearing surface which is noncircular in transverse cross section |
30 |
| 474/227 |
With particular structure facilitating disassembly of adjacent links |
17 |
| 474/212 |
Link including integral surfaces forming inwardly opening groove (e.g., silent chain, etc.) |
91 |
| 474/213 |
Plural links having laterally aligned groove-forming surfaces |
76 |
| 474/214 |
Connector or bearing member extending through or positioned in laterally aligned openings in adjacent links is noncircular in transverse cross section |
45 |
| 474/215 |
Multiple connector or bearing members extend through or positioned in common opening |
51 |
| 474/216 |
Concave surface of one connector or bearing member abuts convex surface of another connector or bearing members |
9 |
| 474/217 |
Plural connector or bearing members with concave surface abut convex surface or surfaces on another connector or bearing member |
12 |
| 474/210 |
Links pivotable about diverse axes during operation (e.g., "universal" connection facilitating alignment with sprockets in diverse planes) |
25 |
| 474/211 |
Ball-and-socket connection |
13 |
| 474/203 |
Drive surfaces on belt formed by spherical or hemispherical elements |
17 |
| 474/204 |
Drive surfaces on belt formed in or interconnected by continuous flexible member |
27 |
| 474/205 |
Drive surfaces on longitudinally spaced teeth formed integral with flexible member |
208 |
| 474/152 |
Positive drive pulley or guide roll |
166 |
| 474/158 |
And additional coaxial surface for engaging same belt in shifted condition or for engaging auxiliary belt, brake, or clutch member |
35 |
| 474/159 |
Coaxial surface is belt-engaging surface on friction drive pulley |
10 |
| 474/160 |
Coaxial surface is belt-engaging surface on positive drive pulley of different circumference |
189 |
| 474/164 |
Having axially spaced sets of belt-engaging surfaces |
79 |
| 474/162 |
Having belt-engaging surfaces on discrete circumferentially spaced, relatively movable or replaceable members |
52 |
| 474/163 |
Movable with respect to each other during operation |
10 |
| 474/161 |
Having nonmetallic component |
95 |
| 474/153 |
With particular belt |
123 |
| 474/155 |
Belt formed of rigid links |
43 |
| 474/156 |
With sequential links pivoted about discrete pivot pin |
100 |
| 474/157 |
And each link has integral surfaces forming inwardly opening groove |
35 |
| 474/154 |
Belt has spherical or hemispherical drive faces |
20 |
| 474/165 |
With stationary support for pulley or guide roll |
20 |
| 474/61 |
Power input and output pulleys on nonparallel axes |
3 |
| 474/62 |
With common belt engaging both pulleys |
10 |
| 474/63 |
And shiftable guide roll engaging belt run |
8 |
| 474/58 |
Power output pulley selectively shiftable to different power output locations relative to input pulley |
4 |
| 474/59 |
Pivotable about plural axes |
2 |
| 474/60 |
Nonparallel axes |
1 |
| 474/139 |
Pulley engages exterior surface of belt |
36 |
| 474/141 |
Pulley having circumferentially spaced portions of drive face spaced unequal distances from pulley axis of rotation (e.g., elliptical pulley, etc.) |
27 |
| 474/901 |
Pulley or guide roll for track of endless track vehicle |
45 |
| 474/8 |
Pulley with belt-receiving groove formed by drive faces on relatively axially movable coaxial confronting members (e.g., expansible cone pulley, etc.) |
157 |
| 474/23 |
Adjusted by power from pulley drive train |
15 |
| 474/24 |
And member has plural, relatively axially movable drive faces |
11 |
| 474/25 |
And pulley shiftable laterally of its axis of rotation |
18 |
| 474/27 |
Mounted on laterally shiftable countershaft |
15 |
| 474/26 |
Mounted on laterally shiftable motor |
13 |
| 474/37 |
By manual actuator for one or both confronting members |
27 |
| 474/39 |
Screw actuated |
16 |
| 474/41 |
By opposite-handed screw threads engaging adjacent members |
4 |
| 474/40 |
With additional linkage in actuator drive train |
10 |
| 474/42 |
With means to positively lock members in adjusted position |
10 |
| 474/38 |
With neutral condition of drive |
14 |
| 474/28 |
Fluid pressure actuator for adjustment of member |
424 |
| 474/29 |
Including actuator interconnecting plural pulleys on spaced shafts for simultaneous adjustment |
38 |
| 474/30 |
For axial adjustment of each member on each pulley |
14 |
| 474/31 |
By dual lever mechanism |
5 |
| 474/43 |
Including lubrication or particular guide or bearing for movable member |
35 |
| 474/44 |
Self-lubricated bearing |
4 |
| 474/45 |
With lubrication of support for movable member |
9 |
| 474/17 |
Load responsive |
67 |
| 474/19 |
Via relatively rotating cam and follower |
70 |
| 474/20 |
Including interengaged threads |
7 |
| 474/21 |
Including plural separate cam and follower pairs for adjusting plural members |
17 |
| 474/18 |
With actuator driven by electrical or fluid motor |
287 |
| 474/9 |
Members are gripping jaws actuated during each rotation of pulley |
6 |
| 474/10 |
Via relatively rotating cam and follower |
12 |
| 474/32 |
Plural members forming plural belt-receiving grooves on common axis |
9 |
| 474/35 |
Axially spaced members simultaneously adjustable |
11 |
| 474/36 |
On bolt radially spaced from pulley axis |
3 |
| 474/33 |
With member common to plural grooves |
15 |
| 474/34 |
Plural members common to plural grooves |
3 |
| 474/11 |
Speed responsive |
75 |
| 474/12 |
And load responsive |
108 |
| 474/13 |
To centrifugal force |
85 |
| 474/15 |
Via ball |
15 |
| 474/16 |
Via liquid |
14 |
| 474/14 |
Via pivoted weight |
79 |
| 474/22 |
Temperature responsive |
4 |
| 474/46 |
With spring device |
95 |
| 474/47 |
Pulley with expansible rim means or pulleys with alternately useable nestable rims |
19 |
| 474/48 |
Nestable rims of diverse kind (e.g., one grooved and the other cylindrical, etc.) |
1 |
| 474/49 |
Structure for variably adjusting radius of rim section |
84 |
| 474/54 |
By actuator having collar concentric with, and movable axially on, pulley axis |
13 |
| 474/55 |
Collar interconnected with rim sections via pivoted link |
2 |
| 474/56 |
By actuator having collar concentric with, and rotatable in plane perpendicular to pulley axis |
33 |
| 474/57 |
Collar interconnected with rim sections via pivoted link |
11 |
| 474/50 |
By actuator responsive to speed or load |
31 |
| 474/51 |
By fluid pressure actuator or inflatable rim |
7 |
| 474/52 |
Including means interconnecting plural pulleys for simultaneous adjustment |
13 |
| 474/53 |
Pulleys on spaced axes |
26 |
| 474/94 |
Resilient connection between pulley or guide-roll rim and mount |
89 |
| 474/90 |
Static electricity eliminator |
3 |
| 474/91 |
Structure facilitating lubrication of belt, pulley, or guide roll |
71 |
| 474/148 |
System including spaced pulleys interconnected by a belt |
118 |
| 474/149 |
Positive drive pulley and friction drive pulley connected by same belt |
16 |
| 474/150 |
With frame or mount for system |
68 |
