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Class Information
Number: 474
Name: Endless belt power transmission systems or components >
Description: GENERAL STATEMENT OF CLASS SUBJECT MATTER










Class Number Class Name No. of Patents
474/100

Auxiliary endless band for guiding belt or holding belt engaged with pulley

18
474/151

Auxiliary member removably attached to pulley or guide roll for preventing lateral displacement of belt

21
474/140

Belt guide has surface in sliding contact with belt

242
474/201

Belt having drive surfaces on opposite side edges of stacked plates having planar faces perpendicular to direction of belt movement

203
474/92

Cleaning device for belt, pulley, or guide roll

55
474/1

Control for forward and reverse

30
474/2

Cyclical or sequential (e.g., machine controlled, etc.)

5
474/3

Including device for shifting belt laterally of its direction of run

2
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

8
474/5

Belt selection by shifting or tightening belt

14
474/6

Including device for shifting belt laterally of its direction of run

0
474/69

Control for variable input to output speed-ratio

121
474/70

Condition responsive (e.g., responsive to speed, load, etc.)

239
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

126
474/80

And including belt-shifter mechanism

377
474/81

For shifting belt from both power input and power output pulleys

50
474/82

Shifter mechanism including parallelogram linkage

295
474/79

And pulley pivotally mounted to facilitate belt shift

24
474/77

Including coaxial pulleys shiftable axially to align selected pulley with drive belt

17
474/72

Including intermeshing gears in one drive train

40
474/83

Including mechanism for shifting belt axially on spaced pulleys with tapering drive face

27
474/73

Including separate belt on each of coaxial pulleys selectively engaged in drive train

24
474/76

Selection by axially movable pin engaged in opening through selected pulley

3
474/75

Selection by tightening belt on selected pulley

5
474/74

With overrunning clutch

46
474/143

Fabric drive face on belt and pulley

3
474/93

Fluid-impelling means (e.g., for cooling, etc.)

60
474/237

Friction drive belt

120
474/259

Drive surface on single sheet or web wound in plural, completely overlying convolutions

6
474/239

Having drive surface on helically coiled wire or cord

6
474/265

Having trapezoidal cross section (e.g., "v-belt", etc.)

91
474/263

Including discrete embedded fibers

170
474/260

Including embedded elongated strand having multiple components or layers of diverse materials

171
474/266

Including fabric web (e.g., knit, woven, etc.)

71
474/268

And additional coating, layer, or reinforcement of diverse kind of material

152
474/269

Additional material is leather

1
474/270

Additional material is metal

24
474/271

Additional material is rubber

80
474/267

Fabric having particular knit or weave

46
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.)

23
474/252

Groove continuous and longitudinally extending

30
474/250

Grooves transversely extending on belt surface

61
474/251

And additional groove on opposite surface

31
474/248

Including link-chain coextensive with continuous surface belt

9
474/272

Including metallic drive face

28
474/253

Including particular means connecting opposite ends to form loop

65
474/254

Connected by adhering surface on one end to surface on other end (e.g., by adhesive, heat, seal, etc.)

57
474/255

Including discrete connector

50
474/258

Connector comprises cord sewn through belt ends

8
474/256

Connector comprises element inserted into longitudinal openings in belt ends

37
474/257

Connector comprises plate clamped externally of belt ends

35
474/238

Including plural interconnected and transversely spaced pairs of oppositely facing side-drive surfaces (e.g., plural "v-belts", etc.)

66
474/240

Including plural interconnected members each having a drive surface facing in a common direction

34
474/242

Belt has oppositely facing side drive surfaces (e.g., "v-belt", etc.)

288
474/244

Oppositely facing surfaces are on pair of discrete elements

46
474/245

And sequential pairs are interconnected longitudinally by distinct pivot elements

105
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

5
474/264

Including plural layers of different elastomeric materials

90
474/261

Including plural superposed layers each having strands particularly oriented relative to belt dimension

47
474/262

Strands in the layers are oblique to longitudinal run of belt (e.g., plural layers of bias fabric, etc.)

33
474/166

Friction drive pulley or guide roll

104
474/171

And additional coaxial surface for engaging same belt in shifted condition or for engaging auxiliary belt, brake, or clutch member

36
474/197

Cylindrical rim interconnected to axially spaced support members

20
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

4
474/188

Including grooves or openings in cylindrical belt-engaging surface (e.g., for escape of air, etc.)

32
474/189

Circumferentially extending grooves

13
474/190

Including nonmetallic belt-engaging surface portion

56
474/193

Leather

0
474/191

Rubber

28
474/192

With embedded metal layer

11
474/194

Wood or paper

0
474/168

Including plural, coaxial, circumferential belt-receiving grooves

35
474/170

Plural grooves formed in unitary member

61
474/169

Plural grooves of different circumferences

18
474/184

Pulley or guide roll having plural, discrete belt-engaging faces for engaging flat belt

17
474/185

Circumferentially spaced faces

13
474/186

And axially spaced faces

3
474/187

Each face has continuous circumferential periphery

8
474/174

Pulley or guide roll including circumferential belt-receiving groove

55
474/177

And circumferentially continuous belt-engaging layer or insert of diverse material added on or between groove-forming flanges

21
474/178

Layer or insert of resilient material

26
474/176

Groove formed by multiple, abutting, circumferentially connected members

10
474/175

Groove formed by rugate or circumferentially spaced drive surfaces

17
474/179

Including connected discrete axially spaced groove-forming flanges

8
474/181

And abutting radial surfaces integral with the flanges

7
474/182

Including connector extending through opening in abutting surfaces

7
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

42
474/195

With spokes connecting rim to hub

11
474/196

Plural spoke sets axially spaced

7
474/198

With stationary support for pulley or guide roll

17
474/199

And ball or roller bearing for mounting pulley or guide roll on support

94
474/144

Guard or housing for belt or pulley

167
474/145

Connected to belt

18
474/146

Extending along entire length of belt run

58
474/147

Individual tubular housings for opposite belt run

15
474/95

Hub formed in sections and separable by moving sections radially apart (e.g., split pulley to facilitate installation, etc.)

31
474/96

And severance lines for separable rim sections diametrically opposite each other

19
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

335
474/119

Belt shifter for shifting belt laterally or for selective engagement and supported disengagement of belt with pulley

17
474/122

For shifting belt laterally

23
474/123

By adjusting axial inclination of belt guide roll

21
474/125

Including means for selectively clutching coaxial idler support to pulley

2
474/127

Shifter actuated by flexible cable

10
474/128

Shifter actuated by handle pivoted about fixed axis

11
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

34
474/120

Pulley has slot in groove-forming flange facilitating belt installation or removal

3
474/132

Gravity actuated guide roll for tensioning belt

10
474/131

Guide roll forms belt-thickness gap with pulley

8
474/133

Guide roll mounted for movement of its axis along arcuate path to tension belt

208
474/135

Guide roll spring biased in belt-tensioning direction

467
474/134

Plural guide rolls engaging single belt

99
474/136

Guide roll mounted for movement of its axis along rectilineal path to tension belt

75
474/138

Guide roll spring biased in belt-tensioning direction

198
474/137

Plural guide rolls engaging single belt

25
474/109

Load responsive tension adjuster or shifter

232
474/112

Pulley or guide roll has eccentric mount for shifting or tensioning movement

160
474/113

Pulley shifter

66
474/116

Pulley is vehicle drive pulley (e.g., bicycle sprocket, etc.)

48
474/114

Pulley on shaft of adjustably mounted drive motor

65
474/115

Spring biased in belt-tensioning direction

38
474/118

Pulley shiftable into engagement with exterior of belt surface

29
474/117

Spring biased in belt-tensioning direction

150
474/111

Tension adjuster has surface in sliding contact with belt

384
474/110

Tension adjuster or shifter driven by electrical or fluid motor

405
474/102

With sensor for controlling operation of shifter to correct belt training deviation

49
474/105

Sensor actuates pawl-and-rachet mechanism to operate shifter

2
474/106

Sensor includes rotatable belt-engaging surface

13
474/107

Rotatable on same axis as shiftable guide roll or pulley

8
474/108

To initiate relative axial movement of belt-engaging surfaces of guide roll or pulley

7
474/103

Shifter driven by electrical or fluid motor

27
474/104

Fluid motor

28
474/273

Miscellaneous

36
474/200

Mobius belt

8
474/903

Particular connection between hub and shaft

99
474/902

Particular connection between rim and hub

96
474/900

Phase variator

31
474/84

Plural belts or plural output loads

83
474/85

Plural belts having interengaged drive surfaces

41
474/88

Plural belts in series via countershaft

50
474/89

Countershaft laterally shiftable

15
474/86

Plural output loads

52
474/87

With common belt concurrently engaging input and plural output pulleys

54
474/64

Plural turns of same belt about pulley axis

8
474/66

Plural turns of same belt about axis of each of laterally spaced pulleys

5
474/67

With guide roll

4
474/68

Plural guide rolls

4
474/65

With flexible belt-tracking guide helically coiled about pulley

2
474/202

Positive drive belt

59
474/206

Belt formed of rigid links

176
474/209

Including ball or roller bearing circumferentially spaced about pivotal axis between links

31
474/218

Including diverse member for interconnecting opposite ends to complete loop (e.g., repair link for broken chain, etc.)

34
474/207

Including nonmetallic part

87
474/219

Including separate locking member for retaining link-connector in laterally aligned openings through adjacent links

21
474/220

Common locking member retains longitudinally spaced connectors

30
474/221

Strandlike locking member (e.g., wire, etc.)

2
474/224

Locking member includes portion disposed within opening which receives connector

12
474/225

Locking member extends through all aligned openings

4
474/223

Locking member received in annular groove extending entirely around circumference of connector

23
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

30
474/226

Link including discrete members forming laterally spaced sides of opening for pulley tooth

24
474/228

With discrete connector extending through laterally aligned apertures in adjacent links

31
474/230

Connector connects sequential links each having discrete members forming laterally spaced sides

48
474/231

With sleeve rotatable with respect to each link for engaging pulley tooth

88
474/229

Connector has bearing surface which is noncircular in transverse cross section

46
474/227

With particular structure facilitating disassembly of adjacent links

22
474/212

Link including integral surfaces forming inwardly opening groove (e.g., silent chain, etc.)

127
474/213

Plural links having laterally aligned groove-forming surfaces

102
474/214

Connector or bearing member extending through or positioned in laterally aligned openings in adjacent links is noncircular in transverse cross section

52
474/215

Multiple connector or bearing members extend through or positioned in common opening

83
474/216

Concave surface of one connector or bearing member abuts convex surface of another connector or bearing members

12
474/217

Plural connector or bearing members with concave surface abut convex surface or surfaces on another connector or bearing member

18
474/210

Links pivotable about diverse axes during operation (e.g., "universal" connection facilitating alignment with sprockets in diverse planes)

27
474/211

Ball-and-socket connection

13
474/203

Drive surfaces on belt formed by spherical or hemispherical elements

19
474/204

Drive surfaces on belt formed in or interconnected by continuous flexible member

31
474/205

Drive surfaces on longitudinally spaced teeth formed integral with flexible member

234
474/152

Positive drive pulley or guide roll

212
474/158

And additional coaxial surface for engaging same belt in shifted condition or for engaging auxiliary belt, brake, or clutch member

42
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

224
474/164

Having axially spaced sets of belt-engaging surfaces

98
474/162

Having belt-engaging surfaces on discrete circumferentially spaced, relatively movable or replaceable members

57
474/163

Movable with respect to each other during operation

15
474/161

Having nonmetallic component

109
474/153

With particular belt

136
474/155

Belt formed of rigid links

65
474/156

With sequential links pivoted about discrete pivot pin

128
474/157

And each link has integral surfaces forming inwardly opening groove

51
474/154

Belt has spherical or hemispherical drive faces

25
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

13
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

7
474/59

Pivotable about plural axes

2
474/60

Nonparallel axes

1
474/139

Pulley engages exterior surface of belt

38
474/141

Pulley having circumferentially spaced portions of drive face spaced unequal distances from pulley axis of rotation (e.g., elliptical pulley, etc.)

36
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.)

215
474/23

Adjusted by power from pulley drive train

19
474/24

And member has plural, relatively axially movable drive faces

13
474/25

And pulley shiftable laterally of its axis of rotation

21
474/27

Mounted on laterally shiftable countershaft

16
474/26

Mounted on laterally shiftable motor

14
474/37

By manual actuator for one or both confronting members

32
474/39

Screw actuated

18
474/41

By opposite-handed screw threads engaging adjacent members

4
474/40

With additional linkage in actuator drive train

12
474/42

With means to positively lock members in adjusted position

10
474/38

With neutral condition of drive

15
474/28

Fluid pressure actuator for adjustment of member

493
474/29

Including actuator interconnecting plural pulleys on spaced shafts for simultaneous adjustment

42
474/30

For axial adjustment of each member on each pulley

14
474/31

By dual lever mechanism

6
474/43

Including lubrication or particular guide or bearing for movable member

43
474/44

Self-lubricated bearing

8
474/45

With lubrication of support for movable member

13
474/17

Load responsive

79
474/19

Via relatively rotating cam and follower

85
474/20

Including interengaged threads

7
474/21

Including plural separate cam and follower pairs for adjusting plural members

22
474/18

With actuator driven by electrical or fluid motor

337
474/9

Members are gripping jaws actuated during each rotation of pulley

8
474/10

Via relatively rotating cam and follower

17
474/32

Plural members forming plural belt-receiving grooves on common axis

14
474/35

Axially spaced members simultaneously adjustable

13
474/36

On bolt radially spaced from pulley axis

3
474/33

With member common to plural grooves

16
474/34

Plural members common to plural grooves

3
474/11

Speed responsive

87
474/12

And load responsive

127
474/13

To centrifugal force

96
474/15

Via ball

20
474/16

Via liquid

18
474/14

Via pivoted weight

90
474/22

Temperature responsive

5
474/46

With spring device

109
474/47

Pulley with expansible rim means or pulleys with alternately useable nestable rims

25
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

93
474/54

By actuator having collar concentric with, and movable axially on, pulley axis

15
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

34
474/57

Collar interconnected with rim sections via pivoted link

11
474/50

By actuator responsive to speed or load

37
474/51

By fluid pressure actuator or inflatable rim

8
474/52

Including means interconnecting plural pulleys for simultaneous adjustment

16
474/53

Pulleys on spaced axes

31
474/94

Resilient connection between pulley or guide-roll rim and mount

123
474/90

Static electricity eliminator

3
474/91

Structure facilitating lubrication of belt, pulley, or guide roll

79
474/148

System including spaced pulleys interconnected by a belt

145
474/149

Positive drive pulley and friction drive pulley connected by same belt

20
474/150

With frame or mount for system

79
 
 
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