US Patent Class 474
ENDLESS BELT POWER TRANSMISSION SYSTEMS OR COMPONENTS



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Current as of: June, 1999
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  DF  CLASS NOTES
1  DF  CONTROL FOR FORWARD AND REVERSE
2  DF  .~ Cyclical or sequential (e.g., machine controlled, etc.)
3  DF  .~.~ Including device for shifting belt laterally of its direction of run
4  DF  .~ Including separate belts for forward and reverse
5  DF  .~.~ Belt selection by shifting or tightening belt
6  DF  .~.~.~ Including device for shifting belt laterally of its direction of run
7  DF  .~ Including coaxial pulleys rotated in opposite directions by single endless belt simultaneously engaging both pulleys
8  DF  PULLEY WITH BELT-RECEIVING GROOVE FORMED BY DRIVE FACES ON RELATIVELY AXIALLY MOVABLE COAXIAL CONFRONTING MEMBERS (E.G., EXPANSIBLE CONE PULLEY, ETC.)
9  DF  .~ Members are gripping jaws actuated during each rotation of pulley
10  DF  .~.~ Via relatively rotating cam and follower
11  DF  .~ Speed responsive
12  DF  .~.~ And load responsive
13  DF  .~.~ To centrifugal force
14  DF  .~.~.~ Via pivoted weight
15  DF  .~.~.~ Via ball
16  DF  .~.~.~ Via liquid
17  DF  .~ Load responsive
18  DF  .~.~ With actuator driven by electrical or fluid motor
19  DF  .~.~ Via relatively rotating cam and follower
20  DF  .~.~.~ Including interengaged threads
21  DF  .~.~.~ Including plural separate cam and follower pairs for adjusting plural members
22  DF  .~ Temperature responsive
23  DF  .~ Adjusted by power from pulley drive train
24  DF  .~ And member has plural, relatively axially movable drive faces
25  DF  .~ And pulley shiftable laterally of its axis of rotation
26  DF  .~.~ Mounted on laterally shiftable motor
27  DF  .~.~ Mounted on laterally shiftable countershaft
28  DF  .~ Fluid pressure actuator for adjustment of member
29  DF  .~ Including actuator interconnecting plural pulleys on spaced shafts for simultaneous adjustment
30  DF  .~.~ For axial adjustment of each member on each pulley
31  DF  .~.~.~ By dual lever mechanism
32  DF  .~ Plural members forming plural belt-receiving grooves on common axis
33  DF  .~.~ With member common to plural grooves
34  DF  .~.~.~ Plural members common to plural grooves
35  DF  .~.~ Axially spaced members simultaneously adjustable
36  DF  .~.~.~ On bolt radially spaced from pulley axis
37  DF  .~ By manual actuator for one or both confronting members
38  DF  .~.~ With neutral condition of drive
39  DF  .~.~ Screw actuated
40  DF  .~.~.~ With additional linkage in actuator drive train
41  DF  .~.~.~ By opposite-handed screw threads engaging adjacent members
42  DF  .~.~.~ With means to positively lock members in adjusted position
43  DF  .~ Including lubrication or particular guide or bearing for movable member
44  DF  .~.~ Self-lubricated bearing
45  DF  .~.~ With lubrication of support for movable member
46  DF  .~ With spring device
47  DF  PULLEY WITH EXPANSIBLE RIM MEANS OR PULLEYS WITH ALTERNATELY USEABLE NESTABLE RIMS
48  DF  .~ Nestable rims of diverse kind (e.g., one grooved and the other cylindrical, etc.)
49  DF  .~ Structure for variably adjusting radius of rim section
50  DF  .~.~ By actuator responsive to speed or load
51  DF  .~.~ By fluid pressure actuator or inflatable rim
52  DF  .~.~ Including means interconnecting plural pulleys for simultaneous adjustment
53  DD  .~.~.~ Pulleys on spaced axes
54  DF  .~.~ By actuator having collar concentric with, and movable axially on, pulley axis
55  DF  .~.~.~ Collar interconnected with rim sections via pivoted link
56  DF  .~.~ By actuator having collar concentric with, and rotatable in plane perpendicular to pulley axis
57  DF  .~.~.~ Collar interconnected with rim sections via pivoted link
58  DF  POWER OUTPUT PULLEY SELECTIVELY SHIFTABLE TO DIFFERENT POWER OUTPUT LOCATIONS RELATIVE TO INPUT PULLEY
59  DF  .~ Pivotable about plural axes
60  DF  .~.~ Nonparallel axes
61  DF  POWER INPUT AND OUTPUT PULLEYS ON NONPARALLEL AXES
62  DF  .~ With common belt engaging both pulleys
63  DF  .~.~ And shiftable guide roll engaging belt run
64  DF  PLURAL TURNS OF SAME BELT ABOUT PULLEY AXIS
65  DF  .~ With flexible belt-tracking guide helically coiled about pulley
66  DF  .~ Plural turns of same belt about axis of each of laterally spaced pulleys
67  DF  .~.~ With guide roll
68  DF  .~.~.~ Plural guide rolls
69  DF  CONTROL FOR VARIABLE INPUT TO OUTPUT SPEED-RATIO
70  DF  .~ Condition responsive (e.g., responsive to speed, load, etc.)
71  DF  .~ Cyclical or sequential (e.g., machine controlled, etc.)
72  DF  .~ Including intermeshing gears in one drive train
73  DF  .~ Including separate belt on each of coaxial pulleys selectively engaged in drive train
74  DF  .~.~ With overrunning clutch
75  DF  .~.~ Selection by tightening belt on selected pulley
76  DF  .~.~ Selection by axially movable pin engaged in opening through selected pulley
77  DF  .~ Including coaxial pulleys shiftable axially to align selected pulley with drive belt
78  DF  .~ Including belt shiftable axially from one to another surface of stepped pulley or coaxial pulleys of different diameter
79  DF  .~.~ And pulley pivotally mounted to facilitate belt shift
80  DF  .~.~ And including belt-shifter mechanism
81  DF  .~.~.~ For shifting belt from both power input and power output pulleys
82  DF  .~.~.~ Shifter mechanism including parallelogram linkage
83  DF  .~ Including mechanism for shifting belt axially on spaced pulleys with tapering drive face
84  DF  PLURAL BELTS OR PLURAL OUTPUT LOADS
85  DF  .~ Plural belts having interengaged drive surfaces
86  DF  .~ Plural output loads
87  DF  .~.~ With common belt concurrently engaging input and plural output pulleys
88  DF  .~ Plural belts in series via countershaft
89  DF  .~.~ Countershaft laterally shiftable
90  DF  STATIC ELECTRICITY ELIMINATOR
91  DF  STRUCTURE FACILITATING LUBRICATION OF BELT, PULLEY, OR GUIDE ROLL
92  DF  CLEANING DEVICE FOR BELT, PULLEY, OR GUIDE ROLL
93  DF  FLUID-IMPELLING MEANS (E.G., FOR COOLING, ETC.)
94  DF  RESILIENT CONNECTION BETWEEN PULLEY OR GUIDE-ROLL RIM AND MOUNT
95  DF  HUB FORMED IN SECTIONS AND SEPARABLE BY MOVING SECTIONS RADIALLY APART (E.G., SPLIT PULLEY TO FACILITATE INSTALLATION, ETC.)
96  DF  .~ And severance lines for separable rim sections diametrically opposite each other
97  DF  .~.~ With spokes connecting hub section and rim section
98  DF  .~.~.~ Plural integral spokes
99  DF  .~.~.~.~ With discrete means connecting outer ends of integral spokes to rim
100  DF  AUXILIARY ENDLESS BAND FOR GUIDING BELT OR HOLDING BELT ENGAGED WITH PULLEY
101  DF  MEANS FOR ADJUSTING BELT TENSION OR FOR SHIFTING BELT, PULLEY OR GUIDE ROLL
102  DF  .~ With sensor for controlling operation of shifter to correct belt training deviation
103  DF  .~.~ Shifter driven by electrical or fluid motor
104  DF  .~.~.~ Fluid motor
105  DF  .~.~ Sensor actuates pawl-and-rachet mechanism to operate shifter
106  DF  .~.~ Sensor includes rotatable belt-engaging surface
107  DF  .~.~.~ Rotatable on same axis as shiftable guide roll or pulley
108  DF  .~.~.~.~ To initiate relative axial movement of belt-engaging surfaces of guide roll or pulley
109  DF  .~ Load responsive tension adjuster or shifter
110  DF  .~ Tension adjuster or shifter driven by electrical or fluid motor
111  DF  .~ Tension adjuster has surface in sliding contact with belt
112  DF  .~ Pulley or guide roll has eccentric mount for shifting or tensioning movement
113  DF  .~ Pulley shifter
114  DF  .~.~ Pulley on shaft of adjustably mounted drive motor
115  DF  .~.~.~ Spring biased in belt-tensioning direction
116  DF  .~.~ Pulley is vehicle drive pulley (e.g., bicycle sprocket, etc.)
117  DF  .~.~ Spring biased in belt-tensioning direction
118  DF  .~.~ Pulley shiftable into engagement with exterior of belt surface
119  DF  .~ Belt shifter for shifting belt laterally or for selective engagement and supported disengagement of belt with pulley
120  DF  .~.~ Pulley has slot in groove-forming flange facilitating belt installation or removal
121  DF  .~.~ For shifting exterior surface of belt into engagement with pulley
122  DF  .~.~ For shifting belt laterally
123  DF  .~.~.~ By adjusting axial inclination of belt guide roll
124  DF  .~.~.~ With idler support having circumferentially spaced rollers to receive shifted belt
125  DF  .~.~.~ Including means for selectively clutching coaxial idler support to pulley
126  DF  .~.~.~ Shifter actuated by screw or gear drive
127  DF  .~.~.~ Shifter actuated by flexible cable
128  DF  .~.~.~ Shifter actuated by handle pivoted about fixed axis
129  DF  .~.~.~.~ And connector link between handle and shifter pivotable about spaced fixed axis
130  DF  .~.~ Portable hand tool for removing or installing belt
131  DF  .~ Guide roll forms belt-thickness gap with pulley
132  DF  .~ Gravity actuated guide roll for tensioning belt
133  DF  .~ Guide roll mounted for movement of its axis along arcuate path to tension belt
134  DF  .~.~ Plural guide rolls engaging single belt
135  DF  .~.~ Guide roll spring biased in belt-tensioning direction
136  DF  .~ Guide roll mounted for movement of its axis along rectilineal path to tension belt
137  DF  .~.~ Plural guide rolls engaging single belt
138  DF  .~.~ Guide roll spring biased in belt-tensioning direction
139  DF  PULLEY ENGAGES EXTERIOR SURFACE OF BELT
140  DF  BELT GUIDE HAS SURFACE IN SLIDING CONTACT WITH BELT
141  DF  PULLEY HAVING CIRCUMFERENTIALLY SPACED PORTIONS OF DRIVE FACE SPACED UNEQUAL DISTANCES FROM PULLEY AXIS OF ROTATION (E.G., ELLIPTICAL PULLEY, ETC.)
142  DF  MAGNETIC ATTRACTION BETWEEN BELT AND PULLEY
143  DF  FABRIC DRIVE FACE ON BELT AND PULLEY
144  DF  GUARD OR HOUSING FOR BELT OR PULLEY
145  DF  .~ Connected to belt
146  DF  .~ Extending along entire length of belt run
147  DF  .~.~ Individual tubular housings for opposite belt run
148  DF  SYSTEM INCLUDING SPACED PULLEYS INTERCONNECTED BY A BELT
149  DF  .~ Positive drive pulley and friction drive pulley connected by same belt
150  DF  .~ With frame or mount for system
151  DF  AUXILIARY MEMBER REMOVABLY ATTACHED TO PULLEY OR GUIDE ROLL FOR PREVENTING LATERAL DISPLACEMENT OF BELT
152  DF  POSITIVE DRIVE PULLEY OR GUIDE ROLL
153  DF  .~ With particular belt
154  DF  .~.~ Belt has spherical or hemispherical drive faces
155  DF  .~.~ Belt formed of rigid links
156  DF  .~.~.~ With sequential links pivoted about discrete pivot pin
157  DF  .~.~.~.~ And each link has integral surfaces forming inwardly opening groove
158  DF  .~ And additional coaxial surface for engaging same belt in shifted condition or for engaging auxiliary belt, brake, or clutch member
159  DF  .~.~ Coaxial surface is belt-engaging surface on friction drive pulley
160  DF  .~.~ Coaxial surface is belt-engaging surface on positive drive pulley of different circumference
161  DF  .~ Having nonmetallic component
162  DF  .~ Having belt-engaging surfaces on discrete circumferentially spaced, relatively movable or replaceable members
163  DF  .~.~ Movable with respect to each other during operation
164  DF  .~ Having axially spaced sets of belt-engaging surfaces
165  DF  .~ With stationary support for pulley or guide roll
166  DF  FRICTION DRIVE PULLEY OR GUIDE ROLL
167  DF  .~ With particular belt
168  DF  .~ Including plural, coaxial, circumferential belt-receiving grooves
169  DF  .~.~ Plural grooves of different circumferences
170  DF  .~.~ Plural grooves formed in unitary member
171  DF  .~ And additional coaxial surface for engaging same belt in shifted condition or for engaging auxiliary belt, brake, or clutch member
172  DF  .~ Guide roll on axis perpendicular to top surface of belt for engaging side of belt
173  DF  .~.~ And additional guide roll for engaging top or bottom surface of belt
174  DF  .~ Pulley or guide roll including circumferential belt-receiving groove
175  DF  .~.~ Groove formed by rugate or circumferentially spaced drive surfaces
176  DF  .~.~ Groove formed by multiple, abutting, circumferentially connected members
177  DF  .~.~ And circumferentially continuous belt-engaging layer or insert of diverse material added on or between groove-forming flanges
178  DF  .~.~.~ Layer or insert of resilient material
179  DF  .~.~ Including connected discrete axially spaced groove-forming flanges
180  DF  .~.~.~ Connected via nesting cylindrical or conical surfaces integral with the flanges
181  DF  .~.~.~ And abutting radial surfaces integral with the flanges
182  DF  .~.~.~.~ Including connector extending through opening in abutting surfaces
183  DF  .~.~.~.~.~ Connector comprises tang integral with one of the surfaces
184  DF  .~ Pulley or guide roll having plural, discrete belt-engaging faces for engaging flat belt
185  DF  .~.~ Circumferentially spaced faces
186  DF  .~.~.~ And axially spaced faces
187  DF  .~.~ Each face has continuous circumferential periphery
188  DF  .~ Including grooves or openings in cylindrical belt-engaging surface (e.g., for escape of air, etc.)
189  DF  .~.~ Circumferentially extending grooves
190  DF  .~ Including nonmetallic belt-engaging surface portion
191  DF  .~.~ Rubber
192  DF  .~.~.~ With embedded metal layer
193  DF  .~.~ Leather
194  DF  .~.~ Wood or paper
195  DF  .~ With spokes connecting rim to hub
196  DF  .~.~ Plural spoke sets axially spaced
197  DF  .~ Cylindrical rim interconnected to axially spaced support members
198  DF  .~ With stationary support for pulley or guide roll
199  DF  .~.~ And ball or roller bearing for mounting pulley or guide roll on support
200  DF  MOBIUS BELT
201  DF  BELT HAVING DRIVE SURFACES ON OPPOSITE SIDE EDGES OF STACKED PLATES HAVING PLANAR FACES PERPENDICULAR TO DIRECTION OF BELT MOVEMENT
202  DF  POSITIVE DRIVE BELT
203  DF  .~ Drive surfaces on belt formed by spherical or hemispherical elements
204  DF  .~ Drive surfaces on belt formed in or interconnected by continuous flexible member
205  DF  .~.~ Drive surfaces on longitudinally spaced teeth formed integral with flexible member
206  DF  .~ Belt formed of rigid links
207  DF  .~.~ Including nonmetallic part
208  DF  .~.~ Including wire member coiled about pivotal axis between links
209  DF  .~.~ Including ball or roller bearing circumferentially spaced about pivotal axis between links
210  DF  .~.~ Links pivotable about diverse axes during operation (e.g., "universal" connection facilitating alignment with sprockets in diverse planes)
211  DF  .~.~.~ Ball-and-socket connection
212  DF  .~.~ Link including integral surfaces forming inwardly opening groove (e.g., silent chain, etc.)
213  DF  .~.~.~ Plural links having laterally aligned groove-forming surfaces
214  DF  .~.~.~.~ Connector or bearing member extending through or positioned in laterally aligned openings in adjacent links is noncircular in transverse cross section
215  DF  .~.~.~.~.~ Multiple connector or bearing members extend through or positioned in common opening
216  DF  .~.~.~.~.~.~ Concave surface of one connector or bearing member abuts convex surface of another connector or bearing members
217  DF  .~.~.~.~.~.~.~ Plural connector or bearing members with concave surface abut convex surface or surfaces on another connector or bearing member
218  DF  .~.~ Including diverse member for interconnecting opposite ends to complete loop (e.g., repair link for broken chain, etc.)
219  DF  .~.~ Including separate locking member for retaining link-connector in laterally aligned openings through adjacent links
220  DF  .~.~.~ Common locking member retains longitudinally spaced connectors
221  DF  .~.~.~.~ Strandlike locking member (e.g., wire, etc.)
222  DF  .~.~.~ Threaded connection between connector and locking member
223  DF  .~.~.~ Locking member received in annular groove extending entirely around circumference of connector
224  DF  .~.~.~ Locking member includes portion disposed within opening which receives connector
225  DF  .~.~.~.~ Locking member extends through all aligned openings
226  DF  .~.~ Link including discrete members forming laterally spaced sides of opening for pulley tooth
227  DF  .~.~.~ With particular structure facilitating disassembly of adjacent links
228  DF  .~.~.~ With discrete connector extending through laterally aligned apertures in adjacent links
229  DF  .~.~.~.~ Connector has bearing surface which is noncircular in transverse cross section
230  DF  .~.~.~.~ Connector connects sequential links each having discrete members forming laterally spaced sides
231  DF  .~.~.~.~.~ With sleeve rotatable with respect to each link for engaging pulley tooth
232  DF  .~.~ Link including common member forming laterally spaced sides of opening for pulley tooth
233  DF  .~.~.~ With discrete member interconnecting sequential pulley-tooth-receiving links
234  DF  .~.~.~.~ Connector member inserted through lateral opening in pulley-tooth-receiving links
235  DF  .~.~.~ Common member surrounds opening for pulley tooth on all sides
236  DF  .~.~.~.~ Member formed from sheet metal
237  DF  FRICTION DRIVE BELT
238  DF  .~ Including plural interconnected and transversely spaced pairs of oppositely facing side-drive surfaces (e.g., plural "V-belts", etc.)
239  DF  .~ Having drive surface on helically coiled wire or cord
240  DF  .~ Including plural interconnected members each having a drive surface facing in a common direction
241  DF  .~.~ Forming imbricate structure
242  DF  .~.~ Belt has oppositely facing side drive surfaces (e.g., "V-belt", etc.)
243  DF  .~.~.~ Surfaces on ball or roller elements
244  DF  .~.~.~ Oppositely facing surfaces are on pair of discrete elements
245  DF  .~.~.~.~ And sequential pairs are interconnected longitudinally by distinct pivot elements
246  DF  .~.~ Plural, inwardly facing drive surfaces along the direction transverse to longitudinal extent of belt
247  DF  .~.~.~ And plural, inwardly facing drive surfaces along the direction parallel to longitudinal extent of belt
248  DF  .~ Including link-chain coextensive with continuous surface belt
249  DF  .~ Including groove, openings or pockets formed in belt surface and arranged along entire length of belt (e.g., for flexibility, air escape, etc.)
250  DF  .~.~ Grooves transversely extending on belt surface
251  DF  .~.~.~ And additional groove on opposite surface
252  DF  .~.~ Groove continuous and longitudinally extending
253  DF  .~ Including particular means connecting opposite ends to form loop
254  DF  .~.~ Connected by adhering surface on one end to surface on other end (e.g., by adhesive, heat, seal, etc.)
255  DF  .~.~ Including discrete connector
256  DF  .~.~.~ Connector comprises element inserted into longitudinal openings in belt ends
257  DF  .~.~.~ Connector comprises plate clamped externally of belt ends
258  DF  .~.~.~ Connector comprises cord sewn through belt ends
259  DF  .~ Drive surface on single sheet or web wound in plural, completely overlying convolutions
260  DF  .~ Including embedded elongated strand having multiple components or layers of diverse materials
261  DF  .~ Including plural superposed layers each having strands particularly oriented relative to belt dimension
262  DF  .~.~ Strands in the layers are oblique to longitudinal run of belt (e.g., plural layers of bias fabric, etc.)
263  DF  .~ Including discrete embedded fibers
264  DF  .~ Including plural layers of different elastomeric materials
265  DF  .~ Having trapezoidal cross section (e.g., "V-belt", etc.)
266  DF  .~ Including fabric web (e.g., knit, woven, etc.)
267  DF  .~.~ Fabric having particular knit or weave
268  DF  .~.~ And additional coating, layer, or reinforcement of diverse kind of material
269  DF  .~.~.~ Additional material is leather
270  DF  .~.~.~ Additional material is metal
271  DF  .~.~.~ Additional material is rubber
272  DF  .~ Including metallic drive face
273  DF  MISCELLANEOUS
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CROSS-REFERENCE ART COLLECTIONS
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900  DF  PHASE VARIATOR
901  DF  PULLEY OR GUIDE ROLL FOR TRACK OF ENDLESS TRACK VEHICLE
902  DF  PARTICULAR CONNECTION BETWEEN RIM AND HUB
903  DF  PARTICULAR CONNECTION BETWEEN HUB AND SHAFT