| Class Number |
Class Name |
No. of Patents |
| 305/15 |
Combined or convertible |
22 |
| 305/157 |
Endless belt having nonmetallic track or tread |
32 |
| 305/165 |
Track formed of endless flexible belt |
84 |
| 305/181 |
Grouser connects plural adjacent belts |
26 |
| 305/182 |
Including discrete connector to connect opposite belt ends |
5 |
| 305/166 |
Including plural layers of different materials |
18 |
| 305/178 |
With integral grouser |
66 |
| 305/179 |
With reinforcement in or at grouser formation |
23 |
| 305/167 |
With metallic embedded reinforcement |
57 |
| 305/168 |
Including clip for snowmobile track |
25 |
| 305/177 |
Including core bar reinforcement |
27 |
| 305/169 |
Including means for sprocket tooth engagement (e.g.,lug aperture) |
22 |
| 305/170 |
Reinforcement is endless |
28 |
| 305/171 |
Including core bar reinforcement |
26 |
| 305/173 |
Including sprocket wheel or roller guide lug or projection |
18 |
| 305/174 |
Plural lugs or projections |
15 |
| 305/175 |
Including additional reinforcement for sprocket wheel |
2 |
| 305/172 |
With overlapping core bar sections |
5 |
| 305/176 |
Portion of resilient belt overlaps core bar (e.g., roller engagement surface) |
6 |
| 305/180 |
With removable lug or grouser |
75 |
| 305/158 |
Track formed of flexible sections |
12 |
| 305/159 |
Track formed of rigid nonmetallic links |
10 |
| 305/164 |
Including metal sleeve for connector pin |
7 |
| 305/160 |
Lug, shoe, or grouser structure, per se |
26 |
| 305/161 |
With mounting means |
9 |
| 305/162 |
Including threaded fastening means |
14 |
| 305/163 |
With noncylindrical or hollow connector pin |
5 |
| 305/183 |
With connecting means for reinforcement elements |
5 |
| 305/184 |
With friction drive structure |
16 |
| 305/34 |
Inflatable means |
23 |
| 305/900 |
Master link |
0 |
| 305/60 |
Miscellaneous |
40 |
| 305/6 |
Rigid portable track |
8 |
| 305/7 |
Circular |
11 |
| 305/19 |
Single wheel type |
30 |
| 305/1 |
Stepper type |
11 |
| 305/2 |
Cam positioned |
1 |
| 305/4 |
Feet attached to rim |
6 |
| 305/5 |
Spring biased |
6 |
| 305/3 |
Having plural link connector elements |
5 |
| 305/116 |
Track guide or alignment mechanism |
29 |
| 305/185 |
Tracks or treads |
35 |
| 305/45 |
Adjustable connection between treads |
4 |
| 305/40 |
Cable connected treads |
19 |
| 305/186 |
Having master link |
24 |
| 305/53 |
One piece track tread |
20 |
| 305/41 |
Resilient connection between treads |
12 |
| 305/43 |
Resilient compressible hinge |
10 |
| 305/42 |
Torsion bushing |
12 |
| 305/202 |
Separate transverse connector pin between treads |
66 |
| 305/204 |
Including additional locking member for retaining link connectors (e.g., pin connectors) |
33 |
| 305/59 |
Including noncylindrical or hollow connector pin |
22 |
| 305/203 |
Including nonmetallic part or component |
15 |
| 305/44 |
Steerable |
13 |
| 305/50 |
Track treads interconnected without separate fastening means |
5 |
| 305/187 |
With detachable grouser for endless chain track |
33 |
| 305/191 |
Grouser structure, per se |
32 |
| 305/192 |
Specific material (e.g., hardness, welding, method of manufacture) |
20 |
| 305/188 |
Including additional locking means to elminate stress concentration |
17 |
| 305/189 |
Including nonmetallic part or component |
43 |
| 305/190 |
Reversible |
5 |
| 305/193 |
With guide means for interfitting with sprocket wheel or roller |
50 |
| 305/195 |
Sprocket and track engagement |
67 |
| 305/199 |
Sprocket wheel structure, per se |
89 |
| 305/196 |
Track formed of rigid links |
20 |
| 305/197 |
Having nonmetallic part or component (e.g., at area of engagement) |
28 |
| 305/198 |
Link or shoe structure, per se |
20 |
| 305/200 |
Track formed of rigid links |
10 |
| 305/201 |
Link or shoe structure, per se |
32 |
| 305/194 |
Track wheel wear protection (e.g., track element protection) |
19 |
| 305/46 |
With resiliently biased ground engaging portion |
29 |
| 305/52 |
With roller means |
12 |
| 305/47 |
With sag prevention means |
10 |
| 305/48 |
Projecting truss type |
2 |
| 305/49 |
Truss interconnected |
2 |
| 305/51 |
With street plate |
36 |
| 305/20 |
Wheel on top of upper track run |
7 |
| 305/9 |
With brake |
5 |
| 305/120 |
With frame carried endless track |
32 |
| 305/121 |
With roller antifriction means |
9 |
| 305/123 |
Rollers engage toothed wheel or frame |
5 |
| 305/122 |
Track carried |
8 |
| 305/33 |
With interposed friction drive belt |
5 |
| 305/117 |
With lubrication |
22 |
| 305/118 |
Including passage in connector pin |
16 |
| 305/119 |
Including passage in or for roller structure |
15 |
| 305/143 |
With means for tensioning track by moving at least one endwheel |
30 |
| 305/151 |
Biased by spring only |
5 |
| 305/152 |
Longitudinally outwardly biased by coil spring only |
15 |
| 305/144 |
Condition responsive (e.g., inclination, speed, operator command) |
27 |
| 305/145 |
Having hydraulic adjusting means |
46 |
| 305/148 |
Including gas recoil |
9 |
| 305/146 |
Including spring device (e.g., coil spring) |
20 |
| 305/147 |
Coil spring housed within hydraulic cylinder |
9 |
| 305/149 |
With vent or relief valve |
14 |
| 305/153 |
Longitudinally adjustable |
24 |
| 305/154 |
Including threaded tension adjuster |
22 |
| 305/156 |
Tensioner contained within idler wheel |
6 |
| 305/150 |
Vertically movable endwheel |
6 |
| 305/155 |
With intermediate support member (e.g., linkage) |
14 |
| 305/100 |
With means to remove or exclude foreign matter (e.g., seal, scraper) |
53 |
| 305/107 |
With deflector plate, track guide means, or scraper |
37 |
| 305/108 |
With deflector or guard mounted to track body |
9 |
| 305/109 |
With deflector plate mounted to lateral side of track |
16 |
| 305/110 |
With scraper mounted to scrape track or wheel |
28 |
| 305/103 |
With end seal between bushing and track link |
66 |
| 305/104 |
And at connector pin |
33 |
| 305/101 |
With means between track links or shoes |
9 |
| 305/102 |
With peripheral seal between bushing and track link |
10 |
| 305/105 |
With seal between connector pin and bushing |
12 |
| 305/106 |
With seal between connector pin and track link |
21 |
| 305/115 |
With self-cleaning sprocket or drive wheel |
28 |
| 305/111 |
With self-cleaning tread or track unit |
20 |
| 305/113 |
Having openings through side or base of shoe or link |
5 |
| 305/112 |
Including self-cleaning endless belt |
0 |
| 305/114 |
With particular shoe, lug, grouser structure, or material |
8 |
| 305/8 |
With rail engaging means |
0 |
| 305/124 |
With track support intermediate of end wheels |
30 |
| 305/127 |
Including elongated slide or frame support |
52 |
| 305/128 |
Combined with at least one intermediate roller |
16 |
| 305/125 |
Including end wheel support for movement to maintain track tension |
39 |
| 305/126 |
Intermediate support includes wheel contacting upper and lower track runs |
10 |
| 305/129 |
With roller support contacting lower track run |
23 |
| 305/136 |
Specific roller structure, per se |
60 |
| 305/137 |
Including structure to engage track (e.g., wear surface, cushion) |
53 |
| 305/140 |
With endless roller chain support |
0 |
| 305/130 |
With frame-mounted rollers |
24 |
| 305/131 |
Adjustable or movable frame |
16 |
| 305/135 |
With high drive arrangement |
23 |
| 305/139 |
With intermediate upper track run support |
25 |
| 305/142 |
With plural wheel support |
14 |
| 305/138 |
With roller mounting means |
44 |
| 305/132 |
With roller support mounted for movement individually or in pairs |
32 |
| 305/133 |
Including individual roller mounted for movement at end of arm |
8 |
| 305/134 |
Including walking beam or pivoting arm |
8 |
| 305/141 |
With vertically movable wheel support |
5 |
