Class   305	WHEEL SUBSTITUTES FOR LAND VEHICLES
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STEPPER TYPE

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. (1 indent ) Cam positioned

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. (1 indent ) Having plural link connector elements

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. (1 indent ) Feet attached to rim

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.. (2 indent ) Spring biased

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RIGID PORTABLE TRACK

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. (1 indent ) Circular

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WITH RAIL ENGAGING MEANS

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WITH BRAKE

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WITH MEANS TO REMOVE OR EXCLUDE FOREIGN MATTER (E.G., SEAL, SCRAPER)

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. (1 indent ) With means between track links or shoes

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. (1 indent ) With peripheral seal between bushing and track link

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. (1 indent ) With end seal between bushing and track link

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.. (2 indent ) And at connector pin

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. (1 indent ) With seal between connector pin and bushing

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. (1 indent ) With seal between connector pin and track link

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. (1 indent ) With deflector plate, track guide means, or scraper

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.. (2 indent ) With deflector or guard mounted to track body

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.. (2 indent ) With deflector plate mounted to lateral side of track

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.. (2 indent ) With scraper mounted to scrape track or wheel

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. (1 indent ) With self-cleaning tread or track unit

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.. (2 indent ) Including self-cleaning endless belt

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.. (2 indent ) Having openings through side or base of shoe or link

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.. (2 indent ) With particular shoe, lug, grouser structure, or material

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. (1 indent ) With self-cleaning sprocket or drive wheel

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TRACK GUIDE OR ALIGNMENT MECHANISM

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WITH LUBRICATION

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. (1 indent ) Including passage in connector pin

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. (1 indent ) Including passage in or for roller structure

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COMBINED OR CONVERTIBLE

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WITH FRAME CARRIED ENDLESS TRACK

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. (1 indent ) With roller antifriction means

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.. (2 indent ) Track carried

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.. (2 indent ) Rollers engage toothed wheel or frame

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SINGLE WHEEL TYPE

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WHEEL ON TOP OF UPPER TRACK RUN

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WITH TRACK SUPPORT INTERMEDIATE OF END WHEELS

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. (1 indent ) Including end wheel support for movement to maintain track tension

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. (1 indent ) Intermediate support includes wheel contacting upper and lower track runs

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. (1 indent ) Including elongated slide or frame support

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.. (2 indent ) Combined with at least one intermediate roller

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. (1 indent ) With roller support contacting lower track run

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.. (2 indent ) With frame-mounted rollers

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... (3 indent ) Adjustable or movable frame

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.. (2 indent ) With roller support mounted for movement individually or in pairs

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... (3 indent ) Including individual roller mounted for movement at end of arm

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... (3 indent ) Including walking beam or pivoting arm

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.. (2 indent ) With high drive arrangement

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.. (2 indent ) Specific roller structure, per se

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... (3 indent ) Including structure to engage track (e.g., wear surface, cushion)

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.. (2 indent ) With roller mounting means

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.. (2 indent ) With intermediate upper track run support

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.. (2 indent ) With endless roller chain support

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.. (2 indent ) With vertically movable wheel support

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.. (2 indent ) With plural wheel support

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WITH MEANS FOR TENSIONING TRACK BY MOVING AT LEAST ONE ENDWHEEL

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. (1 indent ) Condition responsive (e.g., inclination, speed, operator command)

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. (1 indent ) Having hydraulic adjusting means

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.. (2 indent ) Including spring device (e.g., coil spring)

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... (3 indent ) Coil spring housed within hydraulic cylinder

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.. (2 indent ) Including gas recoil

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.. (2 indent ) With vent or relief valve

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. (1 indent ) Vertically movable endwheel

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. (1 indent ) Biased by spring only

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.. (2 indent ) Longitudinally outwardly biased by coil spring only

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. (1 indent ) Longitudinally adjustable

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.. (2 indent ) Including threaded tension adjuster

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. (1 indent ) With intermediate support member (e.g., linkage)

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. (1 indent ) Tensioner contained within idler wheel

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WITH INTERPOSED FRICTION DRIVE BELT

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INFLATABLE MEANS

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ENDLESS BELT HAVING NONMETALLIC TRACK OR TREAD

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. (1 indent ) Track formed of flexible sections

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. (1 indent ) Track formed of rigid nonmetallic links

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.. (2 indent ) Lug, shoe, or grouser structure, per se

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... (3 indent ) With mounting means

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.... (4 indent ) Including threaded fastening means

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.. (2 indent ) With noncylindrical or hollow connector pin

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.. (2 indent ) Including metal sleeve for connector pin

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. (1 indent ) Track formed of endless flexible belt

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.. (2 indent ) Including plural layers of different materials

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.. (2 indent ) With metallic embedded reinforcement

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... (3 indent ) Including clip for snowmobile track

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... (3 indent ) Including means for sprocket tooth engagement (e.g.,lug aperture)

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... (3 indent ) Reinforcement is endless

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.... (4 indent ) Including core bar reinforcement

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....• (5 indent ) With overlapping core bar sections

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....• (5 indent ) Including sprocket wheel or roller guide lug or projection

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....•. (6 indent ) Plural lugs or projections

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....•.. (7 indent ) Including additional reinforcement for sprocket wheel

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.... (4 indent ) Portion of resilient belt overlaps core bar (e.g., roller engagement surface)

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... (3 indent ) Including core bar reinforcement

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.. (2 indent ) With integral grouser

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... (3 indent ) With reinforcement in or at grouser formation

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.. (2 indent ) With removable lug or grouser

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.. (2 indent ) Grouser connects plural adjacent belts

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.. (2 indent ) Including discrete connector to connect opposite belt ends

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. (1 indent ) With connecting means for reinforcement elements

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. (1 indent ) With friction drive structure

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TRACKS OR TREADS

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. (1 indent ) Cable connected treads

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. (1 indent ) Resilient connection between treads

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.. (2 indent ) Torsion bushing

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.. (2 indent ) Resilient compressible hinge

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. (1 indent ) Steerable

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. (1 indent ) Adjustable connection between treads

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. (1 indent ) With resiliently biased ground engaging portion

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. (1 indent ) With sag prevention means

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.. (2 indent ) Projecting truss type

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... (3 indent ) Truss interconnected

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. (1 indent ) Track treads interconnected without separate fastening means

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. (1 indent ) With street plate

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. (1 indent ) With roller means

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. (1 indent ) One piece track tread

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. (1 indent ) Having master link

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. (1 indent ) With detachable grouser for endless chain track

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.. (2 indent ) Including additional locking means to elminate stress concentration

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.. (2 indent ) Including nonmetallic part or component

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.. (2 indent ) Reversible

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.. (2 indent ) Grouser structure, per se

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... (3 indent ) Specific material (e.g., hardness, welding, method of manufacture)

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. (1 indent ) With guide means for interfitting with sprocket wheel or roller

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.. (2 indent ) Track wheel wear protection (e.g., track element protection)

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.. (2 indent ) Sprocket and track engagement

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... (3 indent ) Track formed of rigid links

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.... (4 indent ) Having nonmetallic part or component (e.g., at area of engagement)

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.... (4 indent ) Link or shoe structure, per se

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... (3 indent ) Sprocket wheel structure, per se

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.. (2 indent ) Track formed of rigid links

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... (3 indent ) Link or shoe structure, per se

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. (1 indent ) Separate transverse connector pin between treads

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.. (2 indent ) Including nonmetallic part or component

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.. (2 indent ) Including additional locking member for retaining link connectors (e.g., pin connectors)

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.. (2 indent ) Including noncylindrical or hollow connector pin

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MISCELLANEOUS

	CROSS-REFERENCE ART COLLECTIONS

900

MASTER LINK

	FOREIGN ART COLLECTIONS

FOR000

CLASS-RELATED FOREIGN DOCUMENTS

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