Driving device for motor driven vehicles

Claim 2

In a driving device for a motor driven snow vehicle comprising a vehicle body, a pair of power driven toothed sprocket wheels journaled on opposite ends of said body, a flexible endless track engaged over said sprocket wheels and having a plurality of spaced apart holes formed therein for meshing with the teeth of said sprocket wheels, the improvement comprising: a. a transverse shaft fixedly secured to said body in underlying relation thereto; b. a pair of arms journaled on said shaft; c. resilient means biasing said arms downwardly and inwardly toward each other; d. an axle secured to the lower end of each of said arms; e. a track-engaging wheel journaled on each of said axles; f. a bracket journaled on and depending from said shaft; g. a leaf spring mounted on the lower end of said bracket; and h. a covering plate secured to said leaf spring and biased into hole covering contact with the inner face of said track.

Claim 3

In a driving device for a motor driven snow vehicle comprising a vehicle body, a pair of power driven toothed sprocket wheels journaled on opposite ends of said body, a flexible endless track engaged over said sprocket wheels and having a plurality of spaced apart holes formed therein for meshing with the teeth of said sprocket wheels, the improvement comprising: a. a transverse shaft fixedly secured to said body in underlying relation thereto; b. a pair of arms journaled on said shaft; c. resilient means biasing said arms downwardly and inwardly toward each other; d. an axle secured to the lower end of each of said arms; e. a track-engaging wheel journaled on each of said axles; f. a bracket journaled on and depending from said shaft; g. a leaf spring mounted on the lower end of said bracket; and h. a covering plate secured to said leaf spring and biased into hole covering contact with the inner face of said track.

Claim 4

In a driving device for a motor driven snow vehicle comprising a vehicle body, a pair of power driven toothed sprocket wheels journaled on opposite ends of said body, a flexible endless track engaged over said sprocket wheels and having a plurality of spaced apart holes formed therein for meshing with the teeth of said sprocket wheels, the improvement comprising: a. a transverse shaft fixedly secured to said body in underlying relation thereto; b. a pair of arms journaled on said shaft; c. resilient means biasing said arms downwardly and inwardly toward each other; d. an axle secured to the lower end of each of said arms; e. a track-engaging wheel journaled on each of said axles; f. a bracket journaled on and depending from said shaft; g. a leaf spring mounted on the lower end of said bracket; and h. a covering plate secured to said leaf spring and biased into hole covering contact with the inner face of said track.

Claim 5

In a driving device for a motor driven vehicle comprising a vehicle body, a pair of power driven toothed sprocket wheels journaled on front and rear ends of said body, a flexible endless track engaged over said sprocket wheels and having a plurality of longitudinally spaced apart holes formed therein for meshing with the teeth of said sprocket wheels, the improvement, comprising: a. a transverse shaft fixedly secured to said body; b. a pair of frontwardly and rearwardly extending arms journaled on said transverse shaft; c. first resilient means biasing said arms downwardly and inwardly toward each other; d. track-engaging suspension wheels mounted on said arms; e. a plurality of closing plates engaging with said track to cover said holes at the inside of the lower run of said track and supported under and by said body along the longitudinal line on which said holes are located; and f. second resilient means comprising separate spring means for each of said closing plates mounted on the lower portion of said body for urging said closing plates onto the inner face of said track.

Claim 6

In a driving device for a motor driven vehicle comprising a vehicle body, a pair of power driven toothed sprocket wheels journaled on front and rear ends of said body, a flexible endless track engaged over said sprocket wheels and having a plurality of longitudinally spaced apart holes formed therein for meshing with the teeth of said sprocket wheels, the improvement, comprising: a. a transverse shaft fixedly secured to said body; b. a pair of frontwardly and rearwardly extending arms journaled on said transverse shaft; c. first resilient means biasing said arms downwardly and inwardly toward each other; d. track-engaging suspension wheels mounted on said arms; e. a plurality of closing plates engaging with said track to cover said holes at the inside of the lower run of said track and supported under and by said body along the longitudinal line on which said holes are located; and f. second resilient means comprising separate spring means for each of said closing plates mounted on the lower portion of said body for urging said closing plates onto the inner face of said track.

Claim 7

A driving device for a motor driven snow vehicle as set forth in claim 2 wherein the closing plate closest to the forward end of said vehicle is substantially L-shaped.

Claim 8

A driving device for a motor driven snow vehicle as set forth in claim 2 wherein each of said spring means is swingably suspended from said transverse shaft.

Claim 9

A driving device for a motor driven snow vehicle as set forth in claim 2 wherein each of said spring means comprises a bow-shaped leaf spring.