Enclosed cab type land vehicle air treatment system

Claim 2

Enclosed cab type land vehicle air treatment system comprising a first part constructed to be mounted upon stationary structure of said vehicle and a second part pivotally and swingably mounted upon said first part so that said second part can be swung by obstacles struck by said second part during operation and movement of said vehicle, said second part being swung rearwardly and downwardly to automatically clear such obstacles, said second part comprising air intake stack means upstanding from said cab so as to be capable of taking in fresh air above a dust zone in which said vehicle operates and moves, and air conduit means connecting the lower end of said stack means to an air-utilizing chamber of said vehicle for supplying said chamber with air taken in by said stack means.

Claim 3

Means as claimed in claim 1, said first part mounted on the top of said cab, deflector means operative above said cab ahead of said first part to deflect said obstacles away from said first part into the path of travel of said stack means to cause it to swing and clear such obstacles.

Claim 4

Means as claimed in claim 1 further comprising means normally holding said stack means at a slight rearward tilt in respect to the vertical so as to decrease its inertia to swinging when struck by obstacles.

Claim 5

Means as claimed in claim 1 further comprising manually operative means in said cab within reach of the vehicle operator for uprighting said stack means after it has been lowered by an obstacle.

Claim 6

Means as claimed in claim 4, said manually operative means further comprising mechanical advantage means for assisting the cab operator in uprighting said stack means after they have been lowered from striking an obstacle.

Claim 7

Means as claimed in claim 4, counterbalancing means for said stack means slowing down its fall when it strikes an obstacle and assisting in the manual raising of said stack means after it has been lowered from striking an obstacle.

Claim 8

Means as claimed in claim 1, air treatment means for treating the air taken in by said stack means including at least air filter means for filtering said air, said air-utilizing chamber being the operator cab of said vehicle for supplying said filtered air to said cab.

Claim 9

Means as claimed in claim 7, air prime mover means for drawing air into said stack means under suction.

Claim 10

Means as claimed in claim 8, sAid first part constructed so that the interior thereof is a relatively air-tight chamber, air passage means connecting the interior of said first part to the interior of said cab so that the latter is supplied with air which passes through said first part, said air prime mover means disposed in the interior of said first part so that it exhausts air into said cab under pressure slightly greater than atmospheric pressure.

Claim 11

Enclosed cab type land vehicle air treatment system comprising a first part constructed to be mounted upon stationary structure of said vehicle and a second part pivotally and swingably mounted upon said first part so that said second part can be swung by obstacles struck by said second part during operation and movement of said vehicle, said second part being swung rearwardly and downwardly to automatically clear such obstacles, said second part comprising air intake stack means upstanding from said cab so as to be capable of taking in fresh air above a dust zone in which said vehicle operates and moves, and air conduit means connecting the lower end of said stack means to an air-utilizing chamber of said vehicle for supplying said chamber with air taken in by said stack means, air filter means for filtering the air taken in by said stack means, said air-utilizing chamber being one associated with the engine of said vehicle for supplying air to said engine.

Claim 12

Enclosed cab type land vehicle air treatment system comprising a first part constructed to be mounted upon stationary structure of said vehicle and a second part pivotally and swingably mounted upon said first part so that said second part can be swung by obstacles struck by said second part during operation and movement of said vehicle, said second part being swung rearwardly and downwardly to automatically clear such obstacles, said second part comprising air intake stack means upstanding from said cab so as to be capable of taking in fresh air above a dust zone in which said vehicle operates and moves, and air conduit means connecting the lower end of said stack means to an air-utilizing chamber of said vehicle for supplying said chamber with air taken in by said stack means, air filter means for filtering the air taken in by said stack means, said air-utilizing chamber being one associated with the engine of said vehicle for supplying air to said engine.

Claim 13

Means as claimed in claim 10, said air-utilizing chamber being the carburetor of said engine for supplying said filtered air to said carburetor.

Claim 14

Means as claimed in claim 10, said air-utilizing chamber being the hydraulic reservoir of the hydraulic system of said vehicle for supplying said filtered air to said hydraulic reservoir.

Claim 15

Enclosed cab type land vehicle air treatment system comprising a first part constructed to be mounted upon stationary structure of said vehicle and a second part pivotally and swingably mounted upon said first part so that said second part can be swung by obstacles struck by said second part during operation and movement of said vehicle, said second part being swung rearwardly and downwardly to automatically clear such obstacles, said second part comprising air intake stack means upstanding from said cab so as to be capable of taking in fresh air above a dust zone in which said vehicle operates and moves, and air conduit means connecting the lower end of said stack means to an air-utilizing chamber of said vehicle for supplying said chamber with air taken in by said stack means, air filter means for filtering the air taken in by said stacks, said air-utilizing chamber being the operator cab of said vehicle for supplying said filtered air to said cab, said air treatment means including air cooling means operative in the interior of said first part for cooling the air which passes through said first part into said cab.

Claim 16

Enclosed cab type land vehicle air treatment system comprising a first part constructed to be mounted upon stationary structure of said vehicle and a second part pivotally and swingably mounted upon said first part so that said second part can be swung by obstacles struck by said second part during operation and movement of said vehicle, said second part being swung rearwardly and downwardly to automatically clear such obstacles, said second part comprising air intake stack means upstanding from said cab so as to be capable of taking in fresh air above a dust zone in which said vehicle operates and moves, and air conduit means connecting the lower end of said stack means to an air-utilizing chamber of said vehicle for supplying said chamber with air taken in by said stack means, air filter means for filtering the air taken in by said stacks, said air-utilizing chamber being the operator cab of said vehicle for supplying said filtered air to said cab, said air treatment means including air cooling means operative in the interior of said first part for cooling the air which passes through said first part into said cab.

Claim 17

Means as claimed in claim 13, said air cooling means comprising plural bottles filled with frozen contents for extracting heat from the air passing through said first part into said cab, said frozen contents producing drinking liquid when melted, whereby to melt the contents of said bottles as and for a supply of drinking liquid for the vehicle operator.

Claim 18

Means as claimed in claim 14, means for conveying said drinking liquid into the interior of said cab within reach of the vehicle operator so that he can dispense the same as he desires.

Claim 19

Enclosed cab type land vehicle air treatment system comprising a first part constructed to be mounted upon stationary structure of said vehicle and a second part pivotally and swingably mounted upon said first part so that said second part can be swung by obstacles struck by said second part during operation and movement of said vehicle, said second part being swung rearwardly and downwardly to automatically clear such obstacles, said second part comprising air intake stack means upstanding from said cab so as to be capable of taking in fresh air above a dust zone in which said vehicLe operates and moves, air conduit means connecting the lower end of said stack means to an air-utilizing chamber of said vehicle for supplying said chamber with air taken in by said stack means, said stack means comprising two separate air intake stacks, one of said stacks pivotally mounted upon said first part, the other stack fast to said first stack so that the two stacks swing together as a unit, said air conduit means connecting the lower end of said one stack with the interior of said cab for supplying said cab with air taken in by said one stack, said air conduit means also connecting the lower end of said other stack with an air-utilizing chamber associated with the engine of said vehicle.

Claim 20

Enclosed cab type land vehicle air treatment system comprising a first part constructed to be mounted upon stationary structure of said vehicle and a second part pivotally and swingably mounted upon said first part so that said second part can be swung by obstacles struck by said second part during operation and movement of said vehicle, said second part being swung rearwardly and downwardly to automatically clear such obstacles, said second part comprising air intake stack means upstanding from said cab so as to be capable of taking in fresh air above a dust zone in which said vehicLe operates and moves, air conduit means connecting the lower end of said stack means to an air-utilizing chamber of said vehicle for supplying said chamber with air taken in by said stack means, said stack means comprising two separate air intake stacks, one of said stacks pivotally mounted upon said first part, the other stack fast to said first stack so that the two stacks swing together as a unit, said air conduit means connecting the lower end of said one stack with the interior of said cab for supplying said cab with air taken in by said one stack, said air conduit means also connecting the lower end of said other stack with an air-utilizing chamber associated with the engine of said vehicle.