Pneumatically actuated dumping bin

Claim 2

A pneumatically actuated dumping bin for a cargo bed of a vehicle, comprising: a bin comprising a floor portion, a left side wall portion, a right side wall portion and a rear wall portion, said bin being adapted to be received within the cargo bed of the vehicle for selective movement while horizontal between a first travel position and a second dumping position, said bin being substantially within said cargo bed of said vehicle when said bin is in the first travel position, and said bin extending substantially beyond a rear end of said cargo bed of said vehicle when said bin is in said second dumping position; a pneumatic piston and cylinder, said cylinder being connected to said bin adjacent said rear wall portion with said cylinder being carried by said bin in a substantially vertical orientation while said bin is moved between said first and second positions; engagement means for limiting rearward movement of said bin relative to said cargo bed of the vehicle, said engagement means including an engaement member mounted on said bin generally at a mid-point of said bin and means for pivotably engaging said engagement member, said means for pivotably engaging said engagement member including a member mounted at a rearward end of said cargo bed whereby said bin is pivotable generally about a mid-point of said bin when said bin is in said second dumping position; compressed air means for selectively actuating said pneumatic piston and cylinder to raise said bin at said rear wall portion when said bin is in said second dumping position; a plurality of wheels mounted on the underside of said bin to facilitate said selective movement of the bin between the first travel position and the second dumping position.

Claim 3

The apparatus of claim 1, wherein said engagement member comprises a rod member mounted transversely on the underside of said bin and slightly forward of the mid-point of said bin, and wherein said member of said means for pivotably engaging comprises a hook member mounted on said cargo bed of said vehicle at said rearward end of said cargo bed, said rod member being releasably received within said hook member and said bin pivoting about said rod member when said pneumatic piston and cylinder is actuated.

Claim 4

The apparatus of claim 2, wherein said plurality of wheels are arranged in rows provided adjacent a rear end of said bin, adjacent to and on both sides of said rod member and adjacent a front end of said bin.

Claim 5

The apparatus of claim 1, wherein said rear wall portion of said bin includes a recess with said pneumatic piston and cylinder being received within said recess with said pneumatic piston and cylinder being pivotably connected to said bin at an upper portion of said recess, said pneumatic piston and cylinder being carried by said bin in said substantial vertical orientation while said bin is moved between said first travel position and said second dumping position.

Claim 6

The apparatus of claim 4, wherein said recess is located at a mid-section of said rear wall portion.

Claim 7

The apparatus of claim 1, wherein said compressed air means includes an electrical air compressor, said electrical air compressor being adapted to be powered by the battery of said vehicle.

Claim 8

The apparatus of claim 4, wherein said right side wall portion and said left side wall portion of said bin extend substantially at right angles to said floor portion, said rear wall portion extending at an obtuse angle to said floor portion.

Claim 9

The apparatus of claim 7, wherein said rear wall portion extends substantially vertically when said bin is in said second dumping position and said pneumatic piston and cylinder is actuated and when said cargo bed of said vehicle is oriented horizontally.

Claim 10

The apparatus of claim 8, wherein said right side wall portion and said left side wall portion of said bin have a reduced height adjacent said rear wall portion of said bin.

Claim 11

The apparatus of claim 9, wherein the uppermost edges of the rear wall portion, the left side wall portion and the right side wall portion at the rear end of the bin define a plane which extends substantially perpendicular to said rear wall portion.

Claim 12

The apparatus of claim 7, further comprising stop means for limiting a forward movement of said bin in said cargo bed of said vehicle.

Claim 13

The apparatus of claim 11, wherein said stop means includes at least one member having an end portion oriented at an angle corresponding to said obtuse angle of said rear wall portion and arranged so as to engage said rear wall portion when said bin is urged forwardly in said bed of said vehicle.

Claim 14

The apparatus of claim 1, wherein said bin further comprises a front wall portion.

Claim 15

The apparatus of claim 13, wherein said front wall portion includes a gate member selectively removable from said bin.

Claim 16

The apparatus of claim 14, wherein said gate member is pivotably mounted on said side wall portions of said bin at an upper end of said gate member.

Claim 17

The apparatus of claim 15, wherein said gate member includes left and right pin members which extend longitudinally from the upper end of said gate member, said left and right pin members being rotatably received within said left and right side wall portions of said bin.

Claim 18

A pneumatically actuated dumping bin for a cargo bed of a vehicle, comprising: a bin comprising a floor portion, a front wall portion, a left side wall portion, a right side wall portion and a rear wall portion, said front wall portion including a gate member selectively removable from said bin, said gate member being pivotably mounted on said side wall portions of said bin at an upper end of said gate member, said gate member including left and right pin members which extend longitudinally from the upper end of said gate member, said left and right pin members being rotatably received within said left and right side wall portions of said bin, wherein said left pin member extends beyond the left edge of the gate member and said right pin member extends beyond the right edge of the gate member, said pin members being fixedly mounted on the gate member and wherein said gate member is recessed along a portion of one of said left and right edges at one of said pin members whereby said gate member may be raised and then urged first toward one of said side wall portions and then toward the other of said side wall portions to disengage said pin members from said sidewall portions of said bin, said bin being adapted to be received within the cargo bed of the vehicle for selective movement while horizonal between a first travel position and a second dumping position, said bin being substantially within said cargo bed of said vehicle when said bin is in the first travel position, and said bin extending substantially beyond a rear end of said cargo bed of said vehicle when said bin is in said second dumping position; a pneumatic piston and cylinder, said cylinder being connected to said bin adjacent said rear wall portion with said cylinder being substantially vertical when said bin is horizontal; compressed air means for selectively actuating said pneumatic piston and cylinder to raise said bin at said rear wall portion when said bin is in said second dumping position; a plurality of wheels mounted on the underside of said bin to facilitate said selective movement of the bin between the first travel position and the second dumping position.

Claim 19

A pneumatically actuated dumping bin for a cargo bed of a vehicle, comprising: a bin comprising a floor portion, a front wall portion, a left side wall portion, a right side wall portion and a rear wall portion, said front wall portion including a gate member selectively removable from said bin, said gate member being pivotably mounted on said side wall portions of said bin at an upper end of said gate member, said gate member including left and right pin members which extend longitudinally from the upper end of said gate member, said left and right pin members being rotatably received within said left and right side wall portions of said bin, wherein said left pin member extends beyond the left edge of the gate member and said right pin member extends beyond the right edge of the gate member, said pin members being fixedly mounted on the gate member and wherein said gate member is recessed along a portion of one of said left and right edges at one of said pin members whereby said gate member may be raised and then urged first toward one of said side wall portions and then toward the other of said side wall portions to disengage said pin members from said sidewall portions of said bin, said bin being adapted to be received within the cargo bed of the vehicle for selective movement while horizonal between a first travel position and a second dumping position, said bin being substantially within said cargo bed of said vehicle when said bin is in the first travel position, and said bin extending substantially beyond a rear end of said cargo bed of said vehicle when said bin is in said second dumping position; a pneumatic piston and cylinder, said cylinder being connected to said bin adjacent said rear wall portion with said cylinder being substantially vertical when said bin is horizontal; compressed air means for selectively actuating said pneumatic piston and cylinder to raise said bin at said rear wall portion when said bin is in said second dumping position; a plurality of wheels mounted on the underside of said bin to facilitate said selective movement of the bin between the first travel position and the second dumping position.

Claim 20

A pneumatically actuated dumping bin for a cargo bed of a vehicle, comprising: a bin comprising a floor portion, a left side wall portion, a right side wall portion, a front wall portion and a rear wall portion, said bin being adapted to be received within the cargo bed of the vehicle for selective movement while horizontal between a first travel position and a second dumping position, said bin being completely within said cargo bed of said vehicle when said bin is in the first travel position and said bin extending substantially beyond a rear end of said cargo bed of said vehicle when said bin is in said second dumping position, said front wall portion including a gate member selectively removable from said bin with said gate member being pivotably mounted on said side wall portions of said bin at an upper end of said gate member, and including left and right pin members which extend longitudinally from the upper end of said gate member, said left and right pin members being rotatably received within said left and right sidewall portions of said bin, said gate member being recessed at one of said pin members whereby said gate member may be urged first toward one of said side wall portions and then toward the other of said side wall portions to disengage said pin members from said side wall portions of said bin; a pneumatic piston and cylinder, said cylinder being pivotably connected to said bin adjacent said rear wall portion, said cylinder being substantially vertical when said bin is horizontal, said rear wall portion of said bin including a recessed portion at a mid-section of said rear wall portion with said pneumatic piston and cylinder being received within said recess with said cylinder being pivotably connected to said bin at an upper portion of said recess; compressed air means for selectively actuating said pneumatic piston and cylinder to raise said bin at said rear wall portion when said bin is in said second dumping position; catch means for limiting rearward movement of said bin relative to said cargo bed of the vehicle, said catch means including a rod member mounted transversely on the underside of said bin generally at a mid-point of said bin which rod member is releasably received within a hook member mounted on said cargo bed of said vehicle at a rearward end of said cargo bed, said bin pivoting about said rod member when said bin is in said second dumping position and said pneumatic piston and cylinder is actuated; and a plurality of wheels mounted on the underside of said bin to facilitate said selective movement of the bin between the first travel position and the second dumping position, said plurality of wheels being arranged in rows provided adjacent a rear end of said bin, adjacent to and on both sides of said rod member and adjacent a front end of said bin.

Claim 21

A pneumatically actuated dumping bin for a cargo bed of a vehicle, comprising: a bin comprising a floor portion, a left side wall portion, a right side wall portion, a front wall portion and a rear wall portion, said bin being adapted to be received within the cargo bed of the vehicle for selective movement while horizontal between a first travel position and a second dumping position, said bin being completely within said cargo bed of said vehicle when said bin is in the first travel position and said bin extending substantially beyond a rear end of said cargo bed of said vehicle when said bin is in said second dumping position, said front wall portion including a gate member selectively removable from said bin with said gate member being pivotably mounted on said side wall portions of said bin at an upper end of said gate member, and including left and right pin members which extend longitudinally from the upper end of said gate member, said left and right pin members being rotatably received within said left and right sidewall portions of said bin, said gate member being recessed at one of said pin members whereby said gate member may be urged first toward one of said side wall portions and then toward the other of said side wall portions to disengage said pin members from said side wall portions of said bin; a pneumatic piston and cylinder, said cylinder being pivotably connected to said bin adjacent said rear wall portion, said cylinder being substantially vertical when said bin is horizontal, said rear wall portion of said bin including a recessed portion at a mid-section of said rear wall portion with said pneumatic piston and cylinder being received within said recess with said cylinder being pivotably connected to said bin at an upper portion of said recess; compressed air means for selectively actuating said pneumatic piston and cylinder to raise said bin at said rear wall portion when said bin is in said second dumping position; catch means for limiting rearward movement of said bin relative to said cargo bed of the vehicle, said catch means including a rod member mounted transversely on the underside of said bin generally at a mid-point of said bin which rod member is releasably received within a hook member mounted on said cargo bed of said vehicle at a rearward end of said cargo bed, said bin pivoting about said rod member when said bin is in said second dumping position and said pneumatic piston and cylinder is actuated; and a plurality of wheels mounted on the underside of said bin to facilitate said selective movement of the bin between the first travel position and the second dumping position, said plurality of wheels being arranged in rows provided adjacent a rear end of said bin, adjacent to and on both sides of said rod member and adjacent a front end of said bin.

Claim 22

A pneumatically actuated dumping bin for a cargo bed of a vehicle, comprising: a bin comprising a floor portion, a left side wall portion, a right side wall portion, a front wall portion and a rear wall portion, said bin being adapted to be received within the cargo bed of the vehicle for selective movement while horizontal between a first travel position and a second dumping position, said bin being completely within said cargo bed of said vehicle when said bin is in the first travel position and said bin extending substantially beyond a rear end of said cargo bed of said vehicle when said bin is in said second dumping position, said front wall portion including a gate member selectively removable from said bin with said gate member being pivotably mounted on said side wall portions of said bin at an upper end of said gate member, and including left and right pin members which extend longitudinally from the upper end of said gate member, said left and right pin members being rotatably received within said left and right side wall portions of said bin, said gate member being recessed at one of said pin members whereby said gate member may be urged first toward one of said side wall portions and then toward the other of said side wall portions to disengage said pin members from said side wall portions of said bin, said right side wall portion and said left side wall portion of said bin extending substantially at right angles to said floor portion, said rear wall portion extending at an obtuse angle to said floor portion, said right side wall portion and said left side wall portion of said bin having a reduced height adjacent said rear wall portion of said bin, the uppermost edges of the rear wall portion, the left side wall portion and the right side wall portion at the rear end of the bin defining a plane which extends substantially perpendicularly to said rear wall portion; stop means for limiting forward movement of said bin in said cargo bed of said vehicle, said stop means including at least one member having an end portion oriented at an angle corresponding to said obtuse angle of said rear wall portion and arranged so as to engage said rear wall portion when said bin is urged forwardly in said cargo bed of said vehicle; a pneumatic piston and cylinder, said pneumatic piston and cylinder being pivotably connected to said bin adjacent said rear wall portion, said pneumatic piston and cylinder being substantially vertical when said bin is horizontal, said rear wall portion of said bin including a recessed portion at a mid-section of said rear wall portion with said pneumatic piston and cylinder being received within said recess with said pneumatic piston and cylinder being pivotably connected at a first upper end of said pneumatic piston and cylinder to said bin at an upper portion of said recess and a second lower end of said pneumatic piston and cylinder being unconnected, said rear wall portion of said bin extending substantially vertically when said bin is in said second dumping position and said pneumatic piston and cylinder is actuated and when said cargo bed of said vehicle is oriented horizontally; compressed air means for selectively actuating said pneumatic piston and cylinder to raise said bin at said rear wall portion when said bin is in said second dumping position, said compressed air means including an electrical air compressor adapted to be powered by the battery of said vehicle; catch means for limiting rearward movement of said bin relative to said cargo bed of the vehicle, said catch means including a rod member mounted transversely on the underside of said bin forward of a mid-point of said bin which rod member is releasably received within a hook member mounted on said cargo bed of said vehicle at a rearward end of said cargo bed, said bin pivoting about said rod member when said pneumatic piston and cylinder is actuated; and a plurality of wheels mounted on the underside of said bin to facilitate said selected movement of the bin between the first travel position and the second dumping position, said plurality of wheels being arranged in rows provided adjacent a rear end of said bin, adjacent to and on both sides of said rod member and adjacent a front end of said bin.

Claim 23

A pneumatically actuated dumping bin for a cargo bed of a vehicle, comprising: a bin comprising a floor portion, a left side wall portion, a right side wall portion, a front wall portion and a rear wall portion, said bin being adapted to be received within the cargo bed of the vehicle for selective movement while horizontal between a first travel position and a second dumping position, said bin being completely within said cargo bed of said vehicle when said bin is in the first travel position and said bin extending substantially beyond a rear end of said cargo bed of said vehicle when said bin is in said second dumping position, said front wall portion including a gate member selectively removable from said bin with said gate member being pivotably mounted on said side wall portions of said bin at an upper end of said gate member, and including left and right pin members which extend longitudinally from the upper end of said gate member, said left and right pin members being rotatably received within said left and right side wall portions of said bin, said gate member being recessed at one of said pin members whereby said gate member may be urged first toward one of said side wall portions and then toward the other of said side wall portions to disengage said pin members from said side wall portions of said bin, said right side wall portion and said left side wall portion of said bin extending substantially at right angles to said floor portion, said rear wall portion extending at an obtuse angle to said floor portion, said right side wall portion and said left side wall portion of said bin having a reduced height adjacent said rear wall portion of said bin, the uppermost edges of the rear wall portion, the left side wall portion and the right side wall portion at the rear end of the bin defining a plane which extends substantially perpendicularly to said rear wall portion; stop means for limiting forward movement of said bin in said cargo bed of said vehicle, said stop means including at least one member having an end portion oriented at an angle corresponding to said obtuse angle of said rear wall portion and arranged so as to engage said rear wall portion when said bin is urged forwardly in said cargo bed of said vehicle; a pneumatic piston and cylinder, said pneumatic piston and cylinder being pivotably connected to said bin adjacent said rear wall portion, said pneumatic piston and cylinder being substantially vertical when said bin is horizontal, said rear wall portion of said bin including a recessed portion at a mid-section of said rear wall portion with said pneumatic piston and cylinder being received within said recess with said pneumatic piston and cylinder being pivotably connected at a first upper end of said pneumatic piston and cylinder to said bin at an upper portion of said recess and a second lower end of said pneumatic piston and cylinder being unconnected, said rear wall portion of said bin extending substantially vertically when said bin is in said second dumping position and said pneumatic piston and cylinder is actuated and when said cargo bed of said vehicle is oriented horizontally; compressed air means for selectively actuating said pneumatic piston and cylinder to raise said bin at said rear wall portion when said bin is in said second dumping position, said compressed air means including an electrical air compressor adapted to be powered by the battery of said vehicle; catch means for limiting rearward movement of said bin relative to said cargo bed of the vehicle, said catch means including a rod member mounted transversely on the underside of said bin forward of a mid-point of said bin which rod member is releasably received within a hook member mounted on said cargo bed of said vehicle at a rearward end of said cargo bed, said bin pivoting about said rod member when said pneumatic piston and cylinder is actuated; and a plurality of wheels mounted on the underside of said bin to facilitate said selected movement of the bin between the first travel position and the second dumping position, said plurality of wheels being arranged in rows provided adjacent a rear end of said bin, adjacent to and on both sides of said rod member and adjacent a front end of said bin.

Claim 24

A pneumatically actuated dumping bin for a cargo bed of a vehicle, comprising: a bin comprising a floor portion, a left side wall portion, a right side wall portion and a rear wall portion, said bin being adapted to be received within the cargo bed of the vehicle for selective movement while horizontal between a first travel position and a second dumping position, said bin being substantially within said cargo bed of said vehicle when said bin is in the first travel position, and said bin extending substantially beyond a rear end of said cargo bed of said vehicle when said bin is in said second dumping position; pneumatic piston and cylinder, said cylinder being connected to said bin adjacent said rear wall portion with said cylinder being substantially vertical when said bin is horizontal, said pneumatic piston and cylinder being pivotably connected to said bin at a first upper end of said pneumatic piston and cylinder and a second lower end of said pneumatic piston and cylinder being unconnected; compressed air means for selectively actuating said pneumatic piston and cylinder to raise said bin at said rear wall portion when said bin is in said second dumping position; a plurality of wheels mounted on the underside of said bin to facilitate said selective movement of the bin between the first travel position and the second dumping position.

Claim 25

A pneumatically actuated dumping bin for a cargo bed of a vehicle, comprising: a bin comprising a floor portion, a left side wall portion, a right side wall portion and a rear wall portion, said bin being adapted to be received within the cargo bed of the vehicle for selective movement while horizontal between a first travel position and a second dumping position, said bin being substantially within said cargo bed of said vehicle when said bin is in the first travel position, and said bin extending substantially beyond a rear end of said cargo bed of said vehicle when said bin is in said second dumping position; pneumatic piston and cylinder, said cylinder being connected to said bin adjacent said rear wall portion with said cylinder being substantially vertical when said bin is horizontal, said pneumatic piston and cylinder being pivotably connected to said bin at a first upper end of said pneumatic piston and cylinder and a second lower end of said pneumatic piston and cylinder being unconnected; compressed air means for selectively actuating said pneumatic piston and cylinder to raise said bin at said rear wall portion when said bin is in said second dumping position; a plurality of wheels mounted on the underside of said bin to facilitate said selective movement of the bin between the first travel position and the second dumping position.

Claim 26

The apparatus of claim 20 further comprising means for maintaining said second lower end of said pneumatic piston and cylinder in engagement with said cargo bed upon actuation of said pneumatic piston and cylinder.

Claim 27

The apparatus of claim 21 wherein said means for maintaining comprises a pad provided at said second lower end of said pneumatic piston and cylinder which frictionally engages said cargo bed upon actuation of said pneumatic piston and cylinder.

Claim 28

The apparatus of claim 21 wherein said means for maintaining comprises means for limiting the pivotal movement of said pneumatic piston and cylinder relative to said bin.

Claim 29

The apparatus of claim 23 wherein said means for limiting comprises a member which limits pivotal movement of the pneumatic piston and cylinder away from said bin beyond the relative orientation of said pneumatic piston and cylinder with said bin when said pneumatic piston and cylinder is in said substantially vertical orientation.

Claim 30

A pneumatically actuated dumping bin for a cargo bed of a vehicle, comprising: a bin comprising a floor portion, a left side wall portion, a right side wall portion and a rear wall portion, said bin being adapted to be received within the cargo bed of the vehicle for selective movement while horizontal between a first travel position and a second dumping position, said bin being substantially within said cargo bed of said vehicle when said bin is in the first travel position, and said bin extending substantially beyond a rear end of said cargo bed of said vehicle when said bin is in said second dumping position; a pneumatic piston and cylinder, said cylinder being connected to said bin adjacent said rear wall portion with said cylinder being substantially vertical when said bin is horizontal; compressed air means for selectively actuating said pneumatic piston and cylinder to raise said bin at said rear wall portion when said bin is in said second dumping position; a plurality of wheels mounted on the underside of said bin to facilitate said selective movement of the bin between the first travel position and the second dumping position; said rear wall portion of said bin including a recessed portion with said pneumatic piston and cylinder being received within said recess with said pneumatic piston and cylinder being pivotably connected to said bin at an upper portion of said recess, said pneumatic piston and cylinder being carried by said bin in said substantially vertical orientation while said bin is moved between said first travel position and said second dumping position; said pneumatic piston and cylinder being pivotably connected to said bin at a first upper end of said pneumatic piston and cylinder and a second lower end of said pneumatic piston and cylinder being unconnected.

Claim 31

A pneumatically actuated dumping bin for a cargo bed of a vehicle, comprising: a bin comprising a floor portion, a left side wall portion, a right side wall portion and a rear wall portion, said bin being adapted to be received within the cargo bed of the vehicle for selective movement while horizontal between a first travel position and a second dumping position, said bin being substantially within said cargo bed of said vehicle when said bin is in the first travel position, and said bin extending substantially beyond a rear end of said cargo bed of said vehicle when said bin is in said second dumping position; a pneumatic piston and cylinder, said cylinder being connected to said bin adjacent said rear wall portion with said cylinder being substantially vertical when said bin is horizontal; compressed air means for selectively actuating said pneumatic piston and cylinder to raise said bin at said rear wall portion when said bin is in said second dumping position; a plurality of wheels mounted on the underside of said bin to facilitate said selective movement of the bin between the first travel position and the second dumping position; said rear wall portion of said bin including a recessed portion with said pneumatic piston and cylinder being received within said recess with said pneumatic piston and cylinder being pivotably connected to said bin at an upper portion of said recess, said pneumatic piston and cylinder being carried by said bin in said substantially vertical orientation while said bin is moved between said first travel position and said second dumping position; said pneumatic piston and cylinder being pivotably connected to said bin at a first upper end of said pneumatic piston and cylinder and a second lower end of said pneumatic piston and cylinder being unconnected.

Claim 32

A pneumatically actuated dumping bin for a cargo bed of a vehicle, comprising: a bin comprising a floor portion, a left side wall portion, a right side wall portion and a rear wall portion, said bin being adapted to be received within the cargo bed of the vehicle for selective movement while horizontal between a first travel position and a second dumping position, said bin being substantially within said cargo bed of said vehicle when said bin is in the first travel position, and said bin extending substantially beyond a rear end of said cargo bed of said vehicle when said bin is in said second dumping position; a pneumatic piston and cylinder, said cylinder being connected to said bin adjacent said rear wall portion with said cylinder being substantially vertical when said bin is horizontal; compressed air means for selectively actuating said pneumatic piston and cylinder to raise said bin at said rear wall portion when said bin is in said second dumping position; a plurality of wheels mounted on the underside of said bin to facilitate said selective movement of the bin between the first travel position and the second dumping position; said rear wall portion of said bin including a recessed portion with said pneumatic piston and cylinder being received within said recess with said pneumatic piston and cylinder being pivotably connected to said bin at an upper portion of said recess, said pneumatic piston and cylinder being carried by said bin in said substantial vertical orientation while said bin is moved between said first travel position and said second dumping position; said pneumatic piston and cylinder being pivotably connected to said bin at a first upper end of said pneumatic piston and cylinder and a second lower end of said pneumatic piston and cylinder being unconnected other than when said bin is in said second dumping position.

Claim 33

A pneumatically actuated dumping bin for a cargo bed of a vehicle, comprising: a bin comprising a floor portion, a left side wall portion, a right side wall portion and a rear wall portion, said bin being adapted to be received within the cargo bed of the vehicle for selective movement while horizontal between a first travel position and a second dumping position, said bin being substantially within said cargo bed of said vehicle when said bin is in the first travel position, and said bin extending substantially beyond a rear end of said cargo bed of said vehicle when said bin is in said second dumping position; a pneumatic piston and cylinder, said cylinder being connected to said bin adjacent said rear wall portion with said cylinder being substantially vertical when said bin is horizontal; compressed air means for selectively actuating said pneumatic piston and cylinder to raise said bin at said rear wall portion when said bin is in said second dumping position; a plurality of wheels mounted on the underside of said bin to facilitate said selective movement of the bin between the first travel position and the second dumping position; said rear wall portion of said bin including a recessed portion with said pneumatic piston and cylinder being received within said recess with said pneumatic piston and cylinder being pivotably connected to said bin at an upper portion of said recess, said pneumatic piston and cylinder being carried by said bin in said substantial vertical orientation while said bin is moved between said first travel position and said second dumping position; said pneumatic piston and cylinder being pivotably connected to said bin at a first upper end of said pneumatic piston and cylinder and a second lower end of said pneumatic piston and cylinder being unconnected other than when said bin is in said second dumping position.

Claim 34

A bin having a removable gate member, comprising: a floor portion, a left side wall portion, a right side wall portion, a front wall portion and a rear wall portion, said front wall portion including a gate member selectively removable from said bin with said gate member being pivotably mounted on said side wall portions of said bin at an upper end of said gate member, and including left and right pin members which extend longitudinally from the upper end of said gate member, said left pin member extending beyond the left edge of the gate member and said right pin member exending beyond the right edge of the gate member, said pin members being fixedly mounted on the gate member, said left and right pin members being rotatably received within said left and right sidewall portions of said bin, said gate member being recessed along a portion of one of said left and right edges at one of said pin members whereby said gate member may be urged first toward one of said side wall portions and then toward the other of said side wall portions to disengage said pin members from said sidewall portions of said bin.

Claim 35

A bin having a removable gate member, comprising: a floor portion, a left side wall portion, a right side wall portion, a front wall portion and a rear wall portion, said front wall portion including a gate member selectively removable from said bin with said gate member being pivotably mounted on said side wall portions of said bin at an upper end of said gate member, and including left and right pin members which extend longitudinally from the upper end of said gate member, said left pin member extending beyond the left edge of the gate member and said right pin member exending beyond the right edge of the gate member, said pin members being fixedly mounted on the gate member, said left and right pin members being rotatably received within said left and right sidewall portions of said bin, said gate member being recessed along a portion of one of said left and right edges at one of said pin members whereby said gate member may be urged first toward one of said side wall portions and then toward the other of said side wall portions to disengage said pin members from said sidewall portions of said bin.