Screeding apparatus

• US 6,203,244 B1
• Filed: 01/15/1999
• Issued: 03/20/2001
• Est. Priority Date: 01/15/1998
• Status: Expired due to Fees

• Current Assignee: Van-Boh Systems, Inc.
• Original Assignee: Van-Boh Systems, Inc.
• Inventors: Van Ornum, Leslie
• Primary Examiner(s): Will, Thomas B.
• Assistant Examiner(s): FLORIO, KRISTINE
• Application Number:
  US09/232,088
• Time in Patent Office: 795 Days
• Field of Search: 404/101, 404/102, 404/103, 404/108, 404/110, 404/118, 404/122, 404/124, 404/128
• US Class Current: 404/110
• CPC Class Codes: E01C 19/15 for laying-down uncoated stone or similar materials, or for striking-off or spreading same without compacting, e.g. for crushed rock base courses, sand cushions for paving E01C19/466 , E01C19/52 take precedence; distributing E01C19/20; laying down and rolling E01C19/482
• CPC Class Codes: E01C 19/185 for both depositing and spreading-out or striking-off the deposited mixture laying-down the materials and consolidating them, or finishing the surface, E01C19/48
• CPC Class Codes: E01C 19/187 solely for spreading-out or striking-off deposited mixtures, e.g. spread-out screws, strike-off boards
• CPC Class Codes: E01C 19/29 Rolling apparatus adapted to apply a rolling pressure less than its weight, e.g. roller finishers travelling on formrail combined with spread-out, strike-off or smoothing means; Rolling elements with controlled penetration or a controlled path of movement in a vertical plane, e.g. controlled by the formrails, by guides ensuring a desired configuration of the rolled surface
• CPC Class Codes: E02F 9/003 Devices for transporting the soil-shifting machines or excavators, e.g. by pushing them or by hitching them to a tractor

Abstract

A screeding attachment for an industrial utility vehicle. The screed and vehicle in combination provide a low cost, maneuverable and versatile screeding unit for screeding small and medium size pavements such as driveways, sidewalks, slabs and surfaces inside buildings and the like. A see-through frame supported on castered wheels and a see-through distribution and deposition system for metering and depositing paving materials in the path of a grooved cylindrical screed provide an apparatus for continuously laying a screeded slab under the direct observation of an operator in the industrial utility vehicle.

Claims

1. A screeding attachment for an industrial utility vehicle comprising:

a) a substantially rectangular frame having a longitudinal axis, a vehicle end member and a screed end member positioned transverse to the axis, a first side frame member and a second side frame member positioned parallel to said axis with one side frame member on each side of the axis, the first and second side frame members connecting to the vehicle end member and the screed end member, the screed end member positioned rearwardly from the vehicle end member;

b) a coupling means secured to the frame on the vehicle end member, said coupling means being engageable with and disengageable from a bucket tilt mechanism on the industrial utility vehicle;

c) two castered ground engaging wheel assemblies, one wheel assembly depending from the first side frame member, the other wheel assembly depending from the second side frame member, the wheel assemblies being widely spaced apart at positions on each side of the longitudinal axis;

d) a screed moveably secured to the screed end member and positioned transverse to the longitudinal axis;

e) wherein the frame is configured so as to provide an unobstructed view of the screed from the industrial utility vehicle with which the screeding attachment is engaged; and

f) a paving material distribution and deposition means supportable by the frame of the screeding attachment, the paving material distribution and deposition means comprising;

i) a hopper for receiving paving material from a supply of paving material, the hopper having a bottom opening for discharging paving material;

ii) a belt conveyor passing under the bottom opening and positioned over the frame;

iii) an adjustable gate secured to said hopper and positioned so as to regulate and meter the flow of paving material from the hopper onto the conveyor; and

iv) a deflector beam positioned diagonally over said conveyor for the purpose of deflecting paving material off of the conveyor uniformly along the length of the conveyor.

2. A screeding attachment for an industrial utility vehicle comprising:

a) a substantially rectangular frame having a longitudinal axis, a vehicle end member and a screed end member positioned transverse to the axis, a first side frame member and a second side frame member positioned parallel to said axis with one side frame member on each side of the axis, the first and second side frame members connecting to the vehicle end member and the screed end member, the screed end member positioned rearwardly from the vehicle end member;

b) a coupling means secured to the frame on the vehicle end member, said coupling means being engageable with and disengageable from a bucket tilt mechanism of the industrial utility vehicle;

c) two castered ground engaging wheel assemblies, one wheel assembly depending from the first side frame member, the other wheel assembly depending from the second side frame member, the wheel assemblies being widely spaced apart at positions on each side of the longitudinal axis;

d) a screed moveably secured to the screed end member and positioned transverse to the longitudinal axis;

e) wherein the frame is configured so as to provide an unobstructed view of the screed from the industrial utility vehicle with which the screeding attachment is engaged;

f) a paving material distribution and deposition means supportable by the frame of the screeding attachment, the paving material distribution and deposition means comprising;

i) a hopper for receiving paving material from a supply of paving material, the hopper having a bottom opening for discharging paving material;

ii) a belt conveyor passing under the bottom opening and positioned over the frame;

iii) an adjustable gate secured to said hopper and positioned so as to regulate and meter the flow of paving material from the hopper onto the conveyor; and

iv) a deflector beam positioned diagonally over said conveyor for the purpose of deflecting paving material off of the conveyor uniformly along the length of the conveyor; and

g) wherein the conveyor is positioned transverse to the longitudinal axis of the frame and above a line of sight from the utility vehicle to the screed, and the speed of the conveyor and the flow of the paving material onto the conveyor is adjustable so that the paving material is deflected off of the conveyor in globules and clumps.

3. A screeding attachment for an industrial utility vehicle comprising:

a) a substantially rectangular frame having a longitudinal axis, a vehicle end member and a screed end member positioned transverse to the axis, a first side frame member and a second side frame member positioned parallel to said axis with one side frame member on each side of the axis, the first and second side frame members connecting to the vehicle end member and the screed end member, the screed end member positioned rearwardly from the vehicle end member;

b) a coupling means secured to the frame on the vehicle end member, said coupling means being engageable with and disengageable from a bucket tilt mechanism of the industrial utility vehicle;

c) two castered ground engaging wheel assemblies, one wheel assembly depending from the first side frame member, the other wheel assembly depending from the second side frame member, the wheel assemblies being widely spaced apart at positions on each side of the longitudinal axis;

d) a cylindrical screed having a cylindrical surface and longitudinal v-shaped grooves formed in the cylindrical surface, the cylindrical screed adjustably secured to the screed end member and positioned transverse to the longitudinal axis;

e) a paving material distribution and deposition means supported by the frame of the screeding attachment the paving material distribution and deposition means comprising;

i) a hopper for receiving paving material from a supply of paving material, the hopper having a bottom opening for discharging paving material;

ii) a belt conveyor passing under the bottom opening and positioned over the frame;

iii) an adjustable gate secured to said hopper and positioned so as to regulate and meter the flow of paving material from the hopper onto the conveyor; and

iv) a deflector beam positioned diagonally over said conveyor for the purpose of deflecting paving material off of the conveyor uniformly along the length of the conveyor; and

f) wherein the frame is configured so as to provide an unobstructed view of the screed from the industrial utility vehicle with which the screeding attachment is engaged.

4. A screeding apparatus comprising:

a) an industrial utility vehicle having front wheels, rear wheels, bucket arms and a bucket tilt mechanism attached to the bucket arms where a bucket is normally mounted;

b) a screeding attachment having a substantially rectangular frame with a longitudinal axis, a vehicle end member and a screed end member positioned transverse to the axis a first side frame member and a second side frame member positioned parallel to said axis with one side frame member on each side of the axis, the first and second side frame members connecting to the vehicle end member and the screed end member, the screed end member positioned rearwardly from the vehicle end member;

c) a coupling means secured to the frame on the vehicle end member, said coupling means being engagable with and disengagable from the bucket tilt mechanism on the industrial utility vehicle;

d) two castered ground engaging wheel assemblies, one wheel assembly depending from the first side frame member, the other wheel assembly depending from the second side frame member, the wheel assemblies being widely spaced apart at positions on each side of the longitudinal axis;

e) a screed moveably secured to the screed end member and positioned transverse to the longitudinal axis; and

f) a paving material distribution and deposition means supportable by the frame of the screeding attachment, the paving material distribution and deposition means comprising;

i) a hopper for receiving paving material from a supply of paving material, the hopper having a bottom opening for discharging paving material;

ii) a belt conveyor passing under the bottom opening and positioned over the frame;

iii) an adjustable gate secured to said hopper and positioned so as to regulate and meter the flow of paving material from the hopper onto the conveyor; and

iv) a deflector beam positioned diagonally over said conveyor for the purpose of deflecting paving material off of the conveyor uniformly along the length of the conveyor.

5. A screeding apparatus comprising:

a) an industrial utility vehicle having front wheels, rear wheels, bucket arms and a bucket tilt mechanism attached to the bucket arms where a bucket is normally mounted;

b) a screeding attachment having a substantially rectangular frame with a longitudinal axis, a vehicle end member and a screed end member positioned transverse to the axis, a first side frame member and a second side frame member positioned parallel to said axis with one side frame member on each side of the axis, the first and second side frame members connecting to the vehicle end member and the screed end member, the screed end member positioned rearwardly from the vehicle end member;

c) a coupling means secured to the frame on the vehicle end member, said coupling means being engagable with and disengagable from the bucket tilt mechanism on the industrial utility vehicle;

d) two castered ground engaging wheel assemblies, one wheel assembly depending from the first side frame member, the other wheel assembly depending from the second side frame member, the wheel assemblies being widely spaced apart at positions on each side of the longitudinal axis;

e) a screed moveably secured to the screed end member and positioned transverse to the longitudinal axis;

f) a paving material distribution and deposition means supportable by the frame of the screeding attachment, the paving material distribution and deposition means comprising;

i) a hopper for receiving paving material from a supply of paving material, the hopper having a bottom opening for discharging paving material;

ii) a belt conveyor passing under the bottom opening and positioned over the frame;

iii) an adjustable gate secured to said hopper and positioned so as to regulate and meter the flow of paving material from the hopper onto the conveyor; and

iv) a deflector beam positioned diagonally over said conveyor for the purpose of deflecting paving material off of the conveyor uniformly along the length of the conveyor; and

g) wherein the conveyor is positioned transverse to the longitudinal axis of the frame and above a line of sight from the utility vehicle to the screed, and the speed of the conveyor and the flow of the paving material onto the conveyor is adjustable so that the paving material is deflected off of the conveyor in globules and clumps.