Trench paver attachment

• US 8,449,217 B2
• Filed: 10/31/2011
• Issued: 05/28/2013
• Est. Priority Date: 10/31/2011
• Status: Expired due to Fees

• Current Assignee: Gregory Skora, Martin Dipizio
• Original Assignee: Gregory Skora, Martin Dipizio
• Inventors: DiPizio, Martin, Skora, Gregory
• Primary Examiner(s): Addie, Raymond W
• Application Number:
  US13/286,142
• Publication Number:
  US 20130108365A1
• Time in Patent Office: 575 Days
• Field of Search: 404/83, 404/92, 405/179
• US Class Current: 404/83
• 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 19/42 Machines for imparting a smooth finish to freshly-laid paving courses other than by rolling, tamping or vibrating for distributing only E01C19/12; hand-actuated smoothing tools E01C19/44
• CPC Class Codes: E02F 3/7622 Scraper equipment with the scraper blade mounted on a frame to be hitched to the tractor by bars, arms, chains or the like, the frame having no ground supporting means of its own, e.g. drag scrapers
• CPC Class Codes: E02F 3/8155 provided with movable parts, e.g. cutting discs, vibrating teeth or the like
• CPC Class Codes: E02F 3/8157 Shock absorbers; Supports, e.g. skids, rollers; Devices for compensating wear-and-tear, or the like
• CPC Class Codes: E02F 5/12 with equipment for back-filling trenches or ditches

Abstract

A trench paver attachment which can be used to backfill a trench to varying grade heights, the attachment being designed primarily for use on paved roads. The attachment in one configuration is able to backfill a trench with crushed rock and cement or the like to a suitable height corresponding to the base of the adjacent pavement, and in another configuration it is able to apply base, binder and top in whatever lifts are called for. The attachment may be adjusted to allow for the paving of any trench from an 18″ width up to a 96″ width, which widths may be varied by the operator during the course of paving the trench.

Claims

1. A trench paver attachment for paving variable width trenches with asphalt, the attachment being connecting to the mounting plate assembly of a standard skid-steer loader and allowing paving of any trench from 18″

to 96″

;

the attachment comprising;

a support assembly securable to mounting plate assembly carried by a skid-steer loader;

right and left primary blades pivotally interconnected to the support assembly;

right and left extensible and retractable hydraulic cylinders extending between spaced apart portions of the support assembly and the right and left primary blades respectively, the right and left cylinders being capable of moving the primary blades between a first position where they form an obtuse angle with each other and a second position where they form an acute angle with each other;

means to support the primary blades so that the bottom of the primary blades are parallel to the surface of the adjacent roadway;

right and left material scraper blades carried by the right and left primary blades, respectively, the width of the right and left material scraped blades being no more than the width of the trench to be paved; and

means to adjustably mount the scraper blades on the primary blades so that the bottom edge of the scraper blades is either slightly above the surface of the adjacent roadway when the attachment is being used for paving the top layer of asphalt, or below the surface of the adjacent roadway and within the trench when the attachment is being used paving the base or binder layers of asphalt, or when being used for spreading backfill material within the trench.

2. The trench paver attachment as set forth in claim 1 wherein the cylinders are controlled by solenoid operated directional control valves (64), and various relief valves (66) are provided so that when a blade hits an obstruction, the blade may yield without damaging the blade.

4. The trench paver attachment as set forth in claim 1, wherein the scraper blades having a width substantially less than the primary blades.

3. A trench paver attachment for paving variable width trenches with asphalt, the attachment being connecting to the mounting plate assembly of a standard skid-steer loader and allowing paving of any trench from 18″

to 96″

;

the attachment comprising;

a support assembly securable to mounting plate assembly carried by a skid-steer loader;

right and left primary blades pivotally interconnected to the support assembly;

right and left extensible and retractable hydraulic cylinders extending between spaced apart portions of the support assembly and the right and left primary blades respectively, the right and left cylinders being capable of moving the primary blades between a first position where they form an obtuse angle with each other and a second position where they form an acute angle with each other;

means to support the primary blades so that the bottom of the primary blades are parallel to the surface of the adjacent roadway;

right and left material scraper blades carried by the right and left primary blades, respectively; and

means to adjustably mount the scraper blades on the primary blades so that the bottom edge of the scraper blades is either slightly above the surface of the adjacent roadway when the attachment is being used for paving the top layer of asphalt, or below the surface of the adjacent roadway when the attachment is being used paving the base or binder layers of asphalt, or when being used for spreading backfill material within the trench; and

wherein the material engaging plates are provided at their outer ends with a round bar which slides along the side of the cut pavement, and, in the event that there is something which would interfere with the sliding movement, the round bar will cause the blade to move to the center of the trench an inch or so, thus preventing the equipment from incurring damage.

5. A trench paver attachment for paving variable width trenches with asphalt, the attachment being connecting to the mounting plate assembly of a standard skid-steer loader and allowing paving of any trench from 18″

to 96″

;

the attachment comprising;

a support assembly securable to mounting plate assembly carried by a skid-steer loader;

right and left primary blades pivotally interconnected to the support assembly;

right and left extensible and retractable hydraulic cylinders extending between spaced apart portions of the support assembly and the right and left primary blades respectively, the right and left cylinders being capable of moving the primary blades between a first position where they form an obtuse angle with each other and a second position where they form an acute angle with each other;

means to support the primary blades so that the bottom of the primary blades are parallel to the surface of the adjacent roadway;

right and left material scraper blades carried by the right and left primary blades, respectively; and

means to adjustably mount the scraper blades on the primary blades so that the bottom edge of the scraper blades is either slightly above the surface of the adjacent roadway when the attachment is being used for paving the top layer of asphalt, or below the surface of the adjacent roadway when the attachment is being used paving the base or binder layers of asphalt, or when being used for spreading backfill material within the trench; and

wherein the support assembly includes a transverse box beam, a pair of forwardly extending box beams which are in a V-shaped configuration, a triangular plate below the forwardly converging box beams and a centrally located pivot assembly to which the primary blades are pivotally secured.