Apparatus and method for a material control device with a sliding door

{
  "publication_number": "US10619402B2",
  "country": "US",
  "kind": "B2",
  "title": "Apparatus and method for a material control device with a sliding door",
  "abstract": "A material control device having a housing, a material discharge door that has a left end, a right end, and a central axis and is adapted to be moved between a closed position and an open position, and a means for moving the material discharge door between the closed position and the open position. The means for moving the material discharge door between the closed position and the open position slidingly moves the material discharge door between the closed position and the open position. A method for controlling material discharge including providing a material control device and moving the material discharge door between the closed position and the open position.",
  "claims": [
    "1. A material control device adapted for use on a paver having a front end, a back end, and an auger, said material control device comprising: (a) a housing; (b) a material discharge door, said material discharge door having a left end, a right end, and a central axis and being adapted to be moved between a closed position and an open position; (c) a means for moving the material discharge door between the closed position and the open position; wherein the means for moving the material discharge door between the closed position and the open position slidingly moves the material discharge door between the closed position and the open position; and wherein the material discharge door is disposed in the back end of the paver below the auger; and wherein the material discharge door is disposed in a substantially horizontal position.",
    "2. The material control device of claim 1 wherein the material discharge door slidingly moves between the closed position and the open position in a pair of channels.",
    "3. The material control device of claim 1 wherein the material discharge door automatically slidingly moves between the closed position and the open position based on a rotational speed of the auger.",
    "4. The material control device of claim 1 wherein the means for moving the material discharge door comprises an actuator.",
    "5. The material control device of claim 1 wherein the means for moving the material discharge door is pivotally connected to the material discharge door along the material discharge door central axis.",
    "6. The material control device of claim 1 further comprising a sensor adapted to determine a material discharge door position.",
    "7. The material control device of claim 1 further comprising a second material discharge door and a means for moving the second material discharge door between the closed position and the open position.",
    "8. The material control device of claim 7 wherein the material discharge door and the second material discharge door are adapted to be moved between the closed position and the open position independently of each other.",
    "9. The material control device of claim 1 wherein the means for moving the material discharge door comprises linkage.",
    "10. The material control device of claim 9 wherein the linkage is pivotally connected to the material discharge door along the material discharge door central axis.",
    "11. A material control device adapted for use on a paver having a front end, a back end, and an auger, said material control device comprising: (a) a housing; (b) an auger, said auger being disposed in the housing; (c) a first material discharge door, said first material discharge door having a first material discharge door left end, a first material discharge door right end, and a first material discharge door central axis and being adapted to be moved between a closed position and an open position; (d) a second material discharge door, said second material discharge door having a second material discharge door left end, a second material discharge door right end, and a second material discharge door central axis and being adapted to be moved between a closed position and an open position; (e) a means for moving the first material discharge door between the closed position and the open position; (f) a means for moving the second material discharge door between the closed position and the open position; wherein the means for moving the first material discharge door between the closed position and the open position slidingly moves the first material discharge door between the closed position and the open position; and wherein the means for moving the second material discharge door between the closed position and the open position slidingly moves the second material discharge door between the closed position and the open position; and wherein the material discharge door is disposed in the back end of the paver below the auger; and wherein the material discharge door is disposed in a substantially horizontal position.",
    "12. The material control device of claim 11 wherein the first material discharge door slidingly moves between the closed position and the open position in a first pair of channels and the second material discharge door slidingly moves between the closed position and the open position in a second pair of channels.",
    "13. The material control device of claim 11 wherein the first material discharge door automatically slidingly moves between the closed position and the open position and the second material discharge door automatically slidingly moves between the closed position and the open position.",
    "14. The material control device of claim 11 wherein the first material discharge door and the second material discharge door are adapted to be moved between the closed position and the open position independently of each other.",
    "15. The material control device of claim 11 wherein the means for moving the first material discharge door comprises a first actuator and the means for moving the second material discharge door comprises a second actuator.",
    "16. The material control device of claim 11 wherein the means for moving the first material discharge door is pivotally connected to the first material discharge door along the first material discharge door central axis and the means for moving the second material discharge door is pivotally connected to the second material discharge door along the second material discharge door central axis.",
    "17. The material control device of claim 11 further comprising a first sensor adapted to determine a first material discharge door position and a second sensor adapted to determine a second material discharge door position.",
    "18. The material control device of claim 11 wherein the means for moving the first material discharge door comprises a first linkage and the means for moving the second material discharge door comprises a second linkage.",
    "19. The material control device of claim 18 wherein the first linkage is pivotally connected to the first material discharge door along the first material discharge door central axis and the second linkage is pivotally connected to the second material discharge door along the second material discharge door central axis.",
    "20. A method for controlling material discharge, said method comprising: (a) providing a material control device adapted for use on a paver having a front end, a back end, and an auger, said material control device comprising: (i) a housing; (ii) a material discharge door, said material discharge door having a left end, a right end, and a central axis and being adapted to be moved between a closed position and an open position; (ii) a means for moving the material discharge door between the closed position and the open position; wherein the means for moving the material discharge door between the closed position and the open position slidingly moves the material discharge door between the closed position and the open position; and wherein the material discharge door is disposed in the back end of the paver below the auger; and wherein the material discharge door is disposed in a substantially horizontal position; (b) moving the material discharge door between the closed position and the open position."
  ],
  "description_excerpt": "The present invention relates generally to apparatuses and methods for material control devices, and particularly to apparatuses and methods for material control devices with material discharge doors.\n\nIt is known to use apparatuses and methods to control the discharge of material from a material control device. Conventional apparatuses and methods, however, suffer from one or more disadvantages. For example, conventional material control devices and methods use pivoting doors to control the discharge of material. As a result, the ground clearance of the material control device is undesirably reduced and the pivoting doors are undesirably susceptible to damage. Conventional material control apparatuses and methods also do not open and close the material discharge doors from the center of the door. As a result, the material discharge doors tend to undesirably bend, flex, or warp over time and the doors undesirably fail to fully close and smoothly move between the open and closed positions. Further, conventional material control devices and methods are manually operated. As a result, the operator is required to adjust the material discharge doors while also controlling other functions such as steering a paver and controlling the speed of the paver. The manually-operated material discharge doors are also undesirably susceptible to human error. Still further, conventional material control devices and methods do not automatically control, adjust, or meter the rate of discharge of material.",
  "cpc": [
    "E06B 3/46",
    "B65G 33/14",
    "E01C 19/48",
    "E02F 3/76",
    "E05Y 2400/322",
    "E05Y 2600/20",
    "E06B 3/509"
  ],
  "ipc": [
    "B65G 33/14",
    "E01C 19/02",
    "E02F 3/76",
    "E06B 3/46",
    "E06B 3/50"
  ],
  "assignees": [
    "Carlson Paving Products Inc"
  ],
  "inventors": [
    "Robert Bauer",
    "Kevin Comer",
    "Moustafa Sou"
  ],
  "filing_date": "2018-03-29",
  "publication_date": "2020-04-14",
  "grant_date": "2020-04-14",
  "priority_date": "2017-03-30",
  "application_number": "US-201815940239-A",
  "family_id": "63673098",
  "cited_by_count": 0,
  "citations": [
    "US5234128A",
    "US5387051A",
    "US5405214A",
    "US5460649A",
    "US5590976A",
    "US6007272A",
    "US6161986A",
    "US6345931B1",
    "US20040179895A1",
    "US20050058507A1",
    "US20100178107A1",
    "US10246833B2"
  ]
}