Road clearing and material spreading apparatus

• US 3,160,964 A
• Filed: 07/27/1962
• Issued: 12/15/1964
• Est. Priority Date: 07/27/1962
• Status: Expired due to Term

• Current Assignee: Ferrell E. Crawford, James H. Lanier, Paul E. Boyer, Walter O. Mansfield
• Original Assignee: Ferrell E. Crawford, James H. Lanier, Paul E. Boyer, Walter O. Mansfield
• Inventors: Boyer, Paul E., Mansfield, Walter O., Crawford, Ferrell E., Lanier, James H.
• Application Number:
  US04/212,932
• Time in Patent Office: 872 Days
• US Class Current: 37/241
• CPC Class Codes: E01C 19/203 Centrifugal spreaders with substantially vertical axis
• CPC Class Codes: E01H 5/06 dislodging essentially by non-driven elements, e.g. scraper blades , snow-plough blades, scoop blades

Claims

1. IN COMBINATION WITH A VEHICLE HAVING AN ENGINE, AN OPERATOR'"'"''"'"'S STATION, AN HYDRAULIC POWER SYSTEM INCLUDING A FLUID RESERVOIR, AND A TILTABLE MATERIAL STORAGE SECTION, MATERIAL SPREADING APPARATUS COMPRISING:

(A) A ROTATABLE DISK, (B) A FEED SCREW FOR FEEDING PARTICULATE MATERIAL FROM A STORAGE AREA ONTO SAID DISK, (C) A FIRST HYDRAULIC MOTOR CONNECTED IN SAID HYDRAULIC SYSTEM FOR DRIVING SAID FEED SCREW, (D) A SECOND HYDRAULIC MOTOR CONNECTED IN SAID HYDRAULIC SYSTEM FOR DRIVING SAID DISK, (E) A THIRD HYDRAULIC MOTOR CONNECTED IN SAID HYDRAULIC SYSTEM FOR TILTING SAID STORAGE SECTION OF THE VEHICLE, (F) AN HYDRAULIC PUMP IN SAID HYDRAULIC SYSTEM ADAPTED TO BE DRIVEN BY SAID ENGINE, (G) A FIRST FLUID FLOW REGULATING VALVE CONNECTED BETWEEN THE OUTLET SIDE OF SAID PUMP AND SAID FIRST MOTOR, (H) A SECOND FLUID FLOW REGULATING VALVE CONNECTED BETWEEN THE OUTLET SIDE OF SAID PUMP AND SAID SECOND MOTOR, (I) A THIRD FLUID FLOW REGULATING VALVE CONNECTED BETWEEN THE OUTLET SIDE OF SAID PUMP AND THE INLET OF A THREE-WAY VALVE HAVING A FIRST OUTLET CONNECTED TO SAID THIRD MOTOR, AND A SECOND OUTLET CONNECTED TO SAID RESERVOIR, (J) SAID THREE-WAY VALVE HAVING AN OPERATING HANDLE AND BEING OPERABLE TO DIRECT FLUID INTO SAID THIRD MOTOR, OUT OF SAID MOTOR, AND FOR PREVENTING FLOW INTO OR OUT OF SAID THIRD MOTOR.