ROAD CONSTRUCTION METHODS AND APPARATUS

• US 3,423,859 A
• Filed: 04/07/1965
• Issued: 01/28/1969
• Est. Priority Date: 04/07/1965
• Status: Expired due to Term

• Current Assignee: Adolph R. Petersik, George W. Swisher Jr, Gordon L. Spivey
• Original Assignee: Adolph R. Petersik, George W. Swisher Jr, Gordon L. Spivey
• Inventors: Swisher, George W. Jr., Spivey, Gordon L., Petersik, Adolph R.
• Application Number:
  US04/446,239
• Time in Patent Office: 1,392 Days
• US Class Current: 37/382
• CPC Class Codes: B62D 55/084 Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units B62D55/07 takes precedence
• CPC Class Codes: B62D 55/116 Attitude or position control of chassis by action on suspension, e.g. to compensate for a slope
• CPC Class Codes: E02F 3/783 having a horizontal axis of rotation
• CPC Class Codes: E02F 3/841 Devices for controlling and guiding the whole machine, e.g. by feeler elements and reference lines placed exteriorly of the machine construction of roads E01C19/008
• 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
• CPC Class Codes: E02F 9/02 Travelling-gear, e.g. associated with slewing gears drives therefor E02F9/20; for motor vehicles B60B, B60G; undercarriages for locomotives or railroad cars B61F; track-laying vehicles B62D; for cranes B66C23/18
• CPC Class Codes: E02F 9/2045 Guiding machines along a predetermined path for graders E02F3/841; machines for construction of roads E01C19/004
• CPC Class Codes: E02F 9/22 Hydraulic or pneumatic drives for dipper or bucket arm position control E02F3/43, for blade position control for graders E02F3/844; for turntables E02F9/121; for fork-lift trucks B66F9/22

Claims