Combined rock puller and land leveller

• US 6,000,476 A
• Filed: 04/17/1997
• Issued: 12/14/1999
• Est. Priority Date: 04/16/1997
• Status: Expired due to Fees

• Current Assignee: Ronald A. Carson
• Original Assignee: Ronald A. Carson
• Inventors: Gall, Brian R.
• Primary Examiner(s): Novosad, Christopher J.
• Application Number:
  US08/837,384
• Time in Patent Office: 971 Days
• Field of Search: 172/200, 172/199, 172/196, 172/140, 172/138, 172/795, 172/789, 172/783, 172/785, 172/779, 172/407, 172/423, 172/458, 172/468, 172/664, 172/668, 172/684.5
• US Class Current: 172/196
• CPC Class Codes: A01B 31/00 Drags graders for field cultivators graders in general E02F
• CPC Class Codes: A01B 49/02 with two or more soil-working tools of different kind

Abstract

The present invention provides a combined rock puller and land leveler implement for alternatively pulling rocks from the ground or leveling the ground, and for pulling rocks from the ground and leveling the ground in one pass of the implement. The combined rock puller and land leveler comprises a frame having three individually articulated sections, a hitch attached to the front section, a rock pulling hook mounted on the front section behind the hitch, a land leveling blade mounted on the second section and ground wheels on a third section, and hydraulic cylinders for repositioning the frame sections into a plurality of positions.

Claims

1. A ground working implement comprising;

an articulated frame having;

a first frame section fixed at a front end to a hitch for attachment to a towing vehicle;

a second frame section pivotally connected at a front end to a rear end of the first frame section for pivotal movement about a first horizontal axis transverse to the direction of travel thereby allowing the first and second frame sections to hinge relative to one another about said first axis;

and a wheel support frame section carrying ground wheels at a rear end and pivotally connected at a front end to a rear end of the second frame section for pivotal movement about a second horizontal axis transverse to the direction of travel thereby allowing the second frame section and the wheel support frame section to hinge relative to one another about said second axis;

a first actuating hydraulic cylinder for actuating pivotal movement of the first frame section relative to the second frame section;

a second actuating hydraulic cylinder for actuating pivotal movement of the second frame section relative to the wheel support frame section;

a rock pulling hook fixed to the first frame section of the articulated frame and extending downwardly therefrom for engagement with the ground;

and a land levelling blade fixed to the second frame section of the articulated frame and extending transversely thereacross for engaging the ground behind the hook.

2. The implement according to claim 1 wherein the first frame section comprises a single longitudinal main beam.

3. The implement according to claim 1 wherein the wheel support frame section comprises a pair of parallel rearwardly extending wheel support arms attached to and extending rearwardly from the land levelling blade and a cross member interconnecting the arms for common pivotal movement.

4. The implement according to claim 1 wherein the rock pulling hook consists of a single hook.

5. The implement according to claim 1 wherein the rock pulling hook is located centrally of the land levelling blade.