Blade attachment device

• US 7,540,103 B2
• Filed: 05/11/2007
• Issued: 06/02/2009
• Est. Priority Date: 05/11/2007
• Status: Expired due to Fees

• Current Assignee: James O. Broten
• Original Assignee: James O. Broten
• Inventors: Broten, James O.
• Primary Examiner(s): Beach; Thomas A
• Application Number:
  US11/801,800
• Publication Number:
  US 20080276499A1
• Time in Patent Office: 753 Days
• Field of Search: 372/63, 372/66, 372/76, 372/73, 372/74, 372/79, 372/81, 372/31, 172/276, 172/815, 172/445.2, 172/272
• US Class Current: 37/276
• CPC Class Codes: E01H 5/06 dislodging essentially by non-driven elements, e.g. scraper blades , snow-plough blades, scoop blades

Abstract

The invention is related to an attachment to a front end loader. The invention comprises a dual blades having a rear frame which is fixed to the movable arm means at the front of the front end\ loader. The rear frame has a pivotal left arm and a pivotal right arm with a left blade mounting frame pivotal mounted to the forward end of the left arm and a left blade spring mounted to the forward end of the left mounting frame. A right blade mounting frame is pivotally mounted to the forward end of the right arm and a right blade spring mounted to the forward end of the right blade mounting frame. A pair of hydraulic cylinders with one mounted between the left arm and the rear frame and with the other mounted between the left arm and the left blade mounting means. A pair of hydraulic cylinders with one mounted between the right arm and the rear frame and the other mounted between the right arm and the right blade mounted means whereby the hydraulic cylinders may actuated to move the right and left blades and their associated right and left mounting blades to various angles independently of one another.

Claims

1. A trench blade apparatus for attachment to a front end loader comprising a main rear frame for attachment at the front of said loader,

a left blade, a left forward frame in front of said main frame and behind said left blade, spring means connecting said left forward frame to said left blade, a left arm pivotally connecting said main frame to said left forward frame, a first left piston and cylinder pivotally connected at its rearward end to said left arm and its forward end pivotally connected to said left forward frame, a second left piston and cylinder having its one end pivotally connected to said rear main frame and its other end pivotally connected to said left arm;

a right blade, a right forward frame in front of said main frame and behind said right blade, spring means connecting said right forward frame to said right blade, a right arm pivotally connecting said main frame to said right forward frame, a first right piston and cylinder pivotally connected at its rearward end to said right arm and its forward end and pivotally connected at its forward end to said right forward frame, a second right piston and cylinder having its one end pivotally connected to said main frame and its other end pivotally connected to said right arm;

whereby the left and right forward frames may pivot the right and left blades to various angles on the left and right arms by the first left and right pistons and cylinders and the second left and right piston and cylinders may pivot the left and right arms and thereby the left and right blades to various additional angles and alignments.

2. A trench blade apparatus according to claim 1 wherein said left and right blades each have a pair of leveling discs at the bottoms of their left and right ends.