Post hole digger

• US 4,986,373 A
• Filed: 10/16/1989
• Issued: 01/22/1991
• Est. Priority Date: 10/16/1989
• Status: Expired due to Fees

• Current Assignee: Les Industries Lta/Lta Industries Incorporated 100 BOUL Alexis Nihon
• Original Assignee: Les Industries LTA Incorporated /LTA Industries Incorporated
• Inventors: Beaudoin, Robert, Charland, Guy
• Primary Examiner(s): Dang, Hoang C.
• Application Number:
  US07/422,080
• Time in Patent Office: 463 Days
• Field of Search: 175/424, 175/21, 175/20, 175/18, 175/67, 175/324, 175/391, 175/392, 175/393, 175/421, 175/397, 175/327, 405/248, 405/253, 405/254, 52/154, 52/155
• US Class Current: 175/21
• CPC Class Codes: E21B 10/26 Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers percussion drill bits with leading portion E21B10/40
• CPC Class Codes: E21B 10/602 the bit being a rotary drag type bit with blades
• CPC Class Codes: E21B 11/005 Hand operated drilling tools

Abstract

A post hole digger and a method of implanting a post in the ground. A boring implement having a piercing free end and also having an attachment flange is secured to an end portion of a post to be implanted in the ground. The implement has a tapered body section with a projecting serrated edge on opposed sides thereof. The serrated edges extend angularly from a common longitudinal plane and in opposed angular directions. A pipe section is secured to the implement and a garden hose is connected thereto whereby to direct a stream of water in the direction of said piercing free end whereby axial rotation and counter-rotation of said post causes the implement to bore into the ground to cause said post to descend in a bore hole. After the post is implanted the garden hose is disconnected from the pipe section by applying a pulling force on the hose.

Claims

1. A post hole digger comprising a boring implement having a piercing free end and an attachment means at an opposed end for securement to a bottom end of a post to be secured in the ground, said implement having a tapered body section with a projecting serrated edge on opposed sides thereof, said serrated edges extending angularly from a common longitudinal plane and in opposed planar angular directions, there being a pair of said serrated edges in each said opposed sides, each edge of said pair extending in diverging angular planes, and conduit means secured to said implement to direct a liquid flow in the direction of said piercing free end.

2. A post hole digger as claimed in claim 1 wherein said conduit means is a pipe section secured between said serrated edges of one of said pairs of serrated edges.

3. A post hole digger as claimed in claim 2 wherein said body is a flat plate having a V-shape taper defining angulated side edges and an apex, said apex constituting said piercing free end, said pair of serrated edges extending along at least a portion of a respective one of said angulated side edges.

4. A post hole digger as claimed in claim 2 wherein said body is formed by two V-shaped metal plates each having inwardly turned edges portions extending on a common side of said plates, said metal plates having a right angle flange formed integral therewith in a top end portion thereof, the opposed end portion terminating in a pointed end portion constituting said piercing free end, said plates being welded together back-to-back with said flanges and turned edge portions extending in opposed directions, said pipe section being welded between two of said opposed turned edge portions, said turned edge portions extending beyond the diameter of a post secured to said flanges in a top end portion thereof.

5. A post hole digger as claimed in claim 4 wherein said pointed end portion is a V-shaped end portion having straight angulated side edges and a pointed apex, said pipe section having a bottom open end terminating substantially above said end portion and in the direction thereof and a top open end extending above said right angle flanges.

6. A post hole digger as claimed in claim 1 wherein said conduit means is a pipe section secured between said serrated edges of one of said pairs of serrated edges, a conduit connected at one end to a top open end of said pipe section by a pressure fit adapter which is disconnectible by a predetermined movement of said conduit.

7. A post hole digger as claimed in claim 6 wherein said conduit has a hose connector secured to a top end thereof for connection to a garden hose.

8. A post hole digger as claimed in claim 1 wherein there is further provided handle means removably connectible to said post for imparting axial rotation and counter-rotation movement to said post to cause said implement to bore a hole under said post.

9. A post hole digger as claimed in claim 8 wherein said handle means comprises a pair of handle bars having post engagement means for engagement with a post to be implanted in the ground, and attachment means for securing said handle means on opposite sides of said post.