Removable utility ground post

Abstract

A support post structure comprising an elongated impact drive tube having a longitudinally extending bore open at a distal end of the tube, an elongated stake member having a guide section slidably mounted within the bore and further having a ground penetrating elongated head section extending longitudinally outward from the distal end of the drive tube, wherein the head section in cross-section has a channel configuration with a web base and parallel upstanding side walls, the head section has a driven lateral shoulder adapted for being downwardly impacted by the distal end of the tube on the down stroke of the tube, and wherein the head section is wedge shaped with the point of the wedge on the distal end of the web base and with the lateral driven shoulder on upper portions of the channel sides at a proximal end of the head section.

Claims

1. A utility support post structure comprising: an elongated impact drive tube having a longitudinally extending bore open at a distal drive end of said drive tube; an elongated stake member in a form of a U-shaped channel member having a guide section slidably mounted within said bore and further having a ground penetrating elongated head section extending longitudinally outward from said distal drive end of said drive tube, said head section and said guide section being a single piece and having a U-shaped channel configuration in cross-section with a common web base and common parallel side walls that extend outwardly from the web base such that an open U-shaped channel extends continuously along the head section and along the guide section, the head section having a proximal portion and a distal portion, wherein the side walls of the proximal portion extend out farther from the web base than the side walls of the guide section in order to create impact drive shoulders that are formed at a substantially right triangle to the web base, wherein the side walls of said head section are wedge shaped to enhance penetration of said head section into the ground upon striking said impact drive shoulders with said distal drive end of said drive tube.

2. The post structure of claim 1 wherein a fastener couples the drive tube to the elongated stake member and an extraction shoulder is provided on said guide section for impacting the fastener on an upstroke of said drive tube for extracting said head section from the ground.

3. The post structure of claim 2 wherein a facade structure is placed over said drive tube and wherein said drive tube is fastened to said faade structure whereby down and up movement of said facade structure can respectively force said head section into and out of the ground.

4. The post structure of claim 2 wherein an elongated longitudinally oriented slot having a proximal end and a distal end is formed in said web base of said guide section, wherein said proximal end provides said extraction shoulder and wherein the fastener comprises a bolt affixed to said drive tube and passing generally laterally through said slot and slidable within said slot as said drive tube is moved up and down relative to said stake member.

5. The post structure of claim 1 wherein the entire length of said stake member comprises a unitary piece of steel having the web base and the parallel side walls, wherein the parallel side walls of said guide section are of uniform height throughout their lengths.

6. The post structure of claim 1 wherein said drive tube is circular in cross-section and wherein said impact drive shoulders defined by said side walls of said head section extend outwardly past a radius of said drive tube.

7. The post structure of claim 1 wherein a cross-sectional shape of the drive tube is different than the U-shaped channel configuration in cross-section of the guide section.

8. The post structure of claim 1 wherein less than an entire bottom edge of the distal drive end of the drive tube contacts the impact drive shoulders when the drive tube is in contact with the impact drive shoulders.

9. A utility support post structure comprising: an elongated impact drive tube having a longitudinally extending bore open at a distal drive end of said drive tube; an elongated stake member having a guide section slidably mounted within said bore and further having a ground penetrating elongated head section extending longitudinally outward from said distal drive end of said drive tube, said head section and said guide section being formed as a single piece and having a channel construction in cross-section with a common web base and common parallel side walls that extend outwardly from the web base such that a U-shaped open channel extends continuously from a distal end of the head section to a proximal end of the guide section, wherein the head section has a proximal portion and a distal portion, wherein the side walls of the proximal portion extend out farther from the web base than the side walls of the guide section so as to form shoulders that define an impact drive surface for engagement with the distal drive end of the drive tube, the impact drive surface being formed at a substantially right triangle relative to the web base, wherein a top edge of each side wall of said head section lies on a diagonal relative to said web base resulting in said side walls of said head section being wedge shaped to enhance penetration of said head section into the ground upon striking said impact drive surface with said distal drive end of said drive tube, wherein the web base of the guide section includes an elongated slot that is formed in a longitudinal direction and receives a bolt that is connected to and extends across the bore of the drive tube resulting in the drive tube and the elongated stake member being slidably coupled to one another, the elongated slot being located within the U-shaped open channel of the guide section and terminating at a location that is spaced in a proximal direction from the impact drive surface, wherein an impact plate is attached to the side walls of the head section and extends therebetween, the impact plate at least partially closing off the U-shaped open channel construction of the head section, the impact plate partially defining the impact drive surface.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

(1) The invention will be understood further from the following drawings wherein:

(2) FIG. 1 is an isometric view of the present post;

(3) FIG. 2 is an isometric view of the post as in FIG. 1 wherein the post is rotated about 80 on its longitudinal axis LA in the counterclockwise direction CC in FIG. 1;

(4) FIG. 3 is a cross-sectional view of the post taken along line 3-3 in FIG. 1;

(5) FIG. 4 is a cross-sectional view of the post taken along line 4-4 in FIG. 1,

(6) FIG. 5 is a partial cross-sectional view of the present post fitted out with a mail box support stanchion means;

(7) FIG. 6 is an exploded view of the mail box post embodiment components of FIG. 5;

(8) FIG. 7 is a lateral cross-sectional view of the mail box post embodiment taken along line 7-7 in FIG. 5;

(9) FIG. 8 is a longitudinal cross-sectional view of the mail box post embodiment taken along longitudinal axis 8 in FIG. 5;

(10) FIG. 9 is a longitudinal cross-sectional view taken along line 9-9 in FIG. 8; and

(11) FIG. 10 is a perspective view of a preferred head section.

DETAILED DESCRIPTION OF THE INVENTION

(12) The present utility post construction 10 having a longitudinal axis LA described in one preferred embodiment of FIGS. 1-4, as comprising an outer steel drive tube 12 and a ground penetrating steel stake member 14 having a guide section 16 and a head section 18 having a proximal phantom end 13 and a distal end 15. The stake member is formed preferably with a Channel (e.g., U-shaped) and wedge configuration, the head section having impact drive shoulders 20, 22 on its side walls 24, 26 respectively, said side walls each having a bottom edge 19, a top edge 21 formed on a diagonal 42, a phantom juncture edge 23 and a distal tip edge 25. A bore 28 extends through the outer steel device tube 12. The guide section 16 having side walls 24, 26 with top edges 35, a distal end 17 and a free (lost) motion power slot 38 formed thru its web base 30. Slot 38 has a proximal end 39 and a distal end 31. The web base 30 extends the full length of the stake member 14. It will therefore be appreciated that the side walls 24, 26 extend outwardly from the web base 30 and are parallel to one another and the head section 18 can be thought of as having a proximal portion and a distal portion, wherein side walls 24, 26 of the proximal portion extend out farther from the web base 30 than sidewalls 24, 26 of the guide section 16 in order to create the impact drive shoulders 20, 22 that are formed at a substantially right triangle to the web base 30.

(13) The drive tube 12 is shown as a round steel tube but can have, e.g., a square or rectangular cross-section as shown in FIG. 6. The diameter or lateral dimensions of 12 should be sufficient only to allow the distal end 32 of drive tube 12 to strike against shoulders 20, 22 of head section 18 and drive the head section into the ground 34. Preferably, an impact plate 27 is welded as at 52 to and between shoulders 20 and 22 to strengthen the shoulders and the head section 18 overall. Any type of hook or bracket or the like 36 may be provided on 12 or on any facade member such as 46 described below for supporting barbed wire or other items.

(14) The proximal end 39 of power slot 38 terminates at an extraction shoulder 40 which is impacted during the stake member extraction (upward throw of drive tube 12) by a pin or bolt 44, 44a or any structural equivalent slidable in slot 38 and fixed to drive tube 12.

(15) Referring to FIGS. 5 thru 9, the outer wall 37 of steel drive tube 12 is spaced from the inner wall of 41 a facade member 46 such as a sign or mail box support stanchion 47 which carries, e.g., arm 48 as shown in FIGS. 5-9 by spacers 50 and secured to 46 by, e.g., said bolts or pins 44 and 44a.

(16) A very important advantage of the present construction is that the open channel configuration facilitates insertion of head section 18 into the ground while affording considerable lateral stability to the post. In this regard, the open channel and wedge shape of 18 minimizes the frictional forces generated during insertion into and extraction of the head from the ground as compared to the frictional forces generated by solid or tubular configurations of the head section while providing the necessary lateral stability for maintaining the post in an upright posture.

(17) The invention has been described in detail with particular reference to preferred embodiments thereof, but it will be understood that variations and modifications will be effected within the spirit and scope of the invention.