| Patent Number |
Title Of Patent |
Date Issued |
| 5054565 |
Steering mechanism for a subsoil boring apparatus |
October 8, 1991 |
| In an apparatus for creating an underground bore hole using high-pressure fluid within a steerable drill string to disturb and displace the subsoil, the improvement of the steering capability of the boring head by the inclusion of a percussive device to hammer the drill string forward af |
| 4957173 |
Method and apparatus for subsoil drilling |
September 18, 1990 |
| A method and apparatus for creating an underground bore hole using high pressure fluid within a drill string to disturb and displace the subsoil. The drill string is steerable by increasing the pressure of the fluid above a predetermined range to a second range and apparatus is responsiv |
| 4923134 |
Self-propelled subsoil penetrating tool system |
May 8, 1990 |
| A means and method to pre-tension a cable or components thereof which provides an auxiliary reel mounted upon the primary cable reel, which auxiliary reel can be rotated independently of said primary cable reel and also rotated with said primary cable reel. The rotation of such auxiliary |
| 4866214 |
Service cable for a subsoil penetrating tool and method of preventing rotation of the cable when |
September 12, 1989 |
| A cable used with a subsoil penetrating tool which contains a plurality of tubes and hoses used to transport all operational fluids and a plurality of electrical conducting wires used to transmit power ane electrical impulses for information. A unique internal structure reduces the rotat |
| 4858703 |
Self-propelled subsoil penetrating tool system |
August 22, 1989 |
| A fluid-operated self-propelled subsoil penetrating tool of the type including an elongated housing member having a penetrating nose portion capable of ejecting a jet of liquid under high pressure to break up and disrupt the subsoil adjacent such nose portion followed by a two-component |
| 4842207 |
Device for detecting and measuring the tension on a cable |
June 27, 1989 |
| A cable reeling system which provides means to control the tension applied to a cable during rereeling including a reel having an axle supported by members mounted upon a first skid which also supports a drive motor for such a reel. The first skid is mounted upon a second, longer, skid t |
