Michael H Tjader, 781107 Balsam Ct, New Richmond, WI 54017

6830234, Dec 14, 2004

Jan 13, 2003

10/341549

Michael Tjader - New Richmond WI

TT Technologies, Inc. - Aurora IL

B66F 300

254134, 2541343 R, 2541343 FT

An improved cable pulling device and method is shown. The cable pulling device is smaller, less expensive, and easy to use for lateral line replacement. The cable pulling device includes a cable contacting portion that provides supplemental frictional force during a rotational pulling stroke. Among other advantages, this allows a smaller, more compact design that provides higher gripping and pulling power. Embodiments as described above further allow for a smooth jaw configuration that reduces cable damage. A cable pulling device is also shown that includes a configuration of a force distributing device. One embodiment includes substantially orthogonal plates that help to reduce device twisting during a pulling operation. In a further embodiment, a force distributing device is adapted for attachment to a ground working implement arm.

7125001, Oct 24, 2006

Sep 16, 2004

10/942411

Michael Tjader - New Richmond WI, US

TT Technologies, Inc. - Aurora IL

B66F 3/00

254134, 2541343 R

An improved cable pulling device and method is shown. The cable pulling device is smaller, less expensive, and easy to use for lateral line replacement. The cable pulling device includes a cable contacting portion that provides supplemental frictional force during a rotational pulling stroke. Among other advantages, this allows a smaller, more compact design that provides higher gripping and pulling power. Embodiments as described above further allow for a smooth jaw configuration that reduces cable damage. A cable pulling device is also shown that includes a configuration of a force distributing device. One embodiment includes substantially orthogonal plates that help to reduce device twisting during a pulling operation. In a further embodiment, a force distributing device is adapted for attachment to a ground working implement arm.

7147065, Dec 12, 2006

Jan 14, 2004

10/757378

Michael Tjader - New Richmond WI, US

TT Technologies, Inc. - Aurora IL

E21B 17/20

175 57, 175320

Drill stem elements and connections are shown with advantages such as being mechanically robust. The absence of a side access window in a sonde housing is one design feature that provides robust mechanical properties. Further advantages of sonde housings include being easy to disassemble for access to the sonde unit, or for insertion of the sonde unit. In one embodiment, a cap portion is easily secured or removed using a small allen wrench, or a hammer and a punch. The cap portion is not substantially affected or tightened by rotation of the drill stem during a drilling operation. A further advantage includes the ability to remove cap portions and pull back flexible product such as polyethylene pipe from a small exit pit.

7217065, May 15, 2007

Jan 13, 2004

10/756811

Michael Tjader - New Richmond WI, US

TT Technologies, Inc. - Aurora IL

E21B 29/00

4051843, 166 552, 166 551, 166 557

A pipe breaking assembly is shown with a modular design that allows a user to more economically purchase a single base unit that is adaptable using a number of elements. Combinations of elements such as blade portions and expander cones, etc. allow the modular assembly to be tailored to a variety of job conditions. A pipe breaking assembly is shown that includes a particular configuration where a blade portion is located in front of a shortened expander cone. The shortened expander cone provides a lower contact area that in turn reduces friction.

7284624, Oct 23, 2007

Jan 9, 2004

10/754221

Michael Tjader - New Richmond WI, US

IT Technologies, Inc. - Aurora IL

E21B 19/16

175 85, 81 5734, 81 5719, 166 7753

A drill gripping device is shown with an inexpensive and compact design. In one embodiment, an inexpensive and more compact design is possible through the use of a single actuator with a single gripping portion of a drill gripping device. Embodiments of drill gripping devices shown are further reduced in price and size due to a force amplification device such as a camming arm. Alternatively, an increased gripping force is possible using an existing size actuator. A drill gripping device is shown with increased precision in gripping. A pair of gripping jaws are synchronized to improve jaw centering capabilities.

7318490, Jan 15, 2008

Oct 26, 2006

11/553321

Michael Tjader - New Richmond WI, US

IT Technologies, Inc - Aurora IL

E21B 7/08

175 57, 175 73, 175320, 175 61

Drill stem elements and connections are shown with advantages such as being mechanically robust. The absence of a side access window in a sonde housing is one design feature that provides robust mechanical properties. Further advantages of sonde housings include being easy to disassemble for access to the sonde unit, or for insertion of the sonde unit. In one embodiment, a cap portion is easily secured or removed using a small allen wrench, or a hammer and a punch. The cap portion is not substantially affected or tightened by rotation of the drill stem during a drilling operation. A further advantage includes the ability to remove cap portions and pull back flexible product such as polyethylene pipe from a small exit pit.

7341404, Mar 11, 2008

Aug 29, 2005

11/215316

Michael Tjader - New Richmond WI, US

TT Technologies, Inc. - Aurora IL

F16L 55/18

4051843, 405156, 138 97

A puller is provided with a number of advantages. Pullers are described that have a high power to weight ratio, and a high power to volume ratio. Examples of pullers and pulling systems include harmonic drive gear reduction elements and configurations that provide high cable friction in a small device volume. Examples of pullers and pulling systems also include constant force pulling which is desirable in particular for small diameter pipe replacement. Using pullers and pulling systems as described, minimally invasive pipe replacement operations are possible. Reversible pullers are also provided that decrease the amount of time needed to burst or split multiple segments of pipe.

7384214, Jun 10, 2008

Aug 9, 2006

11/463530

Michael Tjader - New Richmond WI, US

TT Technologies, Inc. - Aurora IL

F16L 1/028

4051843

A pipe splitting assembly includes a pipe splitter, for instance, a cutter with one or more blades. An expander is flexibly coupled with the pipe splitter and allows the pipe splitter to rotate out of alignment with the longitudinal axis of the expander. In one example, the pipe splitter includes a cylindrical base portion and a frusto-conical base portion proximal to the cyclindrical base portion, and an exterior surface of the frusto-conical base portion is flush with an exterior surface of the expander. In another example, the expander has a larger outer perimeter than the cutter. Optionally, the pipe splitting assembly further includes a puller shoulder sized and shaped to couple with the expander, and a puller sleeve adapted to receive and hold a replacement pipe.