Lynn Walter Cook
Land Surveyors in West Kaysville, UT

5720891, Feb 24, 1998

Apr 15, 1996

8/631140

Lynn W. Cook - Fruit Heights UT
Michael J. Graham - Tooele UT
Brad K. Hansen - Salt Lake City UT
Marty L. Stout - Salt Lake City UT
Jeremy G. Scott - West Bountiful UT

Baker Hughes Incorporated - Houston TX

B01D 2118

210803

A retractable sediment collection device for use in settling tanks is disclosed which has means for collecting and removing sediment from the floor of the settling tank. The retractable sediment collection device is structured to move back and forth along the floor of a tank to remove the sediment therefrom. The retractable sediment collection device includes a lifting mechanism which engages a sediment collector and raises it from the floor of the tank. Although the retractable sediment collection device is suitable for use in any kind of settling tank, it is particularly suited for use in closed tanks where access to the interior of the tank is limited through a single opening. The retractable sediment collector may be raised from floor of the tank to the top of the tank where the operating mechanisms can be accessed for repair or maintenance without removing the entire sediment collector from the tank.

5423895, Jun 13, 1995

Aug 23, 1993

8/110426

Jeffrey L. Wight - Salt Lake City UT
Lynn W. Cook - Fruit Heights UT
David P. Brown - Salt Lake City UT

Baker Hughes Incorporated - Houston TX

C02F 312, B65D 8848, B09B 300

48197A

A gas-holding sludge digester is disclosed having a sideskirt which telescopes in a liquid chamber which is separate from a main digester tank and wherein the ballast is structured to increase gas pressure of the gas contained within the cover as the sideskirt telescopes upward.

5092482, Mar 3, 1992

Mar 12, 1990

7/492776

Jeffrey L. Wight - Salt Lake City UT
Lynn W. Cook - Fruit Heights UT

Envirotech Corporation - Salt Lake City UT

CF2

220217

A sludge digester gas-holder is disclosed having a gas-holding cover with ballast members submergible in a liquid medium contained within a chamber circumscribing the upper portion of the tank wall and separate from the main tank cavity.

4391705, Jul 5, 1983

May 29, 1981

6/268214

Lynn W. Cook - Fruit Heights UT
David P. Brown - Salt Lake City UT

Envirotech Corporation - Salt Lake City UT

C02F 1104

210218

A digestor includes a tank and an inverted dish-shaped cover, the lower end of which extends into sludge contained within the tank. The cover is ballasted by a number of ballast members which resemble tubs and which are integrally formed of concrete. Each ballast member is mounted with its cavity facing upwardly so that the ballast cavities automatically fill with sludge upon start-up of the digestor. When partially surfaced above the sludge, the predetermined total weight of sludge in the ballast members causes a substantial increase in the pressure exerted by the cover on the contained gas than would be exerted by the cover and unfilled ballast members.

4541210, Sep 17, 1985

Jun 23, 1983

6/507429

Lynn W. Cook - Fruit Heights UT

Envirotech Corporation - Salt Lake UT

E04B 706

52 82

A cover and erection method for a tank, sedimentation device or building cover constructed over or within a generally continuous upstanding circular side wall (30), made up of a series of concentric spaced thrust rings (11, 12, 21) having multiple short curved radial beams (14, 19) bridging the annuli between the rings and cover plates (17, 21) extending across the spaces between adjacent ones of the beams between each of the spaced rings. Erection may be from the wall inwardly or from the center to the wall. In either event an intermediate thrust ring is temporarily supported at an elevation above and within the side wall and the beams set across the rings in relatively short radial spans prior to welding of beams and plates to the respective rings. By this technique, small lightweight beams can be utilized for building large-diameter covers or domes with each rise span being of relatively small length. Each rise may be designed in terms of beam and plate size independently of the beam and plate size used in the previous rise.

4378437, Mar 29, 1983

Oct 28, 1981

6/315719

Lynn W. Cook - Fruit Heights UT

Envirotech Corporation

C12M 100

435287

An improved anaerobic digester 10 includes a cylindrical concrete sidewall 16 having a plurality of guide channel assemblies 40 bolted thereto at uniformly spaced locations along its circumference. The digester further includes a cover 18 adapted to be buoyed upwardly above the surface of the liquid by the digester gas. The digester cover is guided by roller assemblies 70 that cooperate with the guide channel assemblies 40. When gas is not present within the digester, the cover is supported by the cooperation of a plurality of stop tubes 76 and 78 that project radially outwardly of the cover from a thrust ring 24 incorporated at its periphery and a plurality of stop members 60 and 62 that are affixed to the guide channel assemblies at readily accessible locations close to the top of the tank.

5238844, Aug 24, 1993

Mar 8, 1991

7/666800

Jeffrey L. Wight - Salt Lake City UT
Lynn W. Cook - Fruit Heights UT

Baker Hughes Incorporated - Houston TX

C12M 100, C12M 136

435287

A sludge digester having a main tank in conjunction with a gas-holding cover is disclosed. The cover includes a roof and a depending sideskirt which telescopes in relationship to the main tank. Positioned at the bottom edge of the sideskirt are a multitude of ballast members. A chamber, adapted to contain a quantity of liquid, is associated with the main tank. The sideskirt and the ballast members are submerged within the liquid contained within the chamber to form a gas tight seal of the cover with the main tank. The chamber also includes a system for maintaining a predetermined liquid level in the chamber dependent on the position of the ballast members in the chamber.