THOMAS B. BOISTURE
General Contractor in Baytown, TX

5031691, Jul 16, 1991

Oct 19, 1990

7/600484

Thomas B. Boisture - Baytown TX

Ohmstede Mechanical Services, Inc. - Baytown TX

F22B 3752

165 95

A multi-lance cleaning apparatus for cleaning the interior of heat exchanger tubes, the apparatus having a lance housing, a slidable manifold within the lance housing, a single conduit connecting the manifold with a high pressure, high volume, fluid source, a hose enclosure for enclosing the high pressure water hose permitting the hose to advance and retract, means for moving the manifold within the housing, a plurality of lances removably attached to the manifold and adapted to fit within a heat exchanger tube, tube guides to guide and support the lances, and a slide plate on which the manifold is located for preventing the lances from bending and entering the hose enclosure. The apparatus may further include means for positioning and guiding the housing with respect to a heat exchanger tube bundle to be cleaned.

2002018, Dec 5, 2002

Jul 23, 2002

10/201334

Thomas Boisture - Baytown TX, US
David Cichon - O-fallon MO, US
Jeffrey Wilson - Winfield IL, US
Michael Uremovich - Manhattan IL, US

Starcon International, Inc. - Manhattan IL

B66F019/00

414/745300, 029/726500

An apparatus and a method to remove and install heat exchanger bundles. The apparatus comprises a main frame supporting wheel assemblies. A second frame is vertically displaceable relative to the main frame. A lifting system is provided which elevates the entire unit so that the wheel assemblies are off the ground a minimal distance to ensure stability and then the second frame is elevated the remaining amount to the final elevation of the heat exchanger bundle to be removed or installed. The preferred embodiment includes a horizontally displaceable portion of the second frame for supporting the heat exchanger as it is extracted from the shell side assembly. The unit is self-contained including power means to horizontally displace the frame to affect the displacement of the heat exchanger, lower the second frame relative to the main frame, and then lower the entire unit to the ground. The unit is also powered so that the wheel assemblies which are individually steerable can maneuver the unit into a restricted area.

5588593, Dec 31, 1996

Jun 5, 1995

8/464958

Thomas B. Boisture - Baytown TX

C.H. Heist Corp - Baytown TX

B05B 102, B05B 1500, B26F 300

239 67

A safety apparatus for use in a hydrocutting or hydroblasting system which has a normally closed shutoff valve for coupling a high pressure water source to a hydrocutting or hydroblasting gun. The shutoff valve is controlled by a solenoid valve coupled between an air-to-open (ATO) input of the shutoff valve and an air power source. A normally open inductive proximity switch, through a relay circuit, provides a control signal to the solenoid valve. The inductive proximity switch is located near a cutting or cleaning nozzle of the gun. When the inductive proximity switch comes in close proximity of a metal object to be cleaned or cut, the proximity switch closes, thereby opening the solenoid valve and the shutoff valve. When the gun is removed from the physical proximity of the metal, the inductive proximity switch opens, thereby turning off the shutoff valve.

5067558, Nov 26, 1991

Oct 19, 1990

7/600485

Thomas B. Boisture - Baytown TX

Ohmstede Mechanical Services, Inc. - Baytown TX

F22B 908

165 95

A multi-lance cleaning apparatus for cleaning the interior of heat exchanger tubes, the apparatus having a lance housing, a slidable manifold within the lance housing, a single conduit connecting the manifold with a high pressure, high volume fluid source, a spool for storing the conduit permitting it to be advanced and retracted, means for moving the manifold within the housing, a conduit securing and supporting assembly, a plurality of lances removably attached to the manifold and adapted to fit within a heat exchanger tube and tube guides to guide and support the lances. The apparatus further includes a means for positioning the housing with respect to a heat exchanger tube bundle to be cleaned.

5002120, Mar 26, 1991

Mar 8, 1990

7/490776

Thomas B. Boisture - Baytown TX
Larry D. McGrew - Cleveland TX
James D. Jeffrey - Baytown TX
Gene P. Livingston - Pleasant Hill CA

F28G 100

165 95

A multi-lance cleaning apparatus for cleaning the interior of heat exchanger tubes, the apparatus having a lance housing, a slidable manifold within the lance housing, a single conduit connecting the manifold with a high pressure, high volume fluid source, a spool for storing the conduit permitting it to be advanced and retracted, means for moving the manifold within the housing, a plurality of lances removably attached to the manifold and adapted to fit within a heat exchanger tube and tube guides to guide and support the lances. The apparatus further includes a means for positioning the housing with respect to a heat exchanger tube bundle to be cleaned.

5129455, Jul 14, 1992

Oct 19, 1990

7/600320

Thomas B. Boisture - Baytown TX

Ohmstede Mechanical Services, Inc. - Baytown TX

F22B 908

165 95

An improved multi-lance cleaning apparatus for cleaning the interior of heat exchanger tubes, the apparatus having a lance housing, a slidable manifold within the lance housing, a single conduit connecting the manifold with a high pressure, high volume fluid source, a spool for storing the conduit permitting it to be advanced and retracted, means for moving the manifold within the housing, a plurality of lances removably attached to the manifold and adapted to fit within a heat exchanger tube and tube guides to guide and support the lances. The lances include a plurality of flexible lances attached to rigid lances and adapted to fit within a heat exchanger tube which are capable of traversing a curved path within the tube bundle.

RE36465, Dec 28, 1999

Nov 22, 1996

8/755778

Thomas B. Boisture - Baytown TX

C.H. Heist Corp. - Clearwater FL

B08B 302

134 221

A furnace cleaning apparatus for cleaning a cyclone furnace with a fluid from a fluid source. The furnace cleaning apparatus comprises a beam assembly capable of being pivotably mounted to the cyclone furnace. A rotary actuator is connected to the beam assembly for turning the beam assembly. A trolley is movably mounted to the beam assembly. A chain drive assembly and a drive source for moving the trolley relative to the beam assembly are mounted to the beam assembly. An articulated arm assembly is pivotally connected to the trolley. A rotary actuator is mounted to the articulated arm assembly for pivoting the articulated arm assembly relative to the trolley. A nozzle is connected to a second end of the articulated arm assembly. A fluid conduit connects the nozzle to a fluid source.

5582349, Dec 10, 1996

Oct 2, 1995

8/538140

Thomas B. Boisture - Baytown TX

C. H. Heist Corp - Baytown TX

B05B 1100

239124

An improved hydroblasting gun having an on/off safety switch system. The on/off switch system comprises at least two actuatable triggers each displacing a specified volume of incompressible fluid which, when coupled with a predetermined volume within an actuator, displaces a piston initiating a signal. In specific application, two separate triggers are depressed displacing a predetermined volume in an actuator adjacent a shut-off valve. Until the actuator fully opens the shut-off valve, hydroblasting operations may not begin. In this manner, the chances of accidental discharge through the depression of a single trigger are eliminated and preferred ergonomical characteristics are provided.

5535949, Jul 16, 1996

May 25, 1995

8/450795

Thomas B. Boisture - Baytown TX

C. H. Heist Corp. - Baytown TX

B05B 1100

239124

An improved safety switch system for hydroblasting and hydrocutting operations. The switch system comprises at least two actuatable triggers each displacing a specified volume of incompressible fluid which, when coupled with a predetermined volume within an actuator, displaces a piston initiating a signal. In specific application within a hydroblasting gun, two separate triggers are depressed displacing a predetermined volume in an actuator adjacent a dump valve. Until the actuator fully closes the dump valve, hydroblasting operations may not begin. In this manner, the chances of accidental discharge through the depression of a single trigger are eliminated and preferred ergonomical characteristics are provided.

5018544, May 28, 1991

Mar 6, 1990

7/489001

Thomas B. Boisture - Baytown TX
Larry D. McGrew - Cleveland TX
James D. Jeffrey - Baytown TX
Robert G. Wetzel - Humble TX
Gene P. Livingston - Pleasant Hill CA
Robert A. Baten - Houston TX

Ohmstede Mechanical Services, Inc. - Baytown TX

B08B 302

134111

A mobile tube bundle cleaning apparatus comprised of a truck mounted fluid and hydraulic pressure sources including high pressure pumps and diesel engines. The apparatus further includes a trailer mounted tube bundle cleaning system including an articulable mobile crane, outriggers for stabilizing the trailer during cleaning operations and a system for supporting and rotating a tube bundle during cleaning operations. The apparatus further includes a remote control pedestal from which an operator may control the fluid pressurizing system, the crane and the operation of the tube bundle rotating system.