Robert Austin Hart

US Patent:

43712959, Feb 1, 1983

Filed:

Mar 19, 1981

Appl. No.:

6/245454

Inventors:

Robert J. Hart - Tulsa OK

Assignee:

Commercial Resins Company - Tulsa OK

International Classification:

B65G 5340

US Classification:

406128

Abstract:

A system for spraying fluidized powder comprising at least one powder dispenser, a powder fluidization chamber containing a quantity of powder therein, a fluidization hose for introducing a stream of air into the chamber to fluidize the powder therein, at least one powder blower having an outlet from which a stream of air is allowed to pass, at least one powder control valve connected to the chamber and in communication with the fluidized powder therein, a rod for actuating each powder control valve wherein a quantity of fluidized powder is exhausted into an orifice in each powder control valve, a powder hose for introducing the fluidized powder from each powder control valve into the sides of each powder blower outlet, a conduit connecting each powder blower outlet with a portion of each powder dispenser for supplying a stream of fluidized powder, and a fluidization blower from which a stream of fluidizing air is allowed to pass into the fluidization hose.

US Patent:

39721493, Aug 3, 1976

Filed:

Mar 3, 1975

Appl. No.:

5/554510

Inventors:

Robert J. Hart - Tulsa OK

Assignee:

Commercial Resins Company - Tulsa OK

International Classification:

B24C 324

US Classification:

51 8R

Abstract:

A device for abrasive-blast cleaning of the end of a pipe prior to welding, comprised of a disc engagable with the pipe end to be blast-cleaned and held in position by adjustable bolts and rams, a positioning spider used to position the disc with respect to the end of the pipe, a blasting head affixed to the positioning spider and movable circumferentially over the end of the pipe, means for supplying abrasive material under pressure to the blasting head and drive means for rotating the positioning spider and blasting head.

US Patent:

43088198, Jan 5, 1982

Filed:

Aug 11, 1980

Appl. No.:

6/177086

Inventors:

Robert J. Hart - Tulsa OK

Assignee:

Commercial Resins Co. - Tulsa OK

International Classification:

B05C 1900

US Classification:

118307

Abstract:

A system for spraying fluidized powder circumferentially around a pipe comprising a powder applicator ring engageable with a pipe and having a pair of powder dispensers mounted thereon, a powder fluidization chamber containing a quantity of powder therein, a hose for introducing a stream of air into the chamber to fluidize the powder therein, a powder recovery canister having a pair of axially opposed powder blowers mounted thereon which have their intakes in communication with the interior of the recovery canister, each powder blower having an outlet from which a stream of air is allowed to pass, a pair of tangential inlet pipes circumferentially spaced and connecting with the interior of the canister, a pair of powder control valves connected to the chamber and in communication with the fluidized powder therein, a rod for actuating the powder control valves wherein a quantity of fluidized powder is exhausted into an orifice in each powder control valve, a hose for introducing the fluidized powder from each powder control valve into the sides of each powder blower outlet, a conduit connecting each powder blower outlet with a portion of each powder dispenser for supplying a stream of fluidized powder, a return conduit connecting each tangential inlet pipe to another portion of each dispenser for returning excess powder to the canister, and a fluidization blower mounted on the cylinder from which a stream of fluidizing air is allowed to pass.

US Patent:

40056775, Feb 1, 1977

Filed:

Mar 6, 1974

Appl. No.:

5/448670

Inventors:

Robert J. Hart - Tulsa OK

Assignee:

Commercial Resins Company - Tulsa OK

International Classification:

B05C 500
B05C 1900

US Classification:

118307

Abstract:

An apparatus for circumnavigating a dispenser about a pipe includes a frame carrying a pair of endless belts locateable on the pipe and carrying the dispenser. The belt carrying frame is hinged to a semi-circular frame, together to encircle the pipe. A locking assembly interconnects the belt carrying and semi-circular frames to secure the frames to the pipe, and a motor on the dispenser carrying frame rotates the endless belts to propel the frames and dispenser around the pipe.

US Patent:

54439140, Aug 22, 1995

Filed:

Dec 17, 1993

Appl. No.:

8/169160

Inventors:

Robert N. Hart - Tulsa OK
Christopher S. Simmons - Catoosa OK

Assignee:

Nordam - Tulsa OK

International Classification:

B32B 904

US Classification:

428447

Abstract:

An enhanced acrylic for use in transparencies that provides an effective barrier to airborne environmental chemical agents that are known to craze standard stretched acrylics.

US Patent:

40389421, Aug 2, 1977

Filed:

Aug 4, 1976

Appl. No.:

5/711635

Inventors:

Robert J. Hart - Tulsa OK

Assignee:

Commercial Resins Company - Tulsa OK

International Classification:

B05B 1302

US Classification:

118305

Abstract:

A system for spraying powder circumferentially around a pipe comprising a yoke engagable with the pipe for more than 180. degree. of the pipe. The yoke has a powder dispenser mounted thereon and means are provided for driving the yoke circumferentially about the pipe. The system also includes a powder suspension device and a blower-suction device providing a stream of air under pressure to the powder suspension device for creating an air-powder suspension therein. The powder dispenser has an inner housing and an outer housing both having openings adjacent the surface of the pipe and arcuately shaped to conform with the curvature of the pipe. The outer housing forms a space around the periphery of the inner housing. A first conduit connects the powder suspension device to the inner housing of the powder dispenser to provide a spray or stream of air-powder suspension to the surface of the pipe. Another conduit connects with the outer housing of the powder dispenser and the suction inlet of the blower-suction device to suck excess powder from the weld joint and return it to the system.

US Patent:

42378176, Dec 9, 1980

Filed:

Mar 23, 1979

Appl. No.:

6/023095

Inventors:

Robert J. Hart - Tulsa OK
Russell M. Langley - Tulsa OK

Assignee:

Commercial Resins Company - Tulsa OK

International Classification:

B05B 106
B05B 1504

US Classification:

118307

Abstract:

Apparatus for spraying a powder circumferentially around a pipe joint on a pipe comprising a yoke engagable with the pipe, one or more powder dispensers mounted on the yoke and disposed over the pipe joint, means for driving the yoke circumferentially about the pipe, each powder dispenser having an inner housing provided with an opening positioned adjacent the surface of the pipe for supplying a quantity of air-powder suspension to the surface of the pipe over the pipe joint, each powder dispensing device also having an outer housing surrounding the inner housing and being provided with an opening positioned adjacent the pipe and surrounding the opening of the inner housing, the inner and outer housings of each powder dispenser defining a space therebetween. A powder suspension device is provided having a hollow container adapted to contain a quantity of powder therein and a means for introducing air under pressure adjacent the bottom of the container to place the powder in suspension in the container. A blower is also provided having an inlet and a tangential outlet from which a stream of air emerges.

US Patent:

45638411, Jan 14, 1986

Filed:

Jun 22, 1984

Appl. No.:

6/623345

Inventors:

Milburn L. Hart - Tulsa OK
Robert J. Hart - Oologah OK

Assignee:

Resource Engineering & Manufacturing Company - Tulsa OK

International Classification:

B24C 332

US Classification:

51411

Abstract:

A machine for cleaning the interior uncoated surfaces surrounding the weld joints in an otherwise internally coated pipeline comprising a first plate mounted on the machine and extending transversely across the pipeline when the machine is disposed within the pipeline, a second plate mounted on the machine in spaced parallel relation with the first plate, a first resilient member mounted on the first plate and having a circular periphery for engaging the inner periphery of the pipeline wall, a second resilient member mounted on the second plate and having a circular periphery for engaging the inner periphery of the pipeline wall, the first and second plates with their attached resilient members forming a closed cleaning chamber sealed at its ends with respect to the pipeline, a hollow rotatable hub mounted on the machine and within the cleaning chamber and rotatable on an axis substantially co-axial with the longitudinal central axis of the pipeline, a plurality of hollow tubes extending radially outward from the hub and in communication with the interior of the hub, a motor for rotating the hub whereby air is forced outwardly through the tubes to create a partial vacuum within the interior of the hub, arrangement for supplying particulate abrasive material to the interior of the hub whereby the vacuum created upon rotation of the hub will cause the particulate material to be propelled outwardly against the interior of the pipeline wall, wheels for moving the machine so as to position the radial tubes in alignment with a weld joint whereby, upon rotation of the hub and upon supplying the hub with particulate abrasive material, the tubes will propel the particulate material against the weld joint to clean the same by a sand blasting effect, a rotary disc and linkage acting in timed response to the initial rotation of the hub for oscillating the plates and hub as a unit longitudinally with respect to weld joint whereby the tubes will move alternately back and forth across the weld joint to clean the entire weld joint area, and a vacuum head for removing accumulated spent particulate material and blasted-off material continuously from the cleaning chamber.