Peggy J Sims

US Patent:

60105755, Jan 4, 2000

Filed:

Dec 18, 1996

Appl. No.:

8/768602

Inventors:

Peggy L. Sims - Seabrook TX

Assignee:

Praxair Technology, Inc. - Danbury CT

International Classification:

B08B 904

US Classification:

134 8

Abstract:

A process for pipe cleaning using one or more cleaning modules which are propelled through the pipe by a hydraulic fluid to apply at least two cleaning tips in a particular alternating sequence. The hydraulic fluid is inspected to determine when no further abrasive cleaning is required. When such a determination is made, another tip is applied to finish the surface of the pipe.

US Patent:

56075138, Mar 4, 1997

Filed:

Dec 13, 1995

Appl. No.:

8/571481

Inventors:

Peggy L. Sims - Seabrook TX

Assignee:

Praxair Technology, Inc. - Danbury CT

International Classification:

B08B 904

US Classification:

134 8

Abstract:

A process for pipe cleaning using a cleaning module which is propelled through the pipe by a hydraulic fluid and has at least two cleaning tips attached in a particular alternating sequence. The hydraulic fluid is inspected to determine when no further abrasive cleaning is required. When such a determination is made, another tip is applied to finish the surface of the pipe.

US Patent:

56980426, Dec 16, 1997

Filed:

Feb 9, 1996

Appl. No.:

8/599212

Inventors:

Peggy L. Sims - Seabrook TX
Joseph L. Greene - Decatur TX
John W. Hoose - Spring TX

Assignee:

Praxair Technology, Inc. - Danbury CT

International Classification:

B08B 904

US Classification:

134 8

Abstract:

A method for cleaning furnace headers using a cleaning module for cleaning pipes, having a flexible body with a cleaning surface and a nose at each end, the nose being tapered to a tip. The dimensions of the cleaning module are such that the ratio of the overall length to the diameter is about 1. 5 to about 1. 75 and the ratio of overall length to nose length is about 5 to about 10.