Douglas W Motzno

20050081354, Apr 21, 2005

Oct 16, 2003

10/605666

Douglas Motzno - Raleigh NC, US
Bruce Loughton - Earleville MD, US

HYDRILL, INC. - Raleigh NC

B23P006/00
B23P019/04

029402120, 029402080, 029402090, 029402110, 029426400, 029426500, 029700000

A method and apparatus are disclosed for replacing riveted metal components in place on existing metal structures. The method includes the steps of positioning a rivet removing tool at a rivet on an in situ structural component that is maintained in place by a plurality of rivets, encoding the position of the rivet removing tool at the rivet and transmitting the encoded position of the rivet to a processor, removing the rivet, sequentially moving the rivet removing tool to each of the rivets on the structural component that hold the structural component in place, sequentially encoding the position of the rivet removing tool at each rivet, transmitting the encoded the position of each rivet to the processor, and removing each rivet with the tool when the tool is at the rivet, designing a replacement component based upon the encoded positions of the rivets and fabricating the replacement component based on the transmitted rivet positions.

20050050706, Mar 10, 2005

Sep 4, 2003

10/654016

Douglas Motzno - Raleigh NC, US

B24C005/00
B23P019/02

029426500, 029426400, 029700000

A method and apparatus for the removal of rivets from steelwork employs a high velocity narrow stream of water, containing abrasive particles, to cut through the head of the rivet in a circular path that produces a ring. The remainder of the rivet is then easily extricated from the steelwork. The apparatus includes a cutting head assembly having a nozzle that is driven in a circular path. A mounting device removable anchored to the steelwork supports the cutting head assembly.

20210222818, Jul 22, 2021

Jan 22, 2020

16/749294

Douglas W Motzno - Knightdale NC, US

F16L 55/26
B08B 9/043
E03B 7/00
E03F 9/00
B05B 3/10
B05B 13/04
F16L 55/30
F16L 55/40

A system for maintaining conduits and pipes after their installation into a pipeline system used to transport material in a fluid or flowable form. The system includes a maintenance tool adopted for use inside the pipe, an umbilical attached to the maintenance tool for pulling the tool through the pipe; and a pluralities of bearings positioned around the umbilical in order to allow the tool to be pulled through the pipe around bends and turns in the pipe.