| US 7,473,337 B2 | ||
| Remotely controlled decoking tool used in coke cutting operations | ||
| Ruben F. Lah, West Jordan, Utah (US) | ||
| Assigned to Curtiss-Wright Flow Control Corporation, Falls Church, Va. (US) | ||
| Filed on Oct. 06, 2005, as Appl. No. 11/245,384. | ||
| Application 11/245384 is a continuation in part of application No. 10/997234, filed on Nov. 24, 2004, granted, now 7,117,959. | ||
| Claims priority of provisional application 60/564449, filed on Apr. 22, 2004. | ||
| Prior Publication US 2006/0081456 A1, Apr. 20, 2006 | ||
| Int. Cl. B01D 3/00 (2006.01); B23B 51/06 (2006.01) | ||
| U.S. Cl. 202—239 [202/241; 202/262; 202/270; 408/61] | 29 Claims |
| 1. A system for removing coke from a coking vessel comprising:
a coke cutting drill stem and coke cutting head including cutting nozzles and boring nozzles which includes passages through
said cutting head through which fluid flows alternatively through said cutting nozzles or boring nozzles;
a flow diversion apparatus in fluid connection with said drill stem and cutting head comprising a rotatable main body coupled
to flow diversion caps;
and a shifting apparatus coupled to the flow diversion apparatus which rotates the flow diversion apparatus alternatively
blocks the fluid flow through one set of passages while opening the fluid flow through the other set of passages within the
cutting head, wherein said shifting apparatus is actuated when fluid pressure within the drill stem and cutting head is decreased.
|