| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 029890031 | Repairing, converting, servicing or salvaging | 12 |
| 20090119921 | Method for making orifices in the secondary casings of a pressurized water reactor steam generator - The method consists in making sure that the steam generator ( | 05-14-2009 |
| 20090172945 | Double Expansion Boiler Tube Plug - The following substitute specification does not contain and new matter as that submitted in the Provisional Patent Application No. 61/018,908 filed on Jan. 4, 2008. The boiler plug system of the invention is intended for plugging leaks in the steel tube flue gas-to-water heat exchangers of steam boilers. The boiler plug of the invention is adaptable to the varied sizes of heat exchanger tubes. In this specification, the elements of the invention will be described as applied to two (2) inch ID (inside diameter) steel tubing heat exchangers with the understanding that the boiler plug of the invention can be made smaller or larger as the particular application may require. The boiler plug of the invention is readily adaptable to heat exchanger tubing of one and one-half (1.5) to three (3) inch ID. | 07-09-2009 |
| 20090211094 | METHOD AND APPARATUS FOR INSTALLING NITINOL PLUG - A memory metal or Nitinol plug is inserted into a tube and heated to cause the plug to expand as it transforms from a martensitic state to an austenitic state. The plug is held by a tool connected to an electric conductor. The tube is then grounded and current is run through the holder, the plug, and, in turn, the tube. Electrical resistance causes the plug to heat up and revert to the austenitic state. The holder is preferably a tube with an internal collet, spring urged into a closed position adapted to grasp a post of the Nitinol plug. To separate the holder from the plug, the collet is pulled to an expanded position by pulling the holder from the tube. This allows the collet to open and separate from the plug. | 08-27-2009 |
| 20100101089 | HANDLING SPINE FIN COILS, WINDERS, REELS, SHAPERS AND/OR PROCESSING SPINE FIN AND TRANSITION TUBE SPLICING AND REWORK - A method of salvaging a scrap partially completed spine fin coil by initially placing the partially completed coil on a reel. Connecting an end of a straight tube that is helically wrapped with a spine fin strip to an end of the partially completed coil while said partially completed coil is on the reel, rotate the reel after completing the connection until the partially completed spine fin coil is complete. | 04-29-2010 |
| 20100307002 | Systems and Methods for Making Seals in Heat Exchangers - Systems and methods for improving heat exchangers by implementing self-energizing seals. In one embodiment, a U-tube heat exchanger includes a shell enclosure, a tube sheet, a closure and a set of tubes welded to the tube sheet. The tube sheet separates first and second chambers from a third chamber in the shell enclosure. The closure seals the first and second chambers. Each tube extends from the first chamber, through the third chamber to the second chamber. The improvement comprises a seal between the shell enclosure and either the closure or the tube sheet. The seal includes conically tapered sealing surfaces on the shell enclosure and closure or tube sheet which form a wedge-shaped gap. A seal ring having surfaces complementary to the sealing surfaces of the shell enclosure and closure or tube sheet is positioned between the sealing surfaces to form a self-energized seal. | 12-09-2010 |
| 20110258853 | METHOD FOR REPAIRING PLATE HEAT EXCHANGERS - A method for repairing a plate heat exchanger of the type comprising a plurality of plates which, together with side bars arranged on the plates, define fluid flow paths is presented. | 10-27-2011 |
| 20120246935 | CORROSION RESISTANT MATERIAL FOR REDUCED FOULING, A HEAT TRANSFER COMPONENT HAVING REDUCED FOULING AND A METHOD FOR REDUCING FOULING IN A REFINERY - A method and device for reducing sulfidation corrosion and depositional fouling in heat transfer components within a refining or petrochemical facility is disclosed. The heat transfer components are formed from a corrosion and fouling resistant steel composition containing a Cr-enriched layer having a surface roughness of less than 40 micro inches (1.1 μm) and a protective layer formed thereon. | 10-04-2012 |
| 20130014390 | CONFIGURATIONS AND METHODS FOR RETROFITTING AN NGL RECOVERY PLANT - Devices and methods for retrofitting a natural gas liquids plant are contemplated to extend recovery of C3+ hydrocarbons from various feed gases to recovery of C2+ and C3+ hydrocarbons. In especially preferred aspects, dedicated C2+ exchangers are integrated to exclusively cool the feed gas to produce a cooled absorber feed and to produce two separate absorber reflux streams. During C2+ recovery, absorber reflux is provided by a portion of the residue gas and a portion of the feed gas, while during C3+ recovery absorber and distillation column reflux are provided by the distillation column overhead product. | 01-17-2013 |
| 20130111755 | SEAL AND METHOD OF SEALING ASPECTS OF A BOILER FOR HIGH TEMPERATURE ENVIRONMENT OF A BOILER ASSEMBLY - A seal comprising a high temperature silicone adhesive sealant layer; a first non-ceramic layer mounted to the silicone adhesive sealant layer; a first expanded metal layer mounted to the first non-ceramic layer; a first silicone cloth layer mounted to the first expanded metal layer; a metal reinforcement layer mounted to the first silicone cloth layer to provide structural integrity without the use of ceramic materials; a second expanded metal layer mounted to the metal reinforcement layer; a second non-ceramic layer mounted to the second expanded metal layer; a turbine mesh layer mounted to the second non-ceramic layer; a second silicone cloth layer mounted to the turbine mesh layer; a sealing castable applied over the second silicone cloth layer to provide a covering; and, a high temperature bonding adhesive disposed between each layer following the first non-ceramic layer to bind the layers together. | 05-09-2013 |
| 20150367463 | COMPRESSOR DIAGNOSTIC AND PROTECTION SYSTEM AND METHOD - A method is provided that includes installing a compressor in a refrigeration system and determining a condenser temperature difference using processing circuitry. The method also includes checking for an overcharge condition or a condenser fan blockage condition when the condenser temperature difference is greater than a high condenser temperature difference value. The method also includes determining a discharge superheat temperature using the processing circuitry and checking for the overcharge condition or the condenser fan blockage condition when the condenser temperature difference is less than the high condenser temperature difference value and the discharge superheat temperature is less than a low discharge superheat temperature value. The method also includes checking for an undercharge condition or an evaporator fan blockage condition when the condenser temperature difference is less than the high condenser temperature difference value and the discharge superheat temperature is greater than a high discharge superheat temperature value. The method also includes completing installation of the compressor when the condenser temperature difference is between the high condenser temperature difference value and the low condenser temperature difference value and the discharge superheat is between the high discharge superheat temperature value and the low discharge superheat temperature value. | 12-24-2015 |
| 20160003509 | COUPLER AND METHODS OF USE FOR ASSESSMENT OF REFRIGERATION SYSTEMS - A system is provided for servicing a refrigeration system. The system includes a coupler and user equipment in electronic communication with the coupler. The coupler includes an inlet engageable with a portion of a refrigeration system, and at least one sensor configured to measure in situ at least one physical parameter of the refrigeration system. A method of assessing a condition of a refrigeration system is provided. The method involves providing a coupler to a portion of a refrigeration system; allowing fluid communication between the refrigeration system and at least one sensor configured to measure in situ at least one physical parameter of the refrigeration system; communicating the at least one physical parameter to user equipment; and assessing a condition of the refrigeration system based on at least one communicated physical parameter. | 01-07-2016 |
| 20160033216 | METHOD OF SERVICING MODULAR PLATE AND SHELL HEAT EXCHANGER - A modular plate and shell heat exchanger in which welded pairs of heat transfer plates are placed in the shell in order to transfer heat from a secondary fluid to a primary fluid. The heat transfer plates are removably connected using gaskets to header pipes which are connected to a primary fluid inlet and a primary fluid outlet nozzle. The header pipes are supported by a structure which rests on an internal track which is attached to the shell and facilitates removal of the heat transfer plates. The modular plate and shell heat exchanger has a removable head integral to the shell for removal of the heat transfer plates for inspection and replacement. | 02-04-2016 |
