Patent application number | Description | Published |
20080206060 | Forming firtree profiles - A firtree profile, for example on a component of a gas turbine engine, is formed in a two-stage process. In one stage, an intermediate profile is formed, for example by a mechanical machining operation such as grinding. Subsequently, in a second stage, loaded flanks | 08-28-2008 |
20090146384 | Multi-layer gasket or seal member - A gasket or seal member constructed of elastomeric material has at least one slot extending lengthwise of the member and across its thickness at an oblique angle to the sealing faces. There may be a plurality of slots spaced apart across the width of the member. In a preferred form of the invention multiple, parallel slots are formed at an oblique angle to the seal faces of the member forming branchiate-like layers of gasket material, in which each of the layers partially overlays at least one other layer. | 06-11-2009 |
20090162136 | Fastener assembly - The invention is related to a fastener assembly of the kind used to secure a gas turbine engine rotor disc assembly on a shaft in a situation which otherwise would required the use of a trapped nut. It thereby removes a design constraint limiting bore diameter of the disc assembly to permit access to a securing. nut on the shaft, and avoids the use of a trapped nut. One of the rotors hubs is adapted to be mounted on the shaft and the securing nut is engaged with a thread on the shaft to trap the hub. In the improvement of the invention the hub is provided with an axial keyway through which the securing nut is passed into the limited access space. Once the shaft is engaged with the hub the nut is then engaged with the thread on the shaft and tightened using a special tool extending through the centre of the shaft. The tool is withdrawn after use. The nut may be undone and retrieved in an opposite operation. | 06-25-2009 |
20100025493 | Actuator arrangement - An actuator arrangement for moving a first component relative to a second component, the arrangement comprising: an actuator chamber for receiving a fluid under pressure, a side wall of the chamber being fixed relative to the first component; an actuating element fixed relative to the second component and located inside the chamber for sliding movement along the chamber, relative to the side-wall; and a sealing element which provides a corresponding sliding seal between the actuating element and the sidewall for maintaining an actuating fluid pressure differential across the actuating element thereby to drive the actuating element relative to said side-wall, under said fluid pressure differential, for driving said relative movement of the first and second components; wherein the arrangement further comprises an external side-wall brace connected to the second component for corresponding movement with the actuating element along the outside of the sidewall, the brace being slidably or rollably braced against the outside of the side-wall close to the sealing element thereby to provide respective local reinforcement of the side-wall at or near the sliding seal, in accordance with the position of the actuating element. | 02-04-2010 |
Patent application number | Description | Published |
20100320414 | CHILLER REFRIGERANTS - Disclosed is a nonflammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition, a second component that is selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 70% isobutane in an amount of from 1% to 4% by weight and up to 5% by weight based on the weight of the composition of another fluorohydrocarbon. The composition optionally may further include at least one additive, lubricant or combination thereof. | 12-23-2010 |
20120273712 | CHILLER REFRIGERANTS - Disclosed is a nonflammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition, a second component that is selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 70% isobutane in an amount of from 1% to 4% by weight and up to 5% by weight based on the weight of the composition of another flurohydrocarbon. The composition optionally may further include at least one additive, lubricant or combination thereof. | 11-01-2012 |
Patent application number | Description | Published |
20080265204 | REFRIGERANT COMPOSITIONS - Disclosed is a non-flammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition; a second component selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight based on the weight of the composition; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 80% isobutane in an amount of from 3% to 4% by weight of the composition. Optionally, the composition may include at least one lubricant, at least one additive or combinations thereof. | 10-30-2008 |
20080272330 | REFRIGERANT COMPOSITIONS - Disclosed is a nonflammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition, a second component that is selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 70% isobutane in an amount of from 1% to 4% by weight and up to 5% by weight based on the weight of the composition of another fluorohydrocarbon. The composition optionally may further include at least one additive, lubricant or combination thereof. | 11-06-2008 |
20090127498 | Refrigerent compositions - Disclosed is a non-flammable refrigerant composition consisting of pentafluoroethane in an amount from 62-70% based on the weight of the composition selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, or a mixture thereof in an amount from 26 to 36% by weight based on the weight of the composition and mixture of dimethyether and n-butane in an amount of from 1-4% by weight based on the weight of the composition. Optionally, the composition may include at least one lubricant, at least one additive or combinations thereof. | 05-21-2009 |
20100011791 | R422D HEAT TRANSFER SYSTEMS AND R22 SYSTEMS RETROFITTED WITH R422D - A heat transfer system capable of being coupled to
| 01-21-2010 |
20100320414 | CHILLER REFRIGERANTS - Disclosed is a nonflammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition, a second component that is selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 70% isobutane in an amount of from 1% to 4% by weight and up to 5% by weight based on the weight of the composition of another fluorohydrocarbon. The composition optionally may further include at least one additive, lubricant or combination thereof. | 12-23-2010 |