![]() ![]() Orinski Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active, expires Application number US12/610,567 Inventor William G. Google Patents Hermetically sealed feedthrough caseĭownload PDF Info Publication number US8538530B1 US8538530B1 US12/610,567 US61056709A US8538530B1 US 8538530 B1 US8538530 B1 US 8538530B1 US 61056709 A US61056709 A US 61056709A US 8538530 B1 US8538530 B1 US 8538530B1 Authority US United States Prior art keywords feedthrough ceramic flexure titanium medical device Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US8538530B1 - Hermetically sealed feedthrough case Our 6AL4V tubes are in addition made from ELI (Extra Low Interstitial gas purity) grade titanium allowing us to butt and shape seamless tubes to much tighter tolerances needed for frames such as our T640.US8538530B1 - Hermetically sealed feedthrough case Our tubes have a elongation figure of typically 15%, again very important and all tubes are Cold Worked and Stress Relieved, CWSR. 6AL2.5V titanium has a density of 4.42gr/cc, a little lighter than 3AL2.5V. Our 6AL4V parts/tubes have an immense ultimate tensile strength of 1150MPa, MPa is unit of measurements and means Megapascals, a very important figure for designers. Yes, easier to machine but hard to draw into tubes, a very complex material. At Reilly Cycleworks we use 6AL4V titanium not only for frame tubes but also for head tubes, BB sleeves, braze ons and head tubes etc as not only is it incredibly strong but is easier to machine. The 6AL4V description just means that grade 5 is an alloy of 6% aluminium and 4% vanadium, a few other trace metals and the rest titanium itself. 6AL4V is outrageously hard to draw into tube form, given it's colossal strength. Seamless 6AL4V titanium tubes are extremely rare and something I developed as a designer with a famous British tube mill back in the 1990's, production was stopped due to the mill's full order book with Boeing taking priority. Our final tubes have a elongation figure of typically 12-15%, again very important and all tubes are Cold Worked and Stress Relieved, CWSR.ĦAL4V known as grade 5 in the engineering World 3AL.2.5V titanium has a density of 4.48gr/cc, very light indeed. Our 3AL.2.5V tubes have an ultimate tensile strength of 960MPa, MPa is unit of measurements and means Megapascals, a very important figure for designers. At Reilly Cycleworks we only use 3AL.2.V titanium for frame tubes and this yields brilliant ride qualities. The 3AL2.5V description just means that grade 9 is an alloy of 3% aluminium and 2.5% vanadium, a few other trace metals and the rest titanium itself. The most widely used titanium grade for making bicycle frames as its relatively easy to work and draw into tubes and has excellent mechanical qualities. Lots of cheaper far Eastern produced frames don't have double butted tubes at all, just to save money.ģAL2.5V known as grade 9 in the engineering World. ![]() 6mm, these are figures from a Reilly frame. Typically the wall thickness of lets say a double butted top tube can be as thin as. I'll be posting a video showing the butting process soon. 89mm and thinner in the centre where there are less stresses. Main frame tubes are double butted, a process of drawing which can make the ends of the tubes thicker, usually. Our titanium frames are constructed from seamless aerospace grade tubing, selected specifically for each and every frame. ![]()
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