I wanted an iPhone bad, and finally gave up waiting for it to come to Verizon. Got a Droid and am very happy with it.

The screen is awesome – bigger than an iPhone’s and more dense with pixels, so images are very sharp. The colors are great, and the screen is nice and bright. I had a Samsung Rogue for about 10 days. Everyone raved about the Rogue’s screen. The Droid’s screen blows it away. The touch screen is accurate and responsive, and very intuitive to use. About as good as the iPhone but much better than every other touchscreen phone I’ve tried and better than a few cameras with touchscreen controls.

The Droid’s display is sharp enough and wide enough to view most web pages – including those not specifically formatted for mobile phone browsers. Because of this screen and because of the way that the Android OS implements the browser, surfing the internet is very easy, intuitive, and pleasant. Much less horizontal scrolling/panning. Much better than most phones I’ve tried, including the Samsung Rogue and Blackberry. The iPhone’s browser is also a pleasure to use, but the Droid’s screen is better at displaying full web pages.

Email is very well-implemented in the Droid. I was already a Gmail and Google calendar user before getting my Droid, and the level of integration is amazing, thanks to the Google Android OS. But any Android phone will also handle most other popular webmail, like hotmail, and also can sync with Microsoft Outlook and similar programs.

The Droid’s call quality is good, and the speakerphone is loud and clear enough to be useful in most places. I get slightly better reception with the Droid than with my previous Verizon phones, especially in places with poor network coverage.

The Droid’s built-in Facebook app is good, but is not as full-featured as the iPhone’s FB app, which has been around longer and had more time to be improved. Yet, the Droid’s FB app is as good as or better than FB access I’ve seen on most smartphones, including Blackberry and especially the new Samsung Rogue.

One extremely cool thing is you can easily import the contact info from all your Facebook friends into the Droid’s contact manager, including their profile photo, email, phone, birthday, etc. Then, from your contact list, you can tap on any of their names and with one touch either call, email, or jump to their FB page. This is very well-implemented and easy to use, and makes the Droid’s contact manager highly useful.

The Droid has pretty good voice recognition. I can tap the microphone icon in the upper right corner of the screen and say “Starbucks” and the Droid will show a list of the nearest Starbucks – and then I can pick one and either touch the phone number and Droid will call it, or I can touch the address and Droid will show its location on a map and give me driving directions.

Droid like all Android phones has Google maps built in, including satellite view, and Droid can give you directions (from your current location or any location) just like Google maps on a computer.

What’s more, Droid has built-in GPS functionality and can give spoken directions, just like a Garmin GPS. I tried it and it works pretty well.

Loading music and photos onto the Droid is as easy as dragging and dropping files from your computer to a thumb drive. Droid’s music player is not as refined as iPod/iPhone, but it is easy to use and works great. If you have an iPod, you probably have lots of music tracks in AAC format. The Droid will play them no problem, as long as they don’t have DRM copy protection (and most don’t nowadays). The Droid also plays MP3 and other formats.

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The invention relates to twin screw extruder comprising a cylinder having twin bores therein to receive the twin screw and enclosed by a cylindrical casing, with at least one passage to allow heating or cooling fluid to flow between the cylinder and the casing.

A difficulty encountered in the heating or cooling of cylinders in twin screw extruder where the bores partially overlap, is that the portions of the cylinder which absorb the greatest quantity of heat per unit are inwardly directed wedge-shaped projections at the sides of the region where the twin bores overlap. Such wedge-shaped projections can be cooled adequately only with a large technical outlay.

In previously proposed twin screw extruder, the cylinder enclosing the twin screw is in extended form, i.e. it is constructed with two flat outer faces each extending parallel with the plane in which the axes of the twin bores lie. This cylinder, which is difficult to produce in its basic shape, has a helical groove cut into its periphery, to guide the heating or cooling fluid around the cylinder in a helical path. The cylinder is surrounded by a circular casing and the gaps between the upper and lower surfaces of the cylinder and the inner wall of the casing are filled with separate chordal segments. Such a twin screw extruder is expensive to manufacture and it is difficult to maintain a seal between the cylinder and the segments.

The invention has among its objects to provide a twin screw extruder of the above described kind wherein positive guidance of the heating or cooling fluid is obtained at relatively low manufacturing cost using favourably shaped basic components.

According to the invention there is provided a twin screw extruder comprising a cylinder having twin bores therein to receive the twin screw of the extruder and a circular casing, with at least one passage to permit heating or cooling fluid to flow between the cylinder and the casing, in which the cylinder has a generally circular outside contour with a first set of grooves and a second set of grooves forming parts of said at least one passage, extending obliquely to the longitudinal axis of the cylinder and formed in the outer surface of the cylinder, the bottom walls of the grooves extending parallel to a plane which includes the two longitudinal axes of the twin bores with the first set of grooves lying on one side of said plane, and the second set of grooves lying on the other side of said plane, the inclination of said first set of grooves to said axis being opposite to the inclination of said second set of grooves to said axis, and the inside of the casing containing spaced recesses forming further parts of said at least one passage and, except for end ones of said recesses, each connecting one end of a respective one of the grooves of the first set of grooves to one end of a respective one of the grooves of the second set of grooves.

Preferably an inlet orifice, through which the heating or cooling fluid is supplied to said at least one passage, and an outlet orifice, through which the heating or cooling fluid is exhausted from said at least one passage, are provided in respective ones of said end ones of said recesses.

With such a construction both the casing and the cylinder can be machined from circular section billets and the grooves and recesses can be cut with milling cutters in simple machining operations. The circular cylinder lies in the circular bore in the casing with a sealing action. The machining of the casing and cylinder does not pose any severe manufacturing problems.

The heating or cooling fluid is thus positively guided in said at least one passage between the cylinder and the casing in a helical path without any great outlay in manufacture.

The invention is diagrammatically illustrated by way of example in in the accompanying drawings, in which:

FIG. 1 is a cross-section through the cylinder and casing of a portion of a twin screw extruder according to the invention, taken along line I–I of FIG. 2; and

FIG. 2 is a plan view of the apparatus of FIG. 1 with the casing shown in a cross-section taken along line II–II of FIG. 1.

Referring to the drawings, a twin cylinder 3, which surrounds a twin screw (not shown) over part of its length, has a generally circular outside contour. The cylinder 3 is provided with two internal parallel cylinder bores 4 and 5 which partially overlap and form two wedge-shaped projections 6 and 7 from the inner wall of the cylinder 3.

Parallel with and above the plane in which axes 8 and 9 of the bores 4 and 5 respectively lie, grooves 11 extending obliquely to the longitudinal axis of the cylinder 3 are cut into the outer face of the cylinder 3. Parallel with and below the plane of the axes 8, 9, grooves 12, again inclined obliquely to the longitudinal axis of the cylinder 3 are cut into the outer surface of the cylinder 3. The inclination of the lower grooves 12 to the longitudinal axis of the cylinder 3 is opposite to that of the upper grooves 11. Except at the ends of the cylinder 3, each end of each upper groove 11 lies vertically above a respective end of one of the lower grooves 12.

The cylinder 3 is fitted into a circular inner bore 13 in a cylindrical casing 14. Diametrically opposed and axially offset recesses 15, 16 of an arcuate shape are provided in the inner wall of the casing 14. As can be seen from FIG. 1, each recess 15, 16 provides communication between one end of a respective one of the upper grooves 11 and one end of a respective one of the lower grooves 12. In this way the heating and cooling fluid is guided around the cylinder 3 in a helical path. An inlet port 17 for the supply of the heating or cooling fluid is provided at one end of the casing 14. An outlet port 18 for the discharge of the heating or cooling fluid is provided at the other end of the casing 14. The inlet port 17 and outlet port 18 are located in the axially outermost recess 15, 16 respectively in the casing 14.

The heating or cooling fluid flows around the cylinder 3 while the wall thickness of the cylinder 3 remains approximately constant. With the apparatus illustrated the heating or cooling fluid can effectively heat or cool the wedge-shaped projections 6 and 7 from the inner wall of the cylinder 3.

The Crown-Tightenix watch tool from Japan acquired the patent in Switzerland (March 10, 2010) ” The Crown-Tightenix ” is crown tightening & watch winding tool from Japan and acquired the patent in Switzerland in October 2009. “The Crown-Tightenix ” is a watch tool that Mr. Motonobu Ohyabu, President of Yuubido Japan Corporation, a watch retail store in Aichi Prefecture, devised and designed. Mr. Ohyabu had seen often that their customers had difficulty to wind watches and tightening crown, and crowns of some watches were not tightened enough. Moreover he knows that sales representatives had difficulty and hard time to adjust and wind watches. Actually crowns of some ladies models are small and not easy to operate. Since he knows such actual facts very well, he spent 7 years to produce this “The Crown-Tightenix”. He produced “The Crown-Tightenix” with his wishes that owners could use their wrist watches for many years and they could avoid to bear repair expense preventing from water infiltration into movement. By using The Crown-Tightenix, enhance the waterproof screw-in crown watches, avoid clearance gap of winding screw which cause water infiltration into movement and easy self-winding. This is very useful and efficient watch tool for wristwatch owners and watch sales representatives. “The Crown-Tightenx” acquired 2 patents in Japan in 2004 and 2005, and one in the United States in 2004, and also, one in Switzerland in October 2009. Easy to wind watches by using “The …

This video shows the top 20 skylines in the world. The ranking is taken from homepages.ipact.nl PLEASE READ THIS BEFORE YOU RANT ABOUT THE RANKING!!! Explaining the ranking system: The value of each building in a city is calculated by x-90, x beeing the hight in metres. Observation towers and such are only counted with half their hight (example: CN Tower). The combined value of each building in the city determines the points. Example: Sears Tower is 442 m high, it’s value is 442-90=352 points! Special credit to Egbert Gramsbergen, the original creator of the list. tags: top skylines world world’s skyline skyscraper skyscrapers hongkong hong kong new york city newyork dubai USA China Kina UAE united arab emirates burj dubai burj al arab 2ifc international finance centre the bank of emipire state building chrysler building world trade centre 9/11 cities chinese american era construction boom real estate realestate tall tallest best coolest cool nightshots night shots high highest ranking 51 50 10 20 25 3 Chicago Shanghai Pudong Sears tower petronas twin towers Toronto Bangkok Seoul Manila makati mumbai