http://www.freshpatents.com/Pipes-and-tubular-conduits-dtnewntc138.php USPTO Class 138 - Pipes and tubular conduits en-us Tue, 18 Aug 2009 22:00:25 -0700 1000 Wednesday Thursday Friday Saturday Sunday 141 31 http://www.freshpatents.com/index.php?rss=true http://www.freshpatents.com/images/freshpatentsnav_rss.gif http://www.freshpatents.com/Plugging-device-and-method-dt20090813ptan20090199922.php Tue, 18 Aug 2009 22:00:25 -0700 A plugging device (1) includes a bladder (2) which is adapted to expand or contract upon the ingress or egress of a fluid, such as air or other type of gas or liquid. Bladder (2) can be provided in a variety of sizes to suit a diameter or cross-sectional shape... http://www.freshpatents.com/Polymer-matrix-reinforced-stiffening-element-dt20090813ptan20090199923.php Tue, 18 Aug 2009 22:00:25 -0700 A bend stiffener, and a method of producing the same, comprising an elongated cylinder of a polymer material, having a termination interface (4) on at least one end. An internal reinforcement matrix is provided comprising a first layer of a cylindrically arranged woven material (2). The material of the first... http://www.freshpatents.com/Cold-roll-forming-method-for-reducing-a-diameter-of-a-metal-pipe-and-a-metal-pipe-product-having-its-diameter-reduced-by-such-method-dt20090813ptan20090199924.php Tue, 18 Aug 2009 22:00:25 -0700 A cold roll forming method for reducing a diameter of a metal pipe and a metal pipe product having a diameter reduced by such a method are disclosed, wherein the method includes: passing a raw metal pipe through a set of pre-forming rolls so that it can be pre-formed into...