Abstract: Provided is a pipe connector having high resistance to pullout force and having high durability. The outer diameter of a nipple (20) is substantially uniform when viewed in the lengthwise direction. The end part of a hose (24) is placed over the nipple (20). A spring (32) is wound around the outer circumference of the hose (24) such that no gap occurs between adjacent wires. The shaft part of a connector main body (14) supports the nipple (20). A fastening nut (26) has an internally threaded part (28) which meshes with an externally threaded part (16) provided on the connector main body (14), and encloses the end part of the hose (24) together with the connector main body (14). The spring (32) is compressed by tightening the threaded part of the fastening nut (26). The end part of the tightly wound spring (32) rotates and the outer diameter thereof is reduced, thereby generating high fastening force. Thereafter the fastened state is maintained by frictional force.

Abstract: A unique, integrated non-obvious pathway to convert biomass to biofuels using integration of chemical processes is described herein. The present invention is simple, direct, and provides for the shortest or minimum path between biomass and transportation fuels with alcohols as intermediates, while avoiding hydrogen use during processing. Furthermore, the present invention allows the manufacture of “drop-in” substitutable fuels to be used as-is without modifications instead of conventional petroleum based fuels. The processing described herein is done under mild conditions, under relatively low pressures and temperatures, and under non-corrosive conditions obviating use of special equipment or materials.

Abstract: The press fitting for a pipe, in particular plastic pipe or plastic-metal composite pipe, is provided with a fitting body (12) which has a supporting sleeve (14) with a free end (16) and a pressing sleeve (18). The pressing sleeve (18) is held substantially concentrically with respect to the supporting sleeve (14) by means of at least one spacer element (42) arranged at the holding end (35) of said pressing sleeve. In the region of the holding end (35) of the pressing sleeve (18), the fitting body (12) has a locking depression (30) or a locking projection. At the holding end (35), the cylindrical wall (34) of the pressing sleeve (18) has at least one opening (32) through which a locking element (20) extends to the axial fitting of the pressing sleeve (18) to the fitting body (12), wherein the locking element (20) projects into the locking depression (30) of the fitting body (12) and ends in said depression, or the locking element (20) engages around or behind the locking projection of the fitting body (12).

Abstract: The invention relates to the production of a connector intended for a pipe, including an end piece which is mounted to the end of a pipe. The connector includes a sleeve covering said pipe end in order to crimp same onto the mounting end. According to the invention, the sleeve includes an annular chamber, while the armoring wires have free ends which are folded back against the outer polymer sheath, said sealed annular chamber surrounding the aforementioned pipe end. The annular chamber is then dilated with the injection of a fluid in order to maintain the free ends engaged between the outer polymer sheath and the sleeve.

Abstract: A hydraulic duct for feeding fluid at high pressure comprising a metal tube, a flexible tube of elastic material and a connector is provided with at least one main projection and a plurality of auxiliary projections, and the main projection is bounded on the side of the flexible tube by a conical surface. The flexible tube is fitted on the connector and is enclosed by an aluminium bell of a profile which can be coupled with the projections of the connector and is adapted to prevent the flexible tube from slipping off and to ensure fluid-tightness. The bell has an end rim which abuts against the conical portion of the main projection which faces towards the flexible tube.

Abstract: The invention is a system and associated connection fitting for connecting a refrigerated line or air conditioning hose to the compressor unit or component on one end and the evaporator unit or component on the other end of a residential or commercial air conditioning or refrigeration system. The hose will be of a construction, which as well as having a relatively high bursting strength, will also not allow the refrigerant to permeate through the hose and escape into the outside environment. The associated connecting fitting allows the hose to be connected to the compressor/evaporator unit. The mounting surface of the fitting will allow it to either slide over or fit into the corresponding fitting on the compressor and/or evaporator unit. The opposite end, which shall connect to the hose assembly, will have flanges and “O” rings which when clamped will provide a secure connection as well as prevent loss of refrigeration.