Disclosed is a process for the production of 2-amino-2-[2-(4-C.sub.2-20-alkyl-phenyl)ethyl]propane-1,3-diols.

An acidic aqueous solution containing a water soluble trivalent chromium compound is provided with a additive for improving corrosion resistance and reducing precipitation of trivalent chromium over time. A suitable additive is nitrilotris (methylene) triphosphonic acid (NTMP).

In a wheelchair training platform, a wheelchair is connected to a computer system through the training platform, and the training platform detects signals of a rotary speed and a forward direction or a reverse direction of two rear wheels of the wheelchair, and sends the signals to a computer system. The computer system reflects the foregoing rotary speed and direction to a virtual reality interactive software/game, such that the wheelchair has an interaction with the virtual reality interactive...

A method of measuring concentration of solid or liquid particulate matter in a gaseous carrier medium, particularly suitable for measuring concentration and flow rate of pulverized fuel pneumatically transported in a duct to power station boiler burners. The method includes generating a radio frequency electromagnetic wave within a duct, measuring wave parameters within a range of frequencies, including a cut-off frequency, determining the cut-off frequency from changes in wave parameters, calcu...

A stepping exerciser includes a pair of bars pivotally secured to a front portion of a base and each having an upper portion for being grasped by hands of users, and each having a lower portion coupled to a wheel to rotate and drive the wheel when the bars swing relative to the base. Two-foot supports may be used for supporting the users. A brake device is disposed close to the wheel for braking the wheel, and a switch is disposed on the upper portion of one of the bars, to actuate the brake dev...

The present invention provides for an apparatus utilising the buoyancy upthrust on a floatation member to assist displacement of a moveable article in a non-vertical direction wherein the apparatus comprises at least one pivotally mounted floatation member disposed within a fluid medium and having a displaceable actuator member integrally connected to this floatation member and the floatation member being integrally mounted on the moveable article about an appropriate pivot axis extending theref...

A method of making a part with regions of different thickness from a plate workpiece having a pair of substantially parallel plate faces. The workpiece is fitted between a surface of a die and a substantially parallel surface of a punch. The die is formed at its surface with an opening. Then the die and the punch are relatively shifted parallel to the surfaces and faces and so as to compress the workpiece parallel to its faces to extrude the workpiece transversely into the opening in the die sur...

A cushion device for treadmills includes a frame with two rails and a deck has an end pivotably connected to two respective first ends of the two rails of the frame. Two tubes are connected to the two rails of the frame and two activation rods axially extend in the two tubes and are restrained to only can spin relative to the tubes. Each of the two activation rods has a nut member threadedly connected thereto and a slide member is slidably mounted thereto. A spring is mounted to each of the two ...

A collision type identifying device is disposed in a central portion of a vehicle main body and has first deceleration detecting device (22), peak time detecting device (32), required time detecting device (34), and type identifying device (36). The deceleration detecting device (22) detects a vehicle deceleration in the longitudinal direction. The peak time detecting device (32) detects, as a first peak time (tp), a time from the excess of a preset threshold (GTH) by a waveform of the vehicle d...

Aspects of the present invention include a controller circuit for an exercise machine, where the controller circuit includes a board mounted transformer having tolerances near or below the inrush current generally present in activating one or more cooling fans. According to one embodiment, the controller circuit attempts to power on a subsequent fan after the sum of the inrush or steady state current of presently operating fan or fans, and the inrush current generally associated with powering on...