Now showing items 1-6 of 6
(United States Patent and Trademark Office, 1994-05-24)
Means are provided for supplying a liquid surfactant solution, for supplying a gas under pressure, for mixing the liquid surfactant solution and the pressurized gas to form a liquid coarse dispersion of relatively large ...
Trellis support system
(United States Patent and Trademark Office, 1994-12-20)
A trellis system which can be used with raspberry and other fruit production includes a plurality of structural units (36) which are essentially two dimensional in shape to allow for flat packing and shipping. Trellis wires ...
Active control of aircraft engine inlet noise using compact sound sources and distributed error sensors
(United States Patent and Trademark Office, 1994-10-11)
An active noise control system using a compact sound source is effective to reduce aircraft engine duct noise. The fan noise from a turbofan engine is controlled using an adaptive filtered-x LMS algorithm. Single multi ...
Carbonate polymers containing ethenyl aryl moieties
(United States Patent and Trademark Office, 1994-11-08)
There are disclosed carbonate polymers having ethenyl aryl moieties. Such carbonate polymers are prepared from one or more multi-hydric compounds and have an average degree of polymerization of at least about 1 based on ...
Fine powders of ketone-containing aromatic polymers and process of manufacture
(United States Patent and Trademark Office, 1994-10-18)
Fine particles of semi-crystalline ketone-containing aromatic polymers (PEEK, PEKK, etc.) are produced by controlling the rate and conditions of hydrolysis of an amorphous polyarylketimine intermediate. The choice of acid ...
Fused biconical taper fiber optic coupler station and fabrication techniques
(United States Patent and Trademark Office, 1994-08-16)
The fibers are bound together about 1 cm apart. An oxy-propane torch is used to heat the fibers so that they fuse together. At the same time, the two relatively movable translational stages to which the fibers are clamped ...