A Doppler radar comprising a mode-locked laser oscillating in a single longitudinal mode which generates a laser beam including a plurality of electromagnetic waves of an equal frequency interval; a light transmitting telescope for directing said laser beam to a moving object; a light receiving telescope for receiving from the moving object a plurality of reflected waves subjected to Doppler shift; a photofilter for eliminating background noises from output beam of the light receiving telescope;...

An orthopedic correctional cast and the method of providing the same primarily for correction of orthopedic abnormalities, and to promote healing of damaged bone structure. The cast comprises shells or sections which are joined in such manner as to accommodate removal of the cast from and replacement of the cast on the patient. The cast is constructed of thermoplastic material, whereby its sections may be replaced by application of heat and pressure to modify the correctional pressures applied t...

Process in which the prestress effort does not exceed, in value, that of the residual effort necessary for adjustments during rolling, it being necessary only to block the prestress circuit of the device after the product has been inserted.

A method of concentrating and recovering spodumene from an aqueous pulp or slurry by conditioning the pulp with an aliphatic primary beta-amine having from seven to 15 carbon atoms (preferably as a soluble acid salt), subjecting to flotation at a pH of about 8-10 to float off the impurities, and recovering the spodumene concentrate as residue.

A modulator for producing a low-harmonic content information signal alternating between a first and a second frequency from a baseband signal alternating between a first and a second potential which comprises signal-generating means which is adapted to produce a square wave having a first frequency when the baseband signal is at the first potential and a second frequency when the baseband signal is at the second potential. Wave-shaping means receives the square wave and converts the square wave ...

Chemical treatment of surfaces is limited to selected portions of the surface by applying inorganic resists to the surface in a desired pattern. In a specific example, silicon dioxide is deposited at a low temperature on a titanium surface surrounding a platinum interconnection pattern on a silicon semiconductor slice. The silicon dioxide is patterned to expose the platinum but cover the titanium. Gold is then electroplated onto the platinum in a well-defined pattern.

An automatic equalizer with extremely fast convergence is disclosed. The weight setting procedure or algorithm used is basically an iterative operation which can be conveniently expressed by the function 1+A+A.sup.2 + . . . +A.sup.2 .sup.-1 where n = 0, 1, 2, 3, . . . , and wherein the function has n+1 terms. The tap setting algorithm results from the modification of an input signal represented by the function 1-A in an equalizer having a plurality of tap settings; subsequently converting the mo...

Service connections to gas mains are protected against external corrosive influences by covering with a protective mastic sheet material which is slit in a pattern permitting complete void-free coverage by simple and rapid hand application.

The specification discloses a tool holder, especially for receiving throw away inserts in which the tool holder is a bar-like member adapted for being clamped in a tool support member. The bar-like member has abutment elements thereon to abut the support member to locate the tool holder in a predetermined position. The regions for receiving the abutments are threaded for receiving threaded abutment screws and are adapted at their outer ends to receive pressed in abutment elements which can be gr...

Digital filter apparatus in which a set of weighting signal samples to be multiplied in the filter has values which are exactly powers of two such that the filter multiplier network may be comprised of simple signal routing circuits.