A method for synthesizing generally flat freestanding diamond, comprising the steps of providing a deposition chamber, providing a deposition surface in said deposition chamber, said deposition surface having a concave contour, directing a plasma toward said concave deposition surface, the plasma including hydrogen and a hydrocarbon, such that synthetic diamond is formed on said concave deposition...

A piston assembly operable within a fluid bathed cylinder wall, comprising a piston body (10) having at least one annular land (36) adapted to be in close-fitting relationship to the cylinder wall (37) an abradable coating (15) tenaciously adhered to said at least the one land (36) effective to create and sustain substantially zero clearance with the fluid bathed cylinder wall and a heat sink in t...

Erythromycin A derivativ es represented by the general formula wherein R<1> is a group of the formula R<7>CH2- (wherein R<7> is a hydrogen group or a lower alkyl group) or a group of the formula R<8>O- (wherein R<8> is a lower alkyl group), R<2> is R<8>, a cycloalkyl group, a phenyl group or an aralkyl group, or R<2> and R7 together form an alkylene group, R<3> is a hydrogen atom, a lower a...

Novel single-source volatile precursor compounds are disclosed, having the general formula (RO)3Si-O-Ti(OR)3 where each of the six R moieties in the C3 to C6 alkyl, preferably all being tert-butyl. The precursor compounds are suitable for use in dissociation methods, such as sol-gel and chemical vapor deposition, for preparing powders and films of stoichiometric SiO2.TiO2. Optical films to provide...

A method and apparatus is provided for transmitting spread spectrum signals. The transmitter receives data bits at a particular rate. Subsequently, the transmitter encodes the received data bits at a predetermined encoding rate into data symbols. Subsequently, the transmitter derives predetermined length orthogonal codes from the data symbols. The transmitter accommodates variable received data bi...

PCT No. PCT/FI87/00042 Sec. 371 Date Sep. 16, 1987 Sec. 102(e) Date Sep. 16, 1987 PCT Filed Mar. 24, 1987 PCT Pub. No. WO87/05844 PCT Pub. Date Oct. 8, 1987.The invention relates to an apparatus to be used when welding pipes together. The apparatus comprises a bellows structure (4, 5) for shielding the weld joint area by internal contact with the pipe ends on both sides of the weld joint (3). When...

The rotating and alternating piston machine is an alternating or free piston machine in which the pistons effect a rotating and alternating movement. Main characteristics: 1) the use of rotation or alternation/rotation, for example in order to control the ports provided in the cylinder walls of two- and four-stroke engines, pumps and compressors; 2) simple conversion of rotating and alternating mo...

The rotating and alternating piston machine is an alternating or free piston machine in which the pistons effect a rotating and alternating movement. Main characteristics: 1) the use of rotation or alternation/rotation, for example in order to control the ports provided in the cylinder walls of two- and four-stroke engines, pumps and compressors; 2) simple conversion of rotating and alternating mo...

Méthode de pompage par échange direct d'énergie au cours de laquelle un fluide moteur est envoyé sous forme d'un ou plusieurs jets par intermittence,vers un fluide primaire. Dispositif de pompage comprenant une pièce creuse et une pièce de distribution munie chacune d'orifices (Oi) et (Ei). Une pièce mobile en rotation est interposée entre les deux pièces creuses et de distribution, elle est munie...

Clothing of the use and throw-away type of non-woven fabric 1 comprising approximately 60% of viscose fibre and approximately 40% of polyester fibre combined with an acrylic binder, to which a dry active product emulsified with an adhesive applied to the reverse of the clothing covered with a film 3 which can be removed at the time of use is added.

Device for ordering products 1, in which a first and a second conveyor 7, 8 with pockets, placed alongside each other and able to be moved in steps and in phase with each other in a first direction 6a, are able to receive, selectively and in succession, products 3 advanced in a second direction 16, essentially at right angles to the first direction 6a, by an input conveyor 15 and to order the said...

Hideaway stop for locking in the open position the movable part 4 of a window or door frame. It comprises a bar 10, hinged to one end of the jamb 5 of the frame 6 or fixed portion of the window frame, and an appendix 11 hinged to the other end of said bar 10. The free end of said appendix 11 constitutes an adjustable prop 12, having a head 13 which can engage with a seat 31 of an engagement block ...

Lubricants for thermoplastics, consisting of esters of "pure" stearic acid of very high purity, compositions containing the said lubricants and their use in the processing of plastics are described.

A new alloy having a high concentration of gold with which tantalum is associated in an amount in excess of 2%, obtained by first preparing a parent alloy in order to obtain a phase consisting of a complex Pd-Cu-Ta (palladium, copper, tantalum) complex finely dispersed in a metal in a predominant percentage comprising Au-Pt-In- Ag (Gold, Platinum, Indium, Silver) and obtaining a phase with crystal...

The cyclization and hydrolysis of certain ACE inhibitors is minimized when they are formulated with a stabilizer and at least one lubricant and/or excipient.

The oxidation - and color-stability of certain ACE inhibitors is optimized when they are formulated with a stabilizer and at least one lubricant and/or excipient.

The invention relates to a process for guiding sheets or strips to be butt-welded together and to an apparatus with means for conveying and guiding sheets or strips to be butt-welded together. The sheets or strips, lying laterally next to one another, each with one of its side edges against a guide surface lying in the same vertical plane, are brought into contact without gaps in the same horizont...

A cordless telephone arranged for operation in a frequency hopping system includes multiple portable units configured for operation with a base unit and with each other by having the base unit pseudo randomly select from a plurality of communication channels available in the frequency hopping system a different starting channel for each one of the portable units. Each portable unit then provides i...

An apparatus and method are provided for enhancing fatigue and stress resistance properties of a subterranean well drill pipe string section by providing a helical groove near the pipe to tool joint weld. Stresses in and around the top portion of the pipe are redistributed to and absorbed by the helical groove region of the drill pipe string section, which has a relatively greater resistance to fa...

A label (10) for an electrochemical cell with a condition tester for the cell integrated with the label to form a label/tester composite (11) is disclosed. The label/tester composite has a thermochromic material (12) in thermal contact with an electrically conductive material (40). A substructure containing a cured conductive material and preferably also a thermochromic material is formed on a rel...