An acoustic method and apparatus for investigating an earth formation penetrated by a borehole are described. Acoustic transducers are mounted on a tool to accurately determine the distance between a segment of the tool and the wall of the borehole. The acoustic transducers are positioned in such manner that the stand-off distance between individual resistivity measuring electrodes in an array, wh...

PURPOSE:To reduce operating power of a device, by providing a brake control valve, holdable with pressure in accordance with clutch operation, in one channel, and providing an automatic valve, automatically holdable with pressure in accordance with operation of said control valve, in the other channel. CONSTITUTION:One fluid pressure generating chamber of a master cylinder 2 is connected to brake ...

PURPOSE:To perform stable running and transmit proper driving force by setting up a thin disk body provided with spline teeth on the outer circumference and another thin disk body provided with the spline teeth on the inner circumference both shiftably in an alternate manner. CONSTITUTION:A thin disk body 10 provided with spline teeth on the outer circumference and another thin disk 16 provided th...

PURPOSE:To engage a lockup clutch a little earlier and secure a yet more powerful accelerating characteristic by changing a car speed, where the lockup clutch is made to come into a state of being engaged, to be somewhat lowish when accelerator opening and its increase rate are more than the specified value. CONSTITUTION:An accelerator opening detecting means and an accelerator opening increase ra...

PURPOSE:To prevent a short circuit even in the case of over-discharge by causing sulfuric acid absorption and extrication substances to be contained in a pole plate or separator with the substance having a nature of sulfuric acid extrication speed faster than sulfuric acid supply speed required in normal discharge time. CONSTITUTION:A pole plate or a separator is made to contain sulfuric acid abso...

PURPOSE:To enhance productivity and improve vibration-proof structure by bringing a separator surrounding at least either of the positive and negative poles and having an opening near its bottom into contact with an adhesive resin fluidized on the inner bottom of a battery case and then solidifying the adhesive. CONSTITUTION:After bringing a cluster of pole plates each provided with a separator 4 ...

A split tire mold having a tread ring in which provision is made for venting air circumferentially across the inner surface of the tread ring so that the air escapes from the parting line of the mold halves, dispenses with widely used, conventional, radially protruding vent stubs. The air is vented through "butterfly-shaped" or "double-wedge-shaped" arch-vents which provide passage for trapped air...

Process for the assembly of groups of plates for batteries, with continuous separator of microporous material obtained from a flat strip suitably folded to create a sequence of parallel horizontal channels in which plates of opposite polarity are inserted. The plates are fed by special distributors and inserted side by side in the required number in the single channels of the separator, forming co...

A bistable electronically controlled transducer having an armature (27) reciprocable between first and second positions is disclosed including either a stressed spring (11, 12) or compressed air within a closed chamber in the transducer for causing the armature to move, and a permanent magnet latching arrangement (5, 6) for holding the armature in either one of the positions. An electromagnetic ar...

Concerne un produit de fibres non tissé, dans lequel la matière des fibres se compose, en tout ou en partie, de fibres capables de former des liaisons avec des fibres naturelles ou articielles du meme type ou d'un type différent, et dans lequel les fibres capables de former des liaisons sont des fibres de carbamate de cellulose.; PCT No. PCT/FI87/00176 Sec. 371 Date Aug. 11, 1988 Sec. 102(e) Date ...

The process described has at least one solvent selected from the group comprising CO2, propane, butane, pentane, petroleum ether and water at a temperature T of T > Tk(Tk = critical temperature) and a pressure p of p > pk (pk = critical pressure). The pressure is < 400 bar. A temperature profile exists along the extraction column, being the temperature in the stripping section of the column set so...

PURPOSE:To reduce the electric power consumption of a heating means, by stopping the operation of the heating means of an ice making device for a given period of time after finishing the operation of the heating means for a predetermined period of time, determined by a specified period. CONSTITUTION:After the repeated ON/OFF operation of a heater 11 is effected, the output of an integrating timer ...

A process for obtaining transparencies suitable for the effective transfer of developed images from a donor sheet which comprises (1) providing a transparent substrate, and (2) applying a coating thereto selected from the group consisting of poly(vinyl ethers), poly(acrylic acid esters), poly(methacrylic acid esters), poly(vinylmethyl ketone), poly(vinylacetate) and poly(vinylbutyral).

Flexible polyester film is coated with a silicone release coating by applying and curing a solventless composition which comprises a polydiorganosiloxane having solely in its terminal units hydroxyl or alkenyl groups, an organohydrogen siloxane crosslinker and a catalyst which is preferably a Pt compound. The ratio of SiH groups over the hydroxyl or alkenyl groups is at least 2/1. The release coat...

A method of an unmanned vehicle comprises the steps of placing a certain number of ground marks each of which comprises a plurality of line segments on a passage of the vehicle measuring amount of movement of the vehicle between the adjacent line segments when the vehicle moves across each of the ground marks, and obtaining a relative positional relation between the ground mark and the vehicle wit...

This invention describes novel molded flexible polyurethane foam surfactants which can be used in foam having high concentrations of reinforcing graft copolymer solids. The invention also describes an improved process for making these foams using the novel surfactants.

A zirconia ceramic composition consisting essentially of ZrO2 containing not more than 5.0 mol% Y2O3 as a stabilizer and further containing aluminum and magnesium compounds in a combined amount of from 1 to 30 weight% expressed in terms of Al2O3 and MgO relative to the amount of ZrO2. From 0.5 to 12 mol% CeO2; may also be present.

A process wherein organofunctional polysiloxanes of the formula in which R<1> is methyl or the radical R<2>, R<2> is chloropropyl, n has a value of from 0 to 12, m has a value of from 1 to 8 if R<1> is methyl and a value of from 0 to 6 if R<1> is chloropropyl, are added to the reaction batch in amounts of from 0.01 to 2.0 % by weight, based on polyols. The organofunctional poly...

The instant invention deals with the alteration of solid synthetic polymers to improve the overall functional performance of the polymers. The invention also deals with a fast, clean, efficient, inexpensive method of altering the surface of textiles. The method comprises contacting a textile with a swelling agent and a base and heating to alter the textile and then acidifying the treating bath and...

This invention describes molded flexible polyurethane foam surfactants which can be used in foam having high concentrations of reinforcing graft copolymer solids.