OMPI – Búsqueda en las colecciones de patentes nacionales e internacionales

1.1114249Energy recovering type current-limiting circuit for discharge working machine or high-energy oscillatory circuit

CN - 03.01.1996

Clasificación Internacional B23H 1/02 Nº de solicitud 94106395.X Solicitante Hu Longjiang Inventor/a Hu Longjiang

The energy recovery type current limit circuit for discharge machining machine or high-energy oscillating circuit is arranged between discharge electrode or power supply and control transistor and includes an inductance coil connected to a capacitor and two transistors, and in turn to two outputs of voltage-holder circuit while to oscillation energy recovery circuit whose two outputs are connected to power supply. Its advantages include low cost, simple circuit and low energy consumption.

2.1114239Pre-reduction type ammonia synthesis catalyst and preparing process

CN - 03.01.1996

Clasificación Internacional B01J 23/74 Nº de solicitud 94106145.0 Solicitante Zhejiang Polytechnic Univ. Inventor/a Xu Ruyu

The catalyst for ammonia synthesis has porous iron that is obtained by reduction of ferrous oxide or wustite iron. Its main component is metal iron. Its assistant is alumina, potassium oxide, calcium oxide and other oxides. The catalyst features high activity, high temp. and poison resistance, easily being activated, early production of ammonia and low cost.

3.1140487Collar for clamping tubular part

CN - 15.01.1997

Clasificación Internacional F16L 33/02 Nº de solicitud 95191580.0 Solicitante Lionel Calmettes Inventor/a Lionel Calmettes

A clamping collar includes a tightener connected to two ends of a band which has its ends positioned on an arcuate screen. Clamping is achieved symmetrically with respect to a diametrical plane of the collar so that the portions of the collar which lie in the diametrical plane do not move relative to the part to be clamped.

4.1140521QAM constellation which is robust in presence of phase noise, encoder and decoder for this constellation

CN - 15.01.1997

Clasificación Internacional H04L 27/34 Nº de solicitud 95191591.6 Solicitante Philips Electronics N.V. Inventor/a M Ghosh

A circularly symmetric QAM constellation reduces phase noise. Points of the constellation are situated on concentric circles. The constellation may be encoded and decoded either coherently or noncoherently. A differential encoder for the constellation does not operate by straight subtraction. A differential decoder for the constellation can use an estimated metric to recover the original signal.

5.1140260Method and apparatus for measuring change in capacitance values in dual capacitors

CN - 15.01.1997

Clasificación Internacional G01B 7/00 Nº de solicitud 96100299.9 Solicitante Elsag International N.V. Inventor/a Brian D. Hemphill

A method and apparatus for calculating a ratio, R, having a first capacitance value, C1, in inverse relation to a second capacitance value, C2, where C1 and C2 are the capacitance values of a first capacitor and a second capacitor respectively. The first and second capacitors each have an independent electrode and share a common electrode. An AC voltage is applied to the common electrode producing first and second AC current signals at the two independent electrodes. A dual switched-capacitor integrated circuit and two current to frequency converters respectively convert the first and second AC current signals to first and second frequency signals having values f1 and f2. A microprocessor receives the first and second frequency signals and calculates R from f1 and f2.

6.1140242Fluid free damper

CN - 15.01.1997

Clasificación Internacional F16F 7/00 Nº de solicitud 96102325.2 Solicitante Illinois Tool Works Inc. Inventor/a Donald L. Van Erden

Disclosed is a damper which has no working fluid. The damper is provided with a first element and a second element which can move relatively to each other, and an approximately solid meshing component which is arranged between the first and the second elements to provide resistance; the resistance is basically constant or increases along with the speed between the first and second elements.

7.1140237Piston-type compressor in reciprocating motion

CN - 15.01.1997

Clasificación Internacional F04B 39/12 Nº de solicitud 96104265.6 Solicitante K. K. Toyoda Jidoshokki Seisakusho Inventor/a Hiromi Michiyuki

A compressor includes a drive shaft rotatably supported in the housing body. A drive plate is mounted on the drive shaft. Cylinder bores are defined in the housing body. Pistons are operably coupled to the drive plate and are disposed in the cylinder bores. The drive plate converts rotation of the drive shaft to reciprocating movement of the pistons in the cylinder bores. Each piston compresses gas supplied from a suction chamber to the associated cylinder bore and discharges the compressed gas to a discharge chamber. Force to minimize displacement of the drive shaft in the axial direction thereof adjusts in accordance with at least one of pressure in the discharge chamber and a rotation speed of the drive shaft.

8.1140235Method for testing fuel flow transported via nozzle of diesel-fuel jet pump for diesel engine

CN - 15.01.1997

Clasificación Internacional F02M 65/00 Nº de solicitud 96106012.3 Solicitante Robert Bosch GmbH Inventor/a Herbert Hoeckel

The present invention relates to a method for determining the fuel quantity fed by an injection pump to fuel injectors in a diesel engine. Adopting the following project can easily calculate the corresponding quantity of fuel, fed to a display. The characteristic pressure curves are normalised and the surface integral of normalised curve is calculated, with the actual fuel quantity calculated using a proportionality constant. The method of the present invention and corresponding apparatus can be used to determine the fuel quantity or as a check for at least one fuel injection channel.

9.1140185Compositions of poly (phenylene ether) and polyamide resins, which exhibit improved melt strength

CN - 15.01.1997

Clasificación Internacional C08L 77/00 Nº de solicitud 96106910.4 Solicitante General Electric Co. Inventor/a Edward Norman Peters

Thermoplastic compositions comprising blends of poly(phenylene ether) resins and polyamide resins with a melt strength enhancing amount of a multi-valent metal salt are described herein. The compositions may further comprise at least one flow promoter, impact modifier and/or at least one reinforcing filler.

10.1141061Thrombopoietin

CN - 22.01.1997

Clasificación Internacional C07K 14/52 Nº de solicitud 94194751.3 Solicitante Genentech Inc. Inventor/a D. L. Eaton

Isolated thrombopoietin (TPO), isolated DNA encoding TPO, and recombinant or synthetic methods of preparing and purifying TPO are disclosed. Various forms of TPO are shown to influence the replication, differentiation or maturation of blood cells, especially megakaryocytes and megakaryocyte progenitor cells. Accordingly, these compounds may be used for treatment of thrombocytopenia.

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