PURPOSE:To prevent a changeover shock of a clutch, by both controlling a connection speed of the clutch, changed through hydraulic operation, in accordance with the operating condition of an engine and regulating the speed of the clutch at its control so as to remove an influence of the viscosity of oil. CONSTITUTION:The captioned speed change gear has two input shafts 2, 3 connected to an engine ...

PURPOSE:To sustain the durability of gears, bushings, etc. and to restrain the resistance in traction of a trailer from increasing, by providing an electromagnetically driven or wheel-driven external pump so that oil circulates through a hydraulic control device even during trailing travel, to avoid floating drive wheels. CONSTITUTION:When an automatic transmission vehicle is used as a trailer, an...

PURPOSE:To automatically and directly control the backward speed of a vehicle at a value below a predetermined value with the use of a simple device, by providing a cylinder device which drives a pump for discharging oil at a flow rate corresponding to the speed of the vehicle only during backward travel, and which actuates at a flow rate above a predetermined value to control wheels. CONSTITUTION...

PURPOSE:To keep off any operating failure in a brake due to a shuttle valve, by omitting the shuttle valve having so far been set up in a braking circuit of a working vehicle. CONSTITUTION:Three input ports 32a-32c are installed in a working brake valve 32. In addition, in this brake valve, there are provided with a first output port 32d, which interconnects the first input port 32a among these in...

PURPOSE:To enhance the driving maneuverability of a saddle riding type vehicle by operating a differential limiting clutch by the discharge oil pressure of a pump which is driven in response to the relative rotation of two transmission parts so that the differential limiting function is developed when the relative number or revolutions exceed a prescribed value. CONSTITUTION:A differential limitin...

PURPOSE:To enhance the driving maneuverability by operating a differential limiting clutch by the oil pressure of a pump which is driven in response to the relative rotation of two transmission parts so that the differential limiting clutch can not be operated when a car makes a turning run at an extremely low speed. CONSTITUTION:A gear pump 27 is provided between a carrier 13a and a disk part 26 ...

PURPOSE:To enable the creep control in compliance with an operator's request by providing a manual switch which performs the ON-OFF control of fluid pressure between an actuator controlling clutch elements and a creep control fluid pressure generating means. CONSTITUTION:The second oil pressure chamber 91 which controls clutch elements is connected to a creep control oil pressure generating circui...

An automatically controlled vehicle eg a bulldozer, mower or sprinkler truck has a distance sensor for detecting the vehicle running distance, an orientation sensor 5 for detecting the running direction thereof, and a processing unit for teaching the running course of, one travel of the vehicle by sampling the running direction detected by the orientation sensor every predetermined running distanc...

A polyester film especially suitable for use as the base film for magnetic recording media provided with excellent slipperiness, flatness, slidability and durability can be manufactured by endowing a polyester film with surface conditions represented by a formula Ra >/= 2 x 10<-4>.H2 + 0.008, wherein Ra is the average roughness ( mu m) and H2 is the number of the secondary interference fringes mea...

Ski brake equipped with two pivoting braking elements, each comprising a braking runner, an axis of articulation and a manoeuvring pedal. The two braking elements 28, 30 are articulated on the rotating support 24 of the heelpiece 12. Each element 28, 30 is shaped as a hairpin with elastic branches 36, 42, the shorter branch 36 carrying the axis 38 of articulation housed in a bearing 40 of the cent...

DNA strand having an ability in biotechnological production of alpha -acetolactate decarboxylase is disclosed. The DNA strand is characterized in that it has a nucleotide sequence coding for a polypeptide whose amino acid sequence is substantially from A to B of Fig. 1 and which has alpha -acetolactate decarboxylase activity. Also disclosed is a yeast which belongs to Saccharomyces cerevisiae an...

The present invention relates to an enclosure member consisting essentially of solid, non-aromatic polymers that have a linear carbon to carbon backbone structure and have a plurality of free hydrogen atoms attached to the carbon atoms with a permeability to wet and dry solvents and fuels of less than 1/50, of the permeability of untreated enclosure members having a thickness of 1 mm, a portion of...

An optical information processor comprising a semiconductor laser device which has a rectangular light emitting region, a disk, and an optical system which includes a prism for converting a non-circular beam emergent from the laser device into a circular beam, the circular beam being projected onto the disk by the optical system thereby to record or play back predetermined information.

Lightweight, fireproof, insulating material with good mechanical strength properties, obtained from expanded phenol-formaldehyde resin. A fibrous and absorbent granulate such as, for example, the solid part of dried and crushed maize cob is stirred with the phenol-formaldehyde resin before it is expanded, the mass obtained being polymerised according to the desired form, it being possible for the ...

An emulsion is prepared which comprises from 8 to 20 percent of a solvent (e.g. cyclohexanone), from 0.5 to 5 percent of an epoxy resin dissolved in the solvent to form a discontinuous phase, from 76 to 90 percent of a ketone precipitant as the continuous phase (e.g. acetone, methyl ethyl ketone or methyl isobutyl ketone, and an emulsifier in an amount sufficient to react stoichiometrically with t...

A brake release mechanism for a spring-loaded, normally applied vehicle brake releasable by system hydraulic pressure when the system is disabled includes a pilot-operated brake release valve for isolating the brake from the disabled system, a brake control valve disposed between the system and the brake, and a manual hydraulic pump communicating with the brake for supplying fluid pressure thereto...

L'INVENTION CONCERNE UNE POUDRE DE POLYIMIDE ET UN PROCEDE POUR SA FABRICATION.

LA TOTALITE OU UNE GRANDE PARTIE DE LA POUDRE DE POLYIMIDE COMPREND DES PARTICULES DE POLYIMIDE CONSTITUEES D'UNE CHARGE PARTICULIERE ETOU FIBREUSE ENDUITE D'UNE RESINE DE POLYIMIDE.

LE PROCEDE DE FABRICATION COMPREND LA REACTION D'UN DIANHYDRIDE D'ACIDE TETRACARBOXYLIQUE AROMATIQUE ET D'UN COMPOSE DIAMI...

LES MOLETTES 36 DE CE TREPAN TOURNENT SUR DES AXES 35 AU MOYEN DE PALIERS QUI COMPRENNENT DES COUSSINETS D'AXE 41 ET DE MOLETTE 42 TRONCONIQUES ET COMPLEMENTAIRES, AINSI QUE DES COUSSINETS DE BUTEE 45, 46 ENTOURANT UNE VIS 43. LES SURFACES DE PORTEE DES COUSSINETS 41, 42, 45, 46 SONT FAITES DE DIAMANT POLYCRISTALLIN FRITTE OU INCORPORE DANS UNE MATRICE METALLIQUE ET FORMENT DES SURFACES CONTINU...