41results about How to "Guaranteed precise controllability" patented technology

A multi-group transmission of a motor vehicle which includes at least two transmission groups arranged in a drivetrain and a way for supporting traction force during gearshifts such that traction-force gearshifts are maintained with improved shifting comfort at comparatively low cost, little design effort and compact installation space demands. At least one electromagnetic clutch is a change-under-load unit by which, bypassing the force flow of at least one main group made as a gear-change transmission, an active connection can be formed between a driveshaft and a main transmission shaft or a transmission output shaft. During a gearshift operation, an active connection is temporarily made between a driveshaft and a main transmission shaft or a transmission output shaft by way of at least one electromagnetic clutch designed as a change-under-load unit.

A valve cone comprises a cylindrical body extending along a longitudinal axis. The body has a cylindrical surface with at least one, axially extending recess. The recess extends inside a contour line between a first end position at a first end of the cylindrical body and a second end position, which is located between the first end of the body and the opposite second end of the body. The cross-sectional area of the recess, in a plane perpendicular to its longitudinal axis, gradually decreases from a maximum value close to the said first end towards the second end position. A valve cone of the type described above is arranged in a valve. In a method for manufacturing the valve cone, the radial recesses are formed by cutting in a single axial-radial cutting motion.

An apparatus comprising a conduit clamping device with a closing mechanism for closing and opening passage of fluid or air in a flexible conduit is disclosed. The apparatus comprises a movable arm or disk that is connected to a manipulation arm or a knob; a conduit in form of a tube, that is laid flat against an abutment or protrusion; and a guide structure that constrains the movable arm or disk between the guide structure and the tube and being designed such that movement of the arm or disk will control the compression of the tube.

Disclosed is a manufacturing method of a shape-controllable flexible micro-nano column array.The manufacturing method includes: coating a hydrosol adhesion layer on the surface of a substrate, obtaining a micro-nano graphical photoresist on the hydrogel adhesion layer through a photoetching process, obtaining micro-nano graphical particles on the surface of the photoresist through a scraping-coating method, and removing the photoresist to obtain a graphical template of the micro-nano particles; coating a polymer on the surface of the substrate, and pre-heating the substrate; enabling the micro-nano particles on the surface of the graphical template to contact with and to be embedded in the polymer; lifting the graphical template to enable the polymer to be drawn to be a micro-nano column array, and heating the substrate to solidify the micro-nano column array; heating the graphical template to enable the micro-nano particles to break away from the hydrogel adhesion layer to obtain a micro-nano column array with the micro-nano particles at the top end; removing the micro-nano particles at the top end of the micro-nano column array to obtain a polymer micro-nano column array.The manufacturing method has the advantages of simple operation, low cost and short period.

An irrigation system comprising a reservoir for an irrigating liquid and a probe for arrangement in a user, wherein said probe comprises an inflatable balloon for fixing the catheter in a body cavity.

The invention discloses a three-dimensional porous stent. The three-dimensional porous stent is made from composite biomaterials consists of degradable natural biomaterials and degradable artificiallysynthesized macromolecule materials. The three-dimensional porous stent has a three-dimensional orderly porous structure in which holes are homogeneous, mutually penetrated and regular in distribution, and the hole diameter is 80-350[mu]m. The invention further discloses a preparation method and application of the three-dimensional porous stent. According to the method disclosed by the invention,the advantages of an emulsion microflow control technique and the advantages of the composite biomaterials are combined. The three-dimensional porous stent disclosed by the invention has favorable biocompatibility and biodegradability and has the characteristics that the hole diameter is appropriate, the holes are mutually penetrated, and the three-dimensional porous stent is degradable and compressible, can be shaped and can be used for performing drainage effectively, and good space is provided for medicine delivery and slow release, cell growth and metabolism and tissue repair; the proportion of ingredients of the compound materials and the holes in concentrated distribution can guarantee that the three-dimensional porous stent has favorable compression and resilience properties like sponge, so that the three-dimensional porous stent can better adapt to the shape of the uterine cavity or the shape of other positions needing prevention of adhesion, and the effect of effectively preventing the adhesion can be achieved.

A vessel includes a hull and a deck, a substantially cylindrical rotor having a peripheral wall rotatable with respect to the deck around a longitudinal center line, the rotor being at a lower end connected to the deck and including an upper end plate, the rotor being mounted on the deck in such a manner that in an operational state the rotor is substantially vertically oriented and in an inoperational state the upper end plate is situated in the vicinity of the deck, the end plate extending transversely to the longitudinal center line, wherein the end plate is provided with movable edge segments that in the operational state of the rotor extend radially outwardly from the peripheral wall to an extended position and in the inoperational state of the rotor are moved to a retracted position that is situated closer to the peripheral wall than the extended position.

The invention relates to a plate electrode simulating a rotation part rotary printing electrolytic dissolution process device and a method, and belongs to the field of electrochemical machining. The test device has the characteristics that: a programmable power supply, an electrolytic fixture, an electrolyte filtration cycle system, a data recorder, a plate workpiece, a tool electrode and other equipment and devices are used, a static plate electrode is used instead of a rotary rotation electrode, and a related research about dissolution characteristics of rotary printing electrochemical machining is realized. The method comprises the steps that: step 1, an electric field simulation software numerical simulation is used for calculating a current density distribution waveform of an anode surface of rotary printing electrochemical machining; step 2, current waveform data corresponding to the current density distribution is calculated, and current waveform lattice data is imported into the programmable power supply; step 3, the electrolyte filtration cycle system and an electrochemical machining cathode and anode circuit are communicated; and step 4, a power is turned on and a relateddissolution test is conducted. According to the plate electrode simulating the rotation part rotary printing electrolytic dissolution process device and the method, the test cycle of the rotary printing electrochemical machining is shortened, the research process of rotary printing electrochemical machining is simplified. The device and the method are of great significance for reducing research cost and improving research accuracy.

The present invention relates to fluorinated polyethers having a fluorinated aliphatic group at a main chain as represented by the formula (1), as well as a waveguide fabricated using the same:

where R_F represents OCH₂(CF₂)_nCH₂O, or OCH₂CF₂O(CF₂CF₂O)_nCF₂CH₂O, where n is a natural number ranging from 1 to 12;

• Ar₁ represents
•  where B is not present or a C═O group, or
• Ar₁ represents
•  where Hal is one selected from F, Cl, Br and I;
• Ar₂ represents
•  where D is one selected from —C(CF₃)₂, —C(CH₃)₂, —CO—, —SO₂—, —O— and —S—, or
• Ar₂ represents
•  where R₁ and R₂ are the same or different and each independently represents a halogen atom selected from F, Cl, Br and I, and m is a natural number of 1-3, or
• Ar₂ represents
• E represents H, or
•  where P is H or a substituted or unsubstituted phenyl group;
• x is a number ranging from 0.1 to 1.0;
• y is 1.0−x.

An apparatus comprising a conduit clamping device with a closing mechanism for closing and opening passage of fluid or air in a flexible conduit is disclosed. The apparatus comprises a movable arm or disk that is connected to a manipulation arm or a knob; a conduit in form of a tube, that is laid flat against an abutment or protrusion; and a guide structure that constrains the movable arm or disk between the guide structure and the tube and being designed such that movement of the arm or disk will control the compression of the tube.

A ski with a connecting device for connecting a ski binding to the ski. The connecting device includes a plate-type support body which has a fixing zone in its longitudinal middle portion for providing a rigid connection to the ski. At least the front end portion of the support body forms a flexural element extending freely with respect to the fixing zone and to the ski. The freely extending flexural element is made from plastic and is coupled with the ski via a coupling device. This coupling device comprises a connecting arm, which has a first articulated connection to the flexural element in its first end portion and a second articulated connection to the ski in its second end portion.

The invention relates to a method for switching a machine tool from rapid travel to working travel and to a hydraulic pressure intensifier, especially for carrying out the inventive method. According to the invention, the machine tool is automatically switched from rapid travel to working travel when a defined counter-force occurs.