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30results about How to "Reduce filling pressure" patented technology

Hydrodynamic torque converter

InactiveUS6431335B1Positive effect on the efficiency of the converter operationReduce filling pressureRotary clutchesFluid actuated clutchesInterior spaceImpeller
A hydrodynamic torque converter having a converter housing defining interior space for receiving a converter work fluid, a turbine wheel arranged in interior space of the converter housing and rotatable with respect to the converter housing, a lockup clutch having a coupling element axially displaceably arranged on the turbine wheel for selectively coupling the turbine wheel with the converter housing. The converter housing and the coupling element define a pressure fluid space capable of being filled with a pressure fluid. The interior space is separated from the pressure fluid space for preventing fluid communication between the interior space and the pressure fluid space. The hydrodynamic torque converter also has a first channel connected to the interior space for guiding converter work fluid into the interior space, a second channel connected to the interior space for guiding converter work fluid out of the interior space and a third fluid channel connected to the pressure fluid space for selectively directing pressure fluid into and out of the pressure fluid space. The coupling element is displaced for at least partially canceling a rotational coupling of the converter housing and the turbine wheel when pressure fluid is directed into the pressure fluid space.
Owner:ZF FRIEDRICHSHAFEN AG

Device for damping pressure forces

ActiveCN104812653AQuick realization of the reset strokeExtended service lifeSpringsBufferPistonEngineering
The invention relates to a device (100) for damping pressure forces in the form of an impact absorber which is designed to be reversible even in the event of dynamic impact loads. The aim of the invention is to provide a device which is designed to absorb shocks in a reliable and reversible manner during normal operation and in the event of an overload. This is achieved by a device for damping pressure forces, said device having a valve arrangement (40) with an overflow region (41) which is connected to a rear hydraulic chamber region (12) and is designed such that hydraulic fluid can flow from the rear hydraulic chamber region (12) into a front hydraulic chamber region (13). A throttle pin (30) protrudes into a connecting region between the rear hydraulic chamber region (12) and the overflow region in order to control the flow speed of the hydraulic fluid from the rear hydraulic chamber region (12) in the direction of the overflow region (41). The throttle pin (30) can be converted from a first state in which hydraulic fluid can flow from the rear hydraulic chamber region (12) into the overflow region (41) into a second state in which the rear hydraulic chamber region (12) is separated from the overflow region (41) in a fluid-tight manner. Additionally, the valve arrangement (40), which is formed at an end region of the hollow piston, has an overload valve (60) which is connected to the rear hydraulic chamber region (12) via at least one overload channel (62).
Owner:VOITH PATENT GMBH

Revolving body part liquid-filling forming device and method

The invention provides a revolving body part liquid-filling forming device. The revolving body part liquid-filling forming device comprises a male die (1), a female die (3) and an edge pressing ring (2). The female die (3) is provided with a cavity (300) and a first liquid conveying pipeline (51), and the cavity (300) penetrates through the upper end face of the female die (3). A liquid containingspace is formed inside the cavity (300), and the first liquid conveying pipeline (51) communicates with the liquid containing space. A plate pressing gap is formed between the edge pressing ring (2)and the female die (3), and the height of the plate pressing gap can be adjusted. The edge pressing ring (2) is provided with a center through hole, and the male die (1) penetrates through the centerthrough hole to reach the interior of the liquid containing space. The invention further provides a forming method with the revolving body part liquid-filling forming device applied. The molded surface of the male die and the molded surface of the female die are matched to shape the final molded surfaces of deep drawn parts so that the shaping effect of liquid-filling pressure can be partially replaced, liquid-filling pressure is effectively reduced, and the product dimension precision is improved.
Owner:SHANGHAI SPACE PRECISION MACHINERY RES INST

Injection Moulding Method

A method of injection moulding an article, the method comprising the steps of: (a) providing an injection mould comprising a plurality of mould parts defining a mould cavity of the injection mould, the plurality of mould parts including first and second movable mould parts, the injection mould further comprising an injection inlet for injecting molten thermoplastic resin material into the mould cavity, wherein the injection inlet is located in the vicinity of the first movable mould part and the second movable mould part is remote from the injection inlet; (b) disposing the first and second movable mould parts in a first configuration so as to define a first intermediate moulding cavity, in which first configuration the first movable mould part is in a first rearward position and the second movable mould part is in a first forward position; (c) injecting molten thermoplastic resin material into the first intermediate moulding cavity through the injection inlet to fill the first intermediate moulding cavity with the molten material; (d) closing the injection inlet; (e) after commencement of the injecting step and at least partly after the closing step, moving the second movable mould part from the first forward position to a second rearward position; (f) moving the first movable mould part from the first rearward position to a second forward position; and (g) moving the second movable mould part from the second rearward position to a third forward position thereby to dispose the first and second movable mould parts in a final configuration so as to define a final moulding cavity of the injection mould filled with the molten material, the final moulding cavity defining a cavity outer surface which defines the outer shape of the article to be moulded.
Owner:GR8 ENG

device for pressure relief

ActiveCN104812653BQuick realization of the reset strokeExtended service lifeSpringsBufferEngineeringHydraulic fluid
The invention relates to a device (100) for damping pressure forces in the form of an impact absorber which is designed to be reversible even in the event of dynamic impact loads. The aim of the invention is to provide a device which is designed to absorb shocks in a reliable and reversible manner during normal operation and in the event of an overload. This is achieved by a device for damping pressure forces, said device having a valve arrangement (40) with an overflow region (41) which is connected to a rear hydraulic chamber region (12) and is designed such that hydraulic fluid can flow from the rear hydraulic chamber region (12) into a front hydraulic chamber region (13). A throttle pin (30) protrudes into a connecting region between the rear hydraulic chamber region (12) and the overflow region in order to control the flow speed of the hydraulic fluid from the rear hydraulic chamber region (12) in the direction of the overflow region (41). The throttle pin (30) can be converted from a first state in which hydraulic fluid can flow from the rear hydraulic chamber region (12) into the overflow region (41) into a second state in which the rear hydraulic chamber region (12) is separated from the overflow region (41) in a fluid-tight manner. Additionally, the valve arrangement (40), which is formed at an end region of the hollow piston, has an overload valve (60) which is connected to the rear hydraulic chamber region (12) via at least one overload channel (62).
Owner:VOITH PATENT GMBH

Inclined overhanging type supporting and retaining structure

The invention provides an inclined overhanging type supporting and retaining structure which comprises at least two overhanging piles which are partially buried in a canyon slope surface and are arranged at intervals in the length direction of the canyon slope surface, the overhanging piles are arranged upwards in an inclined mode relative to the horizontal plane, a soil retaining plate (bearing plate) is arranged on every two adjacent overhanging piles, and the area between each soil retaining plate and the canyon slope surface is a fill area. The fill area is of a solid structure or a spacedsupporting column structure. According to the supporting structure, the terrain characteristics of a steep canyon are fully utilized, the overhanging piles are obliquely and upwards arranged on the slope surface of the canyon relative to the horizontal plane to form an overhanging structure, the section size and the length of the overhanging piles can be effectively reduced, and the constructioncost is reduced; the problems that under the steep canyon terrain condition, filling is difficult, the size of a retaining structure is large, the retaining height is limited, and the occupied area islarge can be effectively solved. Meanwhile, the riverway can be effectively prevented from being invaded along the riverway section, and the risk of underwater construction is avoided.
Owner:中铁二院重庆勘察设计研究院有限责任公司

liquid gas buffer

The invention provides a liquid-gas buffer, comprising: a cylinder body; a first piston assembly: including a piston head and a force transmission rod, the piston head is arranged in the cylinder body, and the cylinder body is divided into a first liquid cavity and a second A liquid chamber, the force transmission rod extends out of the cylinder; the piston head is provided with a first fluid channel and a second fluid channel communicating with the first liquid chamber and the second liquid chamber; the first fluid channel is provided with The first switching element is configured to open when the pressure in the first liquid chamber is greater than the pressure in the second liquid chamber; the second fluid channel is provided with a second switching element configured to open when the pressure in the second liquid chamber is greater than the pressure in the first liquid chamber. When the liquid chamber is under pressure, it is opened; the second piston assembly is arranged around the force transmission rod, and the second liquid chamber is formed between the piston head and the cylinder port to form an air chamber. The piston assembly of the liquid-gas buffer adopts a partly built-in and partly externally designed structure, which is used as a liquid cavity separation component and a force transmission component to make the buffer structure more compact.
Owner:CRRC QINGDAO SIFANG ROLLING STOCK RES INST

Injection moulding method

A method of injection moulding an article, the method comprising the steps of: (a) providing an injection mould comprising a plurality of mould parts defining a mould cavity of the injection mould, the plurality of mould parts including first and second movable mould parts, the injection mould further comprising an injection inlet for injecting molten thermoplastic resin material into the mould cavity, wherein the injection inlet is located in the vicinity of the first movable mould part and the second movable mould part is remote from the injection inlet; (b) disposing the first and second movable mould parts in a first configuration so as to define a first intermediate moulding cavity, in which first configuration the first movable mould part is in a first rearward position and the second movable mould part is in a first forward position; (c) injecting molten thermoplastic resin material into the first intermediate moulding cavity through the injection inlet to fill the first intermediate moulding cavity with the molten material; (d) closing the injection inlet; (e) after commencement of the injecting step and at least partly after the closing step, moving the second movable mould part from the first forward position to a second rearward position; (f) moving the first movable mould part from the first rearward position to a second forward position; and (g) moving the second movable mould part from the second rearward position to a third forward position thereby to dispose the first and second movable mould parts in a final configuration so as to define a final moulding cavity of the injection mould filled with the molten material, the final moulding cavity defining a cavity outer surface which defines the outer shape of the article to be moulded.
Owner:GR8 ENG
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