96results about How to "Effective closure" patented technology

Novel apparatus and minimally invasive methods to treat atrioventricular valve regurgitation that is a result of tethering of chordae attaching atrioventricular valve leaflets to muscles of the heart, such as papillary muscles and muscles in the heart wall, thereby restricting the closure of the leaflets. Catheter embodiments for delivering and positioning chordal severing and elongating instruments are described.

Novel apparatus and minimally invasive methods to treat atrioventricular valve regurgitation that is a result of tethering of chordae attaching atrioventricular valve leaflets to muscles of the heart, such as papillary muscles and muscles in the heart wall, thereby restricting the closure of the leaflets. Catheter embodiments for delivering and positioning chordal severing and elongating instruments are described.

A combination of vehicle fairing structures forming a fairing system having a front end structure, a rear end structure, and first and second side structures, for optimizing the aerodynamic profile of vehicles, especially tractor-trailer combinations.

A vehicle fairing structure has a top fairing surface adapted to be attached to a trailer box, and first and second side fairing surfaces adapted to be attached to the sides of the trailer box, in the gap between a tractor cab and a trailer box in a tractor-trailer combination. The fairing structure directs air flow away from the gap, and is positioned in the gap to lessen aerodynamic drag, thereby reducing fuel consumption.

A vehicle fairing structure has a top fairing surface adapted to be attached to a trailer box, and first and second side fairing surfaces adapted to be attached to the sides of the trailer box, in the gap between a tractor cab and a trailer box in a tractor-trailer combination. The fairing structure directs air flow away from the gap, and is positioned in the gap to lessen aerodynamic drag, thereby reducing fuel consumption.

A fluid flow control device includes a housing having a fluid inlet (7) and at least one fluid outlet (8). A first fluid flow restrictor (1) serves as an inflow port to a chamber (B) in the housing, and a second fluid flow restrictor (2) serves as an outflow port from the chamber (B). The first fluid flow restrictor and the second fluid flow restrictor are configured to generate different fluid flow characteristics; and the chamber (B) includes an actuating device (5a-1) that is responsive to fluid pressure changes (ΔP2) in the chamber. The first fluid flow restrictor (1) and the second fluid flow restrictor (2) are configured to impose respective different fluid flow characteristics based on different fluid properties.

In accordance with the present invention, an easily openable container includes an elastic member that is connected to the container when the closure is in an open condition. Thus, the elastic member is at rest when the cover closure is open and spring-biases the closure to an open condition. When the closure is closed against the spring-biasing of the elastic material, the elastic member is stretched and held stretched when the closure in the front of the closure is engaged, such as by a snap closure or any other releasable connection. When the locking mechanism is released, the closure pops open by contraction of the elastic member.

The invention provides a high-temperature-resisting lithium-ion battery membrane with a plurality of types of coatings and belongs to the technical field of battery membranes. The high-temperature-resisting lithium-ion battery membrane is prepared from a coating membrane composed of a battery membrane with one surface or double surfaces coated with coating slurry; one surface or double surfaces of the coating membrane are coated with slurry additional layers; each slurry additional layer comprises at least one layer of coating composed of the coating slurry. The invention further provides a preparation method of the high-temperature-resisting lithium-ion battery membrane with the plurality of types of coatings; the battery membrane has the advantages that a coating membrane has relatively high safety on a battery; meanwhile, the battery membrane can also be used for resisting high temperature, reducing the shrinkage rate of the membrane under a high-temperature condition and prolonging the service life of the battery; the high-temperature-resisting lithium-ion battery membrane can be used for improving the affinity of the membrane and electrolyte and can guarantee that the membrane is sufficiently swollen through the electrolyte and the service life of the battery is prolonged.

The invention relates to well-cementing and self-healing cement slurry for an oil-gas field, which is suitable for the field of oil well cementation. The well-cementing and self-healing cement slurry comprises the following additives percentage by weight: 2-4% of fluid loss agent, 5-40% of self-healing component, 0.2-1.0% of stabilizing agent, 0.5-2.0% of dispersing agent, 0.3-1.0% of de-foaming agent, and 0.03-0.5% of retarding agent by taking the weight of cement as benchmark. A preparation method of the well-cementing and self-healing cement slurry is as follows: controlling the water cement ratio to be 0.44, uniformly mixing the additives at a low shearing speed, weighing a certain amount of cement, adding into slurry preparation liquid, and mixing with API (American petroleum institute) standards to obtain the well-cementing and self-healing cement slurry. The well-cementing and self-healing cement slurry has the characteristics of low water loss, adjustable thickening time, gas channeling prevention and excellent impervious performance and the like, has the functions of crack prevention and self healing, and remarkably improves the mechanical property of the cement.

The invetion relates to a prosthetic heart valve system(10;200;300) and a delivery system(400) therefor, wherein the prosthetic heart valve system(10;200;300) comprises a heart valve element(20) with expandable generally tubular stent support (102)forming a wire frame, wherein the tubular stent support(102) comprises a plurality of adjacent rows of interconnected, substantially diamond-shaped cell structures(171) extending, along and in parallel to the longitudinal direction, between the proximal end and distal end, and wherein the stent support(102), in a medial portion(105), comprises a circumferential row of a plurality of wire anchor structures(171) which wire anchor structures are spaced from one another and attached to the wire frame and which, in respect to the longitudinal axis of the stent support(102), at least partially protrude outward at an angle [alpha]. The prosthetic heart valve system may also comprise a stent(graft)-element(310).

A fluid flow control device includes a housing having a fluid inlet (7) and at least one fluid outlet (8). A first fluid flow restrictor (1) serves as an inflow port to a chamber (B) in the housing, and a second fluid flow restrictor (2) serves as an outflow port from the chamber (B). The first fluid flow restrictor and the second fluid flow restrictor are configured to generate different fluid flow characteristics; and the chamber (B) includes an actuating device (5a-1) that is responsive to fluid pressure changes (ΔP2) in the chamber. The first fluid flow restrictor (1) and the second fluid flow restrictor (2) are configured to impose respective different fluid flow characteristics based on different fluid properties.

A fluid flow control device serving as an inflow port from a fluid reservoir (R) to the interior of a production pipe (S) is in the form of a housing (3b, 3c, 3d, 3e, 3f, 3g, 3h, 3i, 3j, 3k, 3l). The housing has a primary flow path (18) and a secondary flow path (19). The secondary flow path is in fluid communication with a chamber (B) in which is arranged an actuator (5) for a valve device (4), the valve device arranged to open and close the primary flow path. At least one flow restrictor (1,2) is arranged in the secondary flow path, the flow restrictor arranged to provide a pressure to chamber (B) sufficient to actuate the valve to an open position when the fluid flowing through the secondary flow path is oil, and a pressure sufficient to actuate the valve to a closed position when the fluid has a viscosity and / or density less than oil.

The invention discloses an intelligent self-monitoring and self-repairing memory alloy composite beam, which includes an upper concrete slab and a lower I-shaped steel, as well as a memory alloy shear nail as a sensing element and a shear nail embedded in the upper concrete slab along the beam length direction. Carbon fiber‑memory alloy composite, memory alloy shear studs are used to connect the upper concrete slab and the lower I-beam. It also includes an alloy resistance measurement circuit for measuring fatigue cracks inside the upper concrete slab during structural use, and an alloy excitation drive circuit for reset deformation of the carbon fiber-memory alloy composite after external heating of the memory alloy. The present invention adopts the shear nail made of memory alloy material as the connector connecting the upper and lower parts of the composite beam, mainly utilizing the superelasticity characteristic of memory alloy itself; ), which can be used as a sensing element to realize effective self-monitoring.

The invention discloses a multifunctional window. The multifunctional window comprises a window body and a window opening and closing device, wherein signals are sensed by a photosensitive sensor, a raindrop sensor, a human body detector and an infrared receiver in the window opening and closing device and sent to a single chip microcomputer to be analyzed and processed; a motor is controlled to perform positive and negative rotation to drive a conveyor belt to rotate a sliding window so as to realize window opening and closing; and parallel circuit connection can achieve one or more functions. The multifunctional window adopting the scheme is reasonable in design and high in practicability, can be automatically closed on rainy days and opened at dark, also can effectively prevent burglary through the human body detector, and furthermore, can be automatically controlled to open and close through a remote controller.

The invention discloses a Chinese herbal medicine cleaning device with a drying function. The Chinese herbal medicine cleaning device comprises a bottom plate. A box body is fixedly connected to the top of the bottom plate. A box cover is arranged on the top of the box body. Air outlet holes are formed in the two sides of the top of the box cover correspondingly. The top of the left side of an inner cavity of the box body communicates with a water inlet pipe. The bottom of the left side of the inner cavity of the box body communicates with a water outlet pipe. Heating plates are arranged on the two sides of the inner cavity of the box body correspondingly. A connecting plate, a connecting rod, a driving wheel, a driving shaft, a motor, a belt, a driven wheel, the heating plates, a fixed rod, a transmission shaft and fixing bolts are arranged and matched in use so that Chinese herbal medicines can be cleaned and dried, in this way, the using efficiency of the Chinese herbal medicine cleaning device is higher, and the problem that when used, an existing Chinese herbal medicine cleaning device only has a cleaning function and cannot dry the cleaned Chinese herbal medicines, and consequently is low in using efficiency is solved.

The invention relates to well-cementing and self-healing cement slurry for an oil-gas field, which is suitable for the field of oil well cementation. The well-cementing and self-healing cement slurry comprises the following additives percentage by weight: 2-4% of fluid loss agent, 5-40% of self-healing component, 0.2-1.0% of stabilizing agent, 0.5-2.0% of dispersing agent, 0.3-1.0% of de-foaming agent, and 0.03-0.5% of retarding agent by taking the weight of cement as benchmark. A preparation method of the well-cementing and self-healing cement slurry is as follows: controlling the water cement ratio to be 0.44, uniformly mixing the additives at a low shearing speed, weighing a certain amount of cement, adding into slurry preparation liquid, and mixing with API (American petroleum institute) standards to obtain the well-cementing and self-healing cement slurry. The well-cementing and self-healing cement slurry has the characteristics of low water loss, adjustable thickening time, gas channeling prevention and excellent impervious performance and the like, has the functions of crack prevention and self healing, and remarkably improves the mechanical property of the cement.

Fastening devices are provided that are designed to effectively close tissue as well as instruments for applying the inventive fastening devices. The devices are useful for closing tissue such as mucosa in the oral cavity, oropharynx, hypopharynx, laryngeal surfaces, oronasopharynx, or other mucosal tissues. In particular, uvulopalatopharyngoplasty (UPPP), uvulopalatal flap (UPF) technique, and tonsillectomy can be assisted using the inventive system. Embodiments also provide methods of using the fastening devices and / or instruments, and kits including the fastening devices.

The invention discloses an energy-saving motor with heat dissipation performance, which comprises a workbench, two symmetrical snap-in grooves are opened on the top of the workbench, and a first sealing cover and a second sealing cover are respectively placed on the top of the workbench A handle is fixedly connected to the sides of the first sealing cover and the second sealing cover away from each other, and a non-slip rubber sleeve is fixedly connected to the middle of each handle. The energy-saving motor with heat dissipation performance can carry out corresponding heat dissipation treatment according to actual needs, and is more convenient to use. The flow speed ensures the rapid dissipation of heat, effectively avoids the burning of the motor, ensures the normal use of the motor, has good heat dissipation performance, effectively avoids the waste of water resources, and can quickly dissipate heat to the motor. Good cooling effect.

The invention discloses a gypsum slip casting mold. The gypsum slip casting mold comprises a first half mold body (2) forming a first cavity (1) and a second half mold body (4) forming a second cavity(3). The first cavity (1) and the second cavity (3) are matched to form a cavity for gypsum injection. At least one first containing cavity (5) is formed inside the first half mold body (2). At leastone second containing cavity (6) is formed inside the second half mold body (4). Permanent magnets are arranged in the first containing cavities (5) and the second containing cavities (6). The materials of the first half mold body (2) and the second half mold body (4) are ABS resin and nanometer zeolite powder composite materials. The effects of good use performance, convenient demolding, good water absorption performance, simple and convenient processing and great reduction of production cost are realized.

It is provided a fluid flow control device for establishing a controllable fluid communication between an external fluid reservoir and a base pipe constituting part of a production string, as well as a production string and a method using such a fluid flow control device. The fluid flow control device comprises a primary flow path arranged inside a fluid control device housing, a secondary flow path and a movable valve element arranged at and / or within the primary flow path. The inlet of the secondary flow path is arranged separate from the inlet of the primary flow path.

The invention discloses an engaged retaining pile. The engaged retaining pile comprises a plurality of plain concrete piles laid from front to back and a plurality of reinforced concrete piles laid from front to back. The plain concrete piles and the reinforced concrete piles are laid in a staggered mode. A pile body of each reinforced concrete pile is engaged with pile bodies of two plain concrete piles located front and back, so that the retaining effect is good. The invention further discloses a construction method of the engaged retaining pile. The construction method comprises the steps that firstly, construction of the plain concrete piles is conducted, and the multiple plain concrete piles are constructed from front to back; and secondly, construction of the reinforced concrete piles is conducted, the multiple reinforced concrete piles are constructed from front to back in the construction process of the multiple plain concrete piles, drilled hole-forming construction processes of any one of the reinforced concrete piles are conducted after the construction of the two adjacent plain concrete piles front and back is completed. The construction method is simple; the design is reasonable and the construction is simple and convenient; the construction efficiency is high and the construction effect is good. In addition, the invention discloses an application of the engaged retaining piles, namely a foundation pit retaining structure is formed by fixedly connecting the multiple engaged retaining piles tightly.

The present invention discloses a multifunctional distribution cabinet with a dampproof device. The cabinet comprises a cabinet body, the outer wall of the cabinet body is provided with a shielding layer, a pedestal is horizontally arranged at the lower side of the cabinet body, the bottom of the cabinet body is fixed at the surface of the pedestal through two support pillars, the upper side of the cabinet body is provided with a top plate, the top plate is fixed at the upper surface of the cabinet body through the support pillars, scrolls are arranged around the lower side of the top plate, a fixed rod is arranged at the corresponding position of the upper side of the pedestal and the scrolls, a rain-proof and sunscreen cover is winded on the scrolls, a cabinet door is arranged at the front side of the cabinet body, and the left end of the cabinet door is connected with the cabinet body through a hinge. The multifunctional distribution cabinet with the dampproof device has good anti-interference performance, the rain-proof and sunscreen cover improves the rain-proof and sunscreen capacity of the cabinet body, the service life of the cabinet body is prolonged, the arrangement of an observation window facilities observing the internal work condition of the cabinet body, the observation window can be protected, the practicability is high, and the multifunctional distribution cabinet with the dampproof device can effectively perform fire protection so as to improve the safety and facilitate the night emergency maintenance.

An assembly for opening and closing a furrow in soil includes a furrow opener with a pair of discs positioned at an angle relative to each other. The discs each have an inner side facing toward each other and an outer side facing away from each other. Each disc also has a leading edge and a trailing edge relative to a travel direction. A furrow closer includes a pair of wheels, each having an inner side facing toward each other and positioned adjacent to a corresponding disc outer side. Each wheel also has a leading edge positioned between a corresponding disc leading edge and disc trailing edge, and a trailing edge positioned rearward of a corresponding disc trailing edge relative to the travel direction.

The invention discloses an anti-freezing device for a tree. The anti-freezing device comprises a square body and two sealing edges arranged on the two opposite edges of the square body respectively. The square body is of a flexible structure, and the two sealing edges are respectively of a rigid structure. The square body is wound around a tree trunk and wrapped on the tree trunk, and the two sealing edges are sealed in parallel to form a cylinder with a cavity. The anti-freezing device body is of the flexible structure, so that the anti-freezing device can be wrapped on the tree in an attached mode; the two sealing edges are of the rigid structures, so that the device is fixed after the two sealing edges are sealed, and the device body is prevented from sliding down along the tree trunk. The anti-freezing device for the tree can effectively achieve the anti-freezing effect for the tree.

The invention discloses a cigarette carton quality detection device, relates to the technical field of cigarettes, and aims to solve the problem of low detection performance caused by low adjustment flexibility in the detection process of existing cigarette cartons. A surrounding identification detection structure is installed above the transmission detection structure, a surface pressing structure is arranged on one side of the transmission detection structure, an internal detection structure is installed on one side of the surface pressing structure, and an extraction test structure is arranged on one side of the internal detection structure. A feeding structure is installed at the front end of the transmission detection structure, a butt joint hole is formed in the surface of the feeding structure, an overturning plate is installed in the middle of the transmission detection structure, a supporting column is installed at the lower end of the transmission detection structure, and the supporting column is fixedly connected with the lower end of the transmission detection structure; the inner wall of the transmission detection structure is provided with an adjusting plate structure, and the adjusting plate structure is fixedly connected with the inner wall of the transmission detection structure.