1023results about How to "Avoid expansion" patented technology

Retractable ball seats having a housing, a seat, and a plug such as a ball are disclosed. The seat has a retracted position that prohibits the ball from passing through the passageway and an expanded position that permits the ball to pass through the passageway. A time delay material, such as a dissolvable material, maintains the seat in the retracted position. The time delay material disintegrates, degrades, or dissolves within a known period of time such that the retractable ball seat can be placed in a desired location in the wellbore and the ball will be released through the passageway within a known period of time.

Retractable ball seats having a housing, a seat, and a plug such as a ball are disclosed. The seat has a retracted position that prohibits the ball from passing through the passageway and an expanded position that permits the ball to pass through the passageway. A time delay material, such as a dissolvable material, maintains the seat in the retracted position. The time delay material disintegrates, degrades, or dissolves within a known period of time such that the retractable ball seat can be placed in a desired location in the wellbore and the ball will be released through the passageway within a known period of time.

Implantable devices, instruments, kits and methods for treatment of obesity. One or more devices can be implanted adjacent to or in contact with the stomach to occupy a space to prevent the stomach from expanding into that space as food is taken into the stomach. Alternatively, one or more devices may be implanted and expanded to displace at least a portion of the wall of the stomach to decrease the internal volume of the stomach that is available to receive food. Devices may be anchored to one or more internal structures at one or more locations without piercing through the wall of the stomach. Devices can be implanted using minimally invasive methods, such as percutaneous or laparoscopic methods. Delivery instruments are also provided. An intra-gastric sizing device is provided to facilitate implantation of an extra-gastric device in some method embodiments.

A vaso-occlusive device includes inner, intermediate, and outer elements arranged coaxially. The inner element is a filamentous element, preferably a microcoil. The intermediate element is made of a non-metallic material, preferably an expansile polymer. The outer element is substantially non-expansile and defines at least one gap or opening through which the intermediate element is exposed. In a preferred embodiment, when the intermediate element is expanded, it protrudes through the at least one gap or opening in the outer element and assumes a configuration with an undulating, convexly-curved outer surface defining a chain of arcuate segments, each having a diameter significantly greater than the diameter of the outer element. The expanded configuration of the intermediate element minimizes friction when the device is deployed through a microcatheter, thereby reducing the likelihood of buckling while maintaining excellent flexibility. The result is a device with enhanced pushability and trackability when deployed through a microcatheter.

A medical device for use in the interior of a body lumen includes a balloon catheter and a radially expandable stent. The stent includes a plurality of zig-zags of a low memory metal formed into a hollow, open-ended cylindrical shape. The individual zig-zags have a curved portion forming a reversing bend which allows the zig-zags to expand and deform as the balloon radially expands the stent. The curved portions of the zig-zags are aligned along the length of the stent in a spaced-apart arrangement with some curved portions attached and others unattached to adjacent zig-zags. The resulting stent is longitudinally flexible throughout its length when unexpanded and is also capable of conforming to a bend in the body lumen when expanded.

A suspicious individual can be detected more accurately. A face detecting unit detects a face image of an approaching individual from a monitor image, and a characteristic amount detecting unit detects the characteristic amount of the approaching individual from the face image. A collating unit identifies an approaching individual by collating the characteristic amount of the approaching individual with the characteristic amount of an authorized individual which is recorded in an authorized individual information recording unit and the characteristic amount of a previously detected individual which is recorded in an approach information recording unit. An approaching activity detecting unit and an abnormal activity detecting unit compute the degree of suspiciousness of the approaching individual on the basis of the frequency with which the approaching individual approaches a target of monitoring, time at which the approaching individual approaches a target of monitoring, distance by which the approaching individual approaches a target of monitoring, and the like. A suspiciousness degree judgment unit judges whether the approaching individual is a suspicious individual or not, on the basis the degree of suspiciousness. The present invention can be applied to an on-vehicle monitoring system.

A method for manufacturing a magnetic recording medium includes the steps of (a) forming a perpendicular magnetic recording layer and (b) applying an ion beam to regions between tracks of the perpendicular magnetic recording layer so as to form separation regions for magnetically separating the tracks from each other. In the step (a), a continuous film layer composed of a multilayer film is formed, and CoB layers and Pd layers are laminated in the multilayer film. In the step (b), the CoB layers and the Pd layers are melted by the ion beam so as to form an alloy of metals contained in the CoB layers and the Pd layers to thereby form the separation regions.

The present invention provides an eyewear frame assembly. A frame has an aperture for receiving a lens. The frame has a split to expand upper and lower portions of the frame to insert or remove the lens from the aperture. First and second projections extend outwardly from the upper and lower frame portions, respectively. The first and second projections have first and second tapered portions, respectively. A sleeve receives said first and second projections. The sleeve has first and second inwardly extending and tapered tabs adapted to receive the first and second tapered portions to secure the first and second projections within the sleeve. The upper and lower portions of the frame are prevented from expanding when the first and second projections are received within the sleeve. First and second openings in the sleeve provide access to depress the first and second projections to remove the first and second projections from the first and second sleeves. A threaded fastener and a threaded sleeve forms a reinforcement assembly for the two portions of the split frame. The sleeve engages the fastener to resist its disengagement with the bushing.

Methods, systems and devices for treatment of musculoskeletal tissue may include one or more of stretching, scoring, cutting, and cryogenic cooling of the tissue. Exemplary usage includes the treatment of compressive neuropathy such as in carpal tunnel syndrome and plantar fasciitis. Other musculoskeletal tissues such as those in the hip, shoulder, and other regions of the body may also be treated.

The present invention provides an eyewear frame assembly. A frame has an aperture for receiving a lens. The frame has a split to expand upper and lower portions of the frame to insert or remove the lens from the aperture. First and second projections extend outwardly from the upper and lower frame portions, respectively. The first and second projections have first and second tapered portions, respectively. A sleeve receives said first and second projections. The sleeve has first and second inwardly extending and tapered tabs adapted to receive the first and second tapered portions to secure the first and second projections within the sleeve. The upper and lower portions of the frame are prevented from expanding when the first and second projections are received within the sleeve. First and second openings in the sleeve provide access to depress the first and second projections to remove the first and second projections from the first and second sleeves.

A stent graft (10) has a tubular body (12) of a biocompatible material and at least one fenestration (18, 20). The or each fenestration has a tubular side branch stitched into it with a portion of the tubular side branch extending within the tubular body and a portion of the tubular side branch extending exteriorly of the tubular body. The stitching by which the tubular side branch is mounted into the fenestration extends circumferentially and diagonally from one end of the tubular side branch to the other such that the tubular side branch extends from the tubular body at an angle thereto. The tubular side branch has a resilient ring around at least one and preferably both ends thereof and a self expanding stent in between them. The tubular side branch can have a circumferential linear portion (46) at an inner end to engage against the inner wall (58) of the tubular body. The tubular side branch can have a stent made from a single wire forming a first ring (45), a second ring (47), the second ring defining a plane which is substantially parallel to and spaced axially apart from the plane of the first ring and a number of helical wire portions (49) extending between the first and second ring. Preferably the wire is a shape memory wire such as Nitinol™wire.

An acoustic generator, comprising: a source of electro-magnetic radiation; a waveguide coupled to said source; and at least one absorbing region defined in said waveguide, said region being selectively absorbing for portions of said radiation meeting at least one certain criterion and having significantly different absorbing characteristics for radiation not meeting said criterion, both of said radiation portions being suitable for conveyance through said waveguide, wherein said absorbing region converts said radiation into an ultrasonic acoustic field. Optionally, said region comprises a volumetric absorber. Alternatively or additionally, said region comprises a plurality of regions.

An active region, a source region, and a drain region are formed on a single crystal semiconductor substrate or a single crystal semiconductor thin film. Impurity regions called pinning regions are formed in striped form in the active region so as to reach both of the source region and the drain region. Regions interposed between the pinning regions serve as channel forming regions. A tunnel oxide film, a floating gate, a control gate, etc. are formed on the above structure. The impurity regions prevent a depletion layer from expanding from the source region toward the drain region.

Implantable devices, instruments, kits and methods for treatment of obesity. One or more devices can be implanted adjacent to or in contact with the stomach to occupy a space to prevent the stomach from expanding into that space as food is taken into the stomach. Alternatively, one or more devices may be implanted and expanded to displace at least a portion of the wall of the stomach to decrease the internal volume of the stomach that is available to receive food. Devices may be anchored to one or more internal structures at one or more locations without piercing through the wall of the stomach. Devices can be implanted using minimally invasive methods, such as percutaneous or laparoscopic methods. Delivery instruments are also provided. An intra-gastric sizing device is provided to facilitate implantation of an extra-gastric device in some method embodiments.

A wiring connecting structure for a piezoelectric element is capable of performing wiring to the piezoelectric element without deteriorating the quality and reliability of the piezoelectric element. The piezoelectric element is arranged between a base and head of an object, to minutely move the head in a sway direction according to deformation that occurs on the piezoelectric element in response to a voltage applied from a terminal to an electrode of the piezoelectric element. The wiring connecting structure includes first and second liquid stoppers arranged between the terminal and the electrode, the second liquid stopper being arranged outside the first liquid stopper. The wiring connecting structure also includes an adhesive part to connect the electrode to the terminal. The adhesive part has a conductive adhesive part defined by the first liquid stopper and a sealing adhesive part defined by the second liquid stopper. The sealing adhesive part seals the first liquid stopper and conductive adhesive part.

A stent graft (10) has a tubular body (12) of a biocompatible material and at least one fenestration (18, 20). The or each fenestration has a tubular side branch stitched into it with a portion of the tubular side branch extending within the tubular body and a portion of the tubular side branch extending exteriorly of the tubular body. The stitching by which the tubular side branch is mounted into the fenestration extends circumferentially and diagonally from one end of the tubular side branch to the other such that the tubular side branch extends from the tubular body at an angle thereto. The tubular side branch has a resilient ring around at least one and preferably both ends thereof and a self expanding stent in between them. The tubular side branch can have a circumferential linear portion (46) at an inner end to engage against the inner wall (58) of the tubular body. The tubular side branch can have a stent made from a single wire forming a first ring (45), a second ring (47), the second ring defining a plane which is substantially parallel to and spaced axially apart from the plane of the first ring and a number of helical wire portions (49) extending between the first and second ring. Preferably the wire is a shape memory wire such as Nitinol™ wire.

The invention discloses an upper cover assembly of an electric pressure cooker and the electric pressure cooker with the upper cover assembly. The upper cover assembly comprises an upper cover body, a rotating chuck, a plurality of fasteners, a plurality of support posts and stop gaskets, wherein the rotating chuck is pivotally connected with the upper cover body; a clamping groove is formed in the rotating chuck; the plurality of support posts are connected with the corresponding fasteners, are matched in the clamping groove, are propped against the clamping groove when the rotating chuck rotates, and move long the radial direction of the rotating chuck to drive the fasteners to be fastened to or separated from an outer pot; the stop gaskets are fixed at the upper ends of the support posts; and the sizes of the stop gaskets are greater than the width of the clamping groove in the width direction of the clamping groove. The upper cover assembly of the electric pressure cooker is good in operation smoothness and high in stability, the support posts are not easy to damage and the service life is relatively long.

A wiring connecting structure for a piezoelectric element is capable of performing wiring to the piezoelectric element without deteriorating the quality and reliability of the piezoelectric element. The piezoelectric element is arranged between a base and head of an object, to minutely move the head in a sway direction according to deformation that occurs on the piezoelectric element in response to a voltage applied from a terminal to an electrode of the piezoelectric element. The wiring connecting structure includes first and second liquid stoppers arranged between the terminal and the electrode, the second liquid stopper being arranged outside the first liquid stopper. The wiring connecting structure also includes an adhesive part to connect the electrode to the terminal. The adhesive part has a conductive adhesive part defined by the first liquid stopper and a sealing adhesive part defined by the second liquid stopper. The sealing adhesive part seals the first liquid stopper and conductive adhesive part.

The present invention is directed to a banded doorsill base for disposition between a pair of doorjambs of a door frame. The doorsill base includes an elongate central portion formed from a polymeric material having a first coefficient of linear expansion, and first and second wooden strips bonded to and extending along opposite sides of the central portion for constraining the central portion and preventing linear expansion thereof. The first and second strips are formed from a material having a second coefficient of linear expansion less than the first coefficient. The first and second strips substantially prevent linear expansion of the central portion. The present invention also relates to a method of forming the banded doorsill base, and to a doorsill assembly having a banded doorsill base.

The invention discloses an intelligent electrical equipment environment monitoring system based on cloud computing and big data analysis. The system comprises a cloud server, an intelligent master control device, monitoring devices and communication equipment communicating with the cloud server, wherein the monitoring devices are used for acquiring related data of an electrical equipment environment and transmitting the data to the intelligent master control device; the intelligent master control device is used for controlling the monitoring devices and transmitting the data received from the monitoring devices to the cloud server; the cloud server is used for receiving and storing the related data of the electrical equipment environment; a user accesses the cloud server through a mobile phone or a computer and then controls the master control device and the monitoring devices remotely. The system depends on cloud computing to perform big data analysis on online meteorological information, real-time data and historical data, intelligently monitors the monitoring devices of all nodes, evaluates the monitoring effectiveness, analyzes potential risks effectively and solves problems by which people are puzzled for many years about outdoor electrical equipment microenvironments, online micrometeorology monitoring, real-time intelligent control and the like.

An air mattress is disclosed, which comprises an upper raw material member which has a coating layer at an upper surface of the same; a lower raw material which is spaced and installed at a lower side of the upper raw material member and has a coating layer at a lower surface of the same; a plurality of fiber threads which vertically connect the upper and lower raw material members and react with respect to an external pressure; a coated side raw material which is fixedly engaged to seal a surrounding portion between the upper and lower raw material members; and an air injection valve engaged at one side of the side raw material. A force distribution function is excellently performed when an external impact is applied to the air mattress according to the present invention, so that a distortion phenomenon of the product is prevented. It is possible to prevent the sides of the air mattress from being abnormally expanded by the side raw material bonded to the upper raw material member and the lower raw material member.

A non-aqueous electrolyte secondary battery is composed of a positive electrode containing a positive electrode active material capable of storing and releasing lithium ion, a negative electrode containing a negative electrode active material capable of storing and releasing lithium ion, and a non-aqueous electrolyte. The negative electrode active material contains a first material of a graphite material and a second material of a complex in which graphite material and silicon or silicon composite are coated with amorphous carbon material, and a cyclic carbonic acid ester derivative having fluoride atom and a sulfur-containing composite having cyclic structure are added to the non-aqueous electrolyte.

The invention relates to a method and apparatus for safely producing hydrogen peroxide by injecting dispersed minute bubbles of hydrogen and oxygen into a rapidly flowing liquid medium. The minute bubbles are surrounded by the liquid medium of sufficient volume for preventing an explosive reaction between the hydrogen and oxygen. The liquid medium is formed of an acidic aqueous solution and a Group VIII metal catalyst. Hydrogen is sparged into the flowing medium for dissolution of the hydrogen in the medium. Oxygen bubbles are reacted with the dissolved hydrogen for producing hydrogen peroxide. Preferably, the liquid medium has a velocity of at least 10 feet per second for providing a bubbly flow regime in the reactor. The invention allows the direct combination of oxygen and hydrogen while preventing propagation of an explosive condition within the reactor. The method and apparatus provide for the safe production of hydrogen peroxide with low manufacturing costs.

The one-step method for reeling the silk of fresh silkworm cocoon includes cold storage, freezing for antistaling, investigating quality of cocoon, screening, vacuumizing, absorbing water, discharging water, reeling silk, heating and winding. Its advantage is high silk quality.

A negative electrode capable of giving a non-aqueous electrolyte secondary battery which has high capacity, long cycle life and excellent safety, and exhibits an excellent cycle characteristic even when charging / deep-discharging are repeated. The negative electrode comprises a current collector sheet and an active material layer deposited on the surface of the current collector sheet, wherein the active material layer comprises SiOx satisfying: 0.7≦x≦1.3, and does not include a binder.

A battery is composed of a positive electrode in which a positive electrode active material layer including a positive electrode active material is formed on a positive electrode collector, a negative electrode in which a negative electrode active material layer including a negative electrode active material is formed on a negative electrode collector, a separator provided between the positive electrode and the negative electrode, and an electrolyte impregnated in the separator. The battery further includes at least one of a heteropoly acid and a heteropoly acid compound as an additive at least in one of the positive electrode, the negative electrode, the separator, and the electrolyte.