71results about How to "Prevent pressure buildup" patented technology

Devices, systems, and methods for treating a heart of a patient may make use of structures which limit a size of a chamber of the heart, such as by deploying one or more tensile member to bring a wall of the heart and a septum of the heart into contact. A plurality of tension members may help exclude scar tissue and provide a more effective remaining ventricle chamber. The implant may be deployed during beating of the heart, often in a minimally invasive or less-invasive manner. Trauma to the tissues of the heart may be inhibited by selectively approximating tissues while a pressure within the heart is temporarily reduced. Three-dimensional implant locating devices and systems facilitate beneficial heart chamber volumetric shape remodeling.

A container and sealable cover in which the container has a bottom wall and an upstanding peripheral wall terminating in an upper edge surrounding an open mouth. The peripheral wall is inclined outwardly at a slight angle to the vertical or alternatively vertically disposed. A replaceable cover is provided with a central top planar wall and an inverted U-shaped periphery terminating in an outer rim skirt. A contiguous downwardly extending sealing fin is disposed inwardly of the skirt for forming an interference fit with the inside surface of the upper portion of the container peripheral wall when the cover is installed over the container mouth. The fin may be substantially vertically disposed or canted outwardly at a small angle to the vertical depending upon the inclination of the peripheral wall. A pair of latches are rotatably mounted on the cover adjacent the outer rim skirt and arranged to engage protruding latch hooks on the container peripheral wall to releasably secure the cover over the container mouth.

A prescription drug monitoring / dispensing device ensures prescription medication housed within is taken only as directed, and not abused or sold on the streets. The device serves as an intricately guarded casing that may only dispense the preprogrammed dosage amounts at preset times, as directed by a prescribing physician. The device may include a housing having a biometric finger scanner and a display screen in communication therewith, a loading tube capable of holding a pill therein, a rotating hub in communication with the loading tube, a rotating disc in communication with the loading tube, and an exit port capable of dispensing the pill out from the housing.

A steamer attachment (10) allows a user to selectively dispense steam from a steamer (12). The attachment (10) broadly comprises a body (14), a first and second steam distributor (16,18) located in a head (20) of the body (14), and a valve (22) located in a handle (24) of the body (14). The first distributor (16) preferably comprises a nozzle (52) to concentrate the steam and a brush (54). The second distributor (18) preferably comprises a plurality of holes (56) to disperse the steam. The second distributor (18) may also include a detachable diffusor (58) to further disperse the steam. The valve (22) preferably opens a first path toward the first distributor (16) before closing a second path toward the second distributor (18). Thus, the steam always has at least one available path, in order to prevent pressure buildup within the steamer (12).

Apparatus of components and methods for connecting and sealing a pothead to an electrical cable used in an oil well environment, are provided. Electrical leads are anchored in insulating members retained within the pothead. The leads inserted into passages formed through the insulating members each having an elliptically shaped portion. Channels are formed along the surface of the passages and along the circumference of the elliptically shaped portions. Boot seals are provided in the elliptically shaped portions and circumscribe the electrical leads. A hydrocarbon-based liquid is applied to the boot seals to cause them to swell and occupy the space between the leads and the insulators, including the channels.

A rotary union assembly for an automatic tire inflation system for maintaining the pressure in the tires on a tractor trailer or other vehicle having a source of pressurized air for communication with the tires. The assembly communicates the tires with the air source through the axle interior using a conduit having a rigid portion and a flexible portion that extends between a support in the axle spindle and a rotary union housing secured against the outside end surface of the hub cap so as to be outside the wheel lubrication compartment and rotatable with the hub cap. The two-component conduit allows for a durable seal with the support in the axle spindle and accommodates misalignment of the rotary union housing with the conduit support. Relief valves in the housing prevent excessive pressure buildups in the housing and in the hub cap in the event of an air leak.

A fuel delivery system is provided with a fuel solenoid valve to minimize fuel leakage and evaporative emissions during diurnal cycles by preventing pressure buildup as the temperature of the fuel system rises. The fuel solenoid valve is located between a pressurized side of the delivery system and a fuel tank. In one embodiment, the fuel solenoid valve is closed when the engine is running or when the engine is off and the rail is hot. When the fuel rail cools down, the solenoid valve opens to bleed a desired amount of fuel thereby creating a fuel vapor space. Thereafter, during hot soak conditions of the diurnal cycles when the fuel rail is hot again while the engine is off, the pressure will rise due to the thermal expansion of the fuel and the created fuel vapor space minimizes further rising of the fuel pressure. Further, by adjusting the solenoid valve opening time, the pressure rising limit may be set at a desired pressure to minimize injector leakage.

A series of ball seat assemblies preferably used to open a series of sliding sleeves for formation access to a zone that is to be fractured allows sequential shifting of the sleeves with a single ball. The ball is guided by a tapered member with a lower outlet larger than the ball. The ball lands on the segments that are initially supported. Some leakage occurs between the segments but not enough to prevent pressure buildup to shift the sleeves. The tapered member closely fits to the segments to minimize leakage. Shifting the segments axially allows them to retract so the ball passes to eventually land on a non-leaking seat so that the zone can be fractured. The ball is recovered at the surface after passing the retracted segments and going through the undistorted opening in the tapered member.

A system and method for localized delivery of a therapeutic or diagnostic agent within a vessel is provided. The system and method provide for adjustability of the length of the treatment area and for reducing of pressure within the treatment area. A catheter system includes an inner elongated element, an outer elongated element positioned coaxially with respect to the inner elongated element, and a blood-release element at a distal end of the inner elongated element. A proximal occlusion element is positioned at the distal end of the outer elongated element, proximal to an outlet port. A distal occlusion element is positioned at a distal end of the inner elongated element. The distal end of the inner elongated element is distal to and movable with respect to the outer elongated element distal end.

Devices, systems, and methods for treating a heart of a patient may make use of structures which limit a size of a chamber of the heart, such as by deploying one or more tensile member to bring a wall of the heart and a septum of the heart into contact. A plurality of tension members may help exclude scar tissue and provide a more effective remaining ventricle chamber. The implant may be deployed during beating of the heart, often in a minimally invasive or less-invasive manner. Trauma to the tissues of the heart may be inhibited by selectively approximating tissues while a pressure within the heart is temporarily reduced. Three-dimensional implant locating devices and systems facilitate beneficial heart chamber volumetric shape remodeling.

A fuel pressure relief valve is provided to minimize evaporative emissions due to fuel leakage through the fuel injectors. The fuel pressure relief valve is sealed during operation to prevent flow through the valve. When the automotive vehicle is not operating and the temperature has cooled, the valve unseals. Thereafter, temperature rises that would otherwise result in pressure buildup are prevented.

A pneumatically operated animal stunner achieves a high stunning energy to produce concussion and stun an animal without penetration by accelerating a lightweight stunning rod to high speed. The stunning rod is preferably hollow and made of a lightweight material. A piston sliding within a cylinder with an anti-friction coating drives the stunning rod. To increase stunning rod speed, air is vented ahead of the stunning rod. One end of the stunning rod is provided with a large diameter impact head of a material that resists deformation. The opposite end is made of a wear resistant material and is engaged by the catch. The extension distance of the impact head beyond the front end of the tool is limited and can preferably be adjusted. A specially shaped air-cooled internal bumper is provided to absorb the very high stunning energy of the stunning rod without damage.

A rotary union assembly for an automatic tire inflation system for maintaining the pressure in the tires on a tractor trailer or other vehicle having a source of pressurized air for communication with the tires. The assembly communicates the tires with the air source through the axle interior using a conduit having a rigid portion and a flexible portion that extends between a support in the axle spindle and a rotary union housing secured against the outside end surface of the hub cap so as to be outside the wheel lubrication compartment and rotatable with the hub cap. The two-component conduit allows for a durable seal with the support in the axle spindle and accommodates misalignment of the rotary union housing with the conduit support. Relief valves in the housing prevent excessive pressure buildups in the housing and in the hub cap in the event of an air leak.

Apparatus of components and methods for connecting and sealing a pothead to an electrical cable used in an oil well environment, are provided. Electrical leads are anchored in insulating members retained within the pothead. The leads inserted into passages formed through the insulating members each having an elliptically shaped portion. Channels are formed along the surface of the passages and along the circumference of the elliptically shaped portions. Boot seals are provided in the elliptically shaped portions and circumscribe the electrical leads. A hydrocarbon-based liquid is applied to the boot seals to cause them to swell and occupy the space between the leads and the insulators, including the channels.

In the case of a hinge device with an arm and with two head pieces mounted to pivot / swivel on the ends of the arm around respectively one axis, the head pieces are respectively joined to revolve with one of the two belt pulleys, which are circumscribed by a common traction belt on one circumferential surface, and at least one of the belt pulleys is not circular but preferably elliptical.

A vapor compression refrigeration and freezer system includes a compressor, a condenser, an expansion devise and an evaporator which includes an evaporator coil having an inlet and an outlet which coil is in heat exchange relation with an air medium along substantially the entire coil length. The inlet to the evaporator coil is in flow communication with an outlet of the expansion devise via an evaporator feedline. The expansion device can include a multifunctional valve that cooperates with the evaporator feedline to supply the evaporator coil inlet with a mixture of refrigerant vapor and liquid at a linear velocity and with relative amounts of vapor and liquid which are sufficient to provide efficient heat transfer along substantially the entire length of the coil, substantially reducing the build-up of frost on the evaporator coil and enabling the system to be operated without requiring a defrosting cycle over a substantially increased number of operating cycles compared to conventional refrigeration and freezer systems operating at the same cooling load and evaporating temperature conditions.

A fuel delivery system is provided with a fuel solenoid valve to minimize fuel leakage and evaporative emissions during diurnal cycles by preventing pressure buildup as the temperature of the fuel system rises. The fuel solenoid valve is located between a pressurized side of the delivery system and a fuel tank. In one embodiment, the fuel solenoid valve is closed when the engine is running or when the engine is off and the rail is hot. When the fuel rail cools down, the solenoid valve opens to bleed a desired amount of fuel thereby creating a fuel vapor space. Thereafter, during hot soak conditions of the diurnal cycles when the fuel rail is hot again while the engine is off, the pressure will rise due to the thermal expansion of the fuel and the created fuel vapor space minimizes further rising of the fuel pressure. Further, by adjusting the solenoid valve opening time, the pressure rising limit may be set at a desired pressure to minimize injector leakage.

An outer needle of a bone cement injection puncture needle has first side holes near the tip, and second side holes near the base. When an inner needle is removed from the outer needle and an inner tube is inserted into the outer needle in place thereof, a reduced-pressure passage is formed between the outer needle and the inner tube. When bone cement is injected into a bone, gas and liquid in the bone pass through the reduced-pressure passage and are discharged from the body, thereby preventing increased pressure in the bone. As a result, the bone cement can be prevented from leaking to outside of the bone.

In order to enable a continuous adjustment of the variable clearance space (1) of a reciprocating compressor (15), a threaded spindle drive with a threaded spindle nut (10) and a threaded spindle (9) is provided as an adjusting device (7), wherein the threaded spindle nut (10) is embodied as a plastic nut (20) with internal thread (24), the plastic nut (20) is arranged with an external thread (23) on an internal thread (22) of a nut carrier (21) of the threaded spindle nut (10), and the thread height (y) of the internal thread (22) of the nut carrier (21) and the thread height (x) of the external thread (25) of the threaded spindle (9) is respectively embodied with 50 to 80% of the radial thickness (d) of the plastic nut (20) and the plastic thickness is at least 15% of the thread pitch (z1) of the internal thread (24) at least in the region of the thread flanks (26) of the internal thread (24) of the plastic nut (20).

A paint circulation system (10) for automotive coating applications presents a paint supply source (18) and a pump (20) for pumping the paint. A circulation line (16) is fluidly communicated with the paint supply source (18) and circulates the paint at an operational pressure. A relief line (28) has a pressure relief device (30) adaptable for withstanding a predetermined pressure of the paint and to circulate the paint through the relief line (28) as the operational pressure exceeds the predetermined flow pressure. A pressure control mechanism is operatively communicated with the circulation line (16) and the relief line (28). The pressure control mechanism senses the operational pressure to continuously circulate the paint in the relief line (28) in response to a difference between the operational pressure and the predetermined pressure before the operational pressure exceeds the predetermined pressure thereby preventing the pressure relief device (30) from actuating.

An enteral feeding device, includes a system for delivering liquid nutrients to an enteral feeding tube. The device includes: (a) a container, having first, second and third openings; (b) a tip configured to be coupled to the container, the tip having an opening in fluid communication with the first opening of the container, the second opening of the container configured such that nutrient can be delivered to the second opening and the third opening configured to receive nutrient or to allow gas expelled from the patient (e.g., through burping) to flow there through.

A series of ball seat assemblies preferably used to open a series of sliding sleeves for formation access to a zone that is to be fractured allows sequential shifting of the sleeves with a single ball. The ball is guided by a tapered member with a lower outlet larger than the ball. The ball lands on the segments that are initially supported. Some leakage occurs between the segments but not enough to prevent pressure buildup to shift the sleeves. The tapered member closely fits to the segments to minimize leakage. Shifting the segments axially allows them to retract so the ball passes to eventually land on a non-leaking seat so that the zone can be fractured. The ball is recovered at the surface after passing the retracted segments and going through the undistorted opening in the tapered member.

A jar up, bump down hydraulic drilling jar is described. A hydraulic tripping valve arrangement permits the storage of large amounts of static force before releasing a hammer to strike an anvil surface with substantial force. The hammer is positioned on the mandrel and interacts with the anvil surface in the housing to deliver upward jarring forces, to the drill string. During a downward jarring movement, the tripping valve is opened to prevent pressure buildup and accidental downward jarring; thus, a single-acting drilling jar is formed.

An apparatus for making and administering two non-homogenous liquids to target tissue includes a spray comprising two syringes for containing the first and second non-homogenous liquid where the syringes are adapted to be removably coupled to an applicator. The applicator includes a pair of elongated tubes each having a tubular sheath at a proximal end, a distal end and a lumen in which the pair of elongated tubes are disposed. The apparatus includes a regulator module having an inlet port adapted for connection to a source of gas under pressure and a gas outlet port adopted for connection to the gas inlet port of the sheet. A vent gas inlet port is adapted for connection to a vent port of an endoscopic cannula where the regulator vents a quantity of gas from the endoscopic cannula approximately equal to a quantity of gas introduced at the gas inlet port of the sheet.

A fuel injector 10 for a Diesel engine has a plunger 12 and two control valves 20 and 30 for controlling the injection of fuel from the main supply cavity to the discharge port 52. Each control valve 20 and 30 are actuated through piezo-electric stacks 34 and 74 connected to a electronic variable voltage supply 33.

A free venting pipe and method of forming same, comprising a permeable tubular core member with at least one permeable hoop reinforcement layer around the core member; a substantially non-permeable membrane layer positioned outside of the hoop reinforcement layer and at least one permeable tensile reinforcement layer positioned outside of the membrane layer whereby a free volume annulus does not exist between any of the layers of the free venting pipe. The hoop and tensile reinforcement layers are comprised of a laminate construction.

The provision of improved venting in battery cells by way of better preventing pressure buildup in the cells. Via different variants of the present invention, the following advantages are achieved:Gas can escape from the cell without clogging the vent;gas buildup is avoided while the venting valve can operate in a consistently reliable manner;the solutions presented are sufficiently versatile as to be applicable to a variety of cells on the market; andthe risk of explosion is virtually eliminated.

A method and apparatus for reducing or preventing hydrocarbon emissions from an air induction system of an automotive vehicle during diurnal periods opens the fuel line to ambient fuel tank pressure when fuel pressure in the fuel line decreases due to cooling of the fuel.