94 results about "Flapper" patented technology

A three degrees-of freedom robotic flapper includes a fuselage, the fuselage housing motors and driving trains, a left wing attached to the fuselage, and a right wing attached to the fuselage, the left wing and the right wing configured to perform a wing flapping motion, a wing twisting motion and a wing folding motion.

A snowmobile hitch has a pintle hitch portion and a flapper hitch portion. A hitch body has a rearward projection pintle hitch horn and a portion that pivotally supports a pintle hook movable toward and away from the horn for opening and closing the pintle hitch portion. The hitch further having a V-shaped flapper that is pivotally engaged with the hitch body by way of one or may polymeric spacers providing friction reduction and noise attenuation when moving the flapper, as well as positional fixation. The spacers having a detent for engaging with respective projection on the hitch body. The hitch further having a latch with a pivot pin, a locking pin portion, and a handle. Manipulating the handle can unlock the pintle hitch hook from one of the open and closed positions and move the hook to the other of the open and closed positions.

A flapper holder tool may have a tubular body defining a bore extending a length from a first end to a second end. Additionally, a lip may extend radially outward at the first end. Further, an internal fish neck may be provided on an inner surface of the tubular body. The second end of the tubular body may be configured to engage a flapper of a tubing-retrievable subsurface safety valve.

A curved flow tube can be positioned in a tubing string deployed downhole in a wellbore to slow a closure of a flow valve in the tubing string. The tubing string can be deployed in the wellbore to transport wellbore fluid. The flow valve can be coupled to the tubing string. Additionally, the flow valve can include a flapper and the flow tube. The flapper can be positioned to control the wellbore fluid transported through the tubing string. The flapper may be adjusted between an open position and a closed position. The flow tube can include a downhole end that has a curvature to slow a closure rate corresponding to adjusting the flapper from the open position to the closed position.

A scoop collector for court balls includes a container with an open front into which balls can roll through the open front. A push handle is operably connected to the container. A ball retaining device allows the balls to roll into the container and prevents the balls from rolling out of the container. The ball retaining device can include a plurality of flappers, an elastic cord, and / or a roller that extend(s) across the open front of the container. The container can be translucent and can be removably supported on a frame. The push handle can be secured in a fixed position by a hook. Wings can be provided adjacent the open front of the container to funnel balls into the container.

An adapter is configured to be disposed on the inlet of an oil tank of an aircraft engine. The adapter includes a plug between the adapter and the exterior, and a flapper between the adapter and the oil tank. An adapter cavity located between them is set to negative pressure during flights. When the aircraft is back on the ground, this negative pressure has to be counteracted to open the plug, which can make the opening operation difficult. The adapter includes a lever that counteracts the negative pressure in the cavity of the adapter to allow easy opening of the plug with limited force.

1. The name of the design product: air baffle valve. 2. The use of the design product: control element for air baffle valve, which is used to realize the functions of cut-off, conduction and control of flow in the system. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

A toilet flapper valve assembly is provided. The flapper valve assembly has a flapper, cone and an adjustment dial. The adjustment dial controls the flow of water into and flow of air out of the cone. Adjustment of the adjustment dial relative to the cone simultaneously adjusts the flow of water into and air out of the cone.

To provide a standing lock device of a tip end side flapper in a platform of an underfloor storage type lifting device for a vehicle which is simple and robust in construction, has smooth and reliable operation, and ensures high safety and reduces cost.SOLUTION: In a platform of an underfloor storage type lifting device for a vehicle on which a tip end side flapper, standing automatically and locked at required angle except when grounding on a road surface, is deployed, it deploys by pivotally supporting a hook, providing a tip end engagement part engaging with the tip end side flapper on a tip end, to a tip end part of the platform so as to make it possible to rotate and at the same time a push plate linking with the hook is deployed on the tip end part of the platform so as to make it possible to rotate in a direction opposed to an urging direction by linking to a storage box when the platform is stored in the storage box deployed on the vehicle and it is configured so as to engage and lock the tip end side flapper by operation of the push plate and to release engaging and locking of the tip end side flapper on the contrary when the platform is pulled out of the storage box.SELECTED DRAWING: Figure 8

The application provides a gas sealing conveying screw, relates to the technical field of conveying screws, and aims to solve the technical problem in the prior art that the prior art cannot simultaneously realize material conveying and effective isolation of atmospheres in front and back spaces, and can only set rotary valves or flapper valves as gas lockers in front and back of the screw conveyor to prevent mutual flow of atmospheres in front and back, which needs to occupy a relatively large space, increases equipment, increases control logic, and has an undesirable effect. The device comprises a conveying main shaft, an outer cylinder, a spiral blade and a compression sealing area. The conveying main shaft, the outer cylinder, the spiral blade and the compression sealing area are used for actively isolating atmospheres when conveying materials containing volatile harmful gases, blocking the random flow of atmospheres, reducing the space occupied by the material conveying equipment, not needing to increase auxiliary equipment and control logic, improving the atmosphere isolation effect, preventing the mixing of harmful gases and air, and reducing the safety hazards of material conveying.

Embodiments of this disclosure presents a robotic end-effector assembly tailored for the efficient handling of lid stacks during palletizing and depalletizing procedures. The assembly is thoughtfully divided into three essential sections, optimizing its overall functionality. In the lid stack frictional grip section, a pair of gripper flappers, maneuvered by pneumatic cylinders, securely grasp the lid stack. Complementing this, support rollers, oriented at a 90-degree angle to the gripper flappers, maintain stable frictional grip, minimizing movement. The lid stack bottom stopper section utilizes pneumatic cylinders to actuate a stopper plate, ensuring robust bottom support for the lid stack. Additionally, the lid stack top pressing section employs a pneumatic cylinder-activated cap holder to apply top pressure, preventing lid dislodgment during rapid robot movements. These synchronized sections enhance lid stack palletizing and depalletizing with precision and reliability, streamlining processes and reducing errors.

A flapper assembly for a flush valve for a toilet is provided. The flapper assembly may be reconfigurable to work with different sized or configured flush valve bodies. Further, the flapper assembly is configured to avoid the pull chain getting tangled around various components of the flapper assembly. Further yet, the flapper assembly is configured to minimize a spacing between a pivot point / axis about which the seal member may pivot relative to the frame of the flapper assembly and the seal face of the seal member.

The present application relates to the technical field of oil exploitation, in particular to a blowout preventer for oil drilling and a use method thereof, which comprises a main pipeline, an inclined surface block is fixedly connected to the inner side wall of the main pipeline, a flow pipeline is fixedly connected to the side surface of the side of the inclined surface block away from the inner side wall of the main pipeline, two sealing blocks are arranged on the outer side wall of the main pipeline, the two sealing blocks are symmetrically arranged and are connected to each other through bolts, and the bolt connection portions of the two sealing blocks are sleeved and communicated with the side wall of the main pipeline. The flow pipeline can be closed by using the first and second flappers, and in the process of closing, the flowing liquid flows to the upper port of the main pipeline through the plurality of through holes, and the force acting on the first and second flappers is much smaller than the force acting on the flow pipeline directly closed by the liquid impact.

A swing check valve includes a valve body that defines a fluid flow path from a fluid inlet to a fluid outlet; a flapper coupled to the valve body and moveable between a first position to allow fluid flow in a primary flow direction through the fluid flow path and a second position to impede fluid flow in a secondary flow direction through the fluid flow path; a seat coupled to or integral with the valve body within the fluid flow path such that the flapper is apart from a face of the seat in the first position and abuts the face of the seat in the second position, the seat including a groove formed in the face; and a dampening ring positioned within the groove and including an interface aligned with the face of the seat such that the flapper abuts the interface in the second position.

A tubing retrievable safety valve assembly and related methods are disclosed herein. The assembly includes a primary flapper, a secondary flapper, a flow tube, and a protective sleeve. The flow tube is shiftable between a downhole position that holds the primary flapper in an open position and an uphole position that allows the primary flapper to move to a closed position. The protective sleeve, when positioned in an uphole position, holds the secondary flapper valve in an open position. The protective sleeve is shiftable to a downhole position to allow the secondary flapper to move to a closed position, for example, upon failure of the primary flapper.

Disclosed are an integration box and a pneumatic high vacuum flapper valve, including a box body and a cover plate covering the box body. An integration box chamber is formed between the box body and the cover plate, a solenoid valve and a sensor assembly are provided in the integration box chamber, one side of the integration box is provided with a through hole, an integration box air inlet pipeline and an integration box air outlet pipeline, the solenoid valve is communicated with an outside air respectively through the integration box air inlet pipeline and the integration box air outlet pipeline, an external trigger signal is sensed by the sensor assembly by the through hole, and an electrical connector is provided on the other side of the integration box for electrical connection of the solenoid valve and the sensor assembly with the outside.

The present invention provides an automatic plate stacking adjustment device and control method, characterized by comprising: a stacking trolley, a plate storage tray, two sets of flappers, and a laser rangefinder; the plate storage tray is placed on a platform on top of the stacking trolley, with its edge parallel to a working reference line; at least four laser rangefinders are arranged around the stacking trolley and aligned with the plate storage tray; the two sets of flappers are respectively mounted via fixed beams; the fixed beams are parallel to the working reference line and have a degree of freedom of movement perpendicular to the working reference line; the flappers have a degree of freedom of translation on the fixed beams; each of the fixed beams and flappers is driven by a motor and connected to an encoder; the motor, laser rangefinder, encoder, and flappers are respectively connected to a controller. The device improves the production efficiency of the shearing line and shortens the time required to manually adjust the positions of the plate storage trays and flappers.

1. The name of the design product: drip irrigation tape baffle disc. 2. The use of the design product: when used for drip irrigation tape, the baffle disc prevents the tape from scattering on both sides of the shaft and plays a guiding role. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.

TURBOJET ENGINE COMPRISING A NACELLE EQUIPPED WITH REVERSER FLAPPERS The invention relates to a dual-flow turbojet engine (100) with a nacelle (102) having a longitudinal axis (X) and comprising a front frame (206), a movable cowl (207a), at least two reverser flaps (104) articulated on the movable cowl (207a) and an operating mechanism (250) with a first arm (252) articulated on the front frame (206), a second arm (258) articulated on the movable cowl (207a), a third arm (256) mounted articulated on the second arm (258), a fourth arm (254) articulated on the third arm (256) and the first arm (252), two fittings (260) articulated on the third arm (256), and a connecting shaft (264) articulated on the fitting (260) where a shaft (262) of each reversing flap (104) is articulated on the connecting shaft (264) by a ball joint (264b). With such an arrangement, the space requirement is reduced. Fig. 4

A check valve having a valve body (101), a valve cover (102), and a flapper valve assembly. The valve body comprises a valve housing (104) and a central bore (105) formed through the valve housing. The central bore has at least a first bore section (126), a second bore section (127), and a third bore section (128). A transition from the second bore section to the third bore section is radiused such that the inner surface of the central bore at the transition is a continuous surface. The flapper assembly is disposed in the central bore of the valve body and comprises a flapper (132), a valve seat (136), and a hinge.

The present disclosure relates to a flapper rearrangement tool to rearrange a broken flapper inside a tubing retrievable subsurface safety valve. The tool comprises a substantially cylindrical guiding portion having a first radius and a longitudinal axis. Further the tool comprises a tip portion at a first end of the tool for establishing initial contact with the broken flapper, wherein the tip portion is radially displaced outwards relatively to the longitudinal axis by a second radius. Moreover, the tool comprises a rearrangement portion for rearranging the broken flapper, wherein the rearrangement portion is arranged between the tip portion and the guiding portion and provides a contact surface for moving the broken flapper. Furthermore, the tool comprises a fastening means at a second end of the tool for fastening the tool to a support means that allows the tool to be inserted into the borehole.

The utility model belongs to the technical field of check valves, and discloses a horizontal baffle check valve which comprises a baffle check valve body, a filter assembly is arranged in an inner cavity of the baffle check valve body, a pop-up structure is arranged in the filter assembly, the filter assembly comprises a connecting ring, and the connecting ring is connected with the baffle check valve body. The outer side of the connecting ring is movably connected with the inner wall of the baffle check valve body in a sleeved mode. The connecting ring and the filter screen plate are arranged, the connecting ring is buckled out of the inner cavity of the valve body through the clamping groove, and when the filter screen plate is moved out of the inner cavity of the valve body, the push rod and the movable block are driven to move upwards through the elastic force of the second spring, so that the filter screen plate is popped out of the inner cavity of the groove, and an operator can conveniently take the filter screen plate out of the groove; and meanwhile, the cleaned filter screen plate is pressed into the groove, and the filter screen plate is driven to reset by resetting the connecting ring, so that the filter screen plate is convenient to disassemble and assemble by an operator, and the cleaning efficiency is improved.

A method of injecting gas into a well can include flowing the gas through a gas flow passage extending through a housing connected to a wellhead installation, the gas thereby flowing through the wellhead installation and into an annulus in the well, and maintaining fluid pressure applied to a piston of a gas injection valve while the gas flows into the annulus. A gas injection system can include a housing having a gas flow passage extending longitudinally through the housing, and being configured to connect to a wellhead installation, and a gas injection valve including a pivotably mounted flapper closure member. The flapper closure member in an open position permits gas flow between the gas flow passage and the wellhead installation, and the flapper closure member in a closed position prevents the gas flow from the wellhead installation through the gas flow passage.

A safety valve for a wellbore for production of hydrocarbons from a surrounding subsurface formation includes a flow tube through which a flow of fluids from the surrounding subsurface formation downhole to a surface of the wellbore, wherein the flow tube comprises a lower end through which the flow of fluids is to enter the flow tube, wherein the flow tube is composed of metal, except for at least a cut out section of the lower end that is composed a polymeric material. The safety valve includes a flapper configured close the safety valve by changing positions to cover an opening at the lower end of the flow tube such that an impact force of the closing on the flapper onto the flow tube is at least partially absorbed by the polymeric material.

A check valve assembly for a supply tube. The check valve assembly includes a hinge pin, a first flapper, and a second flapper. The first flapper is pivotally coupled to the second flapper by the hinge pin. The check valve assembly also includes a stopper positioned between the first flapper and the second flapper. The stopper is configured to limit movement of the first flapper and the second flapper. The check valve assembly also includes a plate assembly positioned downstream of the stopper. The plate assembly is configured to disrupt a vortex formed in a fluid flow through the first flapper and the second flapper.

An adapter is configured to be disposed on the inlet of an oil tank of an aircraft engine. The adapter includes a plug between the adapter and the exterior, and a flapper between the adapter and the oil tank. An adapter cavity located between them is set to negative pressure during flights. When the aircraft is back on the ground, this negative pressure has to be counteracted to open the plug, which can make the opening operation difficult. The adapter includes a lever that counteracts the negative pressure in the cavity of the adapter to allow easy opening of the plug with limited force.

The invention relates to the technical field of manual vacuum flapper valves, in particular to a manual vacuum flapper valve which comprises a valve body provided with a mounting opening, a first flange connector and a second flange connector. The hand wheel assembly is arranged outside the valve body; the valve plate is movably arranged in the valve body; the sealing seat is arranged in the valve body, and a mounting channel is formed in the sealing seat; the first end of the transmission rod penetrates through the mounting opening and extends into the valve body, and the second end of the transmission rod is connected with the hand wheel assembly; the lead screw is movably arranged in the valve body, and the lead screw penetrates through the mounting channel; one end of the lead screw is in threaded connection with the transmission rod, and the other end is connected with the valve plate; wherein the lead screw is provided with a first limiting structure, the mounting channel is provided with a second limiting structure, and the first limiting structure and the second limiting structure are matched with each other to form a rotation restraining mechanism which is used for limiting the lead screw to circumferentially rotate relative to the sealing seat.

A flapper assembly for a flush valve as well as method of assembly are provided. The flapper assembly includes a frame and multiple buoyancy assemblies attachable to the frame so as to adjust the buoyancy of the flapper assembly. The flapper assembly kit may have adjustable legs attachable to the frame. The flapper assembly kit may have multiple seal members for use in sealing with different sized / shaped valve seats of different sized flush valves.

The invention discloses a low-static-consumption single-nozzle baffle type pressure servo valve which comprises a sleeve, a coil assembly, a magnet assembly, an armature assembly, a nozzle baffle stage and a slide valve stage. The baffle can be tightly attached to the oil inlet nozzle by adjusting the position of the magnetic gap screw, oil entering from the oil inlet P reaches the front end of the oil inlet nozzle through the main oil filter and is cut off by the baffle, and at the moment, when the servo valve is in a zero-position non-working state, the pilot level almost has no leakage; when a product is in a working state, the number of oil inlet nozzles is reduced by half, and the pilot-stage internal leakage rate is greatly reduced. The anti-pollution capacity of the slide valve stage is obviously improved, and the oil return pressure stability is good.