294 results about "Trap door" patented technology

A drug dispensing device is comprised of an upper hopper having an upper opening for receiving a medicament and a lower opening. A lid covers the upper opening. A lower hopper having an upper opening and a lower opening in a bottom portion thereof is provided. The upper hopper defines a bulk storage chamber and the lower hopper defines a dispensing chamber. A rotatable dispensing disc is positioned in a lower portion of the dispensing chamber for dispensing medicament from the drug dispensing device through the lower opening in the lower hopper. A regulator is situated between the bulk storage chamber and the dispensing chamber for controlling the rate at which medicament moves from the storage chamber to the dispensing chamber. The regulator may take a variety of forms. In one embodiment, the regulator includes a valve for controlling the flow of medicament from the storage chamber to the dispensing chamber. The valve may include a member responsive to the volume of medicament in the dispensing chamber for controlling the position of the valve. The valve and member may include a trap door valve and a float, a butterfly valve and a rotatable arm, a guillotine valve and a movable arm, and a conical plunger and a wing extending from the base of the plunger. In another embodiment, the regulator may include a rotatable member having an opening therein. The rotatable member may include a cylindrical wall having an opening in a portion thereof, a plate having an opening therein, a cup shaped member defining an opening and a pair of rotatable members which together define at least one opening therein. The regulator may be configured such that the rate at which medicament moves from the storage chamber to the dispensing chamber is never zero. Further, agitating members may be provided which extend toward the upper hopper. Methods of operation are also disclosed.

A medication dispensing unit comprising a carousel defining a plurality of compartments, each of the compartments adapted to store a dose of medication is disclosed. The dispensing unit also comprises a housing that has a surface adapted to receive the carousel. The housing defines a receptacle and an access aperture that communicates between the receptacle and the surface that is adapted to receive the carousel. One of the compartments is positioned to communicate with the receptacle through the access aperture. The unit also comprises a dosing drawer that is positioned within the receptacle and communicates with the access aperture to receive a dose of medication from the compartment through the access aperture. The dosing drawer includes a normally closed trap door that, when opened, allows a dose of medication in the drawer to drop out of the dosing drawer. The dispensing unit comprises a recovery drawer that is positioned within the receptacle and communicates with the dosing drawer through the trap door, and receives a dose of medication from the dosing drawer when the trap door is opened. The medication dispensing unit also comprises means for rotating the carousel and a microcontroller that defines dosing period, determines that the patient has accessed the dosing drawer within a dosing period, and locks the recovery drawer.

An apparatus for accepting return of unused medical items is part of a system (10) used for automated dispensing and tracking of medical items within a medical facility. The apparatus includes a return drawer (52, 156) and a retrieve drawer (54, 158) which are opened responsive to signals received from a display terminal (26) which is networked with a computer (12) which includes a database (14). The return drawer includes a pocket (74, 160) therein. The pocket is accessible from outside of a housing (56) when the return drawer is moved to an open position. The pocket includes an opening (76, 156). The pocket is closed by a trap door (78, 170) when the return drawer is in the open position. Medical items to be returned (132, 184, 186) are placed in the pocket and the return drawer is closed. Upon the closing of the return drawer the trap door is moved to an open position by an actuator. The returned medical item passes from the pocket to a retrieve area (84, 188) in the retrieve drawer. Medical items are stored in the retrieve area until the retrieve drawer is opened by a user authorized to retrieve items from said retrieve area. The opening of the return and retrieve drawers is controlled responsive to the input of data at the display terminal corresponding to information in records (16) in the database.

A container including a rigid plastic pallet having a platform portion defining a central discharge port, a tubular cardboard sleeve supported at a lower edge thereof on the pallet, and a flexible plastic liner positioned within the sleeve. The liner includes an upper portion of uniform cross-sectional configuration conforming to the cross-sectional configuration of the sleeve and a lower portion of downwardly and inwardly tapering configuration terminating in a bottom liner opening positioned proximate the pallet discharge port. The effective combined height of the upper and lower portions of the liner, with the upper edge of the upper liner portion secured to the upper edge of the sleeve, is greater than the distance from the upper edge of the sleeve to the upper face of the pallet so that the sides of the lower portion may bulge outwardly in response to the loading of contents into the liner to at least partially fill the annular void defined between the sleeve and the lower portion of the liner with the liner fully extended. The pallet port is selectively closed by a trap door pivotedly mounted on the pallet. The pallet port is selectively closed by a trap door pivotally mounted on the pallet and the liner includes a discharge spout extending downwardly from the lower portion of the liner for passage through the pallet discharge port.

A storm water receptor having at least one inlet and an outlet positioned at a discharge level lower than the level of the intake provided with a novel, removable divider which divides the receptor into an upper chamber and a lower chamber, having a float-actuated trap door that permits water entering the upper chamber of the catch basin or field inlet to be diverted and flow into the lower chamber until the lower chamber is filled with liquid, at which point the entrance into the lower chamber closes, and water entering the upper chamber passes directly out of the upper chamber through the discharge pipe. In an alternative embodiment of the invention, the float-activated trap door can be replaced with a stationary, removable plate or ramp.

A system and method for a patch-like, self-contained substance infusion device (700) which provides hidden patient needles (760) that includes a rigid bladder (712) used with a non-distensible bladder film (740), such as a metallized film. The device (700) can be attached to skin via an adhesive surface and a push button (780) activation assembly can be used to remove an interlock (730), allowing a disk, or Belleville spring (735) assembly to apply constant pressure to a fluid reservoir assembly (710). The push button (780) assembly allows the release of one or more spring-loaded patient needles (760) into the skin, and establishes a fluid path between the patient needles (760) and the pressurized fluid reservoir thereby delivering an infusion into the skin. The push button (780) activation assembly further allows the release of safety mechanisms (794) which are driven by spring (793) and released by trap-door (790).

A stent pattern includes an improved portal region for repairing a main vessel and a side branch vessel forming a bifurcation. More particularly, the stent has rings aligned along a common longitudinal axis that are connected by links, where the stent has a proximal section, a distal section, and a central section (portal region). The number of rings and the expanded diameter of the sections are varied to create a “trap door” capable of expanding to a slightly larger diameter than the proximal section and the distal section of the stent. The configuration of the stent pattern of the portal region prevents the occurrence of portal overlap of immediately adjacent rings into the portal region during stent deployment. The stent is implanted at a bifurcation so that the proximal section and the distal section are in the main vessel, and the central section contacts at least a portion of the opening to the side branch vessel. A second stent can be implanted in the side branch vessel and abut the expanded central section to provide full coverage of the bifurcated area in the main vessel and the side branch vessel.

What is disclosed is a secure mailbox having at least an upper compartment with a plurality of sides, a front mailbox door hinge-ably coupled to a front edge of a side of the upper compartment, a locking and unlocking mechanism being adapted to lock the front mailbox door to the upper compartment and an unlocking activation mechanism coupled to the locking and unlocking mechanism; an upper rear mailbox door hinge-ably coupled to a rear edge of a side of the upper compartment, a locking and unlocking mechanism being adapted to lock the rear mailbox door to the upper compartment and an unlocking activation mechanism coupled to the locking and unlocking mechanism and a lower compartment having a lower, rear mailbox door hinge-ably coupled to a rear edge of a side of the lower compartment, at least one trap door being located between the upper compartment and lower compartment.

In an aircraft cabin floor adjacent to the cockpit, a trap door opens downwardly into a security cell, to trap a terrorist trying to enter the cockpit. Two walls with lockable airtight doors bound a safety buffer cabin between the cockpit and the passenger cabin. Sensors like seat occupancy sensors, motion detectors, video cameras and microphones provide data regarding the location, movement and activities of passengers to a system that evaluates the data to recognize unusual data situations indicating one or more escalation levels of suspicious or aggressive actions by passengers. Alarm signals and terrorist countermeasure devices such as fogging or tranquilizer gas generators, noise generators, high intensity blinding / glaring lights, a cabin lighting master shut-off, window darkening devices, and tranquilizer dart guns are actuated automatically by the evaluation system, or manually by a cockpit input device or a portable signaling device carried by a flight attendant.

A removable catch basin filter insert includes a filter container is fitted into a catch basin in the ground at the location where the stormwater exits the gutter and enters the stormwater sewer system. The removable catch basin filter provides pollution capture from stormwater while being easily cleaned. A hinged cover is included at the top of the filter insert to allow the captured pollutants to be evacuated through the use of a vehicle or being tipped nearly upside down by a mechanical arm. A hinged trap door is included at the bottom of the filter insert to allow captured pollutants to be evacuated through the bottom of the device and into a container. By capturing the pollutants with the removable catch basin filter insert before the pollutants enter the mainline storm drain system, clean storm drain systems are provided allowing for cleaner waterways.

A product metering napkin dispenser includes a housing defining a storage magazine for receiving a stack of folded napkins and a metering member that penetrates the stack in order to segregate a predetermined number of napkins from the remainder of the stack for dispensing. Preferred embodiments include gravity feed napkin dispensers. In various embodiments the metering member may include: a pivoting plate cooperating with a hinged trap door support surface; a rotating semicircular disk co-rotating with a support disk; or a reciprocating jaw assembly urging napkins through an aperture.

An endoscopic surgical instrument for passing a suture through tissue includes a first jaw member, a needle, and a capture feature actuable to grip and retain the suture after the suture has been passed through a tissue body. An actuation mechanism can both move the needle between retracted and extended positions, and move the capture feature between open and closed configurations, via a single actuation. The capture feature may be a trap door which is axially translatable relative to the first jaw member to overlap a portion of the first jaw member and trap a portion of the suture between the trap door and the overlapped portion. The first jaw member may be movable relative to a second jaw member to grasp a tissue body. The instrument can grasp a tissue body, pass the suture through the tissue, capture and retain the suture without being repositioned relative to the tissue.

Provided is an efficient verified fuzzy key word searching method based on a cloud data subcontract system. The efficient verified fuzzy key word searching method includes: by constructing the cloud data subcontract system, data owners operate a key generation module to generate index generated keys and encryption keys and operate an index building module to build indexes, authorized users operate a trap door generation module to generate a trap door set of all fuzzy key words, wherein fuzzy key words corresponding to accurate key words in concentrated mode are concentrated in the trap door set, the authorized users transmit the trap door set to a cloud server which starts a searching module to perform search on an index tree and return address sets and proof sets of all files containing all given fuzzy key words, finally the authorized user operate a verification module to check whether the cloud server is honest, wherein the fuzzy key words are successfully searched and the cloud server is honest if the verification passes, otherwise, the fuzzy key words are failed in search and the server is not honest. The efficient verified fuzzy key word searching method supports fuzzy key word searching and can verify the searching results.

The invention discloses a method for keyword searchable encryption based on bilinear pairs in cloud storage. The method includes the steps that firstly, system parameters are initialized; users are added; thirdly, encryption and security indexes for files are generated; fourthly, search tokens, relative to keywords, of the users are generated; fifthly, a cloud storage server is searched for keywords relative to ciphertexts; sixthly, the ciphertexts are decrypted by the users; seventhly, the users are logged out. According to the method, the authorized users can look for the encrypted files through a trap door connected with the keywords. The keywords used by the users for search cannot be known even by the cloud storage server, so that security of user information can be guaranteed; Compared with an existing scheme, the comprehensive efficiency of the aspects of communication and calculation cost, namely the aspects of the search speed of the size of the trap door, the encryption and search speed of the keywords, of the provided scheme is improved, and the method is suitable for multi-user environments.

A rock trap disposed in a feeder adapter of a combine directly behind a sickle bar of a combine header and in an area in front of a rearwardly directed conveyor located for receiving cut crop from transversely directed conveyor of the header. The rock trap has a trap door which can be selectively opened so as to drop beneath the header rocks collected therein.

The invention discloses an efficient verifiable multi-keyword sequencing searchable encryption method supporting a preference search and a logic search. The encryption method comprises the following steps that a data owner encrypts a document, constructs a cryptogram index based on a document collection, generates summary information of the document by utilizing a secret key and the content of thedocument, and then sends a cryptogram document, an encrypted index and the summary information to a cloud server; a data user shares the information of the secret key, which is generated by the dataowner, generates a query trap door according to a query, and sends an encrypted query trap door and the number K of to-be-obtained documents to the cloud server; the cloud server can execute safe inner product operation after receiving the cryptogram index and the query trap door, searches for K documents most relevant to the query of the user, sequences according to relevant values among the K documents and the query, then generates verification objects, and finally returns the most relevant K documents and the verification objects to the data user, and the data user verifies the correctnessand completeness of a return result through a verification algorithm.

A mail sortation system that can process mail, either letter or flat, from random order to delivery point sequence (DPS) order, in a single sortation pass. The system has a first sortation assembly comprising a plurality of individual open-topped receptacles into which mail is received, each receptacle having a trap door for selectively dumping its contents. A second sortation assembly comprises a linearly-translating conveyor positioned beneath the first sortation assembly, and an open topped bin travels along the conveyor to gather mail from the first assembly in a DPS sequence. A third sortation assembly comprises a linearly-translating conveyor arranged parallel to and directly beneath the second sortation assembly, and a plurality of mail bins mounted atop for receiving DPS-sorted batches from the second assembly.

What is disclosed is a secure mailbox having at least an upper compartment with a plurality of sides, a front mailbox door hinge-ably coupled to a front edge of a side of the upper compartment, a locking and unlocking mechanism being adapted to lock the front mailbox door to the upper compartment and an unlocking activation mechanism coupled to the locking and unlocking mechanism; an upper rear mailbox door hinge-ably coupled to a rear edge of a side of the upper compartment, a locking and unlocking mechanism being adapted to lock the rear mailbox door to the upper compartment and an unlocking activation mechanism coupled to the locking and unlocking mechanism and a lower compartment having a lower, rear mailbox door hinge-ably coupled to a rear edge of a side of the lower compartment, at least one trap door being located between the upper compartment and lower compartment.

The invention relates to a door (8) designed to be inserted between a cockpit and a cabin of an aircraft, the door comprising a cockpit side (8a) and a cabin side (8b). According to the invention, the door comprises at least one trapdoor (22) capable of closing off a passageway (20) passing through the door and secondly being opened towards the cabin side, the door also comprising a locking / unlocking mechanism (30) of the trapdoor arranged on the cockpit side and that can automatically unlock the trapdoor when the difference between a cockpit pressure and a cabin pressure corresponding to the air pressures applied on the cockpit side and the cabin side of the door respectively is greater than a predetermined value.

A remotely activated door-opening mechanism is provided for a cage trap having an animal enclosure, preferably a cage trap as disclosed in U.S. Publ. No. US2008 / 0115405. The mechanism is mounted outside the enclosure of the trap and is preferably remotely activated by an IR or RF transmitter to open a door of the trap and release a trapped animal when the operator is at a safe distance away. The mechanism may also be manually set with a time delay and may be associated with either a main entry door to the trap or with a secondary escape door located at an opposite end of the trap.

The embodiment of this invention is disclosed, which describes a cat litter box, which will allow cat owners to change litter without having to touch or manipulate the soiled litter. The device consists of a box within a box. The inside box is made with swinging trap doors on the bottom of the interior part of a shell of the device. This allows the cat litter to flow freely from the interior shell to the bottom half of the exterior shell. The bottom half of the exterior shell contains a garbage bag, which catches the soiled litter and allows easy disposal. The doors, which would swing open as the cat litter box is lifted upwards, are hinged so they will freely open and close in normal operation.

According to the present invention, a secret key cryptosystem and tamper-proof hardware are used to realize a pseudo public key cryptosystem at a low cost. A trap-door one-way function is substantially realized with the use of tamper-proof hardware. Each user performs communication using equipment provided with hardware having the same capabilities described below. Such hardware retains association between an ID and a key. In response to a request from a user, the hardware issues and stores an ID, and it can perform decryption and generation of a MAC (message authentication code) with a key associated with the ID. A user publishes his ID. When performing encryption, a message sender encrypts a message using the published ID. A third person can perform decryption with the ID only by analyzing the mechanism in the hardware. However, the hardware has a capability of destroying itself when such an act is attempted.

Disclosed is a non-lethal animal trap that comprises a housing, a mechanically actuated trap door, a motion sensor, and a microprocessor controlled tripping mechanism. The trap includes a pathway having a first and second entrance and a first and second trap door. The pathway includes animal bait therein, whereabove a motion sensor detects objects and motion within the pathway such that the entrances to the pathway are closed by the trap doors. The motion sensor sends signals to the microprocessor, which in turn activates an electrical latch mechanism that releases the trap door mechanism from its set position to its closed position. Once closed, each trap door includes a brace that prevents the animal from forcibly opening the door. The animal is then trapped for later disposal or relocation. A plurality of indicator lights provides notification of the device operational state, including device standby, triggered, and trapped animal notification.

The invention discloses an attribute-based searchable encrypted electronic medical record system and an encryption method. The system comprises a key distribution center and a cloud storage center, wherein the key distribution center generates public parameters and a master key to initialize the system; the key distribution center generates and distributes keys containing user attributes to users;a data owner sets an access strategy before uploading medical record data, encrypts the data, and then uploads the data to the cloud storage center; a data visitor generates a trap door according tokeywords and the keys, and provides a query request to the cloud storage center; and after receiving the query request, the cloud storage center determines to return corresponding encrypted data to the data visitor according to the trap door and keyword ciphertexts. According to the scheme of the invention, the difficulty of key management in a multi-user environment can be reduced, data users canbe supported to accurately query the keywords of the ciphertexts, guessing attacks of the keywords can be resisted, and the leakage of privacy data can be effectively prevented.

A cat trap and cage for capturing, transporting, and temporarily housing stray, unclaimed, or feral cats. The trap is an elongated, box-shaped enclosure having a trap door at one end and a guillotine type sliding door at the other end. The trap door is mounted on hinges attached to the top wall of the cage and actuated when the cat steps on a rectangularly shaped pedal in the floor of the enclosure, causing the trap door to rotate to a closed position in order to trap the cat inside the enclosure. The guillotine door is used to obtain normal access to the cat, and the trap may be locked end to end with a litter box having a similar guillotine door. The trap door includes a detachable "squeeze" panel which may be used to urge the cat against the guillotine door at the other end of the enclosure.

There is described an improved one-way door for a humane animal trap of the type comprising a box-shaped enclosure having an opening at one end, and a hinged one-way door adapted to close said opening and also to swing freely upward into the enclosure to permit entry into the enclosure by an animal, then to fall back under the force of gravity to a closed position that traps the animal within the enclosure. The improved trap door has an upper portion comprising apertures sufficient to enable ample airflow into the trap and a weighted lower portion that speeds the drop of the door and that also lowers the center of gravity of the door, and that of the trap as a whole, and thereby functions to enhance the stability of the trap to reduce trap overturns and animal escapes. The apertures in the upper portion of the door provide the animal with an ample supply of air to reduce the stress it is subjected to prior to release. The metal and / or hard plastic composition of the door ensures that the animal will not gnaw a hole in the door to facilitate its escape.

The invention discloses an identity-based and hidden matrix-constructed fully homomorphic encryption method. The method includes the following steps of: parameter generation; trap door generation; key generation; encryption; decryption; and homomorphic operation. The security of a traditional public key encryption method is threatened under a quantum computer environment. The method of the invention can resist the attack of a quantum computer based on solving shortest vector problems in lattices. According to the method of the invention, user identity is directly adopted as a public key, and homomorphic operation can be performed on cipher text information.