54results about How to "Reliable attraction" patented technology

A vacuum suction apparatus is equipped with a body having a supply port, and a pad provided on a lower portion of the body to which a workpiece can be attracted under suction. The pad is constituted from a base plate accommodated in a space of the body, a flexible intermediate plate provided on a lower portion of the base plate, and a suction sheet body disposed on a lower portion of the intermediate plate and having a sheet that attracts the workpiece under suction. In addition, the base plate, the intermediate plate and the suction sheet body are stacked along an axial direction of the body. The rigidity of the base plate is highest, whereas the rigidities of the intermediate plate and the suction sheet body are lower in this order, and the flexibilities thereof are greater in this order from the base plate.

The invention provides a chain conveyor system capable of avoiding damages and vibration noise by securely attracting and retaining metallic magnetic articles in inclined conveyor lines or slippery wet conveyor lines and of providing ready transfer or relay of the articles to other conveyors or equipment also in a conveyor terminal carry-out area. The chain conveyor system comprises a conveyor chain having article-attracting magnet pieces for attracting and retaining articles on loading surfaces thereof and an article-separating device that is disposed coaxially with a sprocket wrapped by and engaging with the conveyor chain and has article-separating magnet pieces that cut the attraction of the article-attracting magnet pieces with the articles on an outer circumferential parts of a free roller.

A recording apparatus includes a recording unit for recoding on a recording medium by ejecting ink, a conveyor belt for transporting the medium, first and second electrode groups including a plurality of electrodes inside the conveyor belt, a charging unit for charging the first and second electrode groups to provide a potential difference between the first and second electrode groups in order to generate an electrostatic force for attracting the medium to the conveyor belt, a duplex transport unit for turning over the medium transported by the conveyor belt from a first surface upward to a second surface upward and delivering the medium to the conveyor belt with the second surface upward, and a control unit for controlling the charging unit so that a difference between the potentials of the first and second electrode groups during transportation of the medium with the second surface upward is different from that during transportation of the medium with the first surface upward.

The present invention is relates to a polishing method for polishing a semiconductor wafer (W) by pressing the semiconductor wafer (W) against a polishing surface (10) with use of a top ring (23) for holding the semiconductor wafer (W). A pressure chamber (70) is defined in the top ring (23) by attaching an elastic membrane (60) to a lower surface of a vertically movable member (62). The semiconductor wafer (W) is polished while a pressurized fluid is supplied to the pressure chamber (70) so that the semiconductor wafer (W) is pressed against the polishing surface (10) by a fluid pressure of the fluid. The semiconductor wafer (W) which has been polished is released from the top ring (23) by ejecting the pressurized fluid from an opening (62a) defined centrally in the vertically movable member (62).

A magnetic device for attracting and retaining a fastener which has a bit, a generally ring-shaped keeper having a bottom surface, at least some portion of which bottom surface is magnetized, at least one pair of magnets, each pair of magnets having two magnets with alternating poles, adjacent to the magnetic bottom surface of the keeper and arranged around the bit such that an even number of magnets with alternating poles is arranged around the bit, and a non-magnetic holder that secures the keeper and the magnets and surrounds the bit. The magnets provide magnetic flux to the keeper and the fastener. Each pair of adjacent magnets provides a closed magnetic flux path through a first magnet of the pair, the keeper, a second magnet of the pair, and the fastener. The location of the magnetic device along the bit may be adjustable or fixed.

The invention discloses a locust catching and killing method. The method is characterized by including the following steps that (1) a group of locust catching killing devices is arranged in a area where locusts gather, and a layer of barrier net is arranged in a locust killing box in each locust catching killing device; groups of heaters and fixing sleeves are vertically arranged on inner surfaces of lower box bodies of the locust killing boxes on left sides of the barrier nets respectively; a bristle brush is inserted into each fixing sleeve, and sex pheromone adheres to the bristle brush; locust outlets are vertically designed in lower box walls of the locust killing boxes on right sides of the barrier nets, and locust collecting parts are fixed on the lower portions of the locust outlets; (2) an inspecting person inspects the locust killing device one by one at set intervals; (3) the locusts in the locust collecting parts that are taken down at the step (2) are totally killed. According to the locust catching and killing method, the locusts are allured by means of the sex pheromone on the bristle brush and infrared radiation during heating of the heaters, the locusts can be reliably and effectively allured, finally, the locusts are gathered and totally killed, the locust killing is convenient and efficient, locust catching killing costs are quite low, and the labor intensity of workers is extremely low.

A screwdriver bit assembly includes a magnetic ring mounted in a front end of a sleeve hole of a sleeve. A retaining ring is made of a material more rigid than the sleeve, is mounted in the sleeve hole, and is located behind the magnetic ring. A screwdriver bit includes an insertion end, an extending section behind the insertion end, a flange section behind the extending section, and a clamping section behind the flange section. The front end of the screwdriver bit extends through the sleeve hole of the sleeve, the retaining ring, and the magnetic ring. The insertion end extends beyond the sleeve and is located in front of a front end face of the sleeve. The flange section abuts the retaining ring. The clamping section is held by a holding device mounted on the sleeve, providing a holding force towards a longitudinal axis of the sleeve hole.

The present invention provides an electromagnetic tripping device, this electromagnetic trip device is used for tripping a circuit breaker by detecting an overcurrent in the main circuit and is so structured that an operation arm (14a) formed on the armature (14) of an electromagnet unit (7) is faces a trip arm (8a) of the trip crossbar (8), the operation arm presses the trip arm of the trip crossbar in the attracting operation of the electromagnet, and thus the breaker is tripped by releasing a latch receiver (9). By changing the force application point between the operation arm and the trip arm from a point P1 to a point P2 in line with the change of an air gap between the armature and the electromagnet in the attracting operation of the electromagnet, the load weight applied to the armature is kept low in the first half causing small attraction, and the force application point is moved to the point P2 in the second half increasing the attraction of the electromagnet so that the trip crossbar is driven to a release position.

The invention discloses a method for trapping and killing grasshoppers. The method is characterized by comprising steps that a, a group of grasshopper trapping and killing devices is arranged in grasshopper gathering regions, a metal stopping net is arranged in a grasshopper killing tank of each grasshopper trapping and killing device, a group of heater and fixing sleeve is arranged on a lower tank plate of each grasshopper killing tank and is positioned on the left of the corresponding metal stopping net, a brush stained with sex pheromone is inserted in each fixing sleeve, a grasshopper outlet is vertically formed in the lower tank plate of each grasshopper killing tank and is positioned on the right of the corresponding metal stopping net, grasshopper collecting components are fixed onto the grasshopper outlets, exiting preventive assemblies are arranged in the grasshopper killing tanks, and each exiting preventive assembly comprises horizontal beams and exiting preventive sheets; b, inspection staffs inspect grasshopper killing devices one by one every once in a while; c, the grasshoppers in the grasshopper collecting components are completely killed. The method has the advantages that the grasshoppers are attracted by the sex pheromone on the brushes and infrared radiation when heaters generate heat, and ultimately enter the grasshopper collecting components from the grasshopper outlets, accordingly, trapped and killed grasshoppers can be collected, and the grasshoppers can be killed conveniently and efficiently.

The invention provides a separating supply device with a head steel bar which can lead the head steel bar to be easily fetched out from a supporting hole on a fetching out position and improves the attracting maintaining rate in the supporting hole of the head steel bar. The invention is provided with a separating plate (9) which can rotate in hopper part (3) of the head steel bar that can store a plurality of small screws. On the outer circle part of the separating plate, a plurality of supporting holes (9b) that can be embedded with the head steel bar are collocated in equal distance. The supporting holes (9b) on the corresponding position of the head steel bar stored in the hopper part are communicated with an air absorption hole (5a) used for maintenance; besides, the supporting hole (9b) on a fixed fetching out position is communicated with an air absorption hole (5b) used for confirmation. Air is pumped in respectively from the absorption holes used for maintenance and confirmation. When maintaining the head steel bar in the supporting holes (9b) arranged on the fetching out position, the air absorption from the absorption hole used for confirmation and the air absorption from the absorption hole used for maintenance is continued.

The invention discloses a rotary magnetic disk combined-type soil magnetic enrichment and purification in-situ recovery device which is provided with a rack. The rack is provided with travelling wheels. A lifting device and an aeration stirring device are arranged on the upper portion of the rack. A rotary magnetic disk is arranged below the lifting device. The rotary magnetic disk is connected with a variable frequency motor through a chain wheel transmission device. The rotary magnetic disk is made of a neodymium iron boron rare earth permanent magnetic material, and a stainless steel housing is arranged outside the magnetic disk. A small-sized washing water circulation system is arranged at the top of the rotary magnetic disk. The small-sized washing water circulation system is composed of a water pump, a water tank and a spraying pipe. A magnet block is arranged inside the water tank, and thus sedimentation of the magnetic material can be accelerated. The aeration stirring device is composed of an air compressor and a stirring pipe. The air compressor is arranged on the rack, and the stirring pipe is arranged on the rotary magnetic disk. By means of the rotary magnetic disk combined-type soil magnetic enrichment and purification in-situ recovery device, magnetic particles in paddy field mud can be sorted out directly, position change of the mud is needless, the recovery rate is high, and the economic benefits are also high.

The invention discloses a magnetic attraction type railway vehicle anti-overturning device. The device comprises a device mounting base, an electromagnet mounting base, an air cylinder and an electromagnet, the device mounting base is arranged in the middle of a railway vehicle bogie frame, one end of the air cylinder is connected with the device mounting base, and the other end of the air cylinder is connected with the electromagnet mounting base; one end of the electromagnet installation base is connected with the air cylinder and connected with the device installation base through a positioning sleeve, and the other end of the electromagnet installation base is connected with the electromagnet; and the air cylinder extends or contracts along with normal operation or overturning accidents of the railway vehicle, so the electromagnet installation base and the electromagnet are driven to move in the direction of the positioning sleeve. The device is small in size, low in cost, high in reliability, easy to maintain and capable of well improving the safety performance of the rail vehicle under the overturning accident.

The invention discloses a locust trap. A barrier mesh is disposed within a trap box. A group of heaters and fixing sleeves are vertically arranged on the inner surface of the lower portion of the trap box on the left of the barrier mesh. The heaters and the fixing sleeves are arranged side by side with one before another; the heaters are arranged on the right of the fixing sleeves; a brush is inserted into each fixing sleeve and dipped with sexual pheromone; the lower wall of the trap box on the right of the barrier mesh is provided with a locust exit; a locust collector is fixed under the locust exit; the periphery of a right opening of a cloth bag is fixed to the periphery of a right opening of the locust box; a left opening of the cloth bag fixedly sleeves the outside of a large opening end of an anti-exiting hopper. The sexual pheromone applied to the brushes and infrared generated by the heater during heating attract the locusts, the locusts enter the locust collector from the locust exit, and the locusts are collected accordingly and can be conveniently killed later; the locust trap allows the locusts to be killed conveniently and efficiently at low cost, and the whole killing process is basically unattended.

A lint guide part 5 is provided in a clearance between a moving knife 30 and an opening part 40a. The end face of the lint guide part 5 opposed to the opening part 40a is formed into the same shape to that of the opening part 40a to efficiently exert a suction force. The lint guide part 5 is connected to the moving knife 30 and vertically move integrated therewith, and the opening part 40a and the end face of the lint guide part 5 are disposed on the same height at the lowermost end position to improve the lint collecting efficiency. To provide a cloth cutting knife device of a sewing machine causing neither malfunction due to the intrusion of lint produced when cutting a cloth by the cloth cutting knife device nor seizure of the sewing machine due to the lint absorbing oil.

There is provided a plant transplantation device capable of reliably sucking a root of a plant into a hole portion, reliably causing the root of the plant to extend downward from the hole portion without remaining in the hole portion, and improving production efficiency without requiring monitoring or manual operations with a simple configuration. The plant transplantation device includes a suctioning means 110 for sucking a root 103 of a plant 101 and causing the root 103 of the plant 101 to pass through a hole portion 121, the suctioning means 110 has a suctioning tube 111 which can be hermetically attached to a lower portion of the hole portion 121 and a suction pipe 112 which causes a negative pressure in the suctioning tube 111, and a water supplying means 130 for supplying water to the root 103 of the plant 101 is provided in the vicinity of the hole portion 121.

The invention discloses a ceiling loudspeaker box. The ceiling loudspeaker box comprises a loudspeaker assembly (1), a shell (2) and a mesh enclosure (3), wherein the loudspeaker assembly (1) is arranged in the shell (2), a panel (1.1) of the loudspeaker assembly (1) is exposed to the outside of the port of the shell (2), the mesh enclosure (3) is arranged on the panel (1.1), a plurality of strong magnets (4) are arranged at the edge position of the panel (1.1) in a circumferential direction of the panel (1.1), the mesh enclosure (3) is an iron mesh enclosure, the area of the mesh enclosure (3) is not less than that of the panel (1.1), and the edge of the mesh enclosure (3) is absorbed on the strong magnets (4) of the panel (1.1). The mesh enclosure of the ceiling loudspeaker box is reliably connected with the loudspeaker assembly, and the production cost can be reduced.