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JP2992518B1 |
[wrap up] [Task] For example, the present invention relates to an anti-rotation tool for nuts used for power transmission or communication towers, and provides an anti-rotation tool capable of securely preventing and fixing the nut as de...
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JPH11344018A |
To provide a screw holder which can hold a screw in a lamp cover through a simple operation in such an arrangement that it does not slip off but remains rotatable. A screw holder comprises a cylindrical part 31, flange 32, fixture pawl 3...
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JPH11336734A |
To surely prevent removing of a nut due to mischief or the like. A bolt 7 screwed into a nut 8 to tighten an article is screwed into a receiving board 1 to the more forward side than the nut 8. A covering tube 4 which covers the roughly ...
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JPH11336736A |
To provide a locking device capable of locking a tightening nut completely. A washer faced nut 4 is thread-engaged with the redundant length part 1b of a bolt 1 where a tightening nut 2 is thread-engaged, and a retaining ring 5 is fitted...
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JPH11336737A |
To provide a looseness preventing structure for a fastener which can be executed by anyone easily without using extensive equipment and materials, and effectively prevent generation of mischief against the structure, and also provide a f...
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JPH11336732A |
To provide a screw dropping-off preventing tool which can eliminate need for a change of the structure of an existing part, can be retrofitted to the existing part easily, and eliminate need for additional operation in tightening a screw...
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JPH11325021A |
To make fastening torque constant substantially and prevent loosening or removal by mischief. This device has a nut body 7, a tool engaging part 9, and a breakage part 8 therebetween. The nut body 7 has an engaging part 11 with which an ...
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JPH11325042A |
To use a comparatively low cost member, to simplify the execution of a work at an iron tower build-up site where building is effected by using a bolt and a nut, and to perform no removal of a fastening tool unless a member to cover the f...
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JPH11325033A |
To provide the fastening structure of a bolt and nut unable to be unfastened and removed unless otherwise dismantling is effected by fusion or the like after fastening. A fastening nut 6a to securely fasten members, such as joint flanges...
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JPH11325039A |
To prevent a nut from being removed or released by pressing a washer with a lock housing, and pressing the outer edge section of the washer into the lock groove of the lock housing. A lock housing 5 is constituted of a large-diameter cyl...
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JPH11325038A |
To facilitate a fitting work by providing a corrugated irregular section on the end face of the head section of a nut member so that it can apply rotat ing force in the direction to screw the nut member to the screw section of a bolt and...
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JPH11324199A |
To provide a bottom steel plate connecting method for a composite slab panel which dispenses with scaffold installed in a slab bottom side in connecting a slab panel, absorbs the dimensional error in the bridge shaft direction of the sla...
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JPH11325035A |
To prevent the occurrence of a fall as a result of the shaft part tip of a male screw being separated away from a female screw when a male screw is unfastened from the screw hole of a female screw by reversely rotating the male screw. A ...
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JPH11325037A |
To facilitate a fitting work by providing a ratchet mechanism between the trunk section of a nut member and a flange section, and rotating the ratchet mechanism in the direction to screw the nut member to the screw section of a bolt when...
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JPH11325036A |
To prevent a nut from being removed by screwing an expanding screw toward the bottom of a taper screw tube with a tool inserted into the through hole of a bolt main body, expanding the diameter of the shaft end side of a screw shaft sect...
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JPH11320430A |
To facilitate the removal of a nut cover by constituting a removing machine of a chuck which moves the removal object nut cover in the drawing- out direction and a fastening member which holds or releases the pinching state of the chuck....
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JPH11315816A |
To prevent malicious detachment of a nut with a low cost by providing the nut itself with detachment-preventive function. A double-nut type detachment-preventive nut has a lower nut 2 and an upper nut 3. Outer peripheral surfaces of the ...
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JPH11315823A |
To prevent the loosening of a nut or the artificial removal of a bolt by forming a collar part protruded toward the center on the opening part of a bottomed cylindrical body closed in one end, and inserting the collar part between a memb...
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JPH11315821A |
To prevent the artificial removal of a bolt by bending both ends of a sheet spring curved high in the middle inward to form hook-like claw parts. Both ends of a sheet spring curved high in the middle are bent inward to form hook-like cla...
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JPH11311235A |
To prevent a bolt and a nut fitted to a fastened member from being removed by mischief. A mischief preventive fitting 1 is composed of a fixed ring 2 thread-fastened to the end part of a bolt B, and a protective cap 3 locked to the fixed...
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JPH11311237A |
To protect a nut even from external force while preventing looseness of a fastened nut by bringing both surfaces of the nut and the cap part into pressure contact with a bolt, and forcibly screwing the nut part up to shearing from the ca...
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JPH11311234A |
To prevent a nut fastened to a bolt, from being loosened by an outsider. This protective nut is provided with a cylindrical core 2 having an internal thread coinciding with a bolt, on the inner peripheral surface, and an outer frame 3 fi...
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JPH11303842A |
To prevent the removal of a nut of a fastening device by mischief by assembling a cylindrical outer cylinder regulated in the axial movement thereof by a flange piece provided at a tip of an inner cylinder and an article on the inner cyl...
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JPH11303840A |
To prevent a crime and the occurrence of falling-off by providing a contact surface of a nut to be meshed with a bolt having various diameters and provided with a normal and reverse screw with a plurality of groove parts, and providing a...
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JPH11303841A |
To provide a bolt.nut breakup prevention metal fitting with a simple structure for only combining the pipe shape collar for covering the nut,with a round nut facing into the collar screwed to the residual part of the bolt projecting the ...
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JPH11303844A |
To surely prevent the intentional loosening of a fastening bolt by providing a falling-off preventing member to be engaged with a part of a nut inside a cover body so as to prevent the axial movement of the cover body. A cover body 5 is ...
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JPH11303839A |
To prevent the removal of nuts by a mischief after once tightened, in the nut used at the construction time of a steel toward or a bridge. A nut having a female screw 2 on the axial center divides the axial center to two vertically and f...
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JPH11303843A |
To prevent the removal of a fastener such as a bolt or a nut by having a cover part for covering a fastening peripheral surface of a fastener as a fastening force applying surface, and fitting the fastening peripheral surface and the cov...
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JPH11303838A |
To provide a nut which is so hard that the removal of a nut by an outsider is nearly impossible. This nut is composed of a nut body 1 whose outer periphery is circular and a split ring 2 made by a sheet spring and a ring shape groove 4 i...
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JPH11294434A |
To simply prevent loosening of a bolt and a nut threadedly engaged with each other. L-angles 3 and 4 are brought into a threadedly engaged state by a hexagonal bolt 1 and a hexagonal nut 2. With this state, an auxiliary nut 10 having dia...
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JPH11294431A |
To fasten an angular nut with a bolt to break the projecting part so as not to detach the nut or the bolt by constituting a slip nut out or a set of nuts, forming the outer circumferential face of a round nut on the inside into a cone, c...
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JPH11294430A |
To make it impossible that disassembly is effected after fastening. A truncated conical body part 12 having a screw hole 11 threadedly engaged with the screw part 2A of a bolt 2 is provided. A plurality of torque receiving surfaces 14, 1...
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JPH11294435A |
To provide a bolt and nut removal prevention tool to prevent the artificial removal of a bolt and a nut and to protect a bolt and a nut from wind and rain. This prevention tool comprises an inner cylinder part 11 press fitted in the oute...
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JPH11294432A |
To prevent arbitrary removal of fastening structure consisting of a bolt and a nut. A fastening structure 6 consists of a bolt 3 and a plurality of nuts 1 and 2, the nut comprises an inside nut 1 arranged on the inside for fastening; and...
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JPH11287235A |
To prevent the drawing-out of a nut from a bolt by forming cylindrical part in a nut protection cap of magnetic material, constructing it of a large diameter bore cylindrical part and a small diameter bore cylindrical part, sticking a pe...
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JPH11287236A |
To prevent a nut from being drawn out to disappointment by screwing a first cover in the end part protruded from a nut screwed to a bolt fastening a member, putting a second cover covering the first cover and the nut over them, and conne...
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JPH11287234A |
To provide the structure for preventing illegal action without impairing the maintenanceability, by which the illegal action can be surely prevented in a reasonable cost and the bolts can be easily loosened under the reasonable purpose, ...
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JP2600624Y2 |
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JPH11280740A |
To prevent disassembling of a fastening structure by fastening/ disassembling tools on the market and especially to prevent malicious disassembling of a double-nut structure. In this device, a male screw front 2X of a bolt 2 is screwed w...
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JPH11280745A |
To prevent malicious detachment of a nut of a fastening device adopting a fastening bolt. In a fastening device, nuts (n), (n') are screwed with a fastening bolt (b) for fastening an object. A pair of inner and outer cylinders 1, 2 is en...
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JPH11280747A |
To provide a detent structure of a detent nut hardly detachable. This detent structure has a pentagonal detent nut 55 screwed over a fixation nut 54 which is screwed with a fixation bolt 53 for fixing a structural body 51 to the side of ...
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JPH11280746A |
To prevent fastening nuts from being easily removed by mischief by installing a sleeve covering the outer peripheral surfaces of both fastening nuts on the fastening nuts on the article side of a fastener. A fastener A is constituted by ...
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JPH11280744A |
To prevent detechment of a nut of a fastening device which adopts a bolt and the nut. In this nut cover, an engagement ring 6 is arranged on a front side of a rotatable cover main body 1 covering nuts (n), (n') screwed with a fastening b...
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JPH11280743A |
To prevent malicious loosening of a screw fastening member. This type of screw fastening member is composed of a bolt 1, a nut 2, a washer 4, and a cap 3 bridging over the nut 2 and the washer 4. A screw thread surface 41 having an inver...
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JPH11280742A |
To make a nut impossible to be pulled out by constituting a slipping- out preventive nut of the hexagonal part, the circular part and the small diameter part between both, and threading only the circular part inside surface in a through ...
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JPH11270544A |
To conduct fitting work quickly and surely by providing a short tube section allowing its bottom end to be kept in close contact with the fastening face of a bolt/nut and a knock face provided at the top end of the short tube section. Th...
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JPH11270545A |
To provide a novel tightening structure of a member to be tightened without a possibility of a bolt and a nut to tighten the member to be tightened being neither removed mischievously nor loosened, and a tightening tool used for the tigh...
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JPH11270542A |
To provide a loosening preventive structure of tightening bolt and nut in which the bolt and nut in the tightened condition are not loosened layer by a third party. In tightening bolt and nut comprising a tightening bolt 2 having a threa...
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JPH11270543A |
To protect a tightening device to be tightened by a general tool so as not to be easily loosened by a third party. A cover member 15 for nut fitted over the whole circumference along an outer circumferential surface of an upper flange pa...
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JP2600189Y2 |
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