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JP3046122U |
[Task] To provide screws that can be manufactured by plastic injection molding and consist of only a small number of components. The screw comprises a head and a shank having a threaded portion screwed into a preformed hole having a corr...
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JP2717290B2 |
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JP2716321B2 |
PURPOSE: To make it possible to obtain a strong tightening force as in the clamps which use a bolt and a nut and confirm easily if clamping operation is being carried out or not, and to enhance work efficiency. CONSTITUTION: A nut main b...
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JPH1047326A |
To provide a screw having a tightening torque setting function in the screw itself. In a screw formed with a thread part screwed to a thread hole in a mate side and a head part turning the screw, the screw comprises a tightening shaft pr...
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JPH1037930A |
To provide a device which can house a liquid-operated piston and a cylinder device only when a projecting degree of a bolt is comparatively slight and applies tensile force to the bolt by fluid pressure by which stress acting on the bolt...
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JP2710995B2 |
A nut and stud assembly (10) for securing workpieces via threaded engagement of the stud (14) with one of the workpieces and engagement of the nut (12) with another of the workpieces and with the nut preassembled on the stud with the stu...
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JP2711933B2 |
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JP2560957Y2 |
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JP2701144B2 |
To enhance the safety by forming a parting shaft part between a lower side and an upper side core parts, thereby forming a large-diameter recessed part- forming shaft part between the parting shaft part and the upper side core part to bu...
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JPH1015847A |
To prevent pin tails from flying out of a bolt tightening device by providing a through hole on an axis through which the pin tales can be passed, and connecting the rear of the through hole to a pin tail recovery device. A through hole ...
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JPH102884A |
To perform the measurement of a load applied to a part without depending on a coupling material by using an electromagnetic to acoustic transducer (EMAT) for generating and receiving an ultrasonic wave without requiring the contact with ...
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JPH102313A |
To enable testing with little fluctuation and high reliability by remote operation by working an actuator at one end of a whirl-stop rod to detect load, and detecting the displacement of the whirl-stop rod. A whirl stop 21 is so construc...
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JPH09329118A |
To facilitate tightening work, and introduce certainly a predetermined tightening torque by opening a fastening hole in the top surface of a head, and forming projections which collapse when the predetermined tightening torque is applied...
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JPH09317734A |
To reduce fastening operation force in fastening two structural bodies with a bolt and give a proper introduction tensile force to the bolt. In a bolt fastening structure, a shaft of a bolt 21 is previously heated. The bolt 21 is screwed...
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JPH09317736A |
To provide a screw and nut having fastening torque display functions by screwing the fastening nut to compress an elastic member and screwing the screw into a counter screw hole by the friction force derived from its compression reaction...
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JP2681416B2 |
A fastening device comprises a pin-shaped fastener having an axis, and means for tightening and loosening the fastener, the tightening and loosening unit including one element provided with first connecting means for connecting the one e...
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JP2682084B2 |
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JP2554208Y2 |
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JPH09269268A |
To provide a method for detecting looseness of a bolt by an analysis of strain waveform with which it is possible to detect early, accurately and reliably looseness of a bolt and detect looseness of any bolt without specially processing ...
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JPH09257021A |
To provide a screw part, simply unfastened and reliably fixed without damaging a fundamental function, inexpensively. Head parts 10 are arranged in two stages in series and besides and engaging parts 20 with which different driver bits a...
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JPH09250528A |
To make fastening by simple booster structure, without needing manufacturing accuracy, by constituting a torque-up mechanism of a tilted cam surface and a driven tilted cam surface, to use a needle bearing between both the surfaces. In t...
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JPH09242729A |
To provide a torque nut which can prevent damage of a screw thread by preventing excessive screwing-in of a nut and can be reused. A receiving claw 18 is protrusively arranged on an outer peripheral surface of a nut 12 screw-fitted to a ...
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JP2652059B2 |
A method for preventing loosening of a bolt fastened to a metallic member coated with an anticorrosive paint film without removing the paint film. Anticorrosive painting is applied on a metallic member, and then the painted film is thinn...
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JPH09236108A |
To provide a bolt having excellent sealing ability, unfastening protection, and vibration insulating ability. A annular groove 4 is formed in the seat part of a flange part 3 arranged at the bolt head part 2 of a bolt main body 1 having ...
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JPH09229036A |
To enable fastening of a bolt with a preset torque by use of a conventional tool by forming a metal fitting in the shape of belleville spring having a hole for insertion of screw and a tapered part, and providing the tapared part with a ...
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JPH09229037A |
To improve strength and durability by avoiding stress concentration on one part at fastening a bolt. A boundary part 7 in which the shank part 2 of a bolt 8 approaches the thread part 3, is formed into a two stepped taper part contractin...
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JPH09216133A |
To apply prescribed tension to a stud bolt easily by fitting a controller for rotating a prescribed rotational angle nut onto a nut rotating mechanism after heating the stud bolt. Under no tension generated at a stud bolt 5 with a nut 7 ...
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JPH09219237A |
To promptly remove remaining part of a screw if a torque breakage portion is broken when a male housing and a female housing are jointed together with the screw for a screwing connector by forming a tool engagement portion at the end of ...
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JPH09210038A |
To provide a nut which cannot be tightened further when it reaches predetermined axial load and has a detent function. The main body of this detent nut consisting of the main body which involves the internal surface of a female screw 30 ...
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JPH09195888A |
To provide a bolt sealing device by which a bolt main body is broken when the cutting of the sealing of a bolt is tried so that the bolt becomes impossible to be used again. A notch groove 34 formed in the circumferential direction of th...
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JPH09177745A |
To prevent the occurrence of excessive stress in a nut. A collar 40 is housed in the collar housing room 23 of a clamp (member to be attached) 20 and a part of its flange part 32 is brought into contact with the collar 40 when a nut 30 i...
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JPH09170614A |
To provide a method and an apparatus for releasing a bolt without sticking of the bolt stacked in a nuclear reactor vessel in order to prevent the bolt from removing by using a drill. A nuclear reactor chamber comprises a blind hole 90, ...
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JP2614659B2 |
Described herein is high strength steels used for bolts containing as alloy elements: 0.30%
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JPH09119419A |
To prevent the burning of the connected wires in a terminal box by setting the upper end of a heat section lower than the upper face of a large- diameter bolt by a specific length when a bolt heater is inserted into a hole at the center ...
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JP2597518B2 |
The invention relates to a radiator mounting for motor vehicles, in which the radiator rests against a respective corresponding support fixed to a vehicle by at least one bearing support fixed to the radiator. The radiator is supported e...
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JPH0972325A |
To provide a nut with washer which can simply and certainly understand that a fastening process has been finished through attainment of prescribed fastening torque. A nut with washer has a nut 1 and a nearly dished washer 2 relatively ro...
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JPH0960556A |
To prevent a fatigue crack from being generated from an internal thread bottom, by providing a slit along the axial center of an external thread in a side thereof, in the case of applying a fluctuating load to act from an internal thread...
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JPH0953621A |
To judge a fastening condition with visual check, rapidly and surely by constitution which is simple and formed at low cost. This device is provided with a fastening part 4 for rotation operating for screwing, and a display part 6 which ...
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JP2526793Y2 |
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JP2581518B2 |
PURPOSE: To enable ball-nut assemblies to be densely arranged and to enable larger bolt-nut assemblies by improving spacer washers each fitted on a stud bolt between a flange and a nut. CONSTITUTION: An opening 22 through which a bolt is...
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JPH0942256A |
To provide a bolt to be durable for chemical, used in a chemical factory, for a long period. A bolt 2 of a low tension material having screw parts 1 formed at two ends is formed in a hollow state. The two end parts of a hollow part 4 for...
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JP2524669Y2 |
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JPH0932210A |
To eliminate the portion of a bolt body projected from a nut via a simple method after a mounting work. Regarding a mounting method for a roof material, an engagement part 31 formed on the end of a bolt body 33 is coupled to the engaged ...
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JPH0925922A |
To enable production cost to be decreased by reducing the amount of material to be used in addition to easiness of manufacture due to small man hour required for manufacture. On the tip end of the screw shaft part 4 of a bolt main body 1...
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JP2523370Y2 |
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JPH08296622A |
PURPOSE: To confirm fastening force visually. CONSTITUTION: An outer member 1 is provided with a hole 100 which penetrates in an axial direction. In the hole 100, a movable member 2 is axially rotated (c) integratedly with the outer memb...
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JP2514329Y2 |
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JPH08232931A |
To prevent the falling the first head of a screw after shearing and collect it. A cylindrical bearing face 20 having an outer diameter not smaller than the outer diameter of a neck but smaller than the outer diameter of a second head is ...
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JP2529835B2 |
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JPH08226425A |
PURPOSE: To prevent a torshear type highstrength bolt from rotating together by scattering particulates whose hardness is higher than the bearing surfaces of a bolt head part and a washer between the bearing surface of the bolt head part...
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