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JP4730217B2 |
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JP4719426B2 |
A measuring device ( 1; 21; 33 ) for controlling an installation torque of a fastening element ( 4; 32 ) and securable to engagement means ( 3; 35 ) of the fastening element ( 4; 32 ), includes an indicator ( 5; 24 ) for a visual display...
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JP4705525B2 |
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JP2011117535A |
To provide a bolt capable of carrying out fastening by using a hand tool such as an inexpensive and common driver even in a structure capable of controlling fastening torque.The bolt includes a head part 2, a shaft part 4 having a male s...
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JPWO2009096031A1 |
To provide a fastener capable of preventing rotation of a nut in a return direction and effectively enhancing a loosening prevention effect, and also having a configuration in which the completion of tightening by a fastener can be visua...
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JP4688662B2 |
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JP4686674B2 |
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JP4685574B2 |
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JP4681078B2 |
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JP4669873B2 |
To easily separate a bolt and a nut of a fastening device screwed to each other by a simple structure in a short time. This fastening device 25 includes a bolt 31, a nut 32, a collar 33 and a compression spring 34. A lead angle of a male...
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JP2011069825A |
To provide a long-term axial force calculation method of a fastened high-strength bolt in consideration of an axial force loss amount caused by a creep phenomenon on a coated surface, capable of determining accurately whether a design pr...
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JP4666698B2 |
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JP4659218B2 |
A hydraulic tensioning system for nuts on studbolts has a puller bar and a puller buddy, which are coupled to the studbolt, and a bridge around the nut. The puller bar is internally coupled to the studbolt (and may engage the nut before ...
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JP4627126B2 |
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JP4624792B2 |
A fastening system with a weld stud having an annular weldment portion and a fracturable nut is provided. The fracturable nut and stud construction is configured to fail under torsional load prior to the structural parts failure.
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JP2011017352A |
To provide a locking nut setting a press contact limit by nut fastening not to exceed allowable tensile load value of a bolt, and preventing breakage of the bolt due to excessive fastening of a nut.In the locking nut comprising a pair of...
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JP4618567B2 |
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JP4620568B2 |
The screw has a fusible portion forming a preferential failure area and located between a head of the screw and a threaded portion. A rotation blocking portion (17) between the threaded portion and the fusible portion blocks the screw in...
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JP2011007301A |
To provide a fastening omission preventing confirmation member capable of confirming prevention of fastening omission even when fastening is loosened after fastening is carried out once in an electrical connector.The fastening omission p...
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JP4609082B2 |
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JP2010286077A |
To provide a fastening device with a fastening confirmation device that can visually determine the completion of fastening.In the fastening device, a clearance is established among the outer surface of a second rachet base body in a rota...
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JP4588972B2 |
This invention relates to a tightening device having a function of imparting an energizing force in the tightening direction to a tightening member such as a bolt, nut and screw to be screwed to a tightening object to be retained for a l...
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JP4578423B2 |
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JP4572764B2 |
A bearing cap (10), a type of thread-clamped member, is clamped to a cylinder block (1) by flanged hexagonal bolts (20). The material of the bearing cap (10) is aluminium alloy, while the material of the bolts (20) is steel. The bearing ...
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JP4564604B2 |
A basic method for determining the installed torque in a screw joint which is being tightened by a series of repeated torque impulses, wherein the rotational movement of the screw joint is detected during each impulse, the point in which...
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JP4555749B2 |
To provide a high strength bolt having satisfactory delayed fracture resistance, and having a strength of ≥1,500 MPa, and to provide a method for improving its delayed fracture resistance. The high strength bolt having excellent delaye...
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JP2010196790A |
To recognize whether lock work is normally performed, by externally recognizing rotating and stroking to the lock position of a nut invisible from an external part.When rotating a bolt 12 in the arrow (fastening) direction, the nut 13 is...
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JP2010197273A |
To provide a fastening state evaluation method of a bolt, performable accurately in a short time.This fastening state evaluation method of the bolt includes: a transmission process for transmitting a finite amplitude ultrasonic wave by a...
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JP2010196789A |
To recognize whether lock work by a screw type lock mechanism is normal.When rotating a bolt 12 in the fastening direction from an external part (the lower side), an inside nut 13 is rotated together, and is held in a lock position by a ...
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JP2010196791A |
To recognize whether lock work is normally performed, by externally recognizing rotating and stroking to a lock position of a nut invisible from an external part.When rotating a bolt 12 in a fastening direction, the nut 13 is rotated tog...
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JP4541612B2 |
The present invention consists of a connection, having an anchored, elongated tension member, a fastening member attached to the elongated tension member, a resisting member that receives the elongated tension member and an expansion dev...
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JP2010190859A |
To provide a fastening force management method and a device of a tapered screw capable of managing a fastening force simply and highly accurately.In this fastening force management method of the tapered screw 1 for managing the fastening...
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JP4536380B2 |
The invention relates to a device for adjusting and/or verifying the axial force in screwed connections. The inventive device contains a control device for limiting an axial force acting between two force application elements of the scre...
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JP2010185809A |
To provide a bolt and its axial force information system, by which the axial force can be monitored easily.The bolt is provided which has a strain gauge in its axial part, and is integrated with an antenna and an RFID tag with a strain d...
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JP2010180915A |
To provide a fastening device allowing a useful fastening construction confirming device to be mounted for simply determining fastening completion visually and inspecting failure to fasten.The fastening device includes a screw part, a ra...
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JP2010163277A |
To provide a clamp allowing a worker to securely confirm that an object to be clamped as a suspension load is nipped and held by a sufficient force. The object 2 to be clamped is nipped and held by first and second receiving parts 23, 31...
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JP4510032B2 |
A convex spinal fusion interbody space device includes spaced apart superior and inferior abutment surfaces which are effectively medially convex. The peak of such convexity is displaced anteriorly of a central plane through the device. ...
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JP4505529B2 |
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JP2010151247A |
To provide a structure of a nut which can shorten the total length in the fastening member including a bolt and the nut in each apparatus, wherein the nut is fastened by a predetermined torque not in the bolt side but in the nut side and...
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JP4498879B2 |
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JP4495849B2 |
An anti-loosening nut assembly is composed of an upper nut 3 and a lower nut 2 that engage with each other in an eccentric manner to afford the so-called "wedging' effect of surely inhibiting them from loosening themselves. The upper nut...
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JP4481311B2 |
An explosive attachment device for mechanical connection of components, internally provided with an explosive charge, the detonation shock effect of which is strong enough for rupturing a connection forming part of the attachment device ...
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JP2010127298A |
To provide a washer allowing easy and accurate confirmation of a fastening state of a bolt without performing work after fastening of the bolt. The washer 1 includes a recessed part 12a recessed from a second contact surface 12 to a firs...
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JP2010125565A |
To provide a machine for temporarily fastening a screw part that temporarily fastens the screw part quickly and precisely to a prescribed position and also performs the quality inspection of female screw machining in a screw-in stage.In ...
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JP4469420B2 |
A clamping device with overload protection and a process to connect both elements, which are to be connected, whereby the clamping device is fitted with an element to be connected first, an element to be connected second, which is connec...
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JP2010096345A |
To solve the following problem: a wire, when wound at least twice and a half, is apt to cause metallic fatigue.A screw, instead of a nail, is fastened to an umbrella. When, based on the calculation expression of the theory of relativity,...
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JP2010096249A |
To provide a fastening structure of two members capable of preventing the loosening of screwing even if used at a high temperature after the two members having different coefficients of thermal expansion are assembled by screwing and cap...
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JP2010513866A |
Device (10, 20, 30) and method for tightening a bolt (2) or a nut (12) threaded on its end, which end extends through at least a first body (3) and screws into a hole (5) in a second body (4) or extends through the second body into anoth...
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JP2010091093A |
To provide a fastening device on which a fastening construction confirming device can be mounted usefully for visually and easily determining the completion of fastening construction and inspecting a failure to fasten.The fastening devic...
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JP2010091092A |
To provide a fastening device on which a fastening construction confirming device can be mounted usefully for visually determining fastening completion and inspecting a failure to fasten.The fastening device comprises a screw part, a rat...
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