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JP2003166515A |
To obtain a driving hole shape of a cross recessed head screw which bites well the driving hole and accurately gets a preliminarily preset screwing torque.The driving hole is constituted of an engaging groove 11 in which an engaging blad...
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JP2003165066A |
To surely tighten a bolt while holding it surely, even in a narrow portion in a working area or the like.This box driver 1 is provided with a holding rod 3 having a male screw 3a in one end part and an operation part 3b in the other end ...
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JP3411441B2 |
To provide a screw provided with a first relief for pressing up the bottom side on the tip of a screwdriver when the screwdriver is reversely rotated on a cross recessed screw, and able to decrease friction torque to be generated in the ...
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JP2003139116A |
To provide a cross recessed screw having a driving recess which is easily tightened to a screw torque set beforehand.Since this cross recessed screw has a fitting part 14 composing a driving recess 10 with which a screwdriver bit 20 enga...
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JP2003139115A |
To provide a cross recessed screw easily tightened to a screw fastening torque set beforehand and used even for a relatively shallow driving recess.This engagement groove 11 forms a driving recess 10 with which a screwdriver bit 20 engag...
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JP2003120630A |
To provide a breakup preventive bolt which can not be rotated by an ordinary tool available on the market.A basic shape of a head part 1 of the bolt is formed in a truncated cone shape having the tip side cross-sectional area smaller tha...
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JP3395780B1 |
[wrap up] [Task] Provide labor-saving anti-mischief fastening parts and fastening structures such as nuts, bolts, washers, etc. that can be prevented from being loosened by mischief, etc., and can be reliably retightened or removed when ...
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JP2003106320A |
To provide a screw component capable of surely screwing into a member of the other side in a narrow space and a connector providing the screw component capable of surely fixing mutual connector housings.A bolt 1 as a screw component fixe...
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JP2003074531A |
To provide a screw which can be fastened by hand or with a simple tool but unfastened by means of an ordinary wrench or a driver.A thumb which is not manually separated but is separated by removing strength of the simple tool, is fixed o...
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JP2003048171A |
To provide a tightening error prevention method for a screw part limiting the screw part to be tightened per exclusive tool. At least one recessed part 3 or more are provided on a side face of an engaging part of the screw part with a so...
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JP2003042120A |
To use both of a wrench and a wrench socket while making a bolt lightweight. The bolt 15 comprises a connecting portion 81 for the socket wrench provided with two vertical angles 81A and 81B which oppose each other, and a connecting port...
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JP2003028121A |
To provide a screw with a special drive part capable of being relatively easily molded, and allowing accurate transmission of necessary drive force from a drive shaft.In this screw with the special drive part, a head part 10 whose periph...
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JP2003013933A |
To provide bolts and nuts capable of fastening a bolt and a nut, further, preventing the bolt and nut from getting loose and dropping out and imparting safety that they can not easily removed by a spanner or a wrench in markets and mildn...
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JP2003011071A |
To provide a driver bit and screw capable of preventing conventional breakage of the screw by improving the constitution of a bit tip part fitted into a cross groove in a screw head and allowing the bit tip part to apply a vertical force...
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JP3362131B1 |
A crime preventing screw having a recessed portion for receiving the end of a driving tool. The recessed portion is formed with a recessed engagement portion at a partial lace of an inner wall. An embedding material for embedding in the ...
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JP2002372020A |
To provide a screw and a screw driver capable of preventing crushing of a screw hole. A plurality of projections 1 having the same shape tips are arranged across grooves 2 at an equal interval in the screw driver and the screw is provide...
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JP2002364618A |
To provide a screw part and a tightening tool for the screw part capable of tightening the screw part, using a general-purpose tightening tool, also using an exclusive tightening tool without causing its coming out. A drive shape 3 compo...
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JP2002364619A |
To provide a screw part having a drive shape capable of preventing coming out of a tightening tool and transmitting a tightening stress efficiently, and also to provide the screw part tightening tool. The drive shape 10 formed in a head ...
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JP2002357208A |
To provide a screw component capable of easily fastening a fastened member in a location where a working space is narrow or visibility is poor. A slanting installation of a fastening tool is practical so that a slant face in which a poly...
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JP2002339928A |
To provide a fixing element appropriately and surely fixing in a hole bored in a hard steel foundation of relatively thin wall thickness and giving no adverse effect on the foundation opposed to the fixing device.In this fixing device dr...
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JP2002337055A |
To provide a loosening jig capable of easily performing loosening operation of a fastening portion.A first block 3 is attached to a screw rod to rotate around an axis of the screw rod. A first spanner holder 5 is attached to the first bl...
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JP2002332865A |
To increase maintainability of a bolt for adjusting the belt tension of auxiliary equipment of an internal combustion engine.For this bolt for adjusting the tension of a belt for transmitting a power to the auxiliary equipment of the int...
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JP2002327726A |
To provide a cap nut capable of easily and surely positioning a head portion on the top surface of a nut portion and effectively, integrally forming, and obtaining reduction in cost and improvement of reliability.In the cap nut consistin...
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JP2002323026A |
To provide an improved drive nut being able to prevent 'jam nut effect' occurring when a conventional blind fastener is fitted, a blind fastener with the drive nut and an assembling method of the fastener.The drive nut 50 comprises a mat...
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JP2002323027A |
To form automatically a concave portion for accommodating a head of a screw bolt by rotating the screw bolt having a self-locking function.An object of this invention has been attained by the screw bolt for timber characterized in that i...
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JP2002317806A |
To provide a decorative nut and bolt with an antitheft function capable of making an attaching area of a decorating seal same as that of other nuts or bolts.An outer circumferential face 1d of a nut body 1 with the decorative seal 3 atta...
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JP2002316235A |
To provide a bolt of which the end face on the side of axis is flat and to provide a method for manufacturing the bolt.The method for forming a bolt has a process for forming an axis part and a process for forming a plane. In the process...
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JP3334748B2 |
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JP3332078B2 |
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JP2002290128A |
To provide a portable telephone antenna, having the fastening/ removing function of an antenna fixing screw for clamping and removing, without having to use a private tool for the portable telephone antenna.A screwing minus-type projecti...
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JP2002266827A |
To provide a screw and driver firmly fastenable even with a small rotating force and easily releasable by surely engaging the fitting groove of the screw to the fitting edge part of a driver bit even in a fine screw as a screw for eyegla...
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JP2002213426A |
To prevent leakage of the contents, and to prevent damage of a screw part in bolt fastening of a high temperature high pressure apparatus component part.A female screw 2 is formed in the part 10 for constituting a high-temperature high-p...
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JP2002188614A |
To provide a screw difficult in incorrect tightening and loosening, and whose head is hardly deformed and broken.The head 12 of the screw 11 is formed into an approximately cylindrical column shape which is provided with a cross section ...
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JP3294551B2 |
To provide a door frame attaching screw, which has no play in its axial direction between a screw shaft and a door frame fixing member so that accurate fine adjustment of a door frame can be carried out, requires no special dedicated too...
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JP2002174211A |
To provide a structural member being simply adjusted in a right and left direction and a back-and-fourth direction to an opening portion, simply carrying out renovating construction, and having a function capable of adjusting the amount ...
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JP2002174220A |
To provide a screw having a shape capable of tightening the screw even when a groove portion provided at a screw central portion is worn down.This screw is composed of a head portion and a leg portion, and formed from a first groove port...
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JP2002168217A |
To provide a screw to prevent unlocking making impossible to engage into an engaging groove by a commercial-type screwdriver bit, thereby making impossible to easily remove a part.This screw, having a head and a shank, forms the engaging...
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JP2002155918A |
To provide a loosing action protecting screw impossible to be engaged with an engagement groove of a general screwdriver bit to prevent a removal of parts.This loosing action protecting screw formed of a head parts 2 and a leg part 4 is ...
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JP2002139009A |
To provide a bolt having a hexagonal-curve contour portion formed at the outside and its manufacturing method.The invention relates to a bolt having hexagonal-curve contour portion at the outside and its manufacturing method. A bolt head...
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JP2002140925A |
To provide luminaire and a tightening screw with a knob part capable of securely performing temporary fixation of a position of an equipment main body and securely performing regular tightening.This luminaire is provided with a mounting ...
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JP2002513331A |
A screwdriver blade construction has a tip (20). The tip (20) has a vertical wall (42-45) that is parallel to the blade's longitudinal axis and consequently parallel to the face of a screw groove. The opposite wall (32-35) of the tip (20...
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JP3271868B2 |
PURPOSE: To provide a screw with recess having a high abrasion resistance to the tip of a tightening tool by inclining a surface for forming a side wall of the recess for a specific angle to an axial line of the screw, composing a star-s...
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JP2002089524A |
To provide a bolt that is superior in design, can fix an object with large area to a main body by a single person, and can be treated in a very narrow working space.A bolt has a polygonal concave or convex, or side hole on the tip opposi...
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JP2002085578A |
To provide a fire extinguisher, which can be easily disassembled by easily disassembling a valve case from a container by unfastening a pored stop screw which can not be turned by a screwdriver acquirable for a general user, with a screw...
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JP2002066939A |
To hardly crush a central part of a Y-type slot screw into a circular cone during screwing and unscrewing by forming a wide or 120° interior angle between slots of a screw head, and increase the thickness of each projection slightly to ...
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JP2002054617A |
To provide a screw capable of achieving secure screw driving action even in the case of the screw with a thin head part and a small nominal diameter.In this screw comprising a head part 2 having an engagement groove 5, and a leg part 4 i...
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JP2002021832A |
To provide a fastener formed of a bolt and a nut good for environment and provided with a beautiful decorative surface part in a surface thereof and provided with an engaging recessed part having a functional shape inside of an upper par...
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JP2002021837A |
To provide a disk fastener assembly capable of preventing the looseness of the clamp force given from a tensed fastener even if a plastic washer having a fastener fastened to the predetermined position of the washer is plastically deform...
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JP3247640B2 |
To soften a shock applied to a press metal mold at the time of gear pressing by providing a gear part with a tooth surface meshed with the tip of one face screw driver, and making a tooth forming part thick. A screw shaft part 2 and a ge...
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JP2002005143A |
To develop a freely attachable connecting element for easily installing and removing a constitutive part together with a gasket section.This connecting element, particularly, a screw for fixing a car body part of a vehicle includes a sha...
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