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JP2009539041A |
Disclosed is a screw for hard wood, comprising a screw tip (3) with two cutting edges (5) that extend approximately parallel to each other and perpendicular to the longitudinal axis of the screw. The cutting angle of the cutting edges am...
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JP4357158B2 |
A self-tapping screw type fastener of the present invention is characterized in that an external thread (7) of an adjusting rod (self-tapping screw) (5) is screwed into and fastened to an output rod (1) with tapping an internal thread (3...
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JP2009250326A |
To provide a system and a method of a fastener having a grooved body which can improve fastening strength of the fastener.The system includes a rod body 112 having a first end 114 and a second end 116. The circular cone part 118 is forme...
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JP4343841B2 |
The device for fixing a synthetic bone plate (1) on a bone (S) comprises a threaded rod (4) passing through a hole (2) housing a plate collar (3) so as to be screwed into the bone. The constricted collar has a non-circular external profi...
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JP4340103B2 |
A lower metal plate (3) formed with a concave portion (4) is connected to an upper metal plate (2) by inserting a tapping screw (1) into a hole such that the male thread of the screw is engages with the female thread. An independent clai...
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JP2009216246A |
To provide a screw with a screw head having a rotation moment transmitting means, having high resistance when the head is broken off from a shaft.The screw 10 comprises a thread 15 formed at least in part, and the shaft 11 for defining a...
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JP2009533635A |
A thread forming screw having a minimum surface hardness of HRC 56. The screw can form threads in a workpiece having a surface hardness which exceeds HRC 23. A method of surface hardening a screw includes carbon enriching the screw to at...
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JP4331310B2 |
A self-tapping screw has a hexagonal head (3) and a shank divided into two main sections. The two-thirds of the shank (2) has a helical thread. The last third (1) of the shank is of larger diameter than the shank but of smaller diameter ...
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JP2009197944A |
To provide a drill screw which is excellent in corrosion resistance and has a small variation in drilling time.The drill screw comprises a rod 1 with a male screw 2, a head 3 and a drill section 4. An entire portion of a drill screw surf...
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JP3153125U |
To provide a self-tapping screw which has a low possibility of damage in a driving process and can easily discharge waste. A self-tapping screw (30) applied to driving into a stainless steel plate (20) has a head (31), a rod (32), and a ...
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JP4321974B2 |
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JP2009162344A |
To provide a screwed structure capable of surely locking a screw by a ratchet structure.A first member 30 and a second member 40 are fixed by a screw 10 and a lock washer 20. The screw 10 is equipped with an asymmetric engaging portion o...
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JP2009526953A |
A clampable fastening device for mounting fittings or other objects in an opening having opposite edges, such as a rectangular opening in a wall, including a head part which is arranged on the outer side of the thin wall and which covers...
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JP4298948B2 |
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JP4294802B2 |
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JP4296674B2 |
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JP2009150534A |
To obtain a tapping screw for fastening a component for reducing a screwing time, and being commonly used for plural kinds of workpieces without changing a screwing torque at each time, with less molding chips.A double-start thread 10 is...
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JP4283082B2 |
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JP4284405B2 |
A screw or a tapping screw, comprising an ultra fine structure steel having ferrite grains of 3 mum or smaller in average grain size and a nitrided layer on a surface part, wherein a strength is increased, a surface hardness is increased...
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JP4278822B2 |
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JP4279495B2 |
A wall anchor for use in a friable material, composed of a generally cylindrical body (12) having a flanged end (14), a central portion (16), and a drill end (18). The drill end (18) has a generally flat blade (20) which includes a first...
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JP4276775B2 |
A screw member having a loosening prevention function is provided to improve a fastening power and a relative strength in thread connection. With an arrangement to provide a first crest portion and a second crest portion at the opposite ...
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JP3150623U |
To use a wood screw like a bolt and a nut, and when a sharp portion of the tip of the wood screw is exposed to the outside, prevent the wood screw from being injured by touching it, and wherever there is no hole for passing the bolt. Tak...
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JP4264435B2 |
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JP2009097623A |
To provide a screw head angle correcting structure for a wood screw, capable of easily correcting an angle of a screw head and preventing deterioration of appearance even when the wood screw for jointing a first member to a second member...
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JP4260624B2 |
A threaded self-tapping screw for joining thin workpieces having a tapered root portion adjacent to the head of the screw. A plurality of threads are disposed on the body and the tapered root portion of the screw such that the radial dis...
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JP2009063144A |
To provide a self-drilling screw capable of not only concluding the prepared hole boring work and the fitting work in one process but also boring with a small force by securing a space for chips which appears when boring the prepared hol...
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JP2009057983A |
To provide a fixture for roof material capable of preventing deterioration of water proofing property of a roof and fixing strength of the roof material.This fixture A for roof material comprises a screw part 2 having threads 1 formed in...
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JP4240820B2 |
An advanced coupling device using shape-memory technology. The coupling device includes a coupling element defining a longitudinal passage extending therethrough, the passage bounded by a side wall having a first end and an opposing seco...
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JP4237862B2 |
The thread (15) of a wood or the like screw has pairs of V-shaped recesses (22, 23) in the edge of a selected intermediate length of the thread (17). Each pair defines a W-shaped cutout (19, 20, 11). The cutouts (19-21) extend into only ...
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JP4228262B2 |
The invention relates to an improved bone screw for use in orthopaedic surgery, in particular with external fracture fixation devices, of the type which comprises a head (3), a shank (4), and a threaded portion (5) tapering towards a tip...
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JP2009036310A |
To provide a boss for a self-tapping screw capable of restraining chips from being generated by a male screw part when a self-tapping screw is screwed in a bottom hole.This boss 11 for a self-tapping screw has a bottom hole 12, in which ...
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JP4225546B2 |
The invention relates to an improvement of a tapping screw which is fastened to a subject while forming a female screw in a prepared hole of the subject by a thread portion formed in a shaft portion. The tapping screw is provided with th...
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JP4223389B2 |
Screw (10) for use in the attachment of synthetic sheet materials to a supporting structure wherein screw (10) is manufactured in integral pressed form. Screw (10) includes head (50), shank (30) and tip (12) and is provided which at leas...
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JP4221582B2 |
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JP4224480B2 |
A fastening arrangement comprising a thread-forming lobular screw (20) and a member (40) defining a non-tapped pilot hole (50) therein. The screw has a shaft (22) and a head (24) joined to a proximal end of the shaft, the shaft defining ...
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JP4219247B2 |
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JP4213842B2 |
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JP4204905B2 |
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JP2008308820A |
To provide a bearing wall structure which increases a wall magnification by fixing structural plywood between columns of a conventional framework wooden building, which can obtain the high wall magnification by using general structural p...
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JP4199909B2 |
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JP2008303952A |
To provide a two-spaced-material fixing screw for connecting and fixing two materials to each other in a mutually isolated state to actualize sound insulating performance.The two-spaced-material fixing screw 1 comprises a base end side s...
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JP4199690B2 |
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JP4199428B2 |
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JP4192387B2 |
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JP2008291870A |
To provide a tapping screw constituted of a corrosion-resistant metal, which can be screwed into a hard base such as concrete or the like, and is manufactured easily, and also to provide its manufacturing method.The manufacturing method ...
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JP4191410B2 |
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JP4188010B2 |
A heat-resistant self drilling tapping screw adapted for drilling a stainless steel plate is proposed, which heat-resistant self drilling tapping screw has no delayed fracture and can satisfy high corrosion-resistivity and high tensile f...
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JP4183434B2 |
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JP4171239B2 |
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