Class / Patent application number | Description | Number of patent applications / Date published |
411387200 | Having a reaming portion | 11 |
20100129175 | PARTICLE BOARD SCREW - The invention relates to a particle board screw having a conical screw tip with a thread. The thread extends from the screw shaft to the front end of the screw tip. In order to make it easier to screw in, and in order to reduce the splitting effect in wood, a shoulder or rib is disposed in the front region of the screw, which is to say on the end or inside of the tapering part, preferably extending around the entire circumference with no pitch. The rib has a front flank running almost transversely to the longitudinal axis of the screw and a more strongly inclined rear flank. The screw has a reduced screw-in torque. | 05-27-2010 |
20110027045 | SELF DRILLING BOLT WITH ANCHOR - An anchoring device having a tapered, at least partially threaded shank with a front end, a drilling head and at a rear end thereof, a torque applying head and an anchor coaxially enveloping a front portion of the shank. The arrangement is such that during drilling through the structure the anchor axially displaces towards the rear end of the shank, wherein the shank tightens against an inside surface of the anchor so as to expand the anchor within the bore being simultaneously drilled, for fixedly retaining thereof within the structure. | 02-03-2011 |
20110103917 | Self-Drilling Fastener - A fastener mountable to a rigid substrate such as a fiber cement panel and also mountable to the panel and an underlying support, such as a metal or wooden stud. The fastener may include a drilling portion having a reaming portion for reaming out the material within the panel, a fastening portion for engaging the panel and, if encountered, the underlying support, and a tapered portion between the drilling and fastening portions. The drilling portion may have a length generally equal to, or slightly longer than, a length of the panel so that reaming out of the panel may be completed before engagement of the fastener threads with the interior of the panel begins. | 05-05-2011 |
20110170984 | FASTENER, INSTALLATION TOOL AND RELATED METHOD OF USE - A fastener including a chisel point that pre-bores a hole in a work piece to prevent damage to the work piece as the fastener advances. The fastener can include a head, a shaft and a chisel brake point formed at an end of the shaft. The chisel brake point can include first and second opposing inclined surfaces disposed at an angle of about 80° to about 150° relative to one another. A thread can begin adjacent the chisel brake point and form an extension of an inclined surface and/or a chisel edge. The chisel brake point can scrape material from a work piece while pre-boring a hole. The material can be transferred to the thread, and subsequently fed up the thread, out of the pre-bored hole. The chisel brake point can also selectively retard advancement of the fastener into the work piece. Methods of installing the fastener also are provided. | 07-14-2011 |
20110229286 | VERSATILE FASTENER - The present invention pertains to a versatile fastener essentially comprising at least two flat areas formed on a cutting part, and an accommodating area disposed between any two of the flat areas. Wherein, at least two cutting faces are convergent to form the accommodating area, a first and a second cutting edges are respectively formed at a connection between each cutting face and flat area. In operation, the flat areas facilitate the first and the second cutting edges to promote a stable balance with the object, thereby allowing the debris to be swiftly guided out of the accommodating areas. Consequently, it is difficult to crack the object while imparting forces thereon so as to lower the screwing resistance and the fastening torque as well as preferably increase the combining efficiency. | 09-22-2011 |
20120308331 | FIXING MEMBER - A fixing member is provided for fixing a ceramic exterior building material to a lightweight thin steel sheet. The fixing member includes a screw portion and a head portion at an upper end of the screw portion. A threaded portion in which a screw thread is formed is provided at a lower end of the head portion, a cutting portion in which a reamer is formed is provided at a lower end of the threaded portion, a pilot portion that has no screw thread is provided at a lower end of the cutting portion, and a tapered drill portion is provided at a lower end of the pilot portion. The thickness “g” of the ceramic exterior building material and the total of the length “e” of the pilot portion that has no screw thread and the length “f” of the tapered drill portion satisfy the relationship g12-06-2012 | |
20130216329 | SCREW FASTENER - A screw fastener for fastening sheet material to a support, the screw fastener including a shank having an elongate axis, a head at one end of the shank, and a drilling tip at an opposing end thereof, at least one substantially planar wing member extending radially from the shank, the wing member having a peripheral reaming edge, and means for extending the time that the sheet material is in contact with the peripheral reaming edge of the wing member while the screw fastener is being driven through the sheet material | 08-22-2013 |
20140010618 | SCREW - A screw comprises a head, a shank disposed at one end of the head and provided with two inclined surfaces at a distal end thereof, at a joint of the inclined surfaces is formed an inclined reaming edge, at least one thread wound around a lateral surface of the shank and a positioning tip disposed at a middle section of the reaming edge. The positioning tip of the screw is firstly abutted against an object to be locked, so as to fix the screw to the object to be locked and prevent the screw from swinging. And then, the reaming edge of the shank performs the reaming operation in the object to be locked, and finally the thread performs cutting and locking operations, which can reduce the extruded material around the locking hole and prevent the object from being ruptured or deformed. | 01-09-2014 |
20150308481 | METHOD AND SCREW FOR MOUNTING FIBER CEMENT PLANKS - A screw and method for the mounting of boards/planks, in particular fiber cement planks, on a support of wood. The screw comprises milling wings and a first thread between the milling wings and the tip, and a second, larger thread with smaller pitch between the milling wings and the screw head. | 10-29-2015 |
20160003284 | Concrete Screw - A concrete screw is disclosed. The concrete screw includes a shank and a thread disposed on the shank with a thread helix and a thread root. A cutting recess is disposed in a tip region of the shank where the cutting recess runs at least in sections within the thread root and without interrupting the thread helix. A rolling die for producing the concrete screw and a method for producing the concrete screw are also disclosed. | 01-07-2016 |
20160061247 | SELF-DRILLING, SELF-CLEANING PANEL FASTENER - A self-drilling, self-cleaning fastener for a panel includes a head having a top side and an underside. The head has a diameter. A shank depends from an underside of the head and has a diameter less than the diameter of the head. A knurled region is adjacent the shank. The knurled region has a diameter and a plurality of spiral formed knurls having a twist in a first direction. The knurls define a major circumference as measured around peaks of the knurls. A threaded region is adjacent the knurled region and has a diameter less than the diameter of the knurled region. The threaded region has a thread form having a twist in a second direction opposite the first direction. A driving point is at an end opposite the head. | 03-03-2016 |