Class / Patent application number | Description | Number of patent applications / Date published |
405259400 | Bolt having wedge expander | 11 |
20080260472 | Resin Groutable Expansion Anchor and Method of Installing Same - A rock bolt and a method of installing a rock bolt in a borehole ( | 10-23-2008 |
20090191006 | Resin Mixing and Cable Tensioning Device and Assembly for Cable Bolts - The present invention is directed to a device and assembly for the anchoring and tensioning of cable bolts used in earthen formations to stabilize the earthen structures to prevent or minimize the caving in or sluffing-off of the earthen structure. The new invention presents an integral wedge barrel and threaded sleeve which can be turned to facilitate both the mixture of cementing resins and the physical tensioning of an anchored cable. | 07-30-2009 |
20100221072 | BOLT ANCHOR - A bolt anchor is comprised of a body and sleeve. The body is generally wedge shaped with a threaded bore along its axis and at least one stop near its smaller end. The sleeve has a round collar with leaves extending from the collar parallel to the axis of the collar and each other. The at least one stop maintains the assembly of the body and sleeve. Prongs on the sleeve prevent the retraction or turning of the bolt anchor when a bolt is installed in a hole using the bolt anchor. Reduced material thickness associated with the leaves on the sleeve produces hinges which allow the leaves to be more easily deformed outwardly to engage the sides of a hole. Inserting a bolt and bolt anchor assembly into the hole and then turning the bolt pulls the body into the sleeve and creates a wedging effect in the hole. | 09-02-2010 |
20110217126 | SHEATHED CABLE - A cable bolt comprising a tension member having a first end and a second end. A rotatable collar is positioned on the tension member and is rotatable relative to the tension member. An elongate sheath, having a first end and a second end, is disposed over at least a portion of the tension member and secured to the rotatable collar. A method of securing an anchor in a structure is also disclosed. | 09-08-2011 |
20110229273 | Bolt Anchor - A bolt anchor is comprised of a body and sleeve. The body is generally wedge shaped with a threaded bore along its axis and at least one stop near its smaller end. The sleeve has a round collar with leaves extending from the collar parallel to the axis of the collar and each other. The at least one stop maintains the assembly of the body and sleeve. Prongs on the sleeve prevent the retraction or turning of the bolt anchor when a bolt is installed in a hole using the bolt anchor. Reduced material thickness associated with the leaves on the sleeve produces hinges which allow the leaves to be more easily deformed outwardly to engage the sides of a hole. Inserting a bolt and bolt anchor assembly into the hole and then turning the bolt pulls the body into the sleeve and creates a wedging effect in the hole. | 09-22-2011 |
20110250022 | ROOF BOLT ANCHOR WITH CAMMING ELEMENT - A bolt anchor is comprised of a camming element and sleeve. The camming element is generally cylindrical, but with a larger midsection and reduced diameters at each end. The camming element includes a threaded bore along its axis and at least one stop near one end. The sleeve has a round collar with leaves extending from the collar parallel to the axis of the collar and each other. The stop maintains the assembly of the camming element and sleeve. Prongs on the sleeve prevent the retraction or turning of the bolt anchor when a bolt is installed in a hole. Reduced material thickness associated with the leaves produces hinges which allow the leaves to be more easily deformed outwardly. Inserting a bolt and anchor assembly into the hole and turning the bolt pulls the camming element into the sleeve and creates a wedging effect in the hole. | 10-13-2011 |
20120070235 | TENSION DISPERSION-TYPE COMPLEX ANCHOR BODY WITH A REMOVABLE TENSION MEMBER, AND METHOD FOR CONSTRUCTING SAME - A tension dispersion type complex anchor device includes an internal fixing body having a tension member which is placed through a free length section to apply a tension force and a fixing block to which a wedge assembly for grasping a distal end of the tension member is mounted; a connection medium unit for mounting the internal fixing body to one end thereof; a grip sleeve coupled to the other end of the connection medium unit; and a permanent anchor fixed by being fitted into the grip sleeve to provide an allowable anchoring force through a bonded length section. | 03-22-2012 |
20120114426 | ROCK BOLT WITH MECHANICAL ANCHOR - A rock bolt comprising a shaft having first and second ends, and an anchoring device operative to retain the bolt when located in a drilled hole and comprising a mandrel mounted to, or integrally formed with, the shaft and at least one expansion element overlaying the mandrel, at least one of the mandrel or the at least one expansion element being a movable member and being able to rotate relative to, and move axially along, the shaft, the at least one expansion element being arranged to be displaced radially outwardly on a predetermined relative movement between the mandrel and the at least one expansion element, wherein when disposed on a first portion of the shaft, rotation of the movable member relative to the shaft causes axial movement of that member along the shaft, and when disposed on a second portion of the shaft, the movable member is able to rotate on the shaft without being biased to move axially along the shaft. | 05-10-2012 |
20130121773 | ANCHORING DEVICE - In an anchoring device, a drill head and expansion element(s) are configured to cooperatively interlock with each other to provide for directed movements of the drill head relative to a longitudinal axis of the shaft. Co-operating contact surfaces between the drill head and the expansion element(s) are configured such that relative longitudinal movement of the drill head with respect to the expansion element(s) displace(s) the expansion element(s) outwardly so the expansion element(s) can provide frictional contact with a borehole once inserted therein. | 05-16-2013 |
20140356077 | WEDGE ANCHOR BOLT - A wedge anchor bolt having a screw member, a wedge member, and a cage member. The bolt is anchored into a drilled hole by wedging the wedge member in the end of the cage member by turning the screw member, with the result being that the wedge member becomes stuck in the cage member. For ejecting the wedge member from the cavity the screw member includes at least one of (1) one or more depressed portions, and (2) one or more projecting portions, defining a step, and the cage member includes one or more corresponding step-engaging portions for making an interference contact with the step, so that further withdrawal of the threads ceases to withdraw the threads relative to the cage member while continuing to withdraw the threads relative to the wedge member, thereby forcing the wedge member distally relative to the cavity. | 12-04-2014 |
20150354354 | Rock Bolt - Rock bolt ( | 12-10-2015 |