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| Number | Title | Issue Date |
| 7185721 | Male portion, drill bit and threaded joint for percussive rock drilling A male portion for percussive rock drilling includes sections of reduced cross-sectional area. At least one thread for percussive rock drilling is provided at an end of the male portion. The end of the male portion comprises an abutment surface for the transfer of i... | 03/06/2007 |
| 7169239 | Solid expandable tubular members formed from very low carbon steel and method A very low carbon steel alloy is provided for use in manufacturing tubular members such as oil country tubular goods. The tubular members may be radially expanded from at least twenty percent to forty percent. Sections or joints of casing formed from the steel alloy... | 01/30/2007 |
| 7118300 | Shaft coupling In a shaft coupling having a pair of complementally shaped, detachably joinable coupling sleeve halves (11, 12) which can be clamped together by means of clamping elements to form a split coupling sleeve provided with at least one seat (14) for a first... | 10/10/2006 |
| 7108063 | Connectable rod system for driving downhole pumps for oil field installations Improved sucker rod joints for down hole petroleum pumping applications are provided within the form factor of standard API sucker rods, such that existing inventory in suitable condition is fully usable in more demanding applications. The pin ends are selected or p... | 09/19/2006 |
| 7044678 | Connecting an anchoring rod to a drilling tool An anchoring rod for rock anchoring (self-drilling injection bolts), includes an outer thread for connecting the anchoring rod to a drilling tool via a coupling sleeve. The end of the anchoring rod, which is screwed into the coupling sleeve, comprises a section whic... | 05/16/2006 |
| 6935615 | Rod connector assembly An improved rod connector assembly and method for mechanically fastening two rods together. Generally planar mating surfaces of a first rod assembly and a second rod assembly are compressively coupled by a rod union. The compressive load by the rod union is derived ... | 08/30/2005 |
| 6929277 | Break apart bicycle A detachable bicycle comprises a front frame section including a joint tube at a rear end of the crossbar, a rear frame section including a sleeve extended forward, obliquely from the bottom bracket for receiving a lower portion of the down tube, and a seat tube ext... | 08/16/2005 |
| 6905278 | Connection point A connection point (1) between two tool parts is proposed which are joined by means of a threaded spindle (7) oriented in longitudinal direction of the tool parts. The threaded spindle has two oppositely threaded sections (13, 15) which interact... | 06/14/2005 |
| 6886805 | Rod connector assembly An improved rod connector assembly and method for mechanically fastening two rods together. Generally planar mating surfaces of a first rod assembly and a second rod assembly are compressively coupled by a rod union. The compressive load by the rod union is derived ... | 05/03/2005 |
| 6880224 | Deformed reinforcing bar splice and method A process for forming an improved tensile strength deformed reinforcing bar splice for use in concrete construction by radially compressing or cold forming the bar end with dies literally to flatten any ribs or deformations on the bar end to cold work a section of t... | 04/19/2005 |
| 6814523 | Connecting device Connecting element for joining two support members (2, 3) absorbing tensile forces, which connecting element (1) comprises at least a first and a second casing body (5, 6) with a through-hole (7) for receiving the respective support membe... | 11/09/2004 |
| 6810956 | Thread coupling for a drill string for percussive rock drilling A thread coupling for a drill string for percussive drilling has a male thread (5) and a cooperating female thread (4). The male thread is arranged on a first drill string element (3) having a first impact surface (6). The female thread i... | 11/02/2004 |
| 6811347 | Lamp post insertional conjoinment structure An improved lamp post insertional conjoinment structure consisting of a locking connector component ensleeved between an upper and a lower lamp post, with the locking connector component comprised of a threaded rod having a neck section at its leading and trailing e... | 11/02/2004 |
| 6561723 | High tensile tie rod connector A high tensile rod connector is provided that includes a first section having an internally threaded surface and a second section having an internally threaded surface. The threads of the first section mate with the threads of the second section. A pair o... | 05/13/2003 |
| 6467989 | Adjustable column connection An adjustable connector that can slide along a rod or tube and can be secured from axially translating in infinite positions along the entire length of the tube. It also has the capability of attaching itself to a surface or structural element such as a s... | 10/22/2002 |
| 6394190 | Corrosion-resistant thread joint for percussion drill element and method of achieving such resistance A percussive drilling component includes a cylindrical male screw thread formed of a steel material. The thread includes thread crests and thread roots interconnected by thread flanks. To protect the thread against corrosion, the thread is coated with a m... | 05/28/2002 |
| 6345472 | Apparatus and method for anchoring and erecting concrete or similar materials An apparatus for use in concrete construction is characterized by a body having a first portion configured to be set into concrete during the casting of that concrete, and which can be removed from the concrete after the concrete has set, and thereby may ... | 02/12/2002 |
| 6334493 | Corrosion-resistant thread joint for percussion drill element and method of achieving such resistance A percussive drilling component includes a cylindrical male screw thread formed of a steel material. The thread includes thread crests and thread roots interconnected by thread flanks. To protect the thread against corrosion, the thread is coated with a m... | 01/01/2002 |
| 6328499 | Screwed connection for threaded rods A screwed connection comprises at least one rod end (10, 12) with an external thread (16) and a threaded sleeve (18) with an internal thread (20). The threaded sleeve (18) is screwed with axial play on to the rod end (10, 12). A cotter (26) is driven thro... | 12/11/2001 |
| 6196598 | Straight hole drilling system A drill rod for a drill string has a thread at each end and is connected to an adjacent rod by a sleeve. The threads on the sleeve and rod are configured to reduce stress concentrations and provide sacrificial wear on the sleeve. The thread has a single s... | 03/06/2001 |
| 6152643 | Coupling for inserting a soaking bar into a blast furnace tap hole A coupling device for use in inserting a soaking bar into a clay plugged blast furnace tap hole with a rotary percussion tool, having a first axial aperture at a first end adapted to be fitted onto a driving post of a rotary percussion tool, and having a ... | 11/28/2000 |
| 6044599 | Spiral staircase The circular staircase has individual steps made of stone, and in particular natural stone, mounted on a central newel. The steps each have a reinforcing member with one end that is joined to the newel and he other end that has a prestressing element agai... | 04/04/2000 |
| 6033310 | Variable length drive shaft A variable length light weight drive shaft for a rolling mill roll including: a driven first end including a universal joint connecting with an end of a male splined shaft having an axial bore and counter bore and a driving second end including a universa... | 03/07/2000 |
| 5921049 | Device for forming framework of wooden building A device for forming a framework of a wooden building includes a steel made square tube which is capable of tightly receiving a top portion of a post in a lower portion of the tube and a bottom portion of another post in an upper portion of the tube. The ... | 07/13/1999 |
| 5888025 | Coupling for tie rods For coupling anchor bars (2) of injection anchors, the anchor bars are screwed with their outer threads (4) into a coupling sleeve (1) provided with a corresponding inner thread (5). One of the two anchor bars (2) screwed into the coupling sleeve (1) has ... | 03/30/1999 |
| 5746555 | Connector with engagement indicator A coupler for connecting two axially aligned, rod-like reinforcing members or structural parts and which permits a visual confirmation that successful coupling of the two structural parts has been made. The coupler is fashioned as a sleeve with two oppose... | 05/05/1998 |
| 5690445 | High-speed assembly connector structure A high speed assembly connection structure that consists of a direction screw of a connector head that fits in a direction slot of a tool element which causes the tool element to be limited to a specified direction. A set screw of the connector head protr... | 11/25/1997 |
| 5645291 | All terrain skateboard An adapter that is to be mounted on each end of each axle of a skateboard. The adapter is to be added to the axle after the conventional wheels of the skateboard have been removed. The adapter extends the wheel mounting for the skateboard some distance fr... | 07/08/1997 |
| 5484222 | Apparatus for gripping a pipe An apparatus for gripping a pipe, which apparatus comprises an outer member having a first inclined inner surface, and an inner member having a first inclined outer surface, the arrangement being such that, in use, on rotation of said outer member relativ... | 01/16/1996 |
| 5433491 | Ball pickup apparatus A tennis ball retrieval system comprises a removable cap which is preferably sized to fit a standard tennis ball container. The cap has an opening and an inwardly projecting flange for effectively reducing the opening to less than the diameter of a standa... | 07/18/1995 |
| 5431507 | Bicycle torque coupling A torque transmitting, bicycle frame coupling which connects to the frame tubes, replacing a portion of those tubes and having teeth on their engaging faces. Proper installation of two such couplings allows up to a 25 inch men's style bicycle with up to 7... | 07/11/1995 |
| 5411347 | High dynamic strength reinforcing bar splice and method of making A high dynamic strength or fatigue resistance is achieved in a taper thread reinforcing bar splice for use in steel reinforced concrete by coordinating the elongations of the coupler sleeve and bar to achieve the required movements of the coupler sleeve a... | 05/02/1995 |
| 5308184 | Method and apparatus for mechanically joining concrete-reinforcing rods A mechanical connection for concrete reinforcing rods has a connecting sleeve and a reinforcing rods having protuberances (e.g., ribs or fins) on their outer surfaces. Each of the reinforcing rods has a threaded end for connection with the connecting slee... | 05/03/1994 |
| 5292161 | Ball pickup apparatus A tennis ball retrieval system comprises a removable cap which is preferably sized to fit a standard tennis ball container. The cap has an opening and an inwardly projecting flange for effectively reducing the opening to less than the diameter of a standa... | 03/08/1994 |
| 5193932 | Coupler for reinforcing bars A coupler for reinforcing bars includes an internally threaded sleeve with first and second internally threaded coupling portions respectively extending and tapering outward from two ends thereof. Each first and second coupling portions has a number of sl... | 03/16/1993 |
| 5158527 | Method and apparatus for mechanically joining concrete-reinforcing rods The invention relates to a method for producing mechanical joints of concrete-reinforcing rods, to a reinforcing rod allowing the application of the method as well as to a mechanical joint for reinforcing rods thus produced. It has its applications especi... | 10/27/1992 |
| 5131204 | Reinforcing steel connection A sleeveless screw connection between two reinforcing steel elements includes a conical tapped hole in one end of one of the elements, and a conical externally threaded end on the other element. The surface of each thread envelope makes an angle of betwee... | 07/21/1992 |
| 5031370 | Coupled drive rods for installing ground anchors Ground anchors are installed by drive rods or gads connected in end to end relation by sleeves or couplers which accommodate sliding of adjacent rod ends into abutting relation under impact or compression loads and which retain the rods in connected strin... | 07/16/1991 |
| 4943094 | Threaded pin and box construction for composite tubulars A fiberglass pipe joint construction having threaded pin and box ends thereon. Tapered threaded portions are provided with profiles to improve alignment and sealing and prevent galling of the resinous material.... | 07/24/1990 |
| 4938768 | Bone gap bridging and fusing device A bone gap bridging and fusing device for use where large portions of the bone are removed in limbs comprising first and second pin members adapted to be placed in axial openings formed in the opposed remaining bone portions. Each pin member includes a he... | 07/03/1990 |
