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7827939 |
Bird cage
A modular bird cage includes a plurality of support posts located at the corners of the cage. The support posts are made up of an internal column and an external post surrounding the internal...
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7731174 |
Paper pickup device and image forming apparatus having the same
Provided are a paper pickup device and an image forming apparatus having the same. The paper pickup device and the image forming apparatus having the same include a driving shaft whose end has a...
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7686531 |
Universal rotation-inhibiting connector apparatus and method for threaded utility handles
A universal connector apparatus for securing a male-threaded utility handle end into a female receptacle of a tool assembly comprising a tool, comprising: a substantially-circular friction ring; a...
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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...
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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...
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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...
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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...
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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)...
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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...
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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...
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6688071 |
Concrete structure comprising anchor rods and anchor rod
An anchor rod having at least one section provided with ribs or other raised portions or profiling and a threaded section at one or both ends, and having a variable transition section between the...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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....
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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....
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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...
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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...
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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...
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4905760 |
Sucker rod coupling with protective coating
A standard size, steel oil well sucker rod coupling is machined to decrease its external diameter, producing a constant diameter along its length. Then, the coupling is machined to produce chamfers...
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4902158 |
Assembly of a ball joint shank and a tube
An assembly for use especially as track and tie rods of motor vehicles, comprising a ball joint shank (3) and a tube (1) the ball joint shank (3) having an outer thread (4) which is received in an...
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4861209 |
Threaded coupling
A threaded coupling for a high frequency percussion drill assembly comprises a rod and a sleeve having external and internal threads, respectively. The threads are of the asymmetrical type and make...
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4861210 |
Threaded element forming for example a screw, and assembly of pieces obtained with the aid of this element
The present invention relates to an improved threaded element forming for example a screw, which comprises a thread (F) whose bottom (3) comprises two arcs of a circle (4) with equal radii (r1)...
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4846508 |
Tubular connector system
A tubular connector system is disclosed for joining two pipe ends without the necessity of rotating the pipe ends. One pipe end is provided with an external thread and a second pipe end includes...
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4821959 |
Pump and sprayer attachments for lawn mowers
A pump and sprayer attachment for lawn movers wherein a pump is connected to the uppermost end of the engine drive or crank shaft so as to be in direct drive relationship with respect thereto. A...
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4799844 |
Elliptical thread design
A screw structure (10) is provided for male and female threads (14) having at least one thread (14) extending helically along a cylindrical support member (12) in spaced thread turns. A root...
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4790208 |
Knob and shaft assembly
A knob and shaft assembly for operating, for example, a vehicle air brake control valve includes a knob member having a front face and a barrel projecting the face, and a shaft member which is...
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4760887 |
Drill element for percussion drilling
The invention relates to a drill element for percussion drilling, the element having a cylindrical screw thread having one single entry. The screw thread, that is intended for thread diameters of...
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4759263 |
Fluid operated cylinder device
A fluid operated device includes a cylindrical housing whose opposing ends are closed by suitable end covers and which accommodates a piston rod supporting a piston and made of at least two parts...
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4752151 |
Coupling device for force transmitting member
According to the invention, a coupling device for a force transmitting member is provided. The coupling device contains a plurality of force transmitting members and a joint for coupling each end...
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4687368 |
Thread structure for percussion rock drilling
A thread structure for interconnecting two elements in a percussion drill string comprising an interior cylindrical thread and an exterior cylindrical thread. The threads have abutting flanks which...
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4602807 |
Rod coupling for oil well sucker rods and the like
A coupling for joining sucker rods in an oil well pump and the like, having a metal sleeve with an axially threaded bore and an exterior coating on the sleeve producing a cylindrical coupling, with...
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4577990 |
Coaxial coupling and locking mechanism
A coupling mechanism is disclosed for coaxially connecting a pair of connectable components, such as a pair of transducer assemblies each having a stator. A coupling ring is carried by one stator...
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4577053 |
Ground rod
A ground rod, coupling therefor and method of making that coupling are disclosed providing both strength and improved conductivity. Ground rods are usually copper coated or plated steel rods formed...
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4309122 |
Installation rod for an underground pipe installer device
The present invention pertains to a coupled sectional rod assembly of a type for use in an underground pipe installer device for, first, forming an underground hole between two given points and,...
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4304402 |
Dynamic exercise equipment
Compact, portable, light, easily assembled, dynamic, exercise equipment having a middle bar to which the first of ends of plural flexible springs are hooked and a footholder to which the other ends...
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4295751 |
Thread structure for percussion drill elements
A coupling thread structure for percussion drill elements including a rod (10) having an external thread (14), and a sleeve (24) having an internal thread (26) with the threads, when the sleeve and...
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4213504 |
Rotary, hand-held apparatus for performing various soil working operations
A portable, hand-held apparatus or implement employing various interchangeable soil working assemblies, wherein the latter rotate about an axis oriented substantially normal to the soil surface,...
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4143986 |
Rebar splice
A reinforcing rod splice for connecting reinforcing rods in end to end relation including a pair of hollow steel tubes and a coupling or sleeve, the tubes being mounted on the ends of the...
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