97results about How to "Limit radial movement" patented technology

Embodiments of the present invention include a specimen enclosure apparatus. The specimen enclosure apparatus includes a container having a cavity configured to receive the specimen and an opening extending through a neck of the container to the cavity. An internal flange is positioned intermediate the neck of the container. The specimen enclosure apparatus further includes a closure device configured to be received in the opening. The closure device has a flange seal portion configured to contact the internal flange to form a flange seal proximate the cavity and further has a radial travel limiter integrally formed with the closure device that is configured to contact the container in the opening to limit radial movement of the flange seal portion relative to the internal flange. Containers and closure devices are also provided.

A downhole tool for incorporation in a drill pipe for selective operation of the tool from surface level when the tool is in a wellbore. The tool comprises a controller electrically powered by a power source separate from surface level, a first sensor of the controller to detect a dynamic variable of the tool in the wellbore and produce an output signal dependent thereon; a second sensor of the controller to detect a mechanical signal transmitted from an operator at surface level; a motor driven by the power source under the control of the controller when said mechanical signal is received; and an actuator driven by the motor to actuate the tool; wherein the controller switches between at least two states in response to changes in said dynamic variable, only in said second state the controller being receptive to said mechanical signal from the operator to drive the motor.

A back reamer includes a drive stem configured to support a main reamer body, the main reamer body including a plurality of receptacles, and a plurality of cutting leg assemblies in positive locking engagement with the plurality of receptacles to restrict radial movement of the cutting leg assemblies.

A vibration dampening system for an air gun charging system includes a rear guide tube and a forward guide tube that are received within opposite ends of an air gun power spring, and a sleeve that fits concentrically over the power spring. The rear guide tube and the sleeve cooperate to reduce the free length of the power spring allowed to vibrate, which reduces vibration and improves firing performance.

The invention discloses a baffle rod type heat exchanger with a built-in expansion joint. The baffle rod type heat exchanger with the built-in expansion joint comprises a tube box assembly, a shell assembly, a tube bundle assembly and an expansion joint assembly, wherein the tube box assembly comprises a tube box cylinder, a tube box end socket, a tube box flange, a gas inlet and a gas distributor; the tube bundle assembly comprises a tube bundle, a left tube plate and a right tube plate are arranged at the two ends of the tube bundle, and the tube bundle assembly further comprises a short joint and a conical end socket; the expansion joint assembly comprises the expansion joint and a flange ring; the shell assembly comprises a shell pass cylinder, a shell pass end socket and a reinforcing tube; the tube bundle assembly is positioned in the shell pass cylinder, and the reinforcing tube extends to the outer part of the shell pass end socket from the inner part of the shell pass end socket; a cylinder flange is mounted at the end, close to the tube box, of the shell pass cylinder, and the left tube plate is clamped by the cylinder flange and the tube box flange of the tube box assembly; the right tube plate adopts a floating structure and is connected with the big end of the conical end socket through the short joint; and the small end of the conical end socket is connected with the expansion joint, the flange ring is positioned at the end part of the expansion joint, and the flange ring is hermetically connected with the end part of the reinforcing tube of the shell assembly.

Improvements in a semiconductor wafer container for reducing movement of semiconductor wafers within a wafer carrier using flexible wall segments, panels or flexible inserts in the base member's main inner containment diameter. These walls allow a vertical containment surface to move and capture the entire stack of wafers rather than a few wafers. The surface that contacts the wafers moves uniformly inward. The wafer stack is secured by reducing or eliminating the gap between the wafer container and the wafer stack. Further improvements include the addition of a ramped engagement surfaces in the top and/or bottom cover that provides mechanical advantage for easier assembly of the top and bottom cover. This design also allows for automated loading and unloading of the wafer stack because once the top cover is removed, the flexible walls spring back outward. Thus providing a small gap in which to freely remove the wafers.

One turbine, e.g. a high pressure (HP) turbine, has a conventional diaphragm and disc structure with impulse turbine stages. A preceding or following turbine, e.g. an intermediate (IP) turbine, on a common axis and on the same steam path, has a rotor drum which carries an annular row of moving blades having root portions held within a slot in the periphery of the drum. A turbine casing surrounds the drum and carries a static blade assembly with an annular row of static blades which, together with the annular row of moving blades, constitutes a modified turbine stage. The static blade assembly has a radially inner static ring with a radially inner side confronting the periphery of the drum. A seal acts between the inner static ring and the rotor. The static blade assembly has an outer static ring which has a substantially greater thermal inertia and stiffness then the inner static ring and which is capable of sufficient sliding relative to the casing in a radial sense to accommodate relative thermal expansion and contraction of the outer static ring and the turbine casing.

The present invention provides a composite board and the method for producing it, wherein the composite board includes a base material layer constituting the core part of the composite board; and a wear layer covering and fixed on the base material layer which includes fixings on its both sides, and when at least two composite boards are connected together, the fixings can be coupled with each other to relatively fix the composite boards. The aforementioned method and techniques can enable composite boards to be as rigid and wear-resistant as a tile and moreover, can reduce the time and labor costs required for the installation of the tiles by applying the base material layer in the installation of composite boards.