Abstract:
A device is described that can be used by surgeons to provide quick and accurate face-lifting maneuvers that minimize the amount of tissue that has to be removed. The device comprises of a hollow undermining shaft with specially designed tip that can safely separate tissue planes and lyse fibrous tissue. Laser light can be delivered down the shaft to heat and cause tissue contraction. Device can also include a temperature sensor that can be used to control laser power. Optionally the device can also use ultrasound or electrosurgical energy to improve tissue lysing.
Abstract:
Self-driven vehicle for pipelines comprising: a cylindrically designed vehicle body (1) through which and/or around which the pipeline's (10) medium flows, a drive unit (2) on the vehicle body (1) which resiliently bears against the pipeline's (10) internal surface, a hydraulic system which powers the drive module (2), a power supply system for operation of the hydraulic system, and a controller (22) which at least controls the vehicle's movement in the pipeline (10).
Abstract:
A method of manufacturing overshoes made from an elongated rectangular flexible sheet of material. The method comprises the following steps: (a) gathering the sheet material by parallel stitching two elastic strips on the opposite side edge portions respectively of the sheet; (b) folding the sheet in two along its longitudinal center line, so as to bring the two gathered side edge portions in respective abutting register; (c) with an ultrasonic press, weakening narrow sections of the sheet transversely to the axis of the longitudinal center line, at regular intervals, and concurrently cross-bonding the sheet along both edge portions defined by each one of the weakened narrow sections of the sheet; and (d) detaching the desired segment of sheet of material along the line of bonding, for any one overshoe. Also, the products obtained by the above-described method.
Abstract:
A climbing rung is provied for anchoring to the wall of a manhole shaft. The climbing rung has a generally U-shaped core of two parallel legs spaced apart by a central tread. Each leg is sheathed in a pre-formed protective sleeve, closed at one end, by inserting the leg into the mounth of the sleeve. An injection moulded protective coating is bonded to the core of the tread and the core of each leg, extending to proximate the mouth of each pre-formed sleeve when a leg is sheathed therein, forming a sealing interface proximate the annular lip circumferentially defining the mouth of each sleeve. A method is provided including the steps of gripping the climbing rung only proximate the pre-formed protective sleeves when both legs are sheathed therein, so as to permit positioning the core of the tread and legs, extending only to proximate the mouth of each pre-formed protective sleeve, in an injection moulded cavity radially spaced equidistant the surface of the mould cavity. Advantageously, positioning pins inside the injection mould cavity for radially spacing the core of the climbing rung from the surface of the mould cavity are thereby not required.In another aspect of the invention it is not necessary to grip the step using pre-formed protective sleeves--all that is necessary is to alternately grip at last two oppositely spaced portions of the core of the climbing rung; alternately coating the portion of the climbing rung opposite the end which is being gripped.
Abstract:
Cleaning equipment for the sealing surfaces of a vessel, includes a remote-controlled carriage for running along a sealing surface, and a cleaning unit carried by the carriage.
Abstract:
Repair plug for sealing heat exchanger tubes, including a closure plug part being tightly connectable to a heat exchanger tube and having an end for insertion into the heat exchanger tube, and a polisher plug part disposed on the insertion end of the closure plug part axially in front of the insertion end in insertion direction thereof forming a single structural unit with the closure plug part, the polisher plug part remaining in the sealed heat exchanger tube after completing the tight connection.
Abstract:
In combination, a fuel assembly transfer cask having lifting devices and a shock-absorbing piston member associated with the underside of the transfer cask, the piston member including two mutually spaced-apart metal plates, a multiplicity of hollow metal bodies stacked on top of one another therebetween and fastening elements for fastening the piston member to the lifting devices.
Abstract:
A nuclear reactor plant has a fuel-element storage pit formed in a pit building and a pit adjacent thereto for safely lowering a fuel-element transporting cask therein, the adjacent pit being connected by a spur channel to the storage bit, a barrier separating the storage pit and the pit adjacent thereto, the barrier being at least one-half as high as the vertical length of the fuel-element transporting cask and being connected to the pit building in a manner as to be capable of withstanding at an upper edge thereof a lateral force equal to at least 10% of the maximum weight of the transporting cask.
Abstract:
A pressurized-water coolant nuclear reactor installation includes a reactor pressure vessel containing fuel elements and enclosed by a substantially spherical steel containment enclosure which is itself enclosed by a concrete secondary enclosure provided to protect the steel enclosure against external accidents. Also, it is necessary to provide a fuel element storage pool having adequate capacity for storing one complete off-site shipment of fuel elements. According to the disclosure, space is formed between the two enclosures which is sufficient to permit the storage pool to be located outside of the steel containment enclosure but inside of the concrete secondary enclosure, both enclosures normally being air-tight. Therefore, the fuel element storage pool does not have to be located inside of the steel containment enclosure, permitting a reduction in its size and, therefore, expense; at the same time the storage pool is fully enclosed in an air-tight manner via the secondary enclosure while avoiding the need for a separate outside building for enclosing the pool.
Abstract:
An automatic locking mechanism for the strap-winding pin is operated by a flywheel controlled by a pendulum-operated brake to lock the pin against rotation when the strap is suddenly pulled on. A balanced mass makes the mechanism insensitive to inclinations of the vehicle.