Abstract: A trenchless mechanical lining apparatus for continuous repair of underground pipes and culverts, and a method of installation. The apparatus includes a plurality of core elements, each having a first end and a second end, the second end being an enlarged receiving end configured to receive a first end of a successive one of the core elements; a sealant to secure a first end of a first core element to a second end of a second core element; the core elements having lengths configured to span a length of a repair site; and a system for applying longitudinal pressure to secure the first core element to the second core element, the system including a cable and securing device, the latter configured to be attached to an end of an enlarged receiving end, and a pressure-applying device for forcing the first and second core elements together.

Abstract: An apparatus and method for internal repair of pipes and conduits, such as sewer pipes, pressurized water mains, water wells, and natural gas lines. The conduit repair apparatus includes a sleeve with locking mechanism to lock the sleeve in a tubular configuration. The sleeve is made of metallic or rigid plastic sheet having perforations. Some of the perforations are shaped like elongated slots and strips. A number of resilient O-rings are applied over the outer surface of the sleeve. A resilient membrane is applied over the O-rings. In one embodiment, a reinforcement band is used, and an additional layer of O-rings are included between the membrane and the reinforcement band.

Abstract: An apparatus and method for internal repair of pipes and conduits, such as sewer pipes, pressurized water mains, water wells, and natural gas lines. The conduit repair apparatus includes a sleeve with locking mechanism to lock the sleeve in a tubular configuration. The sleeve is made of metallic or rigid plastic sheet having perforations. Some of the perforations are shaped like elongated slots and strips. A number of resilient O-rings are applied over the outer surface of the sleeve. A resilient membrane is applied over the O-rings. In one embodiment, a reinforcement band is used, and an additional layer of O-rings are included between the membrane and the reinforcement band.

Abstract: An apparatus and method for the forming of corrugations in cylindrical objects or plain sheets, which include but no limited to two or more rotating spline or keyed shafts with internally grooved sliding wheels. Springs or collars with elastic properties are located between sliding wheels to allow them to keep predetermined distance which varies under axial forces.

Abstract: Apparatus and method for repairing underground conduits, such as well casings, particularly for repairing internal casings of deep wells. More particularly, the invention relates to a filter-sleeve and a method of conduit repair using such sleeve, without complete removal of the conduit or casing and without abandoning the well.

Abstract: An apparatus and method for patient care and cleaning. Included are semi-disposable pants, a mattress, a care materials inflow preparation unit, a waste fluid container, a control unit, and a remote control device. The body area to be washed is covered with pants, providing a soft container having fittings connecting it to a wash liquid supply and effluent disposal hoses. The pants provide hollow spaces that contain absorbent material in the region that may otherwise be smeared with excrement on the path to the outflow port. The waist and femoral regions of the pants are provided with sealing rings for sealing of the space inside the pants during waste handling cycles of the patient care, and unsealing when this cycle is completed. The pants are provided with vibrators for creating a scrubbing action during the washing cycle. Air supply into the pants during washing is added to enhance scrubbing.

Abstract: A conduit lining system and a method for lining conduits, particularly conduits in need of repair. The system includes a longitudinally extending liner, initially transversely curled in a pre-installation position but being capable of becoming uncurled in an installation position to form a longitudinally extending generally cylindrically shaped liner for placement adjacent an interior surface of a conduit to be lined or repaired. The liner has longitudinally extending locking edges which become mutually engaged as a torpedo-shaped member is inserted within the liner, while in the curled pre-installation position, and the member is moved longitudinally therethrough.

Abstract: Method and apparatus for internal repair of conduit system. An inner sleeve is employed which is configured to avoid undue pressure being applied to the inner surface of a damaged conduit section as it is expanded into position. A grouting area is defined between the outer surface of the sleeve and the inner surface of the conduit section or sections being repaired. In one embodiment, a layer of open-celled material is placed around the coiled sleeve, which is thereafter impregnated with a quantity of grout. In this embodiment of the invention, each longitudinal end of the sleeve is flared outwardly for contacting the inner surface of the damaged conduit section and for retaining the grout as it is squeezed out of the gasket upon the expansion of the inner sleeve to its expanded and locked position.