The present invention provides an illuminating surface, e.g. a floor or wall tile, that includes an array of identical circuits (G, K, H, L) that can each be connected to a power source/14). The surface emits light in the presence of an object touching or in close proximity to the surface. Each circuit includes a sensor (12), e.g. a pressure switch, for detecting the presence of the object; at least one light source (20) that is illuminated when the sensor of that circuit detects the presence of...

It has been discovered that an inductor may be made to include a surface rotational portion instead of a coil to provide a low inductance inductor with sufficient quality factor. The surface rotational portion is a conducting structure which is substantially enclosed along the length of the structure and which has openings at each end of the structure and an opening along the length of the structure between the end openings. One example of such a structure is a cylinder having a lateral opening ...

A surface tracker includes a tubular marker body having an interior electronic marker and a visual indicator attached to an upper end of the marker body which extends away from the marker body. When deployed, the marker body is mostly underground and the visual indictor extends upwardly from the ground level to provide above-ground visual recognition. The electronic marker may be a passive electronic marker that includes a ferrite core assembly having a longitudinal axis which is generally paral...

A surface modifier comprising a block copolymer obtained by polymerizing a polyfluoroalkyl group-containing compound in the presence of a chain transfer agent composed of a polysiloxane having a mercapto group at its terminal, said block copolymer containing polymer segments of said polysiloxane and polymer segments of said compound, as essential components.

Surface wellhead apparatus for use in tying-back casing from a subsea structure to a surface structure or when drilling with mudline-supported casing hangers wherein the casing is maintained in tension by means of a lock member which releasably engages with a support surface, the lock member and support surface being, on release, relatively movable in a direction longitudinal of the casing and, on engagement, locked against downward movement of the casing.

A surface analyzer for analyzing physical properties of the surface of a sample by means of PELS (Proton energy loss spectroscopy) in which accelerated ion beams such as proton beams impinge on the sample in the vertical direction to the surface of the sample and ion beams scattered from the sample are decelerated and then detected by an analyzer to analyze the energy loss of the ion beams. The surface analyzer comprises an ion beam source for generating ion beams, deflecting means for deflectin...

Described is a process for producing a biomolecular monolayer on a biosensor surface comprising the steps of: reacting a biosensor surface with a solution of heterobifunctional reagent having a first functional group and a second functional group, the first functional group being capable of forming a covalent bond to the biosensor surface groups, the second functional group forming a covalent bond with a homobifunctional polymer to obtain a self-assembled monolayer, and thereafter reacting the m...

A surface tracker includes a tubular marker body having an interior electronic marker and a visual indicator attached to an upper end of the marker body which extends away from the marker body. When deployed, the marker body is mostly underground and the visual indictor extends upwardly from the ground level to provide above-ground visual recognition. The visual indicator may be a plurality of resilient filaments which pass through a hole in a tab portion of the marker body at the upper end ther...

The surface finisher is an attachment for an angle grinder or other handheld prime mover that precludes the need to finish uncured concrete or other viscous, semi-fluid materials by hand. The surface finisher is a disk having a series of radially disposed blades extending from the plane of the disk, with the blades flexing over the surface to which they are applied to smooth the surface during operation. The disk and blades may be formed as a single, integral component, or may alternatively be f...

A simulated clay tennis surface has a first region tufted with synthetic ribbons of a first height, and a second region tufted with synthetic ribbons higher than those of the first region. A granular infill material is applied to a depth which covers the ribbons in the first region, but leaves the tips of the ribbons of the second region visible to form court markings of a contrasting color to the infill material.