169results about "Branding equipment" patented technology

In order to produce on the table of a diamond gemstone (7), an information mark which is invisible to the naked eye using a x10 loupe, an ultraviolet laser (1) having a wavelength of 193 nm is used in association with a mask (2) to irradiate the surface of the stone (7) at a fluence of less than 2 J / cm2 per pulse and with not fewer than 100 pulses, in the presence of air which reacts with the diamond (7) and causes the mark to be formed without any darkening which is visible when viewing using a microscope.

A marking (3 to 5) is provided in a surface (8) of an element (1) which comprises a substrate (6) of aluminum or an alloy thereof and an anodized outer layer (7) in that a region (10) of the surface (8) is irradiated with a laser beam such that at least one visual property of the surface (8) in said region (10) is changed and a visual marking (3 to 5) is obtained which is observable to the human eye. The laser beam penetrates the anodized outer layer (7) at least to a major degree and induces the change in the at least one visual property substantially locally only in a zone (9) where the anodized outer layer (7) adjoins the substrate (6).

A laser energy microinscribing system, comprising a semiconductor excited Q-switched solid state laser energy source; a cut gemstone mounting system, allowing optical access to a mounted workpiece; an optical system for focusing laser energy from the laser energy source onto a cut gemstone; a displaceable stage for moving said gemstone mounting system with respect to said optical system so that said focused laser energy is presented to desired positions on said gemstone, having a control input; an imaging system for viewing the gemstone from a plurality of vantage points; and a rigid frame supporting said laser, said optical system and said stage in fixed relation, to resist differential movements of said laser, said optical system and said stage and increase immunity to vibrational misalignments. The laser energy source is preferably a semiconductor diode excited Q-switched Nd:YLF laser with a harmonic converter having an output of about 530 nm. The system may further comprise an input for receiving marking instructions; a processor for controlling said displaceable stage based on said marking instructions and said imaging system, to selectively generate a marking based on said instructions and a predetermined program; and a storage system for electronically storing information relating to images of a plurality of workpieces. A secure certificate of authenticity of a marked workpiece is also provided.

A portable engraving system comprises an enclosure adapted to operably accommodate an engraving device, wherein the enclosure comprises an adjustment system. The adjustment system comprises one or more adjustable devices, and the adjustable devices are adapted to adjust a distance between the enclosure and a work surface thereby allowing adjustment of the distance between the enclosure and the work surface, whereby the enclosure is adjustable with respect to the work surface. The enclosure further comprises an opening wherein the engraving device is operably positioned thereto, whereby the work surface is accessible to the engraving device therethrough. The enclosure is positionable adjacent the work surface and operably disposed thereto.

A portable engraving system comprises an enclosure adapted to operably accommodate an engraving device, wherein the enclosure comprises an adjustment system. The adjustment system comprises one or more adjustable devices, and the adjustable devices are adapted to adjust a distance between the enclosure and a work surface thereby allowing adjustment of the distance between the enclosure and the work surface, whereby the enclosure is adjustable with respect to the work surface. The enclosure further comprises an opening wherein the engraving device is operably positioned thereto, whereby the work surface is accessible to the engraving device therethrough. The enclosure is positionable adjacent the work surface and operably disposed thereto.

The present invention discloses one wood floor board with laser engraved patterns and its making process. The wood floor board with laser engraved graphics, texts or antiskid patterns is made through the first computer typesetting to design patterns, and the subsequent CO2 laser engraving to form vivid stereo images by means of local high temperature to gasify wood material.

The subject of the invention is a rotary tube (1), in particular for a rotary tubular kiln for the production of activated charcoal, according to the invention the rotary tube (1) being provided on its outside with at least one reinforcing element (8) for stabilizing the rotary tube (1) in the operating state. As a result, the rotary tube (1) exposed under operating conditions to high temperatures and consequently easily deformable is stabilized in its cross section and / or in its longitudinal direction, depending on the arrangement of the reinforcing element. In particular, the rotary tube (1), for example when it is used for the production of activated charcoal, with the accompanying high operating temperatures, is equipped with efficient resistance to pronounced pressure fluctuations occurring due to the method employed and is therefore also suitable, in particular, for carrying out processes under reduced or increased pressure.

A method and device for producing subsurface markings in a transparent material body by focusing a pulsed laser beam in the interior of the material body so that the laser beam exceeds the destruction threshold of the material body to produce a permanent marking. Individual markings form a freely selectable internal engraving as a result of a relative movement between the laser beam and the material body. The laser pulse is varied with respect to its pulse energy (P) by means of a discharge pulse (E) that has an adjustable time delay from an excitation pulse (A). Markings that have varying optical properties depending on the pulse energy (P) are produced in this fashion.

A variable wood burning tool for burning woods at varying temperatures and providing alternate uses essentially comprised of a container and a lid hingedly secured thereto. An interior surface of the lid has a heat resistant tray disposed therein. A heating element is disposed within the container. A burning wand is operatively coupled with the heating element. A plurality of tips are provided that are each adapted for removably coupling with the burning wand.

A matrix is formed into a desired shape by pouring transparent liquid material into a mold. The material progresses from the liquid to the gelatinous state. Laser sculpting steps are performed when the material is still in a gelatinous condition to form small spots in the matrix. Because the material is non-solid gel when the laser beam applies its focused energy, there is no cracking or destruction. Intensity and duration of the laser pulse determine the size of the spots as does the timing in relation to the matrix material finally changing from gel to solid. Particular visual effects are produced at different degrees of solidity when sculpting. The liquid in the mold may be pressurized for removal of air bubbles after initial pouring of the matrix material and application of pressure after the laser sculpting controls the size of the spots in the finished product.

The invention relates to methods for marking valuable articles, mainly precious stones, in particular cut diamonds and can be used for article identification. The inventive method for marking valuable articles consists in forming a mark image visible in reflected light on a polished surface by modifying the ions of a surface area to be marked by means of the ion beam having the given ion energy and, while modifying, in converting the structure of the surface layer of a base in such a way as to change the optical characteristics of the modified areas in comparison to the optical characteristics of the untreated areas of the surface to be marked. The area to be marked is modified by a pulsed ion beam through a stencil mask by ion implantation of a modifier into a crystal lattice in the marked area of the base surface layer without destructing covalent bonds between the lattice atoms, i. e. without breaking the original shape of said layer. The optical characteristics of the modified area are changed by using, in the form of a modifier, the material, the ions of which change the integral refraction index of the base material when they are implanted into the crystal lattice in the form of impurity additives.