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| Number | Title | Issue Date |
| 5550346 | Laser sheet perforator An apparatus for cutting perforations in sheet material with a laser which includes a laser and servo motor controlled rotatable mirrors for focussing and directing a laser beam from the laser onto the sheet material so as to cut a perforation therein. An... | 08/27/1996 |
| 5539175 | Apparatus and process for optically ablated openings having designed profile A method and apparatus is disclosed for laser ablation of openings with a specified wall profile in materials such as polyimide. The method includes identifying the opening profile of choice. This profile of choice is then divided into convex portions whi... | 07/23/1996 |
| 5523544 | Perforated vacuum transport drum and method of manufacture A process for perforating a urethane anti-static filled coating of a metallic drum core with clean holes of substantially uniform size and shape. The process includes placing an electrically conducting absorbing tape between the urethane coating and the m... | 06/04/1996 |
| 5516998 | Laser beam machining process and apparatus A laser beam machining process and apparatus, applicable to laser beam perforation and cutting, in which a laser beam is directed onto a wall (4) of a component (6) to be machined from one side of the said wall and emerges on the other side thereof follow... | 05/14/1996 |
| 5507604 | Tapping assembly A tapping assembly comprising a main valve for selectively opening and closing a valve passageway, a support for holding the main valve adjacent a unit to be tapped, a drill for piercing a wall of that unit with the drill including a housing and a cutting... | 04/16/1996 |
| 5500504 | Nozzle for a tool for the working of material A nozzle for a tool for the working of material and having a nozzle body which is composed of electrically conducting material and carries a nozzle electrode in its tip region with the tip region of the nozzle body and the remaining region of the nozzle b... | 03/19/1996 |
| 5498851 | Laser machining apparatus and method A pulse laser beam of energy distribution having a plurality of peaks is generated (e.g. having a TEM01 mode or greater) and is directed onto an optical system. The system combines beam-condensing optical elements and multi-beam-splitting prism... | 03/12/1996 |
| 5453595 | Needle blank feeding apparatus A needle machining apparatus which presents a stock needle to a device for boring a hole in the needle. The apparatus also includes a needle feeding apparatus which provides high speed feeding of blank needles for the needle machining apparatus. A method ... | 09/26/1995 |
| 5444212 | Apparatus and method for producing a printing screen An apparatus for inking or printing on the surface of an item, such as a badge or emblem, is described. The apparatus incorporates a number of sub-systems including: an apparatus for holding and positioning blank screen material; a laser ablation system f... | 08/22/1995 |
| 5438441 | Method and apparatus for material processing with a laser controlled by a holographic element Apparatus and method for performing material processing, such as drilling or welding, with a high intensity laser beam operating in the infrared spectrum, using a reflective holographic optical element (HOE) the surface of which is prepared to contain an ... | 08/01/1995 |
| 5434383 | Piercing method for laser processing A piercing method using a laser, in which the processing time is made shorter; a thermal runaway is prevented; and dispersion of the processing time is made smaller. According to this method, piercing operation is started with an initial pulse frequency P... | 07/18/1995 |
| 5404889 | Device for perforating cigarette wrapping material by means of at least one laser beam A device for perforating cigarette wrapping material by means of at least one-laser beam, whereby the wrapping material, in the form of a strip, is fed past a focusing head which is supplied with a pulsed laser beam by a laser source and focuses it on to ... | 04/11/1995 |
| 5403990 | Apparatus boring perforations in a web sheet A rotating polygon mirror deflects a continuous laser beam, applying the deflected beam to a beam-splitting mirror through a focusing lens 6 which functions as an fθ lens. The beam is applied to the two reflective surfaces of the mirror alternately. As a... | 04/04/1995 |
| 5399828 | Laser tablet treatment system with dual access to tablet Tablet treating system 10 treats a series of pharmaceutical tablets 50T with pulses of laser energy 24P within at least one predetermined treatment site 50S on each tablet. A tablet conveyer 12 continuously moves individual tablets along a tablet path 10P... | 03/21/1995 |
| 5386430 | Excimer laser processing method and apparatus An excimer laser ablation processing for forming via holes in a resin film by irradiation of an excimer laser wherein, the emission of light caused during the decomposition of the resin during the processing is detected, its intensity is measured, and the... | 01/31/1995 |
| 5384945 | Device for forming drilled needle blanks An apparatus for preparing drilled needle blanks from a spool of coiled stock wire may include a laser for drilling a bore in the end of the stock wire and a cutting device for cutting the drilled wire into needle blanks.... | 01/31/1995 |
| 5382773 | Apparatus and method for fabricating a perforated web by light An apparatus for fabricating a perforated web comprising an endless masking plate arranged above a continuously conveyed web. The masking plate has a plurality of apertures arranged in a predetermined pattern, the masking plate being adapted so as to be c... | 01/17/1995 |
| 5375613 | Cigarette manufacture In cigarette conveying apparatus cigarettes are conveyed along a path so that they are intercepted in sequence by beams directed at different portions of the path to produce a complete circumferential row of perforations on each cigarette after it has tra... | 12/27/1994 |
| 5367144 | Air permeability detecting method and apparatus for the same In a method of controlling the air permeability of the hole portion of chip paper in which holes are formed by a laser, the flow rate of permeating air from an air permeable portion of a dummy prepared in advance and the flow rate of permeating air from t... | 11/22/1994 |
| 5347528 | Pulse laser irradiation apparatus for coated metal material In order to obtain a weld bead having a good outer appearance with little splash of sputters or the like and a sufficient shearing force, there is provided a flash lamp control section for controlling flash lamps so as to generate two rectangular waves in... | 09/13/1994 |
| 5336554 | Stretchable tear resistant porous elastomeric film elements and processes Process for providing thin elastomeric sheet elements with air-permeability and with improved resistance to tearing as a result of being punctured while in stretched condition. The process comprises exposing the sheet to interrupted, high intensity, narro... | 08/09/1994 |
| 5334815 | Apparatus and method for producing a printing screen An apparatus for inking or printing on the surface of an item, such as a badge or emblem, is described. The apparatus incorporates a number of sub-systems including: an apparatus for holding and positioning blank screen material; a laser ablation system f... | 08/02/1994 |
| 5310986 | Laser machining apparatus A laser machining apparatus comprises a mask, a reflecting mirror and an imaging optical system. The laser light reflected by the mask and also by the reflecting mirror passes through the mask and images on the work for machining the work. The laser machi... | 05/10/1994 |
| 5305015 | Laser ablated nozzle member for inkjet printhead In one of the preferred embodiments, an inkjet printhead includes a nozzle member formed of a polymer material that has been laser-ablated to form tapered inkjet orifices. The nozzle member is then mounted to a substrate containing heating elements, each ... | 04/19/1994 |
| 5302798 | Method of forming a hole with a laser and an apparatus for forming a hole with a laser A hole forming method with a laser beam and a hole forming laser apparatus improves the efficiency of hole formation without deterioration in the quality of the formed hole. In a hole forming method for forming holes in a plurality of articles by irradiat... | 04/12/1994 |
| 5294770 | Laser tablet treatment system with dual access to tablet Tablet treating system 10 treats a series of pharmaceutical tablets 50T with pulses of laser energy 24P within at least one predetermined treatment site 50S on each tablet. A tablet conveyer 12 continuously moves individual tablets along a tablet path 10P... | 03/15/1994 |
| 5291647 | Combined processing machine In a combined processing machine provided with a punching press mechanism and a laser head, a detector such as an electric micrometer is mounted on a cross slide provided for moving a workpiece on a work table with the aid of a work piece holder. The dete... | 03/08/1994 |
| 5275214 | Apparatus for unloading pressurized fluid An apparatus for unloading fluid, preferably pressurized gas, from containers in a controlled manner that protects the immediate area from exposure to the container contents. The device consists of an unloading housing, which is enclosed within at least o... | 01/04/1994 |
| 5259401 | Method of and apparatus for perforating cigarette paper and the like A running web or discrete tubular wrappers of rod-shaped articles of the tobacco processing industry are perforated with a variable-intensity high-energy pulsed laser beam which is controlled in such a way that the intensity of radiation and/or the length... | 11/09/1993 |
| 5258698 | Method and device for controlling the working depth for a numerically controlled machine tool The device is provided on a machine tool, wherein the drilling or milling operating head (12) comprises an axially movable spindle (14) and a workpiece hold-down (17), and wherein the working depth is controlled according to the relative position of the t... | 11/02/1993 |
| 5247948 | Filter assembly machine A filter assembly machine wherein one laser source emits a beam through a dividing device which divides the beam into two secondary beams directed respectively towards a cutting head for cutting a continuous strip into bands connecting double filters to c... | 09/28/1993 |
| 5210390 | Apparatus for boring perforations in a web sheet A continuously emitted convergent laser beam is deflected by means of a rotating polygon mirror, to be directed to a reflector mirror having a pair of reflective surfaces, which adjoin each other at the vertex portion thereof. As the reflective surfaces o... | 05/11/1993 |
| 5191188 | Method of preventing interference by a machining head A machining head interference preventive method for preventing an interference by a punching head and a laser head with work holders of compound equipment designed to perform a punch-pressing and laser machining. Horizontal interference areas wherein the ... | 03/02/1993 |
| 5189437 | Manufacture of nozzles for ink jet printers A method of manufacturing one or more nozzles for an ink jet printhead initially comprises bonding a nozzle plate to the ink ejection end of the printhead. A mask is then secured in contact with the nozzle plate, the mask having a plurality of apertures e... | 02/23/1993 |
| 5186184 | Cigarette manufacture Cigarette perforating apparatus comprises a rotary stepped reflector (5) for directing an incident laser beam (2) along a reflected path (2R) to produce axially spaced perforations on a cigarette. The size of the perforations is controlled by varying the ... | 02/16/1993 |
| 5182188 | Method of developing a self-developing resist Self-developing photoresists are developed by exposing the substrate on which they are exposed to a light beam or other energy source which is absorbed by the substrate and which raises the substrate temperature to the thermal decomposition temperature of... | 01/26/1993 |
| 5179965 | Apparatus for forming micro-holes on cylindrical objects In an apparatus for forming micro-holes on a cigarette, a laser beam is divided into first and second laser beams by a two-dividing mirror. Parts of the laser beams are detected by photo detectors, respectively and the other parts of the laser beams are g... | 01/19/1993 |
| 5168454 | Formation of high quality patterns for substrates and apparatus therefor An apparatus and method for accurately and rapidly machining a workpiece, particularly for drilling holes smaller than can be formed by other methods, by using a high power pulsed Nd:YAG laser. A low power HeNe laser is joined to the optical path of the h... | 12/01/1992 |
| 5166493 | Apparatus and method of boring using laser A two-step boring process is disclosed. A first step of the process is high speed rough boring by thermal processing using a long wavelength laser, and a second step is an optical chemical processing using a short wavelength laser for smoothing the bore w... | 11/24/1992 |
| 5155328 | Device for detecting cutting states in laser beam machining A device for detecting the state of cutting of metal sheet in laser beam machining. The device has a sensor head for catching and guiding light induced on a metal sheet in laser beam machining to a detecting section which includes an input amplifier, pier... | 10/13/1992 |
