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| Number | Title | Issue Date |
| 7114751 | Composite liner for oilfield tubular goods A composite lined tube is disclosed having end couplings. The tube includes a resin impregnated fiber preform pressed progressively along an inner wall of the tube. The tube may further include an inflatable bladder inserted into the tube. The bladder is adapted to ... | 10/03/2006 |
| 5642184 | Method and apparatus for vacuum contact printing Apparatus and method for contact printing uses a vacuum contact plate and a screen frame to hold a master film sheet in contact registration with a screen having a region that is substantially porous to the passage of air disposed about a central photosen... | 06/24/1997 |
| 5424805 | Vacuum blanket lifting apparatus Vacuum frame apparatus is provided for maintaining precise registration between and an image forming sheet to be reproduced and a light sensitive sheet adapted for controlled exposure to light. The apparatus includes a light transmitting glass panel havin... | 06/13/1995 |
| 5394220 | Vacuum blanket for pin registration A vacuum blanket apparatus for maintaining precise registration between an image forming sheet and a light sensitive sheet when subjected to controlled exposure to light passing through a glass panel includes a vacuum blanket having an upper cover of flex... | 02/28/1995 |
| 5300973 | Track image registration system A slide track, pin registration system for registering photosensitive media to light exposure equipment. The system includes one or more slide tracks and each of which contain media registration pins. The slide tracks are orthogonally mounted within groov... | 04/05/1994 |
| 5116718 | Contact printing process Disclosed is a method for increasing the resolution in contact printing operations by ensuring an intimate contact between the mask and photoresist. A flow of air is directed at the underside of the workpiece being printed while the mask is in place to pr... | 05/26/1992 |
| 4935773 | Vacuum blanket A vacuum blanket for holding a sensitive sheet of material in precise registration with a film master against a rigid transparent plate includes a blanket of thin, flexible material having at least one vacuum port therein and an inside face opposing the r... | 06/19/1990 |
| 4704028 | Vacuum printing frame A vacuum printing frame includes a backing plate; a pressurizable bladder assembly positioned on the backing plate, the bladder assembly including a lower wall positioned on the backing plate, a plurality of partitions sealed around lower edges thereof to... | 11/03/1987 |
| 4669870 | Vacuum contact system A vacuum contact system has a vacuum contact frame including a bi-layer blanket having top and bottom layers spaced apart by a number of parallel strip members to define a first space. A bead is positioned around the outer edges of the top layer to suppor... | 06/02/1987 |
| 4504142 | Photography printing frame An improved contact photo vacuum frame includes a specially constructed inflatable bladder which backs up the pressure blanket. The bladder is divided into a plurality of interconnected compartments by means of partitions, arranged in such a way that the ... | 03/12/1985 |
| 4218137 | Isolating member for use in contact printing Apparatus and method are disclosed for use in contact printing information from a master record carrier onto a replicate material of a type that emits a gas during the contact print exposure (e.g., a diazo film emulsion). Even though the master record car... | 08/19/1980 |
| 4142794 | Step and repeat system A step-and-repeat registration system is disclosed for making multiple-image plates for use in flexographic printers or the like. The negative which carries the image to be transferred to a light-sensitive film, is referenced with respect to a fixed frame... | 03/06/1979 |
| 4087181 | Plunger assembly A plunger assembly for pressing together two smooth layers of material against a firm planar supporting surface without entrapping air between the layers. The assembly includes a soft resilient pad having adjacent surfaces disposed at an obtuse angle and ... | 05/02/1978 |
