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| Number | Title | Issue Date |
| 3972976 | Method for longitudinal stretch of a parison to be blow molded This injection blow molding method has special provision for maintaining the plastic of a parison on a core rod at the orientation temperature of the plastic; and stretching the plastic of the parison lengthwise of the core rod for orientation in the dire... | 08/03/1976 |
| 3967996 | Method of manufacture of hollow pieces A method of manufacturing hollow pieces comprising the steps of forming a blank of single sheets each having a layer of gluing substance applied thereto; placing the blank onto an appropriate mandrel and subjecting it to a preliminary compression so as to... | 07/06/1976 |
| 3966871 | Method and apparatus for inspecting tubular cavities To inspect an internal zone of a tubular cavity having an open end, for example, a zone of possible damage in a heat-exchanger tube, an elastically hardenable casting plastic is transported to the zone and cast against the surface embraced by the internal... | 06/29/1976 |
| 3962393 | Method for making a hollow laminated article A method is disclosed for fabricating in a single stage hollow polymeric article of manufacture from a flexible fibrous material, regardless of the degree of complexity of the laminate. The material is applied to a hollow flexible envelope which includes ... | 06/08/1976 |
| 3962394 | Method for molding fiber reinforced composite tube A fiber reinforced composite tube is molded by applying an annular, liquid-resin-impregnated layer of reinforcing fibers to a cylindrical mold or mandrel; placing in contact with the exposed surface of the fiber-resin layer a compression sleeve which is s... | 06/08/1976 |
| 3960998 | Method for producing large rigid foam panels A method for making a panel of plastic foam includes first coating a flexible ribbon on one side with foam and immediately thereafter while the foam is soft and flowable, laying the ribbon on a form with the foam coated side against the form. Length after... | 06/01/1976 |
| 3956452 | Dry-type isostatic pressing method involving minimization of breaks or cracks in the molded bodies A method for avoiding cracking of the molded body during the decompression step in an isostatic pressing method of molding. The powders to be molded are housed in a shaping rubber mold, are molded under pressure, and the improvement is characterized by su... | 05/11/1976 |
| 3949988 | Racket The racket comprises a closed frame, a stringing which is stretched in this frame and forms a striking surface, and a handle for holding the racket. The handle merges at one end into the frame and forms an integral body therewith. Said body comprises an e... | 04/13/1976 |
| 3944645 | Method for balloon blown plastic molding This invention is a method of making blown plastic articles on an injection blow molding machine with an expandible balloon that covers the core rods and over which a parison is applied at an injection mold station. The parison can be blown at lower tempe... | 03/16/1976 |
| 3940463 | Relating to the repair of tires Apparatus for curing a tire repair wherein an electrical heater pad is placed against the repair area on the inside of the tire, and is supported by a flat air bag which lies against the inside of the tire, and is supported by a sausage-shaped air bag. An... | 02/24/1976 |
| 3937781 | Method for forming fiber-reinforced plastic articles Hollow, reinforced plastic articles are molded in a closed molding chamber by employing an internal expandable bag to define the inside surface of the article to be molded. A nonstretchable sleeve surrounds at least a portion of the bag so that, when the ... | 02/10/1976 |
