Bizarre Patents
An automatic bed maker which uses the expansion of inflatable bladder to straighten, align, and tuck-in bed-cover assembly.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4093414 | Single die co-extrusion apparatus for insulation This invention is a single die by which thermoplastic insulating compounds can be co-extruded without any die for the first layer. It makes possible the extrusion of a high-density solid polyethylene skin layer over a cellular polyethylene primary insulat... | 06/06/1978 |
| 4081232 | Fixed center tooling for an extruder that provides for concentric layers of coating material A fixed center extruder die assembly is disclosed which serves to apply concentric layers of coating materials on an advancing core wire. The assembly which includes three concentrically arranged and interconnected components comprises an outer die block ... | 03/28/1978 |
| 4076568 | Process for the preparation of a multilayer film A continuous process for preparation of a multilayer film from thermoplastic material comprising processing in an extruder, feeding into a film blowing die having several concentric slots, stretching, blowing, bonding and winding up wherein the layers are... | 02/28/1978 |
| 4072455 | Spiral-line press for thermoplastic synthetics A spiral-line press with a double contra-screw arrangement fixed on a single shaft. Each of the screws on the spiral-line press have a length/diameter ratio of less than or equal to 14/1 and a combined L/D - ratio of less than or equal to 28/1. In additio... | 02/07/1978 |
| 4061461 | Compound extrusion die for producing an internally lined extrudate An extrusion die is disclosed for producing a compound extrusion in the form of a lined tubing where the materials forming the main tubing wall and the lining are difficult to bond. The die includes a plenum chamber in which there is spider-mounted a torp... | 12/06/1977 |
| 4060361 | Extruder apparatus for forming a tubular casing An edible collagen casing for sausages and the like comprising at least two layers of hardened ropes of collagen wherein the ropes of one layer are helically directed in one direction and the ropes of the other layer are helically directed in the opposite... | 11/29/1977 |
| 4056344 | Apparatus for producing composite extrusions An apparatus and method are provided for producing extrusions of two or more materials such as plastic polymers so as to utilize the characteristics of both materials in a single formation thereof. In one form, flexible and rigid polymers are coextruded t... | 11/01/1977 |
| 4054403 | Extruder with dual flighted extrusion screw An extruder has a single screw with two separate inlet hoppers feeding two separate screw flights to deliver two separate materials to a multiple channel extruder die.... | 10/18/1977 |
| 4047868 | Multilayer parison extrusion molding machine for blow molding A multilayer parison extrusion molding machine for blow molding which is characterized in that a main extruder and one or more sub-extruders are radially attached to special diehead and said die head comprises a core holder having a core pin at the lower ... | 09/13/1977 |
| 4042661 | Method and apparatus for forming tubular multilaminate plastic film Tubular multilaminate film having four or more layers can be made by A. combining two or more streams of dissimilar resins to form a first stream of parallel layers of the resins and feeding the stream into a first annular space wherein the stream divides into... | 08/16/1977 |
| 4028024 | Manufacture of filled capsules or the like From an extruder head a descending column of edible substance or medicament encased in a casing forming material of gelatin or dough is extruded. The casing forming material may be a single color or different colors on opposite sides. This column is pinch... | 06/07/1977 |
| 3994646 | Apparatus for producing double-walled tubes of plastic material An apparatus for producing a double-walled tube of plastic material having an outer corrugated wall and an inner wall connected to the inner crests of the corrugated outer wall, in which an extrusion head is arranged coaxially within mold means formed by ... | 11/30/1976 |
| 3994644 | Extruder head for extruding an outer tube or sheath about an inner tube or cable An improvement in an extruder head for extruding an outer tubular extrusion or sheath about an inner tube or cable which extrusion head has a means for passing an inner tube or cable through the extruder head which extruder head also terminates in a gener... | 11/30/1976 |
| 3980744 | Extrusion of hollow articles through a lubricated die A method for producing hollow articles comprises extruding a thermoplastic material, initially in a molten state, through a lubricated die having a mandrel for constraining the material into a tubular shape, cooling the outer surface of the material durin... | 09/14/1976 |
| 3972664 | Injection molding apparatus for manufacturing layered articles Method and apparatus for the intermittent manufacture of multi-layer shaped thermoplastic parts with a foamed core and an unfoamed shell, where at first a part of the unfoamed plastic and later a plastic that contains a foaming agent is injected simultane... | 08/03/1976 |
| 3966377 | Blowhead for tubular film In a blow-head for producing tubular film from thermoplastic molten material and comprising a housing with a central supply conduit for the molten material, distributing passages radiating from the supply conduit to a respective distributing helix of an i... | 06/29/1976 |
| 3959057 | Means and method for producing plastic netting A means and method for producing plastic netting wherein a hot pneumatic fluid such as nitrogen is used to blow filaments of one circular row of plastic filaments into contact with another circular row of plastic filaments which rows are concentric with e... | 05/25/1976 |
| 3957565 | Apparatus for extruding plastic netting Apparatus for and methods of extruding tubular plastic netting from extrusion orifices in concentric, counterrotatable inner and outer dies in which the plastic filaments extruded therefrom have substantially the same downward relative velocity so as to f... | 05/18/1976 |
| 3957566 | Apparatus for making laminated thermoplastic film Several thermoplastic tubes to be bonded to one another are jointly extruded through concentric annular orifices while cool air is blown from annular Venturi nozzles in concentric streams past the outer surface of the outermost tube and past the inner sur... | 05/18/1976 |
| 3947178 | Apparatus for making filled food products A method and apparatus for making filled products of various shapes and sizes and the products. The products can be toroidal, rings of interconnected knobs, crescent-shaped, spherical or other shapes, each having one or more discrete spots or globs of fil... | 03/30/1976 |
| 3947173 | Apparatus for extruding concentric plastic sheaths First and second concentric insulating sheaths of plastic materials are formed continuously around a filamentary core advancing longitudinally through an extrusion chamber. The core is passed axially through a tapered entrance portion and a coaxially alig... | 03/30/1976 |
| 3945785 | Apparatus for filling edible products Methods and an apparatus for filling doughnuts or like edible products with a filling in which the product is extruded over and through a hollow, annular filling nozzle such that the product material flows closely past radially, outwardly directed dischar... | 03/23/1976 |
| 3930773 | Machine for making cinnamon rolls and the like A machine for making cinnamon rolls and the like with dough fed from a reciprocating hopper through forms inside dough discharge outlets to provide a simple spiral, or other, configuration into expressed dough, the forms having tubular portions through wh... | 01/06/1976 |
