Celebrity Inventors
Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 7325434 | Method for manufacturing ring-shaped magnet material and manufacturing apparatus used therefor A method for manufacturing a ring-shaped magnet includes arranging, in a penetrating hole formed in a die, a mandrel having a cylinder tip portion of a diameter d1, a cylinder base end portion of a diameter d2, provided d1 | 02/05/2008 |
| 7197415 | Laser alignment method and apparatus A method for setting or calibrating a machine tool wherein the critical components the machine tool are identified as are the critical devices that are employed to affect their position and each of the possible positions to which each of the critical devices may be ... | 03/27/2007 |
| 7134314 | Hydraulic tool automatic adjusting die holder A hydraulic tool working head including a frame; a ram movably connected to the frame in a first longitudinal direction, wherein the ram is adapted to be moved relative to the frame by hydraulic fluid; and a movable member connected to a first end of the ram by an a... | 11/14/2006 |
| 6581431 | Eccentric pipe sections An extrusion tool for an extrusion press for manufacturing seamless, eccentric pipe sections--in particular pipe sections with circular outer and inner contours--from extrusion blocks, in particular from extrusion billets. The extrusion tool contains a co... | 06/24/2003 |
| 6470726 | Method for manufacturing an extruded article changing in cross-section and an apparatus for extruding said extruded article An extruded article which has at least one hollow portion and changes in cross-section along a direction of an extrusion axis is manufactured by the method. The method includes the step of advancing a punch to extrude a billet while controlling a movement... | 10/29/2002 |
| 6233997 | Metal-extrusion press A frame-like traveling beam carrying a hollow press ram of a metal extrusion press and in which a traverse carrying a piercing mandrel is guided, has the side walls of that traveling beam progressively reduced toward a midpoint from each end along the gui... | 05/22/2001 |
| 5989466 | Variable section extrusion die set and variable extrusion molding method By using a variable section extrusion die set which includes a die set (24) displaceable in a first direction orthogonal to an extrusion direction of a molding material and in a second direction perpendicular the first direction and adapted to vary an are... | 11/23/1999 |
| 5878616 | Centering plug for pipe press This invention relates to a method of extruding pipes on horizontal presses, and in particular relates to a method of extruding pipes wherein a removable centering plug is provided to prevent displacement of the central guide rod during the initial stages... | 03/09/1999 |
| 5687604 | Thermal controlled mandrel with replaceable tip for copper and brass extrusion An improved cooling system is provided in a piercing mandrel used in extruding tubular material made of metals having extruding temperatures above the annealing temperature of H13 tool steel such as brass, copper and the like. The piercing mandrel has a r... | 11/18/1997 |
| 5595085 | Aluminum extruding machine An aluminum extruding machine which includes four guide rods connected between two opposite upright blocks above the machine base, a fixed die holder, a material carrying barrel moved on the guide rods relative to the die holder to carry molten aluminum, ... | 01/21/1997 |
| 4928375 | Method of forming a hollow fastener from sheet metal A method of forming an integral fastener such as a rivet on a sheet metal component such as part of a clutch plate assembly. The method involves placing the metal sheet between a pair of dies so that portion of the sheet overlies a cavity in one die. The ... | 05/29/1990 |
| 4809531 | Means and method for removing trapped billets from indirect extrusion press Metal billets trapped in the billet container of an indirect extrusion press are removed by indirect extrusion in the reverse direction until the billet size is reduced sufficiently for the residue to be expelled bodily from the container. The stem used t... | 03/07/1989 |
| 4785648 | Method and apparatus for embossing the inside surface of a cup-shaped article A draw/emboss work station (18) of the invention includes emboss punch apparatus (86) moveable by a lever (340) and a hydraulic system under control of a press slide (34). Pressure sleeve apparatus (92) is slideable with respect to the emboss punch appara... | 11/22/1988 |
| 4781053 | Indirect extrusion process and machinery therefor An indirect extrusion process, and apparatus therefor, for producing an extrusion product from a hot metal billet. A press container is mounted to be substantially axially stationary during extrusion of a billet. A hot billet, a die and a pressure disc ar... | 11/01/1988 |
| 4744236 | Method of and apparatus for indirect extrusion Double-stem type extrusion method and apparatus used for extrusion-molding rod-like and tubular products. In order to upset a solid or hollow billet (5, 5A) supplied to a container (1), the end of the container (1) which is on the side of a press stem (6)... | 05/17/1988 |
| 4696176 | Pullback type double-acting indirect extrusion press A pullback type indirect extrusion press capable of extruding a tubular article, the press including first and second movable platens connected to each other by columns, the movable platens being arranged in front of and behind a fixed platen, a mechanism... | 09/29/1987 |
| 4653305 | Apparatus for forming metallic article by cold extrusion A method and apparatus for cold working a metallic blank having a central hole into a substantially annular or cylindrical article such as an internally and or externally toothed gear, with the method including forcibly inserting a hollow metallic blank a... | 03/31/1987 |
| 4546634 | Methods and apparatus for initiating tubular extrusion Methods and apparatus for initiating extrusion of elongated hollow product, more particularly cylindrical tubular product, by increasing the space between the end of a mandrel and an opposed extrusion die during extrusion start-up and thereafter gradually... | 10/15/1985 |
| 4522052 | Processes and devices for the drawing of tubes by extrusion A process and device for drawing tubes by extrusion of a metal billet (4) placed in a receptacle (50) within which ramming of the billet (4) is carried out by first pushing the latter against a ramming insert (63) closing the receptacle (50), then perfora... | 06/11/1985 |
| 4400964 | Method and device for continuous production of flanged hollow article A blank material having a configuration corresponding to the flange part of the article is first punched by a punch member and a die member from a planar strip material, the blank is press-formed into a hollow article by further pressing the punch member ... | 08/30/1983 |
| 4399676 | Mandrel cleaning device for extrusion press A mandrel cleaning device capable of automatically performing cleaning operation in an extrusion press of the type which has a pressurizing stem for pressing a billet in a container toward a die and a mandrel axially slidable in and relative to the pressu... | 08/23/1983 |
| 4365497 | Intermediate frame type indirect extrusion press In an indirect extrusion press of the type wherein a die stem is connected to a press axis on the rear end surface of a press platen and extends towards a container, an intermediate frame type indirect extrusion press including an intermediate frame movab... | 12/28/1982 |
| 4345450 | Reverse extrusion press In an indirect extrusion drawing press comprising a fixed crosspiece to which is fixed a tubular ram which is perforated by an axial orifice for the removal of the wire, a fixed bearing member, a movable crosspiece which is moved by a main jack bearing ag... | 08/24/1982 |
| 4313327 | Extrusion die for forming multi-passage tubular members An extrusion die for forming a multi-passage, elongated tubular member having transverse passageways formed between adjacent longitudinally extending passageways during the extrusion of the tubular member.... | 02/02/1982 |
| 4230661 | Indirect extrusion process An indirect extrusion process making use of an apparatus having a main ram and a container which are adapted to be driven independently of each other, the container being moved during the extrusion at a speed equal to or higher than that of the main ram, ... | 10/28/1980 |
| 4223548 | Process and device for extruding hollow sections A process for the extrusion of tubes or similar hollow sections from a billet is disclosed within the billet is forced against a hollow extrusion die surrounding a mandrel and a mandrel support. A core passing through the extrusion billet moves in the dir... | 09/23/1980 |
| 4206626 | Extrusion press for extruding tubes In tube extrusion presses, there are two steps in production. Firstly, a mandrel pierces a hole through the center of a billet, the tip of the mandrel ending up just within the opening of the extrusion die. Secondly, the now hollow cylindrical billet is e... | 06/10/1980 |
| 4165627 | Method and apparatus for closing the end of an extruded tube submerged in water In the direct extrusion of tubing wherein the extruded tube or tubing is immediately submerged into water after extrusion and having a closed leading end, the trailing end thereof in the extrusion press is sealed off from the entrance of water by a crimpi... | 08/28/1979 |
| 4084422 | Extrusion press An extrusion press having a press stem which can be articulated to a limited extent at its base mounting in order to allow the stem to be exactly aligned with a billet containing bore; a centering sleeve provided at one end of the bore to guide the stem; ... | 04/18/1978 |
| 4050281 | Extrusion press with multipurpose side cylinders A stationary main cylinder, spaced behind a billet-receiving container located behind an extrusion die, contains a ram projecting from the front end of the cylinder. Piercer cylinders are mounted on the opposite sides of the main cylinder and have open fr... | 09/27/1977 |
| 3977225 | Forging method Apparatus and a method of employment thereof for forging cylindrical shells of controlled interdimension wherein a single punch die mandrel and cushion cooperate at a single work station to subject a metal blank to high multi-axial stress sufficient to in... | 08/31/1976 |
| 3950979 | Apparatus and method for tube extrusion A chamber having a first end and a second end and receiving a billet having an aperture therethrough slidably receives through the first end a die. A mandrel slidably extends through the second end of the chamber into the aperture of the billet and has a ... | 04/20/1976 |
