...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7326456 | Low density oriented strand board A low density oriented strand board has an average density of less than about 1.5 times the density of wood species used in the board and a homogenous vertical density profile. Low density OSB may be formed by preheating the wood finish prior to pressing, controllin... | 02/05/2008 |
| 7249678 | Sorting apparatus A sorting apparatus has at least two sorter cells arranged substantially one above the other. Sorter cells are fitted to a driving unit for moving the sorter cells from a horizontal loading plane to a horizontal discharge plane, both of which are assigned to the sor... | 07/31/2007 |
| 7132151 | Laminates of films and methods and apparatus for the manufacture A laminate of thermoplastic polymeric films comprises a fluted ply A and non-fluted ply B, adhered to one another in bonded zones along some of the flute crests the fluted ply A. The wavelength of the flutes is preferably no more than 3 mm. Ply A has a generally uni... | 11/07/2006 |
| 6953545 | Method for producing contoured vehicle floor mats having integrally formed nibs A method of producing contoured vehicle floor mats having integrally formed nibs. The sheet is formed by a nib forming roll in an extrusion roll stack having a plurality of indentions. The nibbed sheet is placed onto the thermoform mold with the nibs directed away f... | 10/11/2005 |
| 6655942 | Pressure casting apparatus utilizing with two-part moulds A apparatus for pressure casting sanitary appliances including an outer framework, at least one block slidable within the outer framework arid having a male mould part and a female mould part, a fixed endpiece for said framework being provided with the ma... | 12/02/2003 |
| 5249946 | Plate forming die set An apparatus for press forming products having a desired shape from a web is provided. The apparatus includes a cyclically operating blanking section for cutting the web to produce a single blank for each blanking cycle and a cyclically operating forming ... | 10/05/1993 |
| 5234332 | Molding process for multiple molds Molding press apparatus (20) for simultaneously operating a plurality of molds (M) having multiple mold parts (M1, M2) including, a framework (25), first and second platen assemblies (U,L) supported by the framework for carrying the mold parts of the mold... | 08/10/1993 |
| 4990299 | Multi-parting molding system with clamping means A desynchronously opened, stacked, multi-parting molding system includes left, center and right molding blocks for defining a left molding cavity between the left and center molding blocks and a right molding cavity between the center and right molding bl... | 02/05/1991 |
| 4957585 | High pressure lamination chamber A manufacturing device has an outer chamber in which a tool is mounted. The tool is shaped to receive a thermoplastic or staged prepreg. The tool has heaters embedded within it. The chamber region between the tool and the inside wall of the chamber is fil... | 09/18/1990 |
| 4943339 | Apparatus for manufacturing corrugated plywood composites A method and apparatus for forming corrugated plywood composites is disclosed. The apparatus includes a fixed mold component having a corrugated surface and a series of movable mold components having complemental corrugated surfaces movable toward and awa... | 07/24/1990 |
| 4636348 | System for thermoforming articles such as picnic plates in a pair of simultaneously fed, continuous thermoplastic webs which subsequently move into nested relation, and then dually trimming the nested articles from the webs A system for producing generally concavo-convex synthetic plastic containers and like articles, such as picnic plates wherein a mold station has a stationary intermediate mold with projecting male mold parts on one side and directly opposite recessed fema... | 01/13/1987 |
| 4369160 | Press and process for vulcanizing annular elements A press for vulcanizing annular elements, in particular belts for motion transmission is provided. The press can be used to vulcanize belts having different dimensions and shapes. A device for varying the distance between the pulleys on which the belts ar... | 01/18/1983 |
| 4365547 | Method and apparatus for controlling a press Control of a laminating press is attained by monitoring the temperature of the heating medium circulating through the press components.... | 12/28/1982 |
| 4363616 | Machine and part therefor The invention includes a sheet moulding machine and a roller for use with the machine. The roller is wave-shaped along its longitudinal axis and/or is cut with one or more longitudinal grooves. This roller is located in the sheet moulding machine together... | 12/14/1982 |
| 4212616 | Apparatus for forming boards from plant fibers A mobile forming station is provided which longitudinally orients plant fibers and compresses them into slugs. A plurality of bonding stations each include a plurality of chambers selectively positionable in alignment with an ejector of the forming statio... | 07/15/1980 |
| 4153405 | Three-deck vulcanizing press Relatively simple modifications of an existing three-deck vulcanizing press make it possible to greatly improve press productivity with a small investment in new equipment. The press is modified by providing a manually or automatically controlled wedge lo... | 05/08/1979 |
| 4146600 | Process of operating a vulcanizing press A process is disclosed for greatly improving the productivity of three-deck injection and compression and/or transfer molding presses used for making vulcanized rubber articles in which pressures are applied to both the upper and lower sets of vulcanizing... | 03/27/1979 |
| 4094619 | Apparatus for stretching and stripping belting in a multiplaten press This disclosure includes entry and delivery clamps arranged on opposite sides of a multiplaten press for clamping belting in order to apply a tension to the belting prior to pressing. The tension is applied by moving the entry clamp in a direction away fr... | 06/13/1978 |
| 3993423 | Multilevel vulcanizing press A multilevel vulcanizing press is provided which includes a press housing having at least two press levels. Each press level is capable of receiving a molding tool which can be opened and closed within the press housing. Each molding tool is comprised of ... | 11/23/1976 |
| 3964851 | Apparatus for curing elongate workpieces A web of unvulcanized rubber or other curable material moves intermittently in generally horizontal passes through several superposed stages of a multiplaten press by way of a pair of stretching stations flanking the press, each stretching station includi... | 06/22/1976 |
| 3960069 | Method and apparatus for controlling a press A method of controlling a laminating press in accordance with a predetermined time-temperature command profile and apparatus for use therein, are disclosed.... | 06/01/1976 |