Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 6604930 | Concrete block molding machinery A molding machine for a concrete mix includes a frame with a vibratible mold having a vertical through cavity with hollow cores extending downwardly in the mold cavity. A pallet receiver with a pallet thereon is movable upwardly to close the bottom of the... | 08/12/2003 |
| 5135375 | Apparatus for packing permanent magnet powder An apparatus for packing a permanent magnet powder wherein a solenoid coil is provided near the opening of a cylindrical molding space of a mold in such a manner that the direction of the central axis of the solenoid coil substantially coincides with the ... | 08/04/1992 |
| 4755338 | Method and slide-casting machine for the casting of hollow pre-cast units of concrete Method and slide-casting machine for the casting of hollow precast units of concrete by means of slide-casting. Concrete mix is extruded onto a base by using one or several shaping members that form a cavity and the mix is compacted by moving the shaping ... | 07/05/1988 |
| 4738608 | Unit for molding concrete mix A unit for moulding concrete mix, asphalt or other flowable material is disclosed which has a plurality of paddles mounted on a rotatable paddle wheel. The paddles compact and extrude the material into and through a mould box.... | 04/19/1988 |
| 4634365 | Apparatus for making pizza A system is provided for forming pizza dough and similar material into a pie shape by a series of progressively deeper tamping motions. Apparatus is provided for achieving such tamping, as are a conveyor to carry dough into registry with the tamping appar... | 01/06/1987 |
| 4342713 | Process and device for production of concrete pipe by filling and compaction of fresh concrete in an upright form A process and a device for producing concrete pipe by filling and compacting fresh concrete in an upright casting form. An outer jacket surrounding a vibrator-equipped core is rotated around its geometric axis with an internal peripheral speed which is gr... | 08/03/1982 |
| 4249358 | Process and installation for moulding paving stones or slabs Method and apparatus for forming and laying paving blocks in which interchangeable grids are provided of dissimilar configuration comprising a plurality of mould cavities each enclosing one or more fixed centers of the modules of the pattern, whatever is ... | 02/10/1981 |
| 4012185 | Confection making machine A machine for making a confection comprising a conveyor for moving containers through a plurality of stations, an ice depositing device at one of the stations for depositing ice fragments in the containers, a compactor at a second station for compacting t... | 03/15/1977 |
