Bizarre Patents
A new toilet tank assembly aquarium for housing aquatic creatures.
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 |
| 6109802 | Dot line printer for preventing the overheating of printing elements by selectively activating the printing elements In a dot line printer having a plurality of print hammers which are arranged to print a plurality of dot lines simultaneously when a hammer bank on which the print hammers are mounted performs one scan from one extreme to another, the dot lines originally... | 08/29/2000 |
| 5902056 | Dot-matrix line printer A dot-matrix line printer includes a printing shuttle which moves reciprocally to carry out a printing operation, and a balancing shuttle which moves in a direction opposite to the direction of the movement of the printing shuttle. The balancing shuttle i... | 05/11/1999 |
| 5826990 | Method and device for limiting a number of times each print hammer is driven during a predetermined period of time To prevent effective print speed from being lowered, a counter is provided for each of a plurality of print hammers. A number of times a print hammer is driven during one print phase having a predetermined period of time is counted by the counter. The cou... | 10/27/1998 |
| 5720561 | Printer coil temperature sensor and method A line printer having a hammerbank with hammers that are held by a permanent magnet and released by electrically driven coils. The temperature of the coils is determined by the relative resistance of the coils to provide an output equivalent to the temper... | 02/24/1998 |
| 5662421 | Print speed controlled dot line printer depending on print density To prevent undue elevation of temperature in a hammer assembly but to maintain the maximum printing speed, when a scheduled number of drivings at which print hammers are to be driven during one scan of a manner bank which follows the currently performing ... | 09/02/1997 |
| 5631676 | Parallel flow water cooling system for printbars A printbar cooling device for cooling an array of print dies substantially eliminates thermal gradients along the length of the array of print dies through use of a parallel flow cooling configuration where each point along the array is in thermal contact... | 05/20/1997 |
| 5595446 | Printer power supply A printer is disclosed of the dot matrix type having a series of hammers with pins that print upon an underlying media, and which are released from magnetic retention by reversing the polarity of a permanent magnet and having electro-mechanical drive circ... | 01/21/1997 |
| 5310271 | Solenoid actuator A print head has a solenoid driving means which employs a filler mixed with a lubricating oil to fix an exciting coil to the core. The filler prevents the layer winding from being shorted due to corrosion of the exciting coil and prevents mechanical abras... | 05/10/1994 |
| 5255988 | Printing head for use in wire impact dot printers having head cooling means A printing head for use in a wire impact dot printer comprising a cylindrical heat radiating member, core block and nose frame. The core block is inserted into the heat radiating member and hermetically joined thereto by a heat conductive resin material. ... | 10/26/1993 |
| 5152217 | Printer having improved hammerbank airflow An improved hammerbank in a dot matrix line printer has two different sets of staggered apertures therein along the length thereof for drawing pressurized air at the outside of the hammerbank therein to provide turbulent, high velocity cooling air in the ... | 10/06/1992 |
| 5137380 | Wire-dot print head A wire-dot print head has an armature having a tip to which a print wire is secured, a core provided in confrontation with the armature, a plate spring which is supported in a cantilever fashion and to which the armature is fixed, a permanent magnet assem... | 08/11/1992 |
| 5102245 | Print head A print head for a dot printer having a plurality of needles for printing by projecting the needles selectively from the print head. The print head has a solenoid base having a plurality of solenoids arranged in a circle thereon for driving the needles, a... | 04/07/1992 |
| 5096313 | Dot printer head A dot printer head including a housing that contains electromagnets toward its back end, the electromagnets having cores positioned opposite to armatures which are supported detachably against the core. The housing slidingly supports needles connected to ... | 03/17/1992 |
| 4968160 | Cooling device for printer head A cooling device for a printer head includes an evaporation unit, a condenser and a refrigeration medium supply pump interconnected by conduits or tubes. The heat generated from the printer head is taken up in the form of the heat of vaporization of a ref... | 11/06/1990 |
| 4778297 | Hammer coil cooling means in line printer A cooled print hammer assembly in which a plurality of hammer coils are formed in a resin member having a recess in which is placed a cooling fin. The opened faces of the fins are placed adjacent a plate of the frame of the print hammer assembly so that c... | 10/18/1988 |
| 4664542 | Temperature control device for a printing head A printing device operative to reduce a printing speed of a printing head to suppress a heat produced and to operate cooling means or allow the cooling ability to be higher when the printing head has a high temperature at which cooling is required, and op... | 05/12/1987 |
| 4602881 | Wire printing device with internal supports for thermal conduction A ballistic type wire printing head comprises a metal front support (11) for guiding the printing wires (23) and supporting a group of actuating electromagnetic units (37, 39, 41) associated with the wires. The armatures (41) of the electromagnetic units ... | 07/29/1986 |
| 4579469 | Cooling apparatus for dot matrix printing head A cooling apparatus for a dot matrix impact print head suitable for application in serial printers. The print head is mounted on a carriage sliding on guide bars for reciprocating movement thereon. A liquid filled container having an inlet and outlet is m... | 04/01/1986 |
| 4571101 | Print head A print head for impact type dot matrix printer having means for air-cooling the interior of the print head elevated in temperature due to the generation of heat of solenoid coils, the air cooling means is constituted in such a manner that the outer face ... | 02/18/1986 |
| 4438692 | Printing apparatus with cooling of hammer printing coils A printing apparatus including a plurality of drive coils for driving printing hammers arranged longitudinally in side-by-side relation at one side of a core of the U-shape. A first cooling fluid passageway is defined inside the core of the U-shape to all... | 03/27/1984 |
| 4407591 | Ballistic wire matrix print head A wire printing head of ballistic type comprises a front guide fixed to a carriage and in which the printing wires are mounted in an axially slidable manner. The electromagnets for actuating the wires have their respective cores mounted inside a tube of n... | 10/04/1983 |
| 4401392 | Dot matrix print head This invention involves methods and apparatus relating to the assembly and structure of a dot matrix print head. The invention includes a single unit, coil assembly of a bobbin, coil, and clapper which can be removeably placed as a unit among fixed pole p... | 08/30/1983 |
| 4235555 | Non impact dot matrix printer A non impact dot matrix printer of the serial-parallel or parallel type having a base member extending parallel to the line of print direction on which a plurality of adjacent printing heads is independently mounted; each head has a planar surface carryin... | 11/25/1980 |
| 4135830 | Wire printer printing head A wire printer printing head comprises a support member, a plurality of printing elements having a print wire with a flap-armature electromagnet and a sound absorbing cover. The printing element are radially and slidably mounted to the support member and ... | 01/23/1979 |
| 4033255 | Print hammer actuator for dot matrix printers An improved print hammer actuator for dot matrix printers employs a substantially closed loop magnetic path including a resilient magnetic hammer, a number of such hammers being aligned in a hammer bank assembly which is shuttled back and forth along a pr... | 07/05/1977 |
