Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 7354211 | Perforation forming mechanism for use in an imaging apparatus An apparatus for perforating a sheet of print media having a front side and a back side includes a printhead carriage for carrying a printhead. A perforator carriage carries a perforation forming mechanism. An isolation damper having elastic, vibration absorbing, ch... | 04/08/2008 |
| 7355306 | Motor driven blower support system A drive motor is supported and fixed onto a motor support plate composing a support member through vibration proof rubber which damps vibration, the frequency of which is not less than 1 kHz. Due to the foregoing, it becomes difficult for the vibration generated fro... | 04/08/2008 |
| 7331726 | Armature, wire dot printer head and wire dot printer In order to obtain joining force endurable for high-speed printing and realize an enhancement in magnetic characteristic, a plate-like arm for supporting a printing wire is laminated with a magnetic circuit forming member that is composed by laminating plural plates... | 02/19/2008 |
| 7329059 | Wire dot printer head and wire dot printer A wire dot printer head of the present invention has an armature that has an arm supporting a printing wire and pivotably provided at the position opposite to the core, and a coil spring that one end comes in contact with the arm for urging the armature in the direc... | 02/12/2008 |
| 7048455 | Wire dot printer head with abrasion having magnetic permeability and hardness surface In order to realize a stable rocking operation of the armature for performing high-speed printing, between the armature spacer for accommodating and holding the support shaft of the armature which supports the printing wires, and the yoke for holding the support sha... | 05/23/2006 |
| 6789964 | Wire dot printer head In a wire dot printer of the present invention, an armature stopper against which an armature rocking from a printing position to a standby position collides is provided, and the armature stopper is formed by integrating an elastic plate and a hard plate with each o... | 09/14/2004 |
| 6729782 | Wire dot printer head In the wire dot printer head of the present invention, there is provided an armature stopper against which an armature having pivoted from a printing position to a stand-by position comes into abutment, the armature stopper being formed by bonding an elastic plate a... | 05/04/2004 |
| 5524991 | Printing head having a armature backstop A printing head comprising a plurality of armatures which are arranged radially and which are swingable before and behind, an armature stopper having armature abutting portions of cantilever type provided in projection toward a center in a radial directio... | 06/11/1996 |
| 5435656 | Back stop structure for matrix pin print head A matrix pin print head is set to a fixed distance (17) relative to a print counter support (2), where a recording substrate (3) rests on the print counter support (2). An ink ribbon (4) is guided in front of the print pins (5) between the matrix pin prin... | 07/25/1995 |
| 5385415 | Dot matrix printing head with variable armature abutments A dot matrix printing head and related printing apparatus, the print head comprising a plurality of printing electromagnets, each having a magnetic core, an energization winding, a movable armature for actuation of a printing element and a first abutment ... | 01/31/1995 |
| 5375935 | Printing head having backstop structure A printing head comprising a plurality of armatures which are arranged radially and which are swingable before and behind, an armature stopper having armature abutting portions of cantilever type provided in projection toward a center in a radial directio... | 12/27/1994 |
| 5322379 | Impact dot print head and printer including same A printer including an impact dot print head for driving a plurality of print wires mounted on the cantilevered end of print levers is provided. The print head includes a stopper positioned to be impacted by a print lever returning from a print position t... | 06/21/1994 |
| 5188466 | Matrix pin print head with rebound control The invention relates to a matrix print head (1) which is set at a fixed distance to a substrate support (2), where a recording substrate (3) is supported on the substrate support (2). An ink ribbon (4) is led between print pins (5) of a matrix pin print ... | 02/23/1993 |
| 5163761 | Dot print head A dot print head includes an armature assembly constructed by providing an armature guide holding a plurality of armatures for swing motion in a cup-shaped housing having one open end, slidably guiding a plurality of print wires attached to the inner ends... | 11/17/1992 |
| 5149213 | Noise reducing back stopper for an impact print head A print head for a dot printer of the present invention includes a plurality of armatures which support a print wire on one end. A back stopper is provided on the rear side of the armatures to stop the armature as the print wire retreats after a print str... | 09/22/1992 |
| 5013169 | Print head having reduced noise and vibration characteristics An improved print head for a dot matrix printer is provided. The printing is performed by wires projecting from said print head. The movement of the wires is controlled by the movement of armatures which contact an armature base. The construction of the b... | 05/07/1991 |
| 5009528 | Dot print head A dot print head comprising a yoke, a plurality of cores formed integrally with the yoke in an annular arrangement in the peripheral portion of the yoke, solenoid coils wound respectively around the cores, armatures fixedly provided respectively with styl... | 04/23/1991 |
| 4995742 | Needle printing head Needle printing head of the permanent magnet type where the armatures of a plurality of printing actuators are attracted, in rest position, against the poles of a permanent magnet and released in printing position by the "cancellation" of the magnetic flu... | 02/26/1991 |
| 4886381 | Dot matrix print head assembly A dot matrix print head assembly comprising a plurality of print wire members mounted in a wire guide housing and being operably associated with rigid armature members and electromagnet units in an electromagnetic drive housing with a transverse pivotal e... | 12/12/1989 |
| 4832515 | Printing head for a wire dot-matrix printer A printing head includes a core section and a housing section coupled thereto. The core section has a core having a plurality of pole portions around which coils are wound. The core is arranged in the case and coupled therewith by means of an insulating r... | 05/23/1989 |
| 4822187 | Preventing armature rebounding in matrix print heads Rebounding of armatures driving print needles in a matrix print head, the armatures being arranged in a star pattern, is prevented by having them abutting against a ring, preferably of fluoro rubber having hardness from 60 to 90 shore A and being bonded t... | 04/18/1989 |
| 4793252 | Matrix line printer A carrier frame is provided for oscillation along a printing platen of the printer and is comprised of two integral, U-shaped sections facing each other at right angles. A plurality of electromagnetic actuators are arranged in one section and include a yo... | 12/27/1988 |
| 4757760 | Wire mask for a dot printer head apparatus A printing head apparatus for a dot printer including a frame and at least one printing wire unit which is secured to the frame. The printing wire unit has an electromagnetic actuator and a printing spring with one stationary end and a printing wire attac... | 07/19/1988 |
| 4749976 | Solenoid A solenoid-type magnet drive, including a coil surrounding in parts an axially movable armature, and a housing for mounting the coil, further includes an attenuating device which comprises an attenuating disk positioned abutting centrally one end of the a... | 06/07/1988 |
| 4728205 | Positioning of dampeners in a wire matrix print head An impact type dot head for forming a character, symbol or the like by a dot matrix comprises: four printing wires arranged in a line in a wire holder; a guide member to guide the wires in parallel; four drive units each for pushing the rear edge of the w... | 03/01/1988 |
| 4697939 | Wire dot printer with improved wire dot head A wire dot printer has a wire dot head comprising a plurality of electromagnets for attracting each armature to thereby project each wire to a printing position, a first cover provided with a guide for guiding the wires to the printing position, holding m... | 10/06/1987 |
| 4653943 | Print head Disclosed is a print head of a dot matrix printer in which an electromagnet assembly and a print wire assembly are mounted by means of a mounting assembly. The print wire assembly includes armature members radially arranged in a support base member which ... | 03/31/1987 |
| 4643598 | Print head for wire matrix printer A wire matrix print head has a plurality of print wires each operatively connected to an armature and a core with a predetermined space formed between said armature and said core. The print ends of all wires are simultaneously aligned with the open end of... | 02/17/1987 |
| 4632580 | Dot matrix print head dampening mechanism A mechanical damper system for use in a multiple wire, dot matrix print head to dampen the motion of each print wire actuator when such actuator returns from the printing position to the non-printing or home position. A single injection-molded plastic pie... | 12/30/1986 |
| 4613242 | Dot matrix print head A dot matrix print head utilizing a print pin carrying spring beam mounted as a cantilever with an armature mounted thereon over a solenoid housing with a spring member overlying a portion of the beam to resist motion of the beam past its rest position on... | 09/23/1986 |
| 4613243 | Wire matrix printer with damping means Electromagnetic printing group for a dot matrix printer where the armature movement towards the rest position isdamped by a counterarmature interposed between the armature and a resilient element defining the rest position so that the air cushion interpos... | 09/23/1986 |
| 4600321 | Matrix print head A high speed matrix print head assembly is provided for precisely locating the multiple armatures between the magnetic yoke and print pin of the assembly. An armature guide and supporting spring member is provided having guide slots therein which cooperat... | 07/15/1986 |
| 4582437 | Print pin actuator and method of making same The high speed print pin actuator disclosed herein is constructed as two sub-assemblies, a U-shaped fixed magnet structure and an armature sub-assembly. One leg of the U-shaped structure constitutes a coil core and the other includes a permanent magnet an... | 04/15/1986 |
| 4552064 | Dot matrix printers and print heads therefor Several new print heads are disclosed for use in serial and line printers. The print head is of the solenoid operated type without stored energy magnets and has a very low mass armature beam which the solenoid specifications are matched for performance at... | 11/12/1985 |
| 4513496 | Method of making a print pin actuator The high speed print pin actuator disclosed herein is constructed as two sub-assemblies, a U-shaped fixed magnet structure and an armature sub-assembly. One leg of the U-shaped structure constitutes a coil core and the other includes a permanent magnet an... | 04/30/1985 |
| 4472071 | Apparatus for adjusting the distance between the print head and platen 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... | 09/18/1984 |
| 4447166 | Printing head of dot printer In printing head of a dot printer according to this invention, a groove having width a little greater than diameter of top end of a needle is formed in front of a needle guide to guide the needle, position of top end of the needle is specified between the... | 05/08/1984 |
| 4396304 | Print head and drive circuit Wire printing apparatus includes a print head having at least one print wire and associated actuating mechanism and drive circuit. In the drive circuit a capacitor is charged to a predetermined voltage through an inductance and then discharged through the... | 08/02/1983 |
| 4382701 | Wire matrix printing apparatus A wire matrix printing head moveable along a printing line on a record medium is described in which a ring of wire-selection electromagnets are grouped about the wire guiding arrangement, the electromagnets each having a basic yoke assembly with a pair of... | 05/10/1983 |
| 4367962 | Mosaic printing head A mosaic printing head for use in a computer printer includes a needle guiding assembly and an electromagnet assembly for activating the needles. The printer head utilizes a unique design to provide for simple and fast adjustment of the position of each p... | 01/11/1983 |
