U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Quotables

"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "

Mark Twain ; Christmas greetings, 1890

Newsletter  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.

 

Class 400/124.24 - Impact member guide


Subclass of Class 400 - Typewriting machines
Definition: Subject matter including significant structure of means
No. of patents: 54
Last issue date: 04/19/2011


1    
NumberTitleIssue Date
7927031Impact printhead
An impact printhead includes impact wires loosely held in a guide and driven to print. The printhead includes individual holes through which corresponding wires extend, and elongated holes formed in the guide for guiding the wires. The elongated hole includes a conc...
04/19/2011
7331726Armature, 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
7329059Wire 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
7152357Composite firearm barrel assemblies
A firearm barrel includes an elongate metal insert member and a rigid sleeve surrounding the insert member along a majority of the length of the insert member. A casing is formed around at least a portion of the sleeve, preferably by injection molding. Breech and mu...
12/26/2006
6776545Impact dot print head and a printer including the same
In the impact dot print head of the present invention there is used an armature spacer having side yoke portions which extend away from cores of a yoke and confront armatures. With such an armature spacer, when a magnetic circuit is formed by a magnetic flux generat...
08/17/2004
6695495Constant density printer system
An ink density closed loop control system for an ink ribbon of an impact printer having a reservoir roller formed of an ink absorbent material with at least one or more channels within the reservoir roller fluidly connected to a pump and ink supply. A tra...
02/24/2004
5674015Arrangement of actuators and tip ends in a wire dot print head
Plural guide holes are arranged in a matrix form in a wire guide. Plural print drivers are circularly arranged in plural layers for first print drivers belonging to a layer near to the wire guide and for second print drivers belonging to a layer far from ...
10/07/1997
5540508Print head for an impact dot printer
A print head for an impact dot printer capable of printing on a printing medium is provided. The print head includes a plurality of print wires and a front end guide having guide holes for guiding the print wires to predetermined print positions. The fron...
07/30/1996
5527118Wire dot print head and method for manufacturing same
An improved wire dot print head for increased integrated density is provided. The wire dot print head includes a frame. A plurality of drive coils are mounted within the frame. A lever for driving print wires has a print wire mounted at one end and its ot...
06/18/1996
5482387Dot print head and method of control over printing therewith
In a dot print head of an impact type moved in a direction of spacing movement relative to a printing medium, and having a plurality of printing elements each having a printing wire arranged substantially in an elongated circle centered at a line parallel...
01/09/1996
5449239Impact dot head with resiliently mounted wire guide
Disclosed is an impact dot head and an impact dot printer provided as not causing wire breakage by supporting a wire performing a printing operation so as to be resiliently oscillatable in a printing digit direction even if the impact dot head starts prin...
09/12/1995
5433538Wire guide in a wire dot print head
A wire dot print head having long thin print wires capable of axially advancing and withdrawing with respect to a print surface, and a wire driving device connected to the proximal end of each of the print wires so as to drive the print wire to advance an...
07/18/1995
5238313Dot matrix printer with improved wire guide
An impact dot head of a printer provided with a plurality of printing wires. The top end guide and/or the nose formed with protrusions at the sides thereof and with holes for slidably guiding the tips of the printing wires. The top end guide is inserted i...
08/24/1993
5127749Method of repairing printheads and product thereof
A method of repairing a spent printhead or printhead subassembly and a repaired printhead or printhead subassembly made in accordance with such method is disclosed. The method includes the steps of removing the print pins from the spent printhead or print...
07/07/1992
5083876Print wire alignment in a wire dot printer
A printing head for a wire dot printer includes a plurality of printing levers connected to a corresponding plurality of printing wires. A plurality of guide holes are operable for guiding the distal ends of the printing wires beyond a nose of the printin...
01/28/1992
5048985Wire guide device for wire dot printer
A wire dot printer using a plurality of print wires to print on a printing medium. The printer includes a print head unit, a guide member defining a wire nose mounted on one end of the print head unit, and a wire guide member mounted proximate one end of ...
09/17/1991
5011308Releasing type dot printer head
Supporting parts are disposed on both sides of the end parts of a plurality of armatures to which needles are fixed. Elastic members are held by elastic-member-holding parts with limited play in the longitudinal direction of the armatures. The elastic mem...
04/30/1991
4950092Wire dot print head with a pair of guide nose halves
In a wire dot print head having print wires extending through an opening of a guide nose, the guide nose comprises two halves. The print head may further comprise a wire guide which is fitted in the guide nose and through which the print wires extend, and...
08/21/1990
4915524Print wire guiding device for wire type dot printer
A wire guide member for use in a wire type dot printer for guiding print wires and having a guide member with grooves. The wire guide member includes a first plate formed of synthetic resin, a second plate being formed of a wear resistant material and a t...
04/10/1990
4909646Printer head in which a printing end can be readily machined without being obstructed by a protecting member therefor
In a printer head comprising a print element (12) and a protecting member (32) which is for protecting a printing end (24) of the print element, the protecting member is movable in a predetermined direction to place a free end (34) thereof at a first and ...
03/20/1990
4802781Dot matrix printer having increased impact force and higher operating frequency
The disclosure relates to a method of making a print head and the print head for a dot matrix printer, wherein there is provided a print wire actuator housing, a plurality of print wire actuators disposed in the housing, the actuators being arranged in th...
02/07/1989
4767226Print head with wires which continuously contact the tip guide
Disclosed is a print head for a printer which performs a printing operation with dots on a printing medium. The print head is provided with an armature and a wire holder fixed to the armature. A print wire is rigidly joined to the free end of the wire hol...
08/30/1988
4662764Ruby and needle guiding group for needle printing head
A needle end ruby of a needle printing head where the printing needle writing ends are arranged along one or more parallel columns is comprised of two or more plates juxtaposed on one or more planes. Each plate is rigidly fixed to the contiguous plate or ...
05/05/1987
4641981Dot matrix print head
A modified wire guide and assembly method for facilitating the insertion of wires into a dot matrix print head. In the preferred embodiment, the wire guide has a planar surface with downwardly extending wire holes defined by first and second surfaces. The...
02/10/1987
4637743Matrix printer and inker for indefinite length articles
A stationary dot matrix printer for printing both continuously variable and repetitive information on a moving substrate utilizing a readily replaceable ink applicator for applying ink to a blank foil adjacent to the printing station....
01/20/1987
4634302Actuator for dot matrix printhead
An improved dot matrix actuator is provided which includes a magnetic circuit formed of a yoke assembly and a pivotal armature. The armature is pivotally supported with respect to the yoke by means of a flexure assembly which eliminates the need for a tru...
01/06/1987
4610554Ink composition and wire dot printer including same
A wire dot printer that requires no cover over the wire portion of the printer head when not in service in order to prevent ink drying is constructed using an ink supply devoid of water. The ink composition used in such an ink wire dot printer contains a ...
09/09/1986
4567570Electronic control system for a linearly slanted print head
A logic network and method for processing columns of vertically oriented imaging data bits to produce control signals for operating a linearly slanted print head, includes writing different equal byte segments of each such column into a RAM memory while p...
01/28/1986
4552716Method for manufacturing a wire matrix print wire guiding device
An apparatus and method for manufacturing a wire matrix print head print wire guiding device which allows automatic insertion of manufacturing wires in a mold, which wires after molding define curved passageways in the molded print wire guiding device thr...
11/12/1985
4548521Dot matrix print head
A dot matrix print head has a unitary member in the manner of a ring with a plurality of integral projections formed to position the armatures of print wire actuators, and ring portions to space the forward and rearward assembly of parts of the print head...
10/22/1985
4547085Dot printer head
A dot printer head in which a plurality of needles are so arrayed that tips thereof are aligned linearly and are driven by electromagnets disposed in an annular arrangement. In this structure, the needles are guided by means of an intermediate guide plate...
10/15/1985
4501506Dot matrix print head
A wire matrix print head includes a generally circular portion for supporting a plurality of electromagnetic actuators and their associated armatures for driving print wires which are supported and guided in a nose portion of the housing a precise distanc...
02/26/1985
4447166Printing 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
4365902Wire matrix print head
A multiwired print head having an elongated conical center member with wire guiding sections formed thereon and with a plurality of recessed portions for minimizing the surface contact area between the print wire and the elongated member. In addition, the...
12/28/1982
4309116Print head assembly of wire dot matrix printer
A molded one-piece wire guide which aligns the free ends of a plurality of reciprocating print wires in a given vertical plane which extend from a set of solenoid assemblies disposed in the transverse array. The wire guide comprises first guides which con...
01/05/1982
4293232Bearing for the printing head of a matrix printer, and printing head comprising such a bearing
A bearing for a printing head of a matrix printer whose slidable printing pins are guided in guide channels which are provided in a portion of the bearing which is made of a comparatively soft material. The bearing is provided with pin-shaped inserts whic...
10/06/1981
4240756Optimized wire matrix impact print head
An improved wire matrix impact print head comprising a plurality of variable length impact print wires or styli, each having an input end for receiving a propelling force and an output end for delivering an impact to a recording medium. The wire styli are...
12/23/1980
4226544Wire printing heads
A wire printing head is disclosed in which solenoids are arranged in arcuate configuration, the printing wires being connected in line with their respective solenoids. A wire guide is positioned adjacent the printing line and preformed tubes are used to g...
10/07/1980
4211494Device for guiding the printer needles in a mosaic needle printer
A guide assembly for guiding the printing needles of a mosaic printing head utilizing sets of opposed interlocked multi-channelled guide plates forming sets with needle tracks formed in opposed faces of the guide plates, the guide sets extending from need...
07/08/1980
4185929Wire matrix print head assembly
A wire matrix print head assembly having bearing and guide apparatus for a plurality of circumferentially spaced reciprocable wire members comprising one or more elongated bearing members each having a plurality of elongated passages, there being one pass...
01/29/1980
1    
 
Sign InRegister
Username  
Password   
forgot password?