US3191527A - Fluid pressure wave printer - Google Patents

Fluid pressure wave printer Download PDF

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Publication number
US3191527A
US3191527A US131808A US13180861A US3191527A US 3191527 A US3191527 A US 3191527A US 131808 A US131808 A US 131808A US 13180861 A US13180861 A US 13180861A US 3191527 A US3191527 A US 3191527A
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United States
Prior art keywords
region
fluid
wave
receiving member
sources
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Expired - Lifetime
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US131808A
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English (en)
Inventor
Wadey Walter Geoffrey
Eugene M Polter
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Sperry Corp
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Sperry Rand Corp
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Publication date
Priority to BE620953D priority Critical patent/BE620953A/xx
Priority to NL282157D priority patent/NL282157A/xx
Application filed by Sperry Rand Corp filed Critical Sperry Rand Corp
Priority to US131808A priority patent/US3191527A/en
Priority to FR905868A priority patent/FR1336891A/fr
Priority to DES80761A priority patent/DE1233637B/de
Priority to GB30359/62A priority patent/GB955225A/en
Priority to CH962162A priority patent/CH404983A/de
Application granted granted Critical
Publication of US3191527A publication Critical patent/US3191527A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J9/00—Hammer-impression mechanisms
    • B41J9/26—Means for operating hammers to effect impression
    • B41J9/34—Fluid-pressure means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J23/00—Power drives for actions or mechanisms
    • B41J23/20—Fluid-pressure power drives
    • B41J23/24—Fluid-pressure power drives for impression mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J9/00—Hammer-impression mechanisms
    • B41J9/16—Means for cocking or resetting hammers
    • B41J9/22—Fluid-pressure means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
    • F15C1/00—Circuit elements having no moving parts
    • F15C1/001—Circuit elements having no moving parts for punched-card machines ; for typewriters ; for keyboards; for conveying cards or tape; for conveying through tubes ; for computers ; for dc-ac transducers for information processing ; for signal transmission

Definitions

  • This invention relates to means for developing a concentrated wave of uid energy for applying a force to a pressure responsive means, and more particularly, to means in a printer apparatus for forcing a print receiving member 'against a type face which does not involve the use of a mechanical print hammer.
  • the print receiving member such as a card or paper sheet
  • the print receiving member is commonly forced against the type face by means of a mechanical prin-t hammer arrangement, wherein momentum is imparted to the print hammer head such that upon its striking the print receiving member, said member is pressed against the type face.
  • an ink bearing member is interposed between the type face andthe prin-t receiving member, while in other apparatus the ink is spread upon the type face and transferred therefrom onto the print receiving member during the time of contact.
  • the present invention eliminates the need for the above described mechanical mechanism. Instead, a controlled force is applied against the print receiving member or the like by means of a converging composite iluid pressure wave front developed within a body of fluid by .a plurality of fluid pulses applied thereto at certain discrete times. By merely changing these pulse times, the point of application and direction of said force may be varied.
  • the invention is especially useful in the output of data processing systems which employ fluid amplifiers. These systems generally manipulate and transmit data by means of fluid, rather than electrical, pulses. Control signals are also developed in the same fluid medium, and may be utilized as the actuating .pulses for the present invention. Fluid amplifiers are mechanically rugged, adaptable to miniaturization, and operable at medium repetition rates.
  • Another object of the present invention is to provide means for forcing a print receiving member against a type face wherein a composite fluid pressure wave is generated within a body of uid such that the maximum concentration of energy in said composite wave impinges against a print receiving member.
  • a correlative feature of this invention is the kind of print or type face that may be used wit-h the printer mechanism.
  • printing is ⁇ accomplished by striking the print receiving member with a mechanical hammer and forcing same into the raised type of a type wheel in paper is pressed against a surface into which the type face is engraved and into which printing ink is wiped.
  • the type is incise-d in shallow relief with relatively incompressible ink lling all of the recesses. Under these circumstances, no appreciable embossing will occur.
  • the force producing means of the present invention may also find use in applications other than printing wherever a controlled force is desired. By varying the number and/or timing of fluid pulses used in developing the composite pressure wave, varying forces may be generated at different locations within the body of fluid which impinge upon pressure responsive means there found.
  • the invention is not to be limited to printing appliorder to receive the character impression. This is comi cations. l
  • a yet further object of the present invention is to provide apparatus for generating a controlled force which avoids the use of mechanical linkage mechanism and a moving hammer head.
  • a yet further object of the present invention is to provide means for producing a force in the form of a composite iiuidl pressure wave which is developed by a plurality of individual pressure waves acting to reinforce one another at the desired point of application.
  • FIGURES 1a and 1b respectively show the plan and side elevation views of one embodiment of the invention
  • FIGURES 2a and 2b respectively show the plan and side elevation views of another embodiment of the present invention.
  • FIGURES 3a and 3b show different cross sectional views of the force producing means of FIGURE 1;
  • FIGURES 4a and 4b show a variation of FIGURE 3a
  • FIGURE 5 shows another embodiment of the invention
  • FIGURES 6 and 7 illustrate how different composite pressure waves may be generated by the apparatus of FIGURE 3.
  • FIGURES 8 and 9 illustrate how different composite pressure waves are generated by the apparatus shown in FIGURE 4.
  • FIGURES 1a and 1b respectively show the plan and side elevation views of one embodiment of the present invention as used in a printer mechanism.
  • a housing 10 has contained therein a plurality of chambers 181 through 1S which are coplanarly arranged and whose number corresponds to the number of columns to be printed on a print receiving member 12.
  • each of these chambers 18u opens from housing 10 on the side thereof which is adjacent the print receiving member 12, and each has a shape in its vertical dimension which may be approximately parabolic.
  • the width of a chamber may be quite narrow in order to allow more of them to be placed side by side for a given width of member 12.
  • a series of fluid orifices 24 are positioned about the surface of a chamber 18 in a vertical plane, with each orifice connecting with the environment outside of housing 10 by means of a fluid conduit 26.
  • Each conduit 26 associated with a particular chamber 1Sn is connected to an individual conduit 2i)n which emanates from a control unit 22..
  • the lengths of iiuid conduits 26 associated with a chamber may vary as shown in FIGURE 1b, or they may all be equal depending upon various considerations which will subsequently be discussed.
  • each font 2? may be located on an individual print wheel, or they may all be located on a single print drum 1li such as is ⁇ shown in FIGURE la. As the drum 1d rotates on its spindle 16, each type character of a font is brought adjacent the surface of the print receiving member. If it is desired to print a particular character in a column n on the print receiving member, it is necessary to rst wait until that character is moved adjacent the print receiving member 12.
  • a pulse is applied via the respective conduit 26 from control unit 22 which divides at junction 30u and is applied via all of the conduits 26 to the fluid orifices in the selected chamber itin.
  • the emergence of fluid pulses from the orifices 2d within the selected chamber 18 causes the development of a corn- ,posite uid pressure wave which converges and has its ⁇ point of a maximum energy in a region next to the print receiving member 12 which is thereby forced against the type character face.
  • the iiuid contained within a chamber 18 must be one in which a pressure wave can be developed.
  • FIGURES 2a and 2b respectively illustrate plan and side elevation views of a second embodiment of the present invention wherein the fluid orifices in a chamber 32 are arranged in a three dimensional relationship with respect to each other.
  • Like parts in FIGURE 2 and FIGURE 1 are correspondingly numbered.
  • the advantage of utilizing three dimensionally disposed orifices within each chamber lies in that a greater number of ori- .ces may be included so as to generate a larger force upon the print receiving member 12. However, this advantage is somewhat offset inasmuch as a chamber occupies a greater volume than does a chamber in FIG ⁇ URE 1. Therefore, in a printing application, the use of three dimensional chambers requires that the type fonts be spaced further apart from each other on the type drum 14.
  • a correlative feature of the present invention is the nature of the type face that may be used when the invention is employed in a .printer mechanism.
  • the type face is inci'sed or engraved ,in shallow relief within the type wheel or drum, with relatively incompressible printing ink being introduced thereto which iills all of the recesses. This is commonly known as intaglio printing.
  • any readily adaptable well-known method of introducing the ink and wiping the type Wheel surface may be employed in the present application.
  • raised type is most often used with the printers of the class described, with the consequent and sometimes undesirable embossing of the print receiving member. Since no appreciable embossing occurs with intaglio printing, it is seen that the use of the present invention as the impact force producing medium in printer mechanism leads to novel and unexpected results. It should, however, be noted in passing that raised type may also be employed with the present invention if embossing is acceptable.
  • FIGURES 3a and 3b respectively illustrate a cross ysectional pictorial view and a cross sectional elevation view of one of the parabolic chambers 18 of FIGURE 1.
  • Fluid orifices 241 through 244 and 246 through 249 are symmetrically disposed about the axis of chamber 18, with all of these orifices lying in the Same vertical plane, i.e., the plane of the parabola.
  • Fluid conduits 261 through 269 are respectively associated with each of the orifices 241 through 2da. Although the conduits are shown in FIGURE 3 to be normal to the surface of the chamber Yas they enter, this is not absolutely necessary in view of the description to follow.
  • each of the conduits 26 contains the same fluid as that in chamber 18, such that a pressure pulse applied at the input thereto travels through a conduit 26n and emerges at its respective orifice 24h. Upon emerging into chamber 1S, the pulse continues its travel through the fluid body until it eventually reaches region 45 therein.
  • each of the fluid orifices in the wall of chamber 13 may be considered as a source of disturbance within the body of fluid for generating an individual pressure wave therefrom having a direction ofV propagation towards region 45.
  • a pressure wave thus created by a source of disturbance 2d transmits energy alongl its direction of propagation.
  • the wave produced by the sources 24 are longitudinal in that the compression and rarefaction takes place in a direction parallel to the direction of travel.
  • the energy density of longitudinal pressure wave is generally proportional to the square of the maximum wave amplitude, and varies inversely as the square of the distance from the wave source.
  • each wave produces the same disturbance of the medium as though it were alone.
  • the combined action of all of the waves at any particular location within the body may then be determined by summing together all of the instantaneous wave amplitudes, with each having either a positive or negative sign. This phenomenon is known as interference.
  • the energy content of the composite wave is greater than the energy content of either of its component waves.
  • a pulse is applied to chamber 18 via conduit 265 and orifice 245 such that a single pressure wave is produced in the fluid body which begins to travel toward the desired region 45.
  • the pressure wave generated by this E" J source normally has a spherical wave front so that energy is propagated in more than just one direction.
  • This wave front may be denoted as 4051 and it represents the particles of the fluid body which are momentarily at their greatest distances in a positive direction from their undisturbed positions.
  • the wave front 405 represents the points of greatest positive amplitude (maximum compression or pressure) of the pressure wave generated by source 245 at any particular time.
  • fluid pressure pulses are applied simultaneously to sources 24.1 and 246 which thereby produce individual pressure waves having a direction of propagation toward region 45.
  • These individual pressure waves have wave Ifronts 404 and 406 which respectively represent the location of their greatest positive wave amplitudes at different times during the course of their travel through the fluid body.
  • the velocity of a pressure wave in chamber 18 is the same no matter Where or what its source of origin. Therefore, when once produced, each pressure wave travelsV the sarne distance within the fluid body dur- ⁇ ing a unit time interval as that traveled by any other.
  • tiuidpressure pulses are applied to actuate sources 243 and 241 and in turn respectively generate pressure waves 403 and 407 each having at least a portion of their wavefronts travellingtoward the desired location 45.
  • sources 242 and 248 are simultaneously energized to respectively generate pressure waves 402 and 408.
  • Sources 241 and 249 are thereafter simultaneously actuated to generate pressure Waves 401 and 409, respectively.
  • a pressure responsive means positioned adjacent region 45.
  • Such a pressure responsive means may be the print receiving member 12 shown in FIGURE 1, or it may be other means responsive in some manner -by the application of force thereupon.
  • the sources of disturbance 241 through 249 are selectively actuated at times which are inversely proportional to the distance of a source from desired region 45 of maximum energy concentration.
  • FIGURE 7 wherein it is desired, by using the same number of trains and the same chamber 18, to develop a composite wave having its maximum concentration of energy at a region 46 not found on the axis of symmetry.
  • region 46 in the uid body is approximately the same distance Ifrom sources 241 through 244.
  • the distances from sources 245 through 249 become progressively shorter.
  • sources 241 through 24.1 must be actuated approximately simultaneously, but before actuation of the remaining sources, in order to generate fluid pressure waves 401 through 40,1 which will arrive at region 46 at the same time that the remaining pressure waves 405 through 409 ralso arrive.
  • sources 245 through 249 are actuated in this sequence such that a converging wave front 42 is created which eventually reaches region 46.
  • all of the pressure waves substantially reinforce one another to generate a point of maximum concentration of energy within the fluid body.
  • one important feature of the present invention is to provide a region of maximum iiuid energy at anyy desired location in the chamber in accordance with the times at which iiuid pulses are applied via the orifice-s in the sur-face of the chamber. ⁇ The 'desired region of maximum energy concentration may be changed merely by adjusting these times, without need for changing the number or placement of orifices.l
  • the wave front of an individual pressure wave from a source 24 is spherical in shape, it is not necessary that the axis of an igniter be parallel to the direction in which the desired region 45 or 46 is found from the source. In other words, ⁇ by virtue of the expanding wave front of an individual pressure wave, a portion thereof propagates towards and eventually reaches region 46 even though said region'is not on the axis of the orifice yfrom which the wave originated.
  • FIGURE 6 and FIGURE 7 both show all of the pressure waves intersecting at a point within regions 45 or 46, it is to be understood that the desired region can have nite volume, with the waves only substantially reinforcing one another therein.
  • the maximum amplitudes of the waves as represented by the indicated Wave fronts need not arrive simultaneously at the very same point, but can arrive in the general locality of a point. In this way, positive portions of the waves, although they may vary in amplitude, will still -be summed together to result in a composite wave having maximum energy concentration within the desired region of the fluid body.
  • the time at which a ui-d pulse arrives at an orifice 24 via its conduit 26 may be adjusted by merely varying the length ⁇ of said conduit between its orifice and junction 30 shown in FIGURE 1b.
  • a single pulse is applied to junction 30 via conduit 20,n from the control source 22 for the particular chamber -18 in which a composite wave is desired to be generated.
  • the pulse ⁇ from source 22 arrives at junction 30, it generates a fluid pulse in each of the conduits 261 through 269 with each of these fluid pulses leaving junction 30 at the same time.
  • the time required for a pulse to travel from junction 30 to a particular orifice 24 depends upon the length of its associated conduit 26n together with whatever common path 31 is required before the fluid pulse actually enters conduit 26.
  • a fluid pulse arriving at junction 30 from source 22 will essentially create a pulse in each of the two branches 31.
  • the fluid pulse in lthe upper branch 31 successively creates fluid pulses in conduits 26.1, 263, 262, and 261.
  • the fluid pul-se in the lower branch 31 successively pro prises pulses in conduits 266, 261, 269, 269.
  • the pulse at junction 30 immediately produces a pulse in conduit 265. Therefore, a pulse emerges from orifice 245 prior to the emergence of pulses from orifice 243 and 245.
  • FIGS 4a and 4b show cross sectional pictorial and elevation view-s, respectively, of a two dimensional charnberhaving a semi-circular shape rather than parabolic.
  • FIGURES 8 and 9 illustrate the generation of a composite converging fluid pressure wave within the chamber of FIGURE 4, where the concentration of energy is to InA occur at a region in the fluid body which is on or away from the chamber axis of symmetry, respectively.
  • the desired region 48 is directly at the center of the circle such that all of the sources 24 are equi-distant therefrom. Therefore, each of the sources 24 should be actuated at the same time, since all the pressure waves need to travel the same distance.
  • the desired region 49 is located away from the center of the circle such that all of the sources 24 are at different distances therefrom. In such a case, no two sources in FIGURE 9 emit a pulse at the same time.
  • this statement may be modified in view of the preceding discussion wherein it was mentioned that it is not necessary that all of the individual pressure'wave fronts intersect at the exact same point within the desired region, Generally, the fronts from sources 241 through 244 could intersect in the upper part of region 49, while the fronts from the remaining sources could intersect in the lower part. Even in this case, however, the waves will substantially reinforce one another such that a crest of maximum energy is concentrated in region 49.
  • the chambers 18 may be three dimensional in that orifices are located therein which ldo not all lie in the same ver-tical plane.
  • FIGURE ⁇ 5 shows a cross sectional pictorial view of a chamber which is a lparabola in the plane of its axis of symmetry, and a circle in the plane normal thereto.
  • orifices 24 are symmetrically disposed about the axis of symmetry, but do not all lie in the vertical plane of the cross section.
  • FIGURE 5 is similar to the two dimensional chambers disclosed in FIGURE 3 and FIGURE 4.
  • Each orifice acts as a source of disturbance in the fluid body within chamber 32 such that an individual pressure wave is generated therefrom a portion of whose wave front has a direction towards ⁇ some predetermined desired region.
  • These lpressure waves arrive in the desired region and substantially reinforce one another to produce maximum energy concentration which can do work upon a pressure responsive means adjacent thereto.
  • a larger number of pressure waves can be generated which increases the energy concentration at the desired location.
  • a three dimensional chamber provides more surface area in which to place orifices lsuch that the composite pressure wave is thereby comprised of a' greater number of individual pressure waves.
  • the invention is not to be limited to source actuation means employing the use of fluid pulses in conduits 26.
  • the voices 24 need not be symmetrically arranged about the axis of symmetry of the chamber. This is obvious from an examination of yFIGURE 9, for example, wherein all of the sources 24 are at different distances from the desired region 49. Therefore, the symmetrical shape of chamber 1S in this instance has no particular significance. The same may be true for a three dimensional chamber. Of course, where the sources are not symmetrical about some axis or on which the desired location is placed, it becomes necessary to adjust appropriately the timing of Ithe pulses emitted from each of lthe orifices such that all arrive at the desired region at approximately the same time to result in reinforcement therein.
  • air may be used as the fluid within chamber 1S, conduits 26, and
  • chamber 18 is open to the out- -side environment and the print receiving member 1,2 need not make an air tight seal therewith.
  • the composite pressure wave must have sufficient energy to move member 12 outwardly from chamber 18 against the existing environmental pres-sure.
  • fluid other than air can be employed if it is contained incharnber 1S by means of a flexible sealing diaphragm member across the opening which ⁇ stretches to force the print receiving member against the type face.
  • Other arrangements may also be constructed, such as immersing the print receiving member y12 and type drum 14 in the body of fluid. Therefore, many modifications ⁇ of the invention may be apparent to one skilled in the art without departing from the spirit of the invention a-s defined in the appended claims.
  • Printer mechanism comprising: a type face engraved into a surface, and apparatus for forcing a print receiving member against said type face, with said apparatus including a body of fluid a region of whichis adjacent to a print receiving member, a finite plurality of actuable discrete sources of disturbance arranged symmetrically about an axis in said fluid body, where said axis extends to said region with each said source producing, when actuated, an individual longitudinal pressure wave which travels through said fluid body toward said region, and means to actuate initially thesaid source farthest from said region and thereafter to actuate each of the remaining sources at a time, as measured from said initial actuation time, which is approximately inversely proportional to its distance from said region, such that all of said individual pressure waves susbtantially reinforce one another in said region to develop a concentration of fluid energy therein.
  • each said source comprises an orifice through which a fluid pressure pulse can be introduced into said body of fluid by said actuating means.
  • Printer mechanism which further includes a fluid imperviousrchamber surrounding said body 0f fluid except adjacent a print receiving member such that said region in said fluid body is in direct contact with a print receiving member.
  • Printer mechanism comprising: a type face, and apparatus for forcing a print receiving member against said type face, with said apparatus including a body of fluid a region of which is adjacent to a print receiving member, a nite plurality of actuable discrete sources of disturbance arranged symmetrically and parabolically about an axis in said fluid body, where ⁇ Said axis extends to said region, with each said source producing, when actuated, an individual longitudinal pressure wave which travels through said fluid body towards said region, and means to actuate each of said sources of disturbance at an appropriate time such that all of said individual pressure waves substantially reinforce one another in said region to develop a concentration of uid energy therein.
  • Printer mechanism comprising: a type face, and apparatus for forcing a print receiving member against said type face, with said apparatus including a body of uid a region of which is adjacent to a print receiving member, a finite plurality of actuable discrete sources of disturbance arranged symmetrically and circularly about an axis in said fluid body, where said axis extends to said region, with each said source producing, when actuated, an individual longitudinal pressure wave which travels through said uid body towards said region, and means to actuate each of said sources of disturbance at an appropriate time such that all of said individual pressure waves substantially reinforce one another in said region to develop a concentration of fluid energy therein.
  • Printer mechanism comprising: a type face, and apparatus for forcing a print receiving member against said type face, with said apparatus including a body of fluid a region of which is adjacent to a print receiving member, a finite plurality of actuable discrete sources of disturbance each located at a different position in said fluid body and producing, when actuated an individual longitudinal pressure wave which travels through said fluid body towards said region, and means to actuate each of said sources of disturbance at an appropriate time such that all of said individual pressure waves substantially reinforce one another in said region to develop a concentration of iiuid energy therein, wherein said source actuating means comprises means to actuate initially the source farthest from said region, and thereafter to actuate each of the remaining sources at a time, as measured from said initial actuation time, which is approximately inversely proportional to its distance from said region, and each said source of disturbance comprises an orifice through which a fluid pressure pulse can be introduced into said body of uid by said actuating means.
  • Printer mechanism comprising: a type face, and apparatus for forcing a print receiving member against said type face, with said apparatus including a body of uid a region of which is adjacent to a print receiving member, a finite plurality of actuable discrete sources of disturbance each located at a different position in said iiuid body and producing, when actuated an individual longitudinal pressure wave which travels through said iiuid body towards said region, and means to actuate each of said sources of disturbance at an appropriate time such that all of said individual pressure waves substantially reinforce one another in said region to develop a concentration of fluid energy therein, wherein each said source of disturbance comprises an orifice through which a iiuid pressure pulse can be introduced into said body of fluid by said actuating means.
  • Printer mechanism comprising: a type face, and apparatus for forcing a print receiving member against said type face, with said apparatus including a body of uid a region of which is adjacent to a print receiving member, a finite plurality of actuable discrete sources of disturbance arranged symmetrically about an axis in said fluid body, where said axis extends to said region, with each said source producing, when actuated, an individual longitudinal pressure wave which travels through said fiuid body towards said region, and means to actuate each of said sources of disturbance at an appropriate time such that all of said individual pressure waves substantially reinforce one another in said region to develop a concentration of fluid energy therein, wherein each said source of disturbance comprises an orifice through which a fluid pressure pulse can be introduced into said body of uid by said actuating means.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Surgical Instruments (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
US131808A 1961-08-16 1961-08-16 Fluid pressure wave printer Expired - Lifetime US3191527A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BE620953D BE620953A (ja) 1961-08-16
NL282157D NL282157A (ja) 1961-08-16
US131808A US3191527A (en) 1961-08-16 1961-08-16 Fluid pressure wave printer
FR905868A FR1336891A (fr) 1961-08-16 1962-08-02 Dispositif imprimeur par onde de pression de fluide
DES80761A DE1233637B (de) 1961-08-16 1962-08-04 Pneumatische Druckvorrichtung
GB30359/62A GB955225A (en) 1961-08-16 1962-08-08 Printing mechanism
CH962162A CH404983A (de) 1961-08-16 1962-08-10 Pneumatische Vorrichtung zum Bedrucken von Aufzeichnungsträgern

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US131808A US3191527A (en) 1961-08-16 1961-08-16 Fluid pressure wave printer

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US3191527A true US3191527A (en) 1965-06-29

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US131808A Expired - Lifetime US3191527A (en) 1961-08-16 1961-08-16 Fluid pressure wave printer

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US (1) US3191527A (ja)
BE (1) BE620953A (ja)
CH (1) CH404983A (ja)
DE (1) DE1233637B (ja)
GB (1) GB955225A (ja)
NL (1) NL282157A (ja)

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US2684231A (en) * 1952-02-25 1954-07-20 Edmund S Pomykala Gas ejector
US2737882A (en) * 1952-05-16 1956-03-13 Burroughs Corp High speed printing and perforating machine
US2762297A (en) * 1952-07-30 1956-09-11 Rca Corp High speed recorder
US2784119A (en) * 1953-09-17 1957-03-05 Libbey Owens Ford Glass Co Ultrasonic cleaning of curved surfaces, and apparatus therefor
US2811101A (en) * 1951-06-07 1957-10-29 Sperry Rand Corp Magneto-strictive type printing device
US2831785A (en) * 1958-04-22 Jfzgz
US2854091A (en) * 1955-07-22 1958-09-30 Research Corp Apparatus for cleaning bag filters
US3001769A (en) * 1959-02-27 1961-09-26 Phillips Mfg Company Ultrasonic degreaser
US3015263A (en) * 1961-02-16 1962-01-02 Ibm High speed marking apparatus
US3056589A (en) * 1958-06-23 1962-10-02 Bendix Corp Radially vibratile ceramic transducers

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2831785A (en) * 1958-04-22 Jfzgz
US2401503A (en) * 1943-04-22 1946-06-04 Jens A Paasche Air spraying device
US2578505A (en) * 1948-03-02 1951-12-11 Sperry Prod Inc Supersonic agitation
US2811101A (en) * 1951-06-07 1957-10-29 Sperry Rand Corp Magneto-strictive type printing device
US2684231A (en) * 1952-02-25 1954-07-20 Edmund S Pomykala Gas ejector
US2737882A (en) * 1952-05-16 1956-03-13 Burroughs Corp High speed printing and perforating machine
US2762297A (en) * 1952-07-30 1956-09-11 Rca Corp High speed recorder
US2784119A (en) * 1953-09-17 1957-03-05 Libbey Owens Ford Glass Co Ultrasonic cleaning of curved surfaces, and apparatus therefor
US2854091A (en) * 1955-07-22 1958-09-30 Research Corp Apparatus for cleaning bag filters
US3056589A (en) * 1958-06-23 1962-10-02 Bendix Corp Radially vibratile ceramic transducers
US3001769A (en) * 1959-02-27 1961-09-26 Phillips Mfg Company Ultrasonic degreaser
US3015263A (en) * 1961-02-16 1962-01-02 Ibm High speed marking apparatus

Also Published As

Publication number Publication date
CH404983A (de) 1965-12-31
BE620953A (ja)
DE1233637B (de) 1967-02-02
NL282157A (ja)
GB955225A (en) 1964-04-15

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