US3122039A - Fluid amplifier with automatic reset of the power stream - Google Patents

Fluid amplifier with automatic reset of the power stream Download PDF

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Publication number
US3122039A
US3122039A US173677A US17367762A US3122039A US 3122039 A US3122039 A US 3122039A US 173677 A US173677 A US 173677A US 17367762 A US17367762 A US 17367762A US 3122039 A US3122039 A US 3122039A
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United States
Prior art keywords
channel
output channel
power stream
fluid
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US173677A
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English (en)
Inventor
Iii Edwin U Sowers
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Sperry Corp
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Sperry Rand Corp
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Filing date
Publication date
Priority to NL288855D priority Critical patent/NL288855A/xx
Priority to BE627980D priority patent/BE627980A/xx
Application filed by Sperry Rand Corp filed Critical Sperry Rand Corp
Priority to US173677A priority patent/US3122039A/en
Priority to FR923306A priority patent/FR1349570A/fr
Priority to DE19631449636 priority patent/DE1449636A1/de
Priority to CH139863A priority patent/CH408484A/de
Priority to GB4845/63A priority patent/GB965191A/en
Application granted granted Critical
Publication of US3122039A publication Critical patent/US3122039A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F15C1/02—Details, e.g. special constructional devices for circuits with fluid elements, such as resistances, capacitive circuit elements; devices preventing reaction coupling in composite elements ; Switch boards; Programme devices
    • F15C1/04—Means for controlling fluid streams to fluid devices, e.g. by electric signals or other signals, no mixing taking place between the signal and the flow to be controlled
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
    • Y10T137/2267—Device including passages having V over gamma configuration
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2278—Pressure modulating relays or followers
    • Y10T137/2322—Jet control type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/162—With control means responsive to replaceable or selectable information program
    • Y10T83/166—Removable element carries program
    • Y10T83/169—Indeterminate length, web or strand
    • Y10T83/171—Magnetic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8776—Constantly urged tool or tool support [e.g., spring biased]
    • Y10T83/8785—Through return [noncutting] stroke
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8858—Fluid pressure actuated

Definitions

  • This invention generally relates to apparatus for convetting a fluid energy pulse into a mechanical energy pulse, which finds particular utility in magnetic tapeto-card punch devices and the like.
  • Prior art devices for transferring information between different kinds of storage mediums normally employ means to scan the magnetic record in order to generate an electrical pulse for each magnetized bit thereon. This pulse in turn operates an electro-magnet for driving the punch body through the record card.
  • the electrical pulses generated by information stored on one carrier may be used to actuate typewriter linkages for imprinting characters on a carrier member, or may be used in printers wherein a print hammer is actuated to force a carrier member against the faces of type mounted on a rotating wheel or the like.
  • the actuating power for the driven mechanical element is provided directly by amplified electrical signals, or indirectly by a linkage giving a mechanical advantage, said linkage in turn being operated by electrical power.
  • the present invention provides a new and novel converter in which the driven mechanical element, such as a print hammer or a punch body, is directly powered by fluid energy.
  • the driven mechanical element such as a print hammer or a punch body
  • a transducer is provided to change this electrical pulse energy into fluid pulse energy which in turn provides the driving force of the mechanical body.
  • Another object of the present invention is to provide means whereby electrical pulse energy is ultimately converted into mechanical energy by the intermediate use of fluid pulse energy.
  • One of the novel features of the present invention is the provision of a pure fluid amplifier of the boundary layer type whose power jet stream acts as the prime motive force on the mechanical body. There is further provided automatic reset of the power stream to a stable quiescent condition after said body is driven to perform work whether it be of punching, printing, impact or the like.
  • a boundary layer fluid amplifier a high energy power jet isdirected toward a target area or a receiving aperture system by the pressure distribution in the power jet boundary layer region. This pressure distribution is controlled by the wall configuration of the interaction chamber, the power jet energy level, the fluid transport characteristics, the backloading of the amplifier output passages, and the flow of control fluid to the power jet boundary layer region.
  • Such a pure fluid amplifier thereby possesses positive feedback since the feedback path is created and destroyed each time that the power jet is deflected to another output channel.
  • this boundary layer phenomenon is employed to maintain the power stream in an output channel to thereby force the mechanical body to its work station.
  • the pressure in the output channel builds up to such a value that the power stream is diverted away from entering the channel, and the body is enabled to return to its stable quiescent station.
  • only one control input need be provided to initially force the power stream into this output channel wherein the pressure there created causes the mechanical body to perform work.
  • the power stream remains in this output channel only until said work is performed by the body, after which the pressure attained in said channel automatically forces the power stream to deflect into an exhaust channel without need for providing a separate reset control.
  • Yet another object of the present invention is to provide a converter of the type described above wherein the duration of power stream flow into an output channel is determined by the pressure value in said channel so that automatic reset of the power stream is effected subsequent to the performance of mechanical work.
  • FIGURES 1a and 1b are views partially in section of one embodiment of the invention for converting signals read from a magnetic tape or the like into motion of a punch body for perforating a record card;
  • FIGURE 2 is a view in section of one kind of electric pulse-to-fluid pulse transducer which may be used in the embodiment of FIGURE 1a;
  • FIGURE 3 is another form of transducer which may be used in FIGURE 1a; 7
  • FIGURE 4 is a partial view in section of an alternative embodiment similar to FIGURE 1 but where a print hammer is actuated by a fluid pulse;
  • FIGURE 5 is a third possible embodiment of the present invention shown in diagrammatic form wherein a typewriter linkage may be actuated by the fluid pulse.
  • reference numeral ll indicates a record card which is to be perforated each time that a magnetized area on magnetic tape 11 passes beneath a read head 12.
  • a punch body 13 sharpened at end 14 is inserted Within a recess 15 in body 16.
  • Coiled about punch body 13 is a helical spring 17 which bears against a flange 13 at the other end of punch body 13 in order to maintain said punch body in its retracted position in the absence of an actuating fluid pulse.
  • Flange 18 is shown to be closely fitted within recess 15 in order to effectively seal the volume occupied by spring 17 from the volume created below flange 18 when punch body 13 extends outwardly of body 16 and through record card 10.
  • a channel 19 which is one output channel of a pure fluid amplifier generally comprised of the interconnected fluid ducts enclosed by dotdash rectangle 20 in body 16.
  • This pure fluid amplifier consists of an input power stream channel 21 which is provided with either a liquid or gaseous fluid from a pump or compressor, not shown in any of the figures.
  • the fluid under pressure in power stream channel 21 issues into an interaction chamber 22 via a power orifice 23.
  • Chamber 22 is bounded by the two outer converging walls 26 and 27 of output channels 19 and 24, whose inner converging walls intersect to form a dividing knife edge 25.
  • the outer walls 26 and 27 of the output channels may also undergo an acute change of slope to form cavi ties 28 and 29, respectively, in order to insure that the power stream will be maintained in the output channel to which it is diverted unless the pressure in said output channel rises above a certain threshold value.
  • Such an increase in pressure in output channel 19 through which the power stream is flowing may be caused by backloading in the manner subsequently to be described.
  • Output channel 19 feeds into recess 17 as previously mentioned, while output channel 24 may be returned to the inlet of the power stream source through an exit port 36 in body 16.
  • FIGURE 1a the walls 26 and 27 of chamber 22 are oflset with respect to power orifice 23.
  • This offset configuration coupled with the cavities 28 and 29 in the respective output channels, allows the power stream to maintain its flow through whichever one of output channels it is diverted.
  • This memory phenomenon is exhibited because of creation of the so-called boundary layer region, which is a low pressure region between the power stream and the wall of the output channel through which said stream passes. Creation of a boundary layer region in fluid amplifiers, to provide positive feedback and thus a self-locking feature, is per se old.
  • the provision of cavities is not absolutely essential since the ollset region near the nozzle 23 exit and/ or suitably curved walls 26 and 27 may be suflicient to maintain boundary layer lockon.
  • flange 1% is preferably fitted within recess to prevent any substantial amount of fluid in channel 19 from flowing into the outside environment.
  • the power stream makes a U turn at the blocked outlet of channel 19 and eventually exits through channel 24 to port 39.
  • the factors involved in this phenomenon are the location of cavity 23, its geometry, and the width of channel 19. However, inasmuch as the exhaust aperture from channel 19 is considerably reduced, if not completely blocked, the number of fluid particles in channel 19 begins to increase with a consequent increase in pressure in that channel.
  • the configuration of channel 19, especially in the region of cavity 23, is so designed that upon a certain second threshold value of pressure being attained therein (subsequent to attainment of the first threshold value), the power stream no longer maintains its flow in output channel 19 but instead is diverted back into output channel 24.
  • This designed second threshold value also depends upon the wall configuration of chamber 22, as well as on the power jet energy level, the degree of backloading of the output channel 19 (i.e., degree of obstruction of said channel by flange l3), and other variables which are well known to those skilled in the art.
  • the presence of the cavity 28 may be desirable, but not necessary, since it causes generation of a vortex within the channel as the power stream flows therethrough which aids in creating the boundary layer region essential to the positive self-locking efl'ect.
  • the power stream can be made to switch from channel 19 back to channel 24 for a wide range of channel pressures.
  • the second threshold value of pressure must be higher than the first threshold value required to drive the punch body upward through the record card, so that this mechanical motion occurs before the power stream is diverted away from entering channel 19.
  • control stream orifice 31 located in side wall 27 of chamber 22.
  • control stream channel 32 in body is through which is applied a fluid pressure pulse.
  • This pressure pulse in control channel 32 is created by a transducer of some type generally indicated by block 33 in FIGURE 1a, which is connected to control channel 32 via a conduit 34. If the power stream issuing into chamber 22 is locked on to wall 27 so as to flow through output channel 2 a sufiicient increase in pressure at control orifice 31 will break the boundary layer region created adjacent said wall so as to make unstable said power stream flow.
  • the power stream switches to change direction so that it is now diverted into output channel 1'19.
  • a boundary layer region is thereby created adjacent wall 26 to thereafter maintain power stream flow therein even after termination of the pressure pulse at control orifice 31.
  • the only way in which the power stream can now be diverted back into output channel 24 is by the subsequent increase in pressure in channel 119 to the designed second threshold value. This in turn makes power stream flow in channel 19 unstable so as to divert it back into output channel 24.
  • a boundary layer region is again created between the power stream and Wall 27 to cause said power stream to lock on and thus maintain its flow in channel 24 until the appearance of another pressure pulse at control orifice 31.
  • one useful function of this invention is to provide means whereby an electrical pulse induced in the winding of head 12 is converted into a perforation in record card 10. Said electrical pulse may be directed to transducer 33 Via amplifier 35 in order to convert the electrical energy into a pressure pulse in channel 32.
  • transducer 33 Via amplifier 35 in order to convert the electrical energy into a pressure pulse in channel 32.
  • FIGURE 2 two diverse types are shown in FIGURE 2 and FIGURE 3.
  • a pair of piezo-electric crystals 38 and 39 are located on opposite sides of a fluid channel 40 such that they normally extend into said channel in order to block flow of fluid therein.
  • fluid from a pressure source enters the transducer via an inlet port 41 and attempts to flow through channel 4% into output conduit 34.
  • the piezo-electric crystals 38 and 35 extend inwardly of channel 40 in order to block any substantial flow of fluid therethrough, so that the pressure existing to the right of these crystals is not suilicient to disrupt the boundary layer region adjacent wall 27 in which orifice 31 is located.
  • an electrical signal of proper polarity being applied across conductors 36 and 37 (which in FIGURE 1a is generated by the passage of a magnetized area beneath read head 12)
  • a compression stress is exerted along the mechanical axes of crystals 38 and 39 of sui'ficient magnitude to cause retraction of said crystals from the channel 40 so as to permit passage of fluid therethrough.
  • the electrical signal applied between conductors 36 and 37 opens the valve in channel 40 to permit the fluid from inlet port 41 to flow via conduit 34 and channel 32 into chamber 22.
  • This fluid control stream issuing from orifice 31 is suflicient to disperse the boundary layer region and so divert the power stream into output channel 19.
  • crystals 33 and 39 again return to their extended position to effectively block fluid flow in channel 40 and thus terminate the control stream from orifice 31.
  • the power stream is flowing through output channel 19 and will be maintained therein by the creation of a boundary layer region until the Second threshold value of pressure is attained in this output channel.
  • the time required for this second threshold value of pressure to be reached, when once the power stream begins to flow in channel 19, should be less than the time interval between the sensing of adjacent magnetic marks on member 11, so that the power stream switches back to its initial condition through output channel 24 before occurrence of another control stream pulse from orifice 31.
  • FIGURE 3 shows an alternative transducer which may be employed in the present invention.
  • a flexible diaphragm 42 is fixed in a channel 43 to which is connected the conduit 34 shown in FIGURE 1.
  • Channel 43, conduit 34, and channel 32 are filled with fluid which may be the same as the fluid comprising the power stream in fluid amplifier 20.
  • a voice coil 44 or the like may be provided to which are attached conductors 36 and 3'7.
  • FIGURES 2 and 3 illustrate other types such as a movable plate capacitor or the like. All that is required to divert the power stream into output channel 19 is a temporary pressure pulse at orifice 31 suflicient in magnitude to destroy the boundary layer region which normally maintains power stream flow through channel 24.
  • the divider edge 25 in chamber 22 may be offset with respect to the longitudinal axis of orifice 23 so that the entrance to channel 24 is larger than the entrance to channel 19. This insures that the power stream initially flows through exhaust channel 24 rather than through channel 19 at the time when the power stream source is initially connected to channel 21.
  • FIGURES 4 and 5 illustrate how the piston member 13 can be made to perform work other than perforating record cards.
  • FIGURE 4 a body 45 is employed as a print hammer for driving a paper web 46 or the like against the face of a type character 47 located on a type wheel 48.
  • the movable piston 45 which is similar in construction to piston 13 in FIGURE la, is employed to provide an impact force for imprinting the impression of a type face of a typical rotating wheel printer.
  • FIGURE 5 there is shown how a typewriter linkage 49 can be actuated by a piston member 5% which is driven by the build-up in pressure in an output channel 51 corresponding to output channel I9 in FIGURE la. Piston St) is fitted within channel 51 so that it is driven outward when the first threshold pressure is attained.
  • FIGURE 5 further illustrates how a typical record card, having a plurality of columns in which characters are represented by a four bit binary code, may be scanned by brushes 53 so that a translator 54 selects an output line 55 to energize an associated transducer 56 which in turn causes piston Stl to actuate a typewriter linkage and print a particular character.
  • a typical record card having a plurality of columns in which characters are represented by a four bit binary code
  • a translator 54 selects an output line 55 to energize an associated transducer 56 which in turn causes piston Stl to actuate a typewriter linkage and print a particular character.
  • the embodiments disclosed herein include the conversion of electrical energy to fluid pulse energy, the present invention is not so restricted, since the control stream pulse issuing ifrom orifice 31 can be initiated by other means. Furthermore, other methods may be employed to temporarily divert the power stream into channel 1?.
  • the basic concept of this invention is the arrangement of a movable body positioned to backload one output channel of a fluid amplifier of the boundary layer type so that motion of the body occurs prior to the attaining of a switch back pressure in said channel.
  • the means for resetting the movable body in its quiescent position may either be additional means, such as the coil spring I7 shown in FIGURE la, or it might be the weight of piston 13 itself. Therefore, it is apparent that many modifications may be made to the preferred embodiments by one skilled in the art without departing i rom the spirit of the invention as defined in the appended claims.
  • Apparatus for converting fluid pressure aulse energy hrto mechanical pulse energy which comprises:
  • (0) means for diverting said power stream into said output channel, whereupon the pressure in said output channel subsequently increases from a quiescent value lower than said first threshold value to said second threshold value which in turn divents said power stream away from entering said output channel.
  • said power stream diverting means comprises means for generating a fluid control jet stream pulse which impinges upon said power stream to divert the latter into said output channel.
  • said power stream divesting means comprises transducer means responsive to an electrical pulse for generating a fluid control jet stream pulse which impinges upon said power stream to divert the latter into said output channel.
  • Apparatus for converting fluid pressure pulse energy into mechanical pulse energy which comprises:
  • () means resetting said movable means at said first position for any pressure in said output channel less than a first threshold value, where said first threshold value is less than said second threshold value;
  • said resetting means is a spring member applying force against said movable means in a direction opposite to the force applied by the pressure in said output channel.
  • Apparatus for converting fluid pressure pulse energy into mechanical energy which comprises:
  • ((1) means located within said second output channel and movable from a first position towards a second position for increasing the volume of said second output channel when the p "esstue therein is greater than a first threshold value, where said first threshold value is less than said second threshold value;
  • Apparatus according to claim 12 wherein said power stream diver ing means comprises a control orifice in one wall of said chamber, and means adapted to supply a fiuid control jet stream pulse into said chamber via said control orifice which impinges upon said power stream to divert the latter into said second output channel.
  • Apparatus according to claim 12 wherein is further included means resetting said movable means at said first position for any pressure in said output channel less than said first threshold value.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Theoretical Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Credit Cards Or The Like (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
US173677A 1962-02-16 1962-02-16 Fluid amplifier with automatic reset of the power stream Expired - Lifetime US3122039A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL288855D NL288855A (de) 1962-02-16
BE627980D BE627980A (de) 1962-02-16
US173677A US3122039A (en) 1962-02-16 1962-02-16 Fluid amplifier with automatic reset of the power stream
FR923306A FR1349570A (fr) 1962-02-16 1963-01-31 Perfectionnements aux transducteurs
DE19631449636 DE1449636A1 (de) 1962-02-16 1963-02-02 Umwandler
CH139863A CH408484A (de) 1962-02-16 1963-02-05 Monostabile Schalteinrichtung
GB4845/63A GB965191A (en) 1962-02-16 1963-02-06 Transducer using a fluid amplifier of boundary layer type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US173677A US3122039A (en) 1962-02-16 1962-02-16 Fluid amplifier with automatic reset of the power stream

Publications (1)

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US3122039A true US3122039A (en) 1964-02-25

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US173677A Expired - Lifetime US3122039A (en) 1962-02-16 1962-02-16 Fluid amplifier with automatic reset of the power stream

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US (1) US3122039A (de)
BE (1) BE627980A (de)
CH (1) CH408484A (de)
DE (1) DE1449636A1 (de)
GB (1) GB965191A (de)
NL (1) NL288855A (de)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3191858A (en) * 1963-06-05 1965-06-29 Sperry Rand Corp Keypunch input with repeat readout incorporating fluid amplifying means
US3225780A (en) * 1963-05-20 1965-12-28 Raymond W Warren Pressure recovery from bistable element
US3232221A (en) * 1963-06-28 1966-02-01 Burroughs Corp Explosive marking and printing apparatus
US3234934A (en) * 1965-04-06 1966-02-15 Kenneth E Woodward Fluid amplifier controlled piston
US3249302A (en) * 1963-01-21 1966-05-03 Romald E Bowles Visual readout device
US3263607A (en) * 1964-07-29 1966-08-02 Sperry Rand Corp Fluid hammer impression actuating means
US3266355A (en) * 1964-07-23 1966-08-16 Sperry Rand Corp Pneumatic punch
US3267481A (en) * 1964-03-12 1966-08-16 Bowles Eng Corp Recording apparatus for fluid systems
US3279361A (en) * 1965-01-04 1966-10-18 Data Products Corp Print hammer positioning means employing high velocity gas stream directed against hammer
US3282206A (en) * 1964-12-21 1966-11-01 Sperry Rand Corp Hydraulically actuated print hammer for high speed printers
US3298603A (en) * 1964-04-07 1967-01-17 Moog Inc Apparatus for tape recording information
US3307675A (en) * 1964-04-21 1967-03-07 Siemens Ag Fluid operated apparatus for printing binary-coded information
US3315775A (en) * 1965-08-27 1967-04-25 Sperry Rand Corp Fluid actuated typewriter
US3348562A (en) * 1964-01-30 1967-10-24 Honeywell Inc Control apparatus
US3373438A (en) * 1966-01-03 1968-03-12 Pitney Bowes Inc Jet printer
US3382748A (en) * 1965-06-30 1968-05-14 Heberlein & Co Ag Cutting apparatus
US3417850A (en) * 1965-10-12 1968-12-24 Ibm Pneumatic incremental tape actuator
US3943855A (en) * 1964-05-25 1976-03-16 The United States Of America As Represented By The Secretary Of The Army Computer for missile
US4109483A (en) * 1976-02-27 1978-08-29 Mathias Mitter Apparatus for printing webs
US4155229A (en) * 1976-02-27 1979-05-22 Mathias Mitter Printing apparatus
US5647210A (en) * 1993-01-28 1997-07-15 Gustafsson; Leif Driving device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3001539A (en) * 1960-08-15 1961-09-26 Hurvitz Hyman Suction amplifier
FR1278782A (fr) * 1960-01-26 1961-12-15 Perfectionnement aux systèmes actionnés par un fluide
US3055533A (en) * 1961-01-23 1962-09-25 Chicago Bridge & Iron Co Primary seal for floating roofs

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1278782A (fr) * 1960-01-26 1961-12-15 Perfectionnement aux systèmes actionnés par un fluide
US3001539A (en) * 1960-08-15 1961-09-26 Hurvitz Hyman Suction amplifier
US3055533A (en) * 1961-01-23 1962-09-25 Chicago Bridge & Iron Co Primary seal for floating roofs

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3249302A (en) * 1963-01-21 1966-05-03 Romald E Bowles Visual readout device
US3225780A (en) * 1963-05-20 1965-12-28 Raymond W Warren Pressure recovery from bistable element
US3191858A (en) * 1963-06-05 1965-06-29 Sperry Rand Corp Keypunch input with repeat readout incorporating fluid amplifying means
US3232221A (en) * 1963-06-28 1966-02-01 Burroughs Corp Explosive marking and printing apparatus
US3348562A (en) * 1964-01-30 1967-10-24 Honeywell Inc Control apparatus
US3267481A (en) * 1964-03-12 1966-08-16 Bowles Eng Corp Recording apparatus for fluid systems
US3298603A (en) * 1964-04-07 1967-01-17 Moog Inc Apparatus for tape recording information
US3307675A (en) * 1964-04-21 1967-03-07 Siemens Ag Fluid operated apparatus for printing binary-coded information
US3943855A (en) * 1964-05-25 1976-03-16 The United States Of America As Represented By The Secretary Of The Army Computer for missile
US3266355A (en) * 1964-07-23 1966-08-16 Sperry Rand Corp Pneumatic punch
US3263607A (en) * 1964-07-29 1966-08-02 Sperry Rand Corp Fluid hammer impression actuating means
US3282206A (en) * 1964-12-21 1966-11-01 Sperry Rand Corp Hydraulically actuated print hammer for high speed printers
US3279361A (en) * 1965-01-04 1966-10-18 Data Products Corp Print hammer positioning means employing high velocity gas stream directed against hammer
US3234934A (en) * 1965-04-06 1966-02-15 Kenneth E Woodward Fluid amplifier controlled piston
US3382748A (en) * 1965-06-30 1968-05-14 Heberlein & Co Ag Cutting apparatus
US3315775A (en) * 1965-08-27 1967-04-25 Sperry Rand Corp Fluid actuated typewriter
US3417850A (en) * 1965-10-12 1968-12-24 Ibm Pneumatic incremental tape actuator
US3373438A (en) * 1966-01-03 1968-03-12 Pitney Bowes Inc Jet printer
US4109483A (en) * 1976-02-27 1978-08-29 Mathias Mitter Apparatus for printing webs
US4155229A (en) * 1976-02-27 1979-05-22 Mathias Mitter Printing apparatus
US5647210A (en) * 1993-01-28 1997-07-15 Gustafsson; Leif Driving device

Also Published As

Publication number Publication date
CH408484A (de) 1966-02-28
NL288855A (de) 1900-01-01
DE1449636A1 (de) 1969-02-06
GB965191A (en) 1964-07-29
BE627980A (de) 1900-01-01

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