US3715838A - Apparatus for correcting misprinted matter on sheet material - Google Patents

Apparatus for correcting misprinted matter on sheet material Download PDF

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Publication number
US3715838A
US3715838A US00120248A US3715838DA US3715838A US 3715838 A US3715838 A US 3715838A US 00120248 A US00120248 A US 00120248A US 3715838D A US3715838D A US 3715838DA US 3715838 A US3715838 A US 3715838A
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United States
Prior art keywords
cylinder
enclosure
air
abrasive material
sheet material
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Expired - Lifetime
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US00120248A
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English (en)
Inventor
G Young
H Silman
E Hill
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BTR Industries Ltd
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Vacu Blast Ltd
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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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/26—Devices, non-fluid media or methods for cancelling, correcting errors, underscoring or ruling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L19/00—Erasers, rubbers, or erasing devices; Holders therefor

Definitions

  • Fieid llllll 319 320 tion may take place within an enclosure which is posillllll u tioned over the sheet material and to which a suction air flow is connected to remove the abrasive material after use.
  • FIGS l INVENTOR ERIC JUHN HILL ETAL 87M ATTORNEYS APPARATUS FOR CORRECTING MISPRINTED MATTER ON SHEET MATERIAL This invention relates to apparatus of the kind in which granular or abrasive material is directed from a storage hopper on to a surface to be treated. In particular, though not exclusively, it relates to apparatus for correcting misprinted matter or set-off on sheet material.
  • Theinvention consists in a method for correcting a misprint.
  • the invention pertains to an apparatus for correcting misprinted matter on sheet material comprising means for directing a stream of finely divided particulate abrasive material on the sheet material and means for collectingthe spent material immediately after use.
  • the invention still further consists in an apparatus as set forth in the preceding paragraph in which the stream of particulate material is projected within an enclosure which is positioned over the sheet material and to which a suction air flow is connected to remove the abrasive material after use.
  • the invention still further consists in an apparatus as set forth in the preceding paragraph in which the particulate material is projected at a pre-determined velocity and angle to the surface of the sheet material in a stream of compressed air through an accelerating nozzle.
  • the means for directing abrasive material entrained within a stream of air comprises a storage hopper for the abrasive material, which is closed below by a porous plate and above by a filler closure, a chamber below the porous plate with means for connection to a source of air under pressure, pressure air operated valve means mounted across the hopper just above the porous plate and comprising of first cylinder connected at one end to a second cylinder having a piston with a piston rod co-axial of the first cylinder, a co-axial bore in the cylinder opposite to the second cylinder, which is engageable by the end of the piston rod to close the latter, a radial bore in the first cylinder for the passage of abrasive material from the hopper to the first cylinder, a channel for the passage of air from the first cylinder to the hopper above the level of the abrasive material therein, duct means associated with valve means connected on opposite sides of the piston in
  • the means for directing abrasive material entrained within a stream of air comprises a storage hopper for the granular material which is closed below by a porous plate and above by a filer enclosure, a chamber below the porous plate with means for connection to a source of air under pressure, a channel means connected to a source of pressure passing through the storage hopper above the porous plate with a restrictor orifice co-axially inside the channel, a further orifice through the wall of the channel for the passage of abrasive material from the hopper into the channel, and a nozzle connected to the outlet end of the channel means.
  • the invention still further consists in apparatus as set forth in the preceding paragraph in which the nozzle is mounted in an enclosure of box like form and has a bottom with an aperture therein for the passage of the stream of granular material therefrom on to sheet material positioned adjacent to and below the bottom of the enclosure.
  • the invention still further consists in apparatus as set forth in the preceding paragraph in which an air pervious seal ring is provided around and below the aperture in the bottom of the enclosure.
  • the invention still further consists in apparatus as set forth in the preceding paragraph in which the enclosure is provided with a slot in opposite sides thereof, the one open to atmosphere while the other is adapted to be connected to the fan of a dust collector unit.
  • the invention still further consists in apparatus as set forth above mounted so as to be readily moveable relative to the sheet material so as to direct the stream of abrasive material on to the desired point upon the sheet material.
  • FIGS. 1, 2 and 3 show diagrammatically in cross-section three embodiments of the invention
  • FIG. 4 shows a plan view of a complete apparatus
  • FIG. 5 shows a side elevation of the apparatus of FIG. 4
  • FIG. 6 shows a rear elevation of the apparatus of FIG. 4
  • FIG. 7 shows a sectional elevation in detail through the storage hopper of blast enclosure of FIG. 4; while FIG. 8 shows a sectional elevation in detail through the storage hopper and blast enclosure in a further embodiment.
  • the particulate material is directed on to the paper A, at a finite angle to it, either by conveying it in a compressed air stream B, through an accelerating nozzle C, or centrifugally directing it by means of a multi-bladed wheel D, into which the material is fed.
  • the spent granular material is removed by suction.
  • This may be achieved by means of a recovery annulus E, closely surrounding the accelerating nozzle as shown in FIG. 1, a separate recovery nozzle F, close to and at an angle to the accelerating nozzle or multi-bladed wheel, as shown in FIG. 2, or finally, by mounting the accelerating nozzle or wheel inside a viewing cabinet G, through which a recovery air flow H, is induced, as shown in FIG. 3.
  • surrounding the accelerating nozzle,-an air pervious ring I may seal the annulus against the paper being treated.
  • This ring may consist of a bristle brush, or porous plastic, etc., to prevent the particulate material from escaping into the surrounding atmosphere but at the same time allow air to be drawn into the annulus.
  • abrasives which can be employed are angular aluminous oxide, silicon carbide, etc., although the invention is by no means limited to the use of these substances.
  • the most suitable range of size for the abrasive is between 6-16 microns and 19-47 microns, i.e. sizes 600 and 320. It is projected on to the'paper at an angle of from 90 to to its plane by means of compressed air preferably at a pressure of 10 to 50 lbs per square inch or, alternatively, centrifugally propelled.
  • the machine for carrying the process out in this invention consists of a means of transferring sheets of paper or the like singly on to a flat bed as is the common practice in printing, after which the abrasive is projected on to it from a stationary or moving source.
  • the speed of movement of the abrasive stream across the paper source can be up to 100 feet per minute, although a speed of 10 to 30 feet per minute is usually adequate.
  • the blast and recovery means on an arm which can be raised and lowered on to the sheet for spot blasting.
  • the sheets can either be stocked in a pile and the top sheet removed between each spot blast or, alternatively, the sheets can be fed into position against a register between each spot blast.
  • the nozzle bore can be as small as .0.25mm to provide a narrow blast pattern.
  • a stencil .1 made of rubber, steel or other suitable material can be applied to the paper to restrict the area on to which the particulate matter is projected.
  • the paper may be over-printed correctly. This can be carried out on a separate machine, but on continuous applications the print erasure and over-printed operations can be carried out more conveniently on the same machine successively, by synchronizing the paper feeding, particulate material application and over-printing processes, so that a sufficient time is allowed for the misprinted matter to be removed.
  • a further embodiment consists of a storage hopper 1, see FIGS. 4-7, within which is stored abrasive material 2. Beneath the storage hopper is mounted a feed valve 3, which meters a controlled quantity of the abrasive material into an air stream in which it is conveyed along a blast hose 4, made of rubber, plastic, or similar flexible material and through a nozzle 5. This accelerates the flow of air and abrasive material and directs it in a concentrated stream 6, towards a sheet material 7, being treated.
  • the nozzle may be as small as 025mm in bore.
  • the nozzleS is positioned inside an enclosure 8, to retain the stream of air and abrasive and prevent it spreading beyond the particular area being treated.
  • an outlet duct 9 which may, for instance, being made of a circular or rectangular tube, with a transition piece 10, forming a recovery slot 11, across the width of the enclosure.
  • This outlet duct 9, is connected to a suction air flow to remove abrasive material and debris from the enclosure.
  • a Dust Collector/Fan unit (not shown) to the end of the outlet duct 9, by means of a flexible vacuum hose 12, FIG. 5.
  • an air entry slot 13 In the opposite face of the enclosure to the recovery slot is an air entry slot 13, which provides a flow of air at high velocity across the base of the enclosure to remove the spent abrasive material immediately after impact on the sheet material.
  • the storage hopper 1 this is fitted at the top with a quick-acting filler plug 14, for charging with abrasive material.
  • a cap 15 Beneath the hopper is a cap 15, which retains a porous disc of ceramic or sintered bronze etc., 16, which forms an inner base of the hopper.
  • the porosity of the disc must be such that, while permitting air to flow through, it will not allow the passage of the abrasive material.
  • a feed tube 17, containing a stepped bore 18 Passing horizontally through the storage hopper at a point just above the porous disc is a feed tube 17, containing a stepped bore 18 (FIG. 7).
  • the blast hose 4 which is locked by means of a compression ring 19, so that the hose end just projects into the larger (inlet) bore.
  • the inlet end of the feed tube 17, is connected to an adaptor elbow 20, into which in turn is connected an air cylinder 21.
  • a piston rod 22, of a piston in the air cylinder has a conical or similarly shaped projecting end, and is of such a length that when fully extended it seals against the end of the blast hose 4.
  • the degree of fluidization achieved is controlled by the vertical air flow which is determined by the bore of the nozzle 5.
  • the porosity of the disc 16, and dimensions of the hopper 1, can also be the feed tube 17, allows the abrasive material to flow into the feed tube and to be carried in the air flow and accelerated through the nozzle 5.
  • the size of the orifice 27, is selected to provide the correct flow of abrasive material, and on extending the piston rod 22, to contact the hose 4, instant cessation of air and abrasive material flow results. Conversely, by mounting the storage hopper adjacent to the enclosure the length of the hose 4, is kept to a minimum.
  • the piston rod is retracted, the flow of air and abrasive material through the nozzle is virtually instantaneous and without surging due to excessive abrasive lying in the hose 4. It is important that, when retracted, the piston rod is well clear of the orifice 27, so that abrasion of the piston rod by the flow of abrasive material is eliminated.
  • the hose 4, and nozzle 5, can be conveniently mounted in the enclosure inside a tubular holder 28, and set to direct abrasive at a convenient angle on to the sheet material through an aperture 29, in the baseplate 30, of the enclosure.
  • the holder 28 is fixed to direct abrasive material through a very small orifice 31, in a stencil 32, made of abrasion resistant rubber or plastic.
  • the stencil can be readily replaceable to suit the area being treated and retained in position by a simple clip 33.
  • the holder 28 can be flexibly mounted, for instance in a rubber diaphragm 34. This enables the nozzle 5, to be directed over a large area around its mean position by operation of the handle 35. For all methods of operation in order to enable the erasing action to be readily accessed a viewing window 36, is provided in the top of the enclosure.
  • the enclosure baseplate 30, may be laid directly on to the sheet material 7, when abrasive material is directed through the nozzle.
  • fine dust from the erasure operation may penetrate locally between the baseplate and the sheet material around the aperture 29, although this is not normally detrimental to subsequent correction.
  • a seal 37 of air pervious material such as felt around the aperture, air is drawn locally into the enclosure to scavenge any dust, although the abrasive material will not be able to escape from the enclosure.
  • Theair entry slot 13, can then be restricted in area or possibly eliminated completely so that all air enters via the aperture 29.
  • FIG. 8 An alternative embodiment of the invention shown in FIG. 8, consists of a storage hopper 58, within which is stored abrasive material 59. Within the storage hopper is a feed valve 60', which meters a controlled quantity of the abrasive material into an air stream in which it is conveyed along a blast hose 61, made of rubber, plastic or similar flexible material and through a nozzle 62. This accelerates the flow of air and abrasive material and directs it in a concentrated stream 63, towards a sheet material 64, being treated.
  • the nozzle 62 is positioned inside an enclosure 83, to contain the stream of air and abrasive and prevent it spreading beyond the area being treated.
  • an outlet duct 65 Connected to the enclosure is an outlet duct 65, which may for instance be made of a circular or rectangular tube with a transition piece 66, forming a recovery slot 67, across the width of the enclosure.
  • This outlet duct 65 is connected to a suction air flow to remove abrasive material and debris from the enclosure.
  • a dust collector/fan unit (not shown) to the end of the outlet duct 65, by means of a flexible vacuum hose as 12, in FIG. 5.
  • an aperture 68 which permits the flow of air to enter at a velocity sufficient to prevent upward escape of abrasive material and thus remove the spent abrasive material immediately after impact on the sheet material.
  • the aperture 68 also serves as a viewing aperture so that the effect of the abrasive impact can be observed.
  • a porous disc of ceramic or sintered bronze, etc., 70 is retained by means of bolts or similar devices against a rubber or similar seal 71.
  • the porosity of the disc is such that while permitting air to flow through, it will not allow the passage of abrasive material.
  • Passing horizontally through the storage hopper at a point just above the porous disc is an inlet tube 72, and the blast hose '61. These are locked in position by means of nuts 73, and flexible rings 74, to prevent the escape of abrasive material.
  • the feed valve 60 containing an orifice 75, to control the flow of air along the tube 72.
  • a secondary tube 76 with an orifice 77, causes abrasive material to flow from the hopper 58, at a controlled rate into the tube 76, and along the hose 61, to the nozzle 62, where it is accelerated and directed on to the sheet material.
  • a hose 87 is connected from the hopper at a point above the level of the abrasive material and into the outlet duct 65.
  • the orifice 77 can be positioned anywhere around the feed valve 60, and is of -a size selected to provide the correct flow of abrasive material.
  • the hose 61 can be rigidly attached to the enclosure 88, and set to direct the stream of abrasive material at a convenient angle on to the sheet material through an aperture 79, in the base plate 80, of the enclosure.
  • a stencil 81 may be employed, retained in position with a clip 82, and with an orifice 83, to limit the effect of the blast stream on the paper to a specific area.
  • the nozzle can of course be hand manipulated to be directed over the entire area of the aperture 79, being readily viewable through the upper aperture 68.
  • an air pervious seal 84 may be affixed to the base of the enclosure around the aperture to prevent escape of dust or abrasive material on to the surface of the sheet material. It has been found that by shaping the front edge of the rear seal as shown by 85, and omitting the seal across the front edge of the aperture, some of the air drawn through the slot 67, is able to enter the base slot $6, and more effectively sweep dust and abrasive material from the sheet material.
  • FIG. 8 has applications relating to abrasive blasting generally for example for the industrial cleaning of component parts, with or without an enclosing cabinet.
  • the enclosure In order to be able to direct the abrasive material on to any particular area of the sheet material 7, or 64, it is essential that the enclosure be able to be moved readily over the sheet material. it must also be capable of being locked in a pre-determined position, when correcting a batch of sheets. Thus as each sheet is transferred into position for treatment, the same area will be erased for correction. At the same time, it is required for the enclosure to be raised from the sheet material for the treated sheet to be removed and a new sheet inserted. Finally, for simplicity of operation, the control of the stream of abrasive material should be automatically operated by the lowering of the enclosure on to the sheet material.
  • a lower guide tube 38 Positioned around the outlet duct 9, is a lower guide tube 38, (FIGS. 4-6) which may be of nylon or similar low friction material, and rollers 4%. These are so adjusted that the guide tubes moves freely over the outlet duct but with the minimum of side movement.
  • the enclosure 8, can thus be extended to reach fully over the sheet material, and be locked in position by the screw 41, which grips the outlet duct in the lower guide tube.
  • an upper guide tube 42 Rigidly attached to the top of the lower guide tube, but at 90 to it, is an upper guide tube 42, which is similarly fitted with side guides 43, and rollers 44. This moves over a transverse bar or tube 45, of sufficient length that the enclosure 8, can fully traverse the width of the sheet material. The upper guide tube can then be locked in position by the screw do, which grips the transverse tube.
  • the ends of the transverse tube are adapted to locate in two flange mounted ball bearings 47, attached to the vertical end plates 4%, of the base frame 49. This enables the transverse tube to rotate about its longitudinal axis which causes the enclosure to be raised or lowered from the sheet material.
  • a crank arm 50 Connected to one end of the transverse tube is a crank arm 50, attached by means of a pin 51, to a fork 52.
  • the fork is fitted to the piston rod or an air cylinder 53, which in turn is secured on a trunnion 54.
  • a foot operated control valve can conveniently be employed which exhausts hose 55, and pressurizes hose 56, and after a preset delay period exhausts hose 24, and pressurizes hose 25. This causes the enclosure to be lowered on to the sheet material after which a flow of air and abrasive material takes place through nozzle 5.
  • the feed valve air cylinder 21 first closes to stop the blast stream, and after a preset period the air cylinder 53, raises the enclosure from the sheet material 7. It is thus only necessary to arrange an automatic feed of sheet material between the actuation of the foot operated valve, to remove a misprinted area from a batch of sheets.
  • An apparatus for correcting misprinted matter on sheet material comprising means for directing a stream of finely divided particulate abrasive material entrained within a stream of air onto the sheet material, and means for collecting spent material resulting from impingement of said abrasive material against said sheet material, an enclosure positionable over said sheet material within which said stream of particulate abrasive material is projected, and means including a source of suction air flow connected to said enclosure; said means for directing said abrasive material comprising a storage hopper for said abrasive material, closure means for said hopper comprising a porous plate at its lower end and a filler closure at its upper end, a chamber below the porous plate and means connecting said chamber to a source of air under pressure, air operated valve means mounted across the hopper just above the porous plate and comprising a first cylinder connected at one end to a second cylinder, a piston in said second cylinder and having a piston rod coaxial of the first cylinder, said rod having a project

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US00120248A 1970-03-06 1971-03-02 Apparatus for correcting misprinted matter on sheet material Expired - Lifetime US3715838A (en)

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GB1468470 1970-03-26

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Cited By (44)

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US3999508A (en) * 1972-06-21 1976-12-28 U.S. Philips Corporation Apparatus for electrostatically coating bulb interiors
EP0005604A1 (en) * 1978-05-19 1979-11-28 Worldwide Blast Cleaning Limited A surface cleaning machine
US4308819A (en) * 1980-08-11 1982-01-05 Commercial Resins Co. System for spraying fluidized powder circumferentially around a pipe joint
US4993200A (en) * 1986-03-11 1991-02-19 Kawasaki Steel Techno-Research Corp Pollution free blaster system and blaster head therefor
US5037432A (en) * 1987-11-27 1991-08-06 Lorenzo Molinari Adjustable apparatus for removing surface portions of human tissue
WO1997007933A1 (en) * 1995-08-25 1997-03-06 Ltc Americas Inc. Bolt head blaster
US5732631A (en) * 1995-06-06 1998-03-31 Man Roland Druckmaschinen Ag Method and device for cleaning a cylinder of a rotary printing machine
US5833521A (en) * 1996-12-27 1998-11-10 Ltc Americas, Inc. Air cushioned vacuum blast head
US6162232A (en) * 1999-03-18 2000-12-19 Shadduck; John H. Instruments and techniques for high-velocity fluid abrasion of epidermal layers with skin cooling
US6277128B1 (en) 1998-07-11 2001-08-21 J. Scott Muldner Skin abrasion treatment device
US6299620B1 (en) 1999-03-18 2001-10-09 Aq Technologies, Inc. Instruments and techniques for inducing neocollagenesis in skin treatments
USD450842S1 (en) 2000-02-28 2001-11-20 Dynatronics Corporation Dermabrasion system
USD451196S1 (en) 2000-02-28 2001-11-27 Dynatronics Corporation Dermabrasion hand piece
US6387103B2 (en) 1999-12-30 2002-05-14 Aq Technologies, Inc. Instruments and techniques for inducing neocollagenesis in skin treatments
US6511486B2 (en) 2001-03-09 2003-01-28 Silhouet-Tone Ltee Dermabrasion hand tool for abrasively removing skin surface
US6582442B2 (en) 2000-02-28 2003-06-24 Dynatronics Corporation Method and system for performing microabrasion
US20030212415A1 (en) * 2001-11-21 2003-11-13 Karasiuk Kenneth B. Skin treatment system and method of use
US6926681B1 (en) 1999-05-11 2005-08-09 Dynatronics Corporation Method and system for performing microabrasion and suction massage
US6928930B1 (en) * 1995-05-04 2005-08-16 Man Roland Druckmaschinen Ag Device for cleaning printing cylinders
US20060253125A1 (en) * 2005-03-07 2006-11-09 Ignon Roger G Microdermabrasion method and apparatus
US20070156124A1 (en) * 2005-12-30 2007-07-05 Roger Ignon Apparatus and methods for treating the skin
US20090177171A1 (en) * 2008-01-04 2009-07-09 Edge Systems Corporation Apparatus and method for treating the skin
US20090192442A1 (en) * 2008-01-29 2009-07-30 Edge Systems Corporation Apparatus and method for treating the skin
US20090222023A1 (en) * 2008-02-29 2009-09-03 Emed, Inc. Microdermabrasion Treatment Heads
US20100035522A1 (en) * 2008-08-07 2010-02-11 Keiji Mase Blasting method and apparatus having abrasive recovery system, processing method of thin-film solar cell panel, and thin-film solar cell panel processed by the method
US7678120B2 (en) 1999-08-26 2010-03-16 Axia Medsciences, Llc Instruments and techniques for controlled removal of epidermal layers
US20110082415A1 (en) * 2008-01-29 2011-04-07 Edge Systems Corporation Devices, systems and methods for treating the skin using time-release substances
US20120058711A1 (en) * 2009-04-21 2012-03-08 Takenori Yoshizawa Blasting apparatus and method for blast processing
US9050133B1 (en) 2009-12-22 2015-06-09 Envy Medical, Inc. Skin treatment system with adjustable height wand
US9498610B2 (en) 2014-12-23 2016-11-22 Edge Systems Llc Devices and methods for treating the skin using a rollerball or a wicking member
US9566088B2 (en) 2006-03-29 2017-02-14 Edge Systems Llc Devices, systems and methods for treating the skin
US9833261B2 (en) 2008-08-22 2017-12-05 Envy Medical, Inc. Microdermabrasion system upgrade kit
US10172644B2 (en) 2006-03-29 2019-01-08 Edge Systems Llc Devices, systems and methods for treating the skin
US10179229B2 (en) 2014-12-23 2019-01-15 Edge Systems Llc Devices and methods for treating the skin using a porous member
US10238812B2 (en) 2013-03-15 2019-03-26 Edge Systems Llc Skin treatment systems and methods using needles
US10485983B1 (en) 2008-08-22 2019-11-26 Envy Medical, Inc. Microdermabrasion system with combination skin therapies
US10993743B2 (en) 2013-03-15 2021-05-04 Edge Systems Llc Devices, systems and methods for treating the skin
US11241357B2 (en) 2015-07-08 2022-02-08 Edge Systems Llc Devices, systems and methods for promoting hair growth
US11344996B2 (en) * 2018-11-04 2022-05-31 systeco GmbH Surface cleaning and engraving machine via a vacuum blasting process
USD1016615S1 (en) 2021-09-10 2024-03-05 Hydrafacial Llc Container for a skin treatment device
USD1042807S1 (en) 2021-10-11 2024-09-17 Hydrafacial Llc Skin treatment tip
USD1065551S1 (en) 2021-09-10 2025-03-04 Hydrafacial Llc Skin treatment device
US12295618B2 (en) 2020-01-06 2025-05-13 Hydrafacial Llc Skin treatment tool applicator tip
USD1084369S1 (en) 2023-02-10 2025-07-15 Hydrafacial Llc Skin treatment tip

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US2448316A (en) * 1945-08-24 1948-08-31 Lesavoy I Lawrence System for finishing plastic sheets
US2597434A (en) * 1948-12-27 1952-05-20 William H Mead Surface treating apparatus
US2810991A (en) * 1955-02-18 1957-10-29 William H Mead Abrasive blasting apparatus
GB839265A (en) * 1957-11-02 1960-06-29 Norman Ives Ashworth Improvements in abrasive blasting appliances
US3545996A (en) * 1969-02-25 1970-12-08 Zero Manufacturing Co Method and apparatus for producing a decorative effect on stainless steel and other surface

Cited By (98)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3999508A (en) * 1972-06-21 1976-12-28 U.S. Philips Corporation Apparatus for electrostatically coating bulb interiors
EP0005604A1 (en) * 1978-05-19 1979-11-28 Worldwide Blast Cleaning Limited A surface cleaning machine
EP0032161A1 (en) * 1978-05-19 1981-07-22 Worldwide Blast Cleaning Limited A surface cleaning machine
US4308819A (en) * 1980-08-11 1982-01-05 Commercial Resins Co. System for spraying fluidized powder circumferentially around a pipe joint
US4993200A (en) * 1986-03-11 1991-02-19 Kawasaki Steel Techno-Research Corp Pollution free blaster system and blaster head therefor
US5037432A (en) * 1987-11-27 1991-08-06 Lorenzo Molinari Adjustable apparatus for removing surface portions of human tissue
US6928930B1 (en) * 1995-05-04 2005-08-16 Man Roland Druckmaschinen Ag Device for cleaning printing cylinders
US5732631A (en) * 1995-06-06 1998-03-31 Man Roland Druckmaschinen Ag Method and device for cleaning a cylinder of a rotary printing machine
WO1997007933A1 (en) * 1995-08-25 1997-03-06 Ltc Americas Inc. Bolt head blaster
US5667430A (en) * 1995-08-25 1997-09-16 Ltc Americas Inc. Bolt head blaster
US5833521A (en) * 1996-12-27 1998-11-10 Ltc Americas, Inc. Air cushioned vacuum blast head
US6277128B1 (en) 1998-07-11 2001-08-21 J. Scott Muldner Skin abrasion treatment device
US6162232A (en) * 1999-03-18 2000-12-19 Shadduck; John H. Instruments and techniques for high-velocity fluid abrasion of epidermal layers with skin cooling
US6299620B1 (en) 1999-03-18 2001-10-09 Aq Technologies, Inc. Instruments and techniques for inducing neocollagenesis in skin treatments
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Also Published As

Publication number Publication date
DE2110697A1 (de) 1971-10-07
FR2084262A5 (enExample) 1971-12-17
DE2110697C3 (de) 1974-07-18
DE2110697B2 (de) 1973-08-09

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