US20140059798A1 - Vacuuming Device Comprising a Vacuum Cleaner and a Bag Filter - Google Patents

Vacuuming Device Comprising a Vacuum Cleaner and a Bag Filter Download PDF

Info

Publication number
US20140059798A1
US20140059798A1 US14/006,042 US201214006042A US2014059798A1 US 20140059798 A1 US20140059798 A1 US 20140059798A1 US 201214006042 A US201214006042 A US 201214006042A US 2014059798 A1 US2014059798 A1 US 2014059798A1
Authority
US
United States
Prior art keywords
filter bag
wall
receiving space
filter
areas
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.)
Abandoned
Application number
US14/006,042
Other languages
English (en)
Inventor
Ralf Sauer
Jan Schultink
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EUROFITTERS HOLDING NV
Eurofilters Holding NV
Original Assignee
EUROFITTERS HOLDING NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by EUROFITTERS HOLDING NV filed Critical EUROFITTERS HOLDING NV
Assigned to EUROFILTERS HOLDING N.V. reassignment EUROFILTERS HOLDING N.V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SAUER, RALF, SCHULTINK, JAN
Publication of US20140059798A1 publication Critical patent/US20140059798A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
    • A47L9/1409—Rigid filtering receptacles
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles

Definitions

  • the invention relates to vacuum cleaning apparatus comprising a vacuum cleaner and a filter bag which is formed as a non-woven fabric filter bag, as a disposable filter bag and as a flat bag with surface folds.
  • Filter bags in the form of disposable flat bags and made of a non-woven fabric are those filter bags that are nowadays most commonly used.
  • the advantage of non-woven fabric bags is the substantially higher dust absorption capacity of the filter bag, along with a high collection efficiency and longer service life.
  • the flat bag shape is the most widely spread shape for non-woven fabric bags as bags having this shape are very easy to manufacture.
  • the non-woven fabric material is very hard to fold permanently owing to the great resilience, so that the manufacture of more complex bag shapes, such as block bottom bags or other bag shapes having a bottom, is very complicated and expensive.
  • Rat bags as used in the present invention are filter bags whose filter bag wall comprised of two individual layers of a filter material with identical surface areas is formed such that the two individual layers are connected to each other only at their circumferential edges (the term identical surface area does not preclude, of course, that the two individual layers differ from each other by the fact that one of the layers includes an inlet opening).
  • connection of the individual layers may be realized by a welding seam or adhesive seam along the total circumference of the two individual layers.
  • one individual layer made of a filter material is folded about one of its axes of symmetry while the other, open circumferential edges of the so created two sub-layers are welded or bonded to each other (so-called tubular bag).
  • this type of manufacture requires three welding or bonding seams. Two of those seams then form the filter bag edge.
  • the third seam may equally form a filter bag edge or lie in one of the filter bag walls.
  • An individual filter material layer taken by itself may, in this design, consist of one or more layers which can be laminated, for instance.
  • Rat bags as used in the present invention may also comprise so-called gussets. These gussets may be fully unfoldable.
  • a flat bag having such gussets is shown, for instance, in DE 20 2005 000 917 U1 (see FIG. 1 with folded gussets, and FIG. 3 with unfolded gussets).
  • the gussets may be welded to sections of the circumferential edge.
  • Such a flat bag is shown in DE 10 2008 006 769 A1 (see FIG. 1 thereof).
  • fiat bags are two-dimensional structures immediately after the manufacture thereof, i.e. they have an internal volume prior to their use that is substantially equal to zero.
  • a filter bag with an internal volume that is substantially equal to zero is not necessarily a fiat bag within the meaning of the present invention, as bag shapes having a bottom, as described for instance in DE 20 2005 016 309 U1 or DE 20 2009 004 433 U1, are not flat bags because they are not formed of two individual layers having identical surface areas that are connected to each other only at their circumferential edges.
  • bag shapes that are already three-dimensional structures after their manufacture and, thus, have an internal volume different from zero, as are described for instance in WO 00/00269 (see FIGS. 27 and 28 thereof) and DE 10 2007 060 748 (see in particular FIG. 9 thereof), are not flat bags in accordance with the present invention.
  • a non-woven fabric bag in accordance with the present invention comprises a filter material of a non-woven fabric.
  • Aft-laid or wet-laid non-woven fabric, or an extruded nonwoven fabric, in particular a melt-spun micro-fiber spunbonded non-woven fabric (melt-blown non-woven fabric) or filament spunbonded non-woven fabric (spunbond) may be used as non-woven fabric material.
  • nanofiber layers may be provided.
  • the differentiation between wet-laid non-woven fabrics, respectively nonwovens, and conventional wet-laid paper is made in accordance with the definition provided below, which is also used by EDANA (International Association Serving the Nonwovens and Related Industries). Therefore, a conventional (filter) paper is not a non-woven fabric.
  • the non-woven fabric may include staple fibers or endless fibers. With regard to the manufacturing is is also possible to provide several layers of staple fibers and endless fibers which are bonded to exactly one layer of nonwoven fabric.
  • the filter material may also be a laminate made of several nonwoven fabric layers, e.g. filament spunbonded non-woven fabric and melt-blown nonwoven fabric (SMS, SMS or Sn ⁇ MS). Such a laminate may be laminated or also calendered by means of a hot adhesive. The layer of melt-blown nonwoven fabric may be creped.
  • nonwoven fabric is used according to the definition in the ISO standard ISO 9092:1988, respectively standard EN 29092.
  • fibrous web or nonwoven and non-woven fabric are differentiated as defined below, and should be understood in accordance with this definition also within the limits of the present invention.
  • fibers and/or filaments are used to produce a nonwoven fabric.
  • the loose and still non-connected fibers and/or filaments are called nonwoven or fibrous web (web).
  • nonwoven bonding step a non-woven fabric is finally created from such a fibrous web, the tenacity of which is sufficient, for instance, to be wound to rollers.
  • a non-woven fabric becomes self-supporting by the bonding.
  • the filter bag wall comprises at least one surface fold.
  • the design of such surface folds is shown, for instance, in the European patent application 10163463.2 (see in particular FIG. 10 a and FIG. 10 b , respectively FIG. 11 a and FIG. 11 b thereof). If the filter bag wall comprises a plurality of surface folds this material is also called a pleated filter material. Such pleated filter bag was are shown in the European patent application 10002964.4.
  • FIG. 1 and FIG. 2 show a cross-section of a filter bag comprising a wall with two surface folds. Such surface folds enlarge the filter surface of the filter bag so that a higher dust absorption capacity of the filter bag, along with a high collection efficiency and longer service life is obtained (as compared with a filter bag having same outer dimensions and without surface folds).
  • FIG. 1 shows a filter bag 1 comprising a filter bag wall 10 with two surface folds 11 in the form of so-called dovetail folds.
  • the figure shows a cross-section of the filter bag through the filter bag center.
  • the longitudinal axes of the surface folds accordingly extend in one plane which, again, extends perpendicular to the plane of projection, and the surface folds extend at theft longitudinal ends into the welding seams of the filter bag which extend in parallel to the plane of projection and are positioned in front of and behind the plane of projection.
  • the strongest unfolding of the surface folds is in the middle thereof.
  • the filter bag is here shown in a state in which the surface folds are already unfolded to some extent.
  • Each dovetail fold 11 includes areas 11 a positioned within the surface area of the filter bag wall 12 , and areas 11 b projecting over the surface area of the filter bag wall 12 . These areas lib are not yet unfolded when inserting the filter bag into the vacuum cleaner for the first time.
  • FIG. 2 shows a filter bag 2 comprising a filter bag wall 20 with two surface folds 21 in the form of so-called triangular folds.
  • the figure equally shows a cross-section of the filter bag through the filter bag center.
  • the longitudinal axes of the surface folds accordingly extend in one plane which, again, extends perpendicular to the plane of projection, and the surface folds extend at their longitudinal ends into the welding seams of the filter bag which extend in parallel to the plane of projection and are positioned in front of and behind the plane of projection.
  • the strongest unfolding of the surface folds is in the middle thereof.
  • the filter bag is shown in a state in which the surface folds are already unfolded to some extent.
  • Each triangular fold 21 includes areas 21 a positioned within the surface area of the filter bag wall 22 , and areas 21 b projecting over the surface area of the filter bag wall 22 . These areas 21 b are not yet unfolded when inserting the filter bag into the vacuum cleaner for the first time.
  • the second filter bag wall of the filter bag illustrated in FIG. 1 and FIG. 2 does not have surface folds.
  • this second filter bag wall may comprise one or more surface folds.
  • FIG. 1 and FIG. 2 surface folds having different shapes are feasible, too. It should not be regarded as a limitation that the surface folds in the embodiments of FIG. 1 and FIG. 2 extend perpendicular to a bag edge. Of course, the surface folds may also extend at an angle to the bag edges.
  • Vacuum cleaners according to the prior art have filter bag receiving spaces with rigid walls.
  • these walls comprise spacer devices in the form of ribs, respectively rib-shaped sections to prevent the filter bag from bearing with its filter surface against the wall of the filter bag receiving space, thus reducing the effective filter effect.
  • a vacuum-cleaning apparatus comprising a vacuum cleaner and a filter bag according to patent claim 1 , viz. by an apparatus in which the filter bag is formed as a non-woven fabric filter bag, as a disposable filter bag and as a flat bag having a first filter bag wall and a second filter bag wall in which the filter bag has at least one surface fold, wherein each surface fold comprises areas that are positioned within the surface area of the filter bag wall, and areas that project over the surface area of the filter bag wall and can be unfolded during the vacuum-cleaning, in which the vacuum cleaner comprises a filter bag receiving space with rigid walls, wherein on the walls of the filter bag receiving space at least a first spacer device is provided to space the areas of at least one surface fold positioned within the surface area of the filter bag wall away from the wall of the filter bag receiving space, and at least a second spacer device is provided to space the unfolded areas of the at least one surface fold away from the wall of the filter bag receiving space.
  • the surface fold can unfold in such a way that the major part of the surface area of the filter material forming the surface fold becomes exposed to a flow.
  • the effective filter surface of the filter bag is enlarged (as opposed to the use in a conventional vacuum cleaner) so that the dust absorption capacity of the filter bag, along with a higher collection efficiency and higher service life, can be further increased as compared to this conventional apparatus.
  • each first and each second spacer device may be formed as a web, a web-shaped section, a bow, a bow-shaped section, a rib, a rib-shaped section and/or a lug.
  • This further development allows a comparatively uniform, optimal flow exposure of the filter surface of the total filter bag inside the filter bag receiving space of the vacuum cleaner.
  • each first and each second spacer device may be formed integrally with the wall of the filter bag receiving space.
  • the filter bag receiving space of the vacuum cleaner may be manufactured by an injection molding process. This ensures a simple and inexpensive manufacture of the filter bag receiving space.
  • all first and all second spacer devices may also be formed as a cage-shaped insert which is provided in the filter bag receiving space.
  • the cage-shaped insert may be formed to be removable from the filter bag receiving space and insertable into the filter bag receiving space.
  • the filter bag may comprise several, preferably three to seven surface folds in the first layer of the filter bag wall and/or several, preferably three to seven surface folds in the second layer of the filter bag wall.
  • FIG. 1 shows a filter bag according to the prior art with two surface folds in the form of dovetail folds
  • FIG. 2 shows a filter bag according to the prior art with two surface folds in the form of triangular folds
  • FIG. 3 a first embodiment of the present invention.
  • FIG. 4 a first embodiment of the present invention.
  • FIG. 3 shows a first embodiment of the present invention. This embodiment is particularly suited for a filter bag with dovetail folds as illustrated in FIG. 1 .
  • FIG. 3 shows the filter bag with fully unfolded surface folds 31 .
  • the areas 31 a which are positioned within the surface area of the filter bag wall 32 , are spaced away by a first spacer device 35 from the wall of the filter bag receiving space 33 .
  • the areas 31 b which project over the surface area of the filter bag wall 32 , are spaced away by a second spacer device 36 from the wall of the filter bag receiving space 33 .
  • the height of the first and second spacer devices depends on both the size of the surface fold and the shape of the filter bag receiving space. If the filter bag receiving space has, in accordance with the embodiment of FIG. 3 , a shape that is similar to the shape of the filter bag in operation the spacer devices may be formed smaller than in a case where the filter bag space is substantially cuboid-shaped, as is common in the prior art. In the latter case, in particular if the filter bag comprises several surface folds, the first spacer devices for the various surface folds will also have a different size. The same applies to the second spacer devices (see in this respect the embodiment discussed in connection with FIG. 4 ).
  • the first and second spacer devices are formed as web-shaped sections which extend section-wise along the surface fold.
  • the first and the second spacer devices are formed integrally with the wall of the filter bag receiving space 33 . This allows a simple production of the filter bag receiving space, for instance by an injection molding process.
  • first and second spacer devices may also be formed as ribs, a rib-shaped section and/or a lug.
  • FIG. 4 shows a second embodiment of the present invention. This embodiment is particularly suited for a filter bag with triangular folds as illustrated in FIG. 2 .
  • FIG. 4 shows the filter bag with fully unfolded surface folds 41 .
  • the areas 41 a which are positioned within the surface area of the filter bag wall 42 , are spaced away by a first spacer device 45 from the wall of the filter bag receiving space.
  • the areas 41 b which project over the surface area of the filter bag wall 42 , are spaced away by a second spacer device 46 from the wall of the filter bag receiving space.
  • the first and second spacer devices are provided in the form of a cage.
  • the outer shape of this cage is predefined by the second spacer devices spacing away the areas of the surface folds that extend beyond the surface area of the filter bag wall.
  • all bars forming the second spacer devices run substantially parallel to each other and substantially parallel to the surface folds of the filter bags if these are inserted into the cage as intended. Equally substantially parallel to these bars run the bars that form the first spacer devices. These bars reproduce the shape of the surface areas of the filter bag and, accordingly, extend into the interior of the cage formed by the second spacer devices.
  • cage bars which run at an angle, in particular perpendicular to the bars forming the first and second spacer devices. Such bars running at an angle serve to stabilize specific areas of the filter bag, e.g. the area of the net opening.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Filtering Materials (AREA)
US14/006,042 2011-03-22 2012-03-20 Vacuuming Device Comprising a Vacuum Cleaner and a Bag Filter Abandoned US20140059798A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11002354.6A EP2502535B1 (de) 2011-03-22 2011-03-22 Vorrichtung zum Staubsaugen mit Staubsaugergerät und Filterbeutel
EP11002354.6 2011-03-22
PCT/EP2012/001225 WO2012126612A1 (de) 2011-03-22 2012-03-20 Vorrichtung zum staubsaugen mit staubsaugergerät und filterbeutel

Publications (1)

Publication Number Publication Date
US20140059798A1 true US20140059798A1 (en) 2014-03-06

Family

ID=44263277

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/006,042 Abandoned US20140059798A1 (en) 2011-03-22 2012-03-20 Vacuuming Device Comprising a Vacuum Cleaner and a Bag Filter

Country Status (11)

Country Link
US (1) US20140059798A1 (zh)
EP (1) EP2502535B1 (zh)
JP (1) JP5758043B2 (zh)
CN (1) CN103547200B (zh)
AU (1) AU2012230636C1 (zh)
BR (1) BR112013024100A2 (zh)
DK (1) DK2502535T3 (zh)
ES (1) ES2445747T3 (zh)
PL (1) PL2502535T3 (zh)
RU (1) RU2553198C2 (zh)
WO (1) WO2012126612A1 (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2926705A1 (de) 2014-04-04 2015-10-07 Eurofilters Holding N.V. Vorrichtung zum Staubsaugen mit einem Kesselstaubsauger
EP2926706B1 (de) 2014-04-04 2024-06-05 Eurofilters Holding N.V. Vorrichtung zum Staubsaugen
WO2018054501A1 (en) * 2016-09-26 2018-03-29 Aktiebolaget Electrolux Vacuum cleaner with improved air flow
ES2904692T3 (es) * 2017-01-31 2022-04-05 Eurofilters Holding Nv Aspiradora de suelo
AU2019311160A1 (en) * 2018-07-27 2021-02-18 Abec, Inc. Disposable containers and reaction systems

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5961676A (en) * 1997-06-09 1999-10-05 The Hoover Company Hard bag door with air directing arrangement
US6574827B2 (en) * 2000-01-31 2003-06-10 Matsushita Electric Industrial Co., Ltd. Electric vacuum cleaner having increased stability and resistance against inadvertant falling over of the vacuum cleaner
US20060144024A1 (en) * 2002-12-06 2006-07-06 Ralf Sauer Nonwoven layer for a filter and filter medium

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS444625Y1 (zh) * 1965-12-02 1969-02-19
JPS4621812Y1 (zh) * 1967-07-21 1971-07-28
JPS5515786Y2 (zh) * 1974-08-02 1980-04-12
JPS5121263A (en) * 1974-08-14 1976-02-20 Ito Shoji Ryutaino konnyusochi
JPS56132926A (en) * 1980-06-20 1981-10-17 Hitachi Ltd Electric cleaner
JPS58190417A (ja) * 1983-03-11 1983-11-07 株式会社日立製作所 電気掃除機
DE8506818U1 (de) * 1985-03-08 1986-07-03 Siemens Ag, 1000 Berlin Und 8000 Muenchen Filteranordnung in einem Staubsauger
JP2503409Y2 (ja) * 1986-11-07 1996-07-03 アース製薬 株式会社 電気掃除機用集塵袋
JPH10276944A (ja) * 1997-04-07 1998-10-20 Toru Obayashi 集塵力が落ちにくい掃除機
JPH11206652A (ja) * 1998-01-22 1999-08-03 Nexta Corp 電気掃除機用集塵袋
DE69910660T2 (de) * 1998-05-11 2004-06-17 Airflo Europe N.V. Staubfilterbeutel für einen Staubsauger oder Filter, und Verfahren zum Filtern eines Gases
CA2335053A1 (en) * 1998-06-30 2000-01-06 Otmar Kohler Folded filter
DE202005000917U1 (de) 2005-01-20 2005-03-24 Branofilter Gmbh Staubfilterbeutel
DE202005016309U1 (de) 2005-10-18 2005-12-15 Wolf Gmbh Staubsaugerbeutel
DE102007060748A1 (de) 2007-12-17 2009-06-25 Vorwerk & Co. Interholding Gmbh Verfahren zur Herstellung eines Filterbeutels
DE102008006769B4 (de) 2008-01-30 2013-08-08 Arwed Löseke Papierverarbeitung und Druckerei GmbH Verfahren zur Herstellung eines Staubfilterbeutels mit Seitenfalten
DE202009004433U1 (de) 2009-03-26 2009-06-04 Branofilter Gmbh Blockbodenbeutel mit zusätzlicher Schweißnaht und Sollfaltlinien
JP2012095918A (ja) * 2010-11-04 2012-05-24 Makita Corp 集塵袋

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5961676A (en) * 1997-06-09 1999-10-05 The Hoover Company Hard bag door with air directing arrangement
US6574827B2 (en) * 2000-01-31 2003-06-10 Matsushita Electric Industrial Co., Ltd. Electric vacuum cleaner having increased stability and resistance against inadvertant falling over of the vacuum cleaner
US20060144024A1 (en) * 2002-12-06 2006-07-06 Ralf Sauer Nonwoven layer for a filter and filter medium

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP 56-132926 English Mach Translation, att'd as pdf. *

Also Published As

Publication number Publication date
RU2553198C2 (ru) 2015-06-10
CN103547200A (zh) 2014-01-29
BR112013024100A2 (pt) 2016-12-06
EP2502535A1 (de) 2012-09-26
CN103547200B (zh) 2015-11-25
NZ615493A (en) 2016-04-29
AU2012230636A1 (en) 2013-10-03
JP2014512212A (ja) 2014-05-22
DK2502535T3 (da) 2014-01-27
ES2445747T3 (es) 2014-03-05
PL2502535T3 (pl) 2014-05-30
JP5758043B2 (ja) 2015-08-05
RU2013142198A (ru) 2015-04-27
WO2012126612A1 (de) 2012-09-27
EP2502535B1 (de) 2013-11-20
AU2012230636C1 (en) 2015-05-07
AU2012230636B2 (en) 2015-02-12

Similar Documents

Publication Publication Date Title
DK2366319T3 (en) Vacuum cleaner filter bag
US8372174B2 (en) Vacuum filter cleaner bag
AU2012230636B2 (en) Vacuuming device comprising a vacuum cleaner and a bag filter
DK2613682T3 (en) A device for vacuum cleaning apparatus with the vacuum cleaner and filter bag
CN106455885B (zh) 用于立式吸尘器的吸尘器过滤袋
US8974566B2 (en) Vacuum cleaner filter bag having a side fold
DK2452603T3 (en) Folded vacuum cleaner filter bag
NZ615493B2 (en) Vacuuming device comprising a vacuum cleaner and a bag filter
DK2502538T3 (en) Vacuum cleaner filter bag with filterposevægforbindelsesindretning
CN103648347A (zh) 生态高效的真空清洁设备
NZ615445B2 (en) Ecologically efficient vacuuming device

Legal Events

Date Code Title Description
AS Assignment

Owner name: EUROFILTERS HOLDING N.V., BELGIUM

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SAUER, RALF;SCHULTINK, JAN;REEL/FRAME:032054/0936

Effective date: 20130926

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION