US2224202A - Suction cleaner - Google Patents

Suction cleaner Download PDF

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Publication number
US2224202A
US2224202A US146579A US14657937A US2224202A US 2224202 A US2224202 A US 2224202A US 146579 A US146579 A US 146579A US 14657937 A US14657937 A US 14657937A US 2224202 A US2224202 A US 2224202A
Authority
US
United States
Prior art keywords
dirt
chassis
nozzle
air
casing
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
US146579A
Other languages
English (en)
Inventor
Donald G Smellie
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.)
Hoover Co
Original Assignee
Hoover Co
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 Hoover Co filed Critical Hoover Co
Priority to US146579A priority Critical patent/US2224202A/en
Priority to FR840966D priority patent/FR840966A/fr
Priority to DE1938H0156064 priority patent/DE702145C/de
Application granted granted Critical
Publication of US2224202A publication Critical patent/US2224202A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1658—Construction of outlets
    • A47L9/1666—Construction of outlets with filtering means
    • A47L9/1675—Construction of outlets with filtering means movable, revolving or rotary
    • 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
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/14—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum cleaning by blowing-off, also combined with suction cleaning
    • 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
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/28—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle
    • 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
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/28—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle
    • A47L5/34—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle with height adjustment of nozzles or dust-loosening tools
    • 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
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1683—Dust collecting chambers; Dust collecting 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
    • A47L9/32—Handles
    • A47L9/325—Handles for wheeled suction cleaners with steering handle
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/03—Vacuum cleaner

Definitions

  • the present invention relates to suction cleaners in general, and more particularly to a new and improved suction cleaner construction in which the usual dust bag is not necessary. More specifically the invention comprises what is commonly known as a 'closed circuit suction cleaner.
  • a further object is to provide a new and improved closed circuit suction cleaner in which a filtered escape or leak is provided in air passagesin the chassis to remove the foreign matter from the air which escapes from the cleaner circuit upon being replaced by additional air from the exterior atmosphere.
  • Another object is to provide a mechanical separator to remove' the suspended foreign matter from the cleaning air and discharge 'it into the dirt receptacle.
  • Fig. l is a side elevation partly in section of an embodiment of the present invention.
  • Fig. 2 is a bottom View of the cleaner shown in Fig. 1;
  • Fig. 3 isa section along the line 3-3 of Fig. 2;A
  • Fig. 4 is a fragmentary section along the line 4--4 of Fig. l.
  • Fig. 5 is an elevation partly in section showing the dirt receptacle partially removed from the cleaner chassis and the cover partly,7 opened with respect to the dirt receptacle.
  • the embodiment of the'invention shown in the drawings comprises a chassis Iii, including a nozzle casing I I and is mounted on iront wheels I2 and rear casters I3 connected to a nozzle adjusting means i4 through the use of which the rear casters can be raised and lowered in order to vary the relation of the cleaner nozzle to the surface 9 undergoing cleaning.
  • a handle l5 provided with a bail I6 is pivoted to the chassis at 22 and has a handle positioning lever il cooperating with a pin I8 on the chassis I0 to hold the handle in the desired positions.
  • Removably secured to the top of the chassis I0 is a dirtJ receptacle provided with a cover 2l hereinafter described in detail.
  • Nozzle 25 is interiorly connected by a passageway 3d extending centrally of the chassis I0 and terminating in an elongated slot in the top wall 36 of the chassis for communication l" with the dirt receptacle 20.
  • a pair of channels or conduits 38 communicate with thefront and rear nozzles 30 and 3
  • Each channel is provided with a plurality of apertures 4I in the bottom wall 42 of the chassis which are covered with a filter member i3 carried by a plate 44 pivoted to the bottom of the chassisat 45 and locked in position by a spring lock 46.
  • the apertures 4I and filters 43 provide a filtered leak or escape for the air that has been replaced by additional air from the exterior atmosphere.
  • a motor housing 5G Mounted on the bottom wall d'2 of the chassis I0 by means of screws 49 is a motor housing 5G extending upwardly in the chamber d and through an aperture 5I in the upper chassis wall 35 into the dirt receptacle 20.
  • the housing 5l) has a plurality of spaced openings 52 adjacent the motor brushes, and apertures 54 in the bottom housing plate ⁇ 53 communicating with openings 55 provided in the lower chassis wall d2. These openings provide a path for air to pass through the housing to cool the motor 56.
  • a suctioncreating fan 6I Carried by the motor shaft is a suctioncreating fan 6I while immediately above the fan, and also carried by the shaft, is a dirt separator 62 through which the air must pass in response to the dirt created by the suction-creating fan SI.
  • a frusto-conical plate 63 separates the suction fan from the separator and provides a central opening 64, which is in fact, the eye of the fan chamber 65, and through which the cleaningr 50 air may pass from the dust chamber 6B into the fan chamber 65.
  • Plate 63 is providedV at its pe. riphery with an upwardly extending circular flange El which cooperates with a circular groove t8 in the surrounding edge of the dirt receptacle 55 by the suction-creating fan 6
  • the dirt receptacle 20 comprises a bottom wall 10 and vertical annularouter and inner walls 1
  • is dome-shaped and is hinged at 14 to the outer wall 1
  • Suitable latch means 16 lock the cover 2
  • An elongated slot 18 is provided in the bottom wall 10 and is in register with the slot 35 in the chassis top wall 36.
  • a baille plate 810 Disposed in chordal relation with the outer wall 1
  • and baille plate 80 represente the annular dirt chamber 66.
  • the inner wall 12 of the dirt receptacle cooperates with the motor housing 50 to define the fan chamber 65.
  • the chassis I0 is provided with an upwardly extending annular flange 85 which defines a recess 86 for the reception of the dust receptacle 28.
  • a hook 81 is pivoted to the outer receptacle wall 1
  • is provided with a gasket 89 and 90 respectively to prevent leakage of air and to cushion the dirt receptacle in the chassis l0.
  • the surface covering 9 has been lifted by the suction within the nozzle proper 25 into contact with its lips 26 and 21, and the air in the front and rear nozzles 30 and 3
  • a certain amount of air from the outer atmosphere will leak into the nozzle 25 under its end walls and, in most cases, through the floor covering undergoing cleaning, and will therefore increase the volume of air present within the cleaner unless a corresponding volume of air is displaced therefrom. Ihis volume of air is displaced by passing through the openings 4
  • each .filter 443 maybe replaced by manipulating the latch 46 after which it is a simple matter to remove the lter.
  • the apertures 52 may be provided with lters.
  • a suction cleaner comprising a chassis having a nozzle, means in; ⁇ said ⁇ chassis defining an inlet passageway communicating with said nozzle, a motor mounted on said chassis, dirt separating means operated by said motor, a casing removably mounted on said chassis, said casing having a re-entrant chamber for enclosing said motor, said casing being removable from said chassis by longitudinal movement with respect to said motor, means in said casing denin'g a suction passageway communicating with said inlet passageway, and means in said casing dening a dirt chamber for the reception 4of dirt discharged by said separating means.
  • a suction cleaner comprising a Chassis havi-ng a nozzle for contacting the surface to be cleaned, means in said chassis defining an inlet passageway communicating with said nozzle, a motor mounted on said chassis, dirt separating means operated by said motor, a casing removably mounted on said chassis and embracing said motor, means in said casing deining a suction passageway communicating with said inlet passageway, a cover pivotally mounted on said casing and extending to said separating means and cooperating with said suction passageway means to convey dirt-laden air to said dirt-separating means, and means in said casing dening a dirt chamber for the reception of' dirt discharged by said separator means.
  • a suction cleaner comprising a chassis having a nozzle for contacting the surface to be cleaned, means in said chassis dening an inlet passageway communicating with said nozzle, a motor mounted on said chassis, dirt separating means operated by said motor, a casing removably mounted on said chassis and embracing said motor, said casing having means dening a suction passageway for conveying dirt-laden air from said inlet passageway to said separator means, and means in said casing to define a dirt Isaid passages communicating with said chamber for the reception of dirt discharged by said lseparator means, said casing being arranged around said motor for removal from Said casing by longitudinal movement with respect to said motor.
  • a suction cleaner comprising a casing having a nozzle and an air passage communicating with said nozzle, a motor-driven dirt-separating unit mounted on said casing, a dirt receptacle surrounding said dirt-separating unit and forming a downwardly opening discharge passage for the air delivered from said dirt-separating unit, and a cover tting over said dirt receptacle and forming a chamber for the separating unit and communicating with said nozzle through said firstmentioned air passage.
  • a suction cleaner comprising a casing having a nozzleand separate air passages communicating with said nozzle, a motor-driven fan and dirt-separating unit mounted on said casing and surmounted by a dirt-separating member, an annular dirt receptacle surrounding said unit to form a fan chamber connected at its lower end with one of said passages communicating with .said nozzle, and a cover extending over said dirt receptacle and forming a chamber for said dirtseparating member connected with the other of nozzle.
  • a suction cleaner comprising a casing having a nozzle and an air pasage communicating with said nozzle, a motor-driven fan and dirtseparatingunit mounted vertically upon said casing with said dirt-separating member above said fan, an annular dirt receptacle surrounding said unit with its innermost wall forming a ian chamber having an inlet opening at its upper end an a discharge outlet at its lower end, and a removable cover extending over said dirt receptacle and forming a chamber for said dirt-separating member and a passage communicating with said first-mentioned passage.
  • a suction cleaner comprising a casing having a nozzle and an air inlet passage communicating with said nozzle, a motor and fan unit mounted-onsaid casing, a dirt-separating member mounted at the upper end of said unit, a dirt receptacle removably supported upon said chassis having an inner annular wall surrounding said motor and fan unit to form a fan chamber and an outlet passage therefrom, and a cover for said receptacle enclosing said dirt-separating member and communicating with said inlet passage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
US146579A 1937-06-05 1937-06-05 Suction cleaner Expired - Lifetime US2224202A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US146579A US2224202A (en) 1937-06-05 1937-06-05 Suction cleaner
FR840966D FR840966A (fr) 1937-06-05 1938-06-03 Perfectionnements aux appareils de nettoyage par aspiration
DE1938H0156064 DE702145C (de) 1937-06-05 1938-06-04 Beutelloser Staubsauger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US146579A US2224202A (en) 1937-06-05 1937-06-05 Suction cleaner

Publications (1)

Publication Number Publication Date
US2224202A true US2224202A (en) 1940-12-10

Family

ID=22518033

Family Applications (1)

Application Number Title Priority Date Filing Date
US146579A Expired - Lifetime US2224202A (en) 1937-06-05 1937-06-05 Suction cleaner

Country Status (3)

Country Link
US (1) US2224202A (fr)
DE (1) DE702145C (fr)
FR (1) FR840966A (fr)

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415372A (en) * 1945-06-16 1947-02-04 B F Sturtevant Co Sweeper
US2744678A (en) * 1952-05-20 1956-05-08 Birtman Electric Co Vacuum cleaner suction device
US3004279A (en) * 1958-02-26 1961-10-17 Ringer Karl Mobile vacuum cleaning machine for streets, airport runways and the like
US3257681A (en) * 1964-04-13 1966-06-28 Jack V Miller Vacuum cleaners
US4884315A (en) * 1987-12-10 1989-12-05 Ehnert Richard E Vacuum cleaner having circuitous flow
US5168599A (en) * 1989-12-01 1992-12-08 Williams William H Wet and/or dry vacuum cleaning unit
US5752997A (en) * 1995-05-05 1998-05-19 Proair Gmbh Geratebau Wet cleaning apparatus
US6108863A (en) * 1999-06-10 2000-08-29 Lin; Yao-Chang Vacuum cleaner with dual blowing/suction function
US6237188B1 (en) * 1997-12-26 2001-05-29 Toshiba Tec Kabushiki Kaisha Suction port body for vacuum-cleaner and vacuum-cleaner having the same
US20040045118A1 (en) * 2002-09-06 2004-03-11 Wydra Larry D. Fluid recovery device
US20080034516A1 (en) * 2006-08-10 2008-02-14 Andreas Stihl Ag & Co. Kg Walk-Behind Sweeper
US7555812B1 (en) * 2005-02-04 2009-07-07 Pinney Craig A Brushless vacuum cleaner
US20120222263A1 (en) * 2011-03-03 2012-09-06 G.B.D. Corp. Suction motor and fan assembly housing construction for a surface cleaning apparatus
US20130091658A1 (en) * 2011-10-12 2013-04-18 Black & Decker Inc. Vacuum cleaner
US8646149B2 (en) 2011-03-03 2014-02-11 G.B.D. Corp. Filter housing construction for a surface cleaning apparatus
US8739357B2 (en) 2011-03-03 2014-06-03 G.B.D. Corp Filter construction for a surface cleaning apparatus
US8739359B2 (en) 2011-03-03 2014-06-03 G.B.D. Corp. Configuration of a surface cleaning apparatus
US8763202B2 (en) 2011-03-03 2014-07-01 G.B.D. Corp. Cyclone chamber and dirt collection assembly for a surface cleaning apparatus
US8769767B2 (en) 2011-03-03 2014-07-08 G.B.D. Corp. Removable cyclone chamber and dirt collection assembly for a surface cleaning apparatus
US8813306B2 (en) 2011-03-03 2014-08-26 G.B.D. Corp. Openable side compartments for a surface cleaning apparatus
US8869345B2 (en) 2011-03-03 2014-10-28 G.B.D. Corp. Canister vacuum cleaner
US8973212B2 (en) 2011-03-03 2015-03-10 G.B.D. Corp. Filter housing construction for a surface cleaning apparatus
US8973214B2 (en) 2011-03-03 2015-03-10 G.B.D. Corp. Cyclone chamber and dirt collection assembly for a surface cleaning apparatus
US8978198B2 (en) 2011-03-03 2015-03-17 G.B.D. Corp. Filter housing for a surface cleaning apparatus
US9101252B2 (en) 2011-03-03 2015-08-11 G.B.D. Corp. Configuration of a surface cleaning apparatus
US10071328B2 (en) 2014-10-22 2018-09-11 Dyson Technology Limited Apparatus for separating particles from a fluid
US10143346B2 (en) 2014-10-22 2018-12-04 Dyson Technology Limited Separator for removing dirt particles from an airflow
US10555651B2 (en) 2014-10-22 2020-02-11 Dyson Technology Limited Apparatus for separating particles from an airflow
US11365521B2 (en) * 2015-06-04 2022-06-21 Stephen Jones Pavement joint cleaning system
US20240033754A1 (en) * 2023-05-24 2024-02-01 Panior Inc Multifunctional cleaning machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL58963C (fr) * 1941-06-13
CA1264002A (fr) * 1985-09-05 1989-12-27 David P. Garner Dispositif nettoyeur de surfaces

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415372A (en) * 1945-06-16 1947-02-04 B F Sturtevant Co Sweeper
US2744678A (en) * 1952-05-20 1956-05-08 Birtman Electric Co Vacuum cleaner suction device
US3004279A (en) * 1958-02-26 1961-10-17 Ringer Karl Mobile vacuum cleaning machine for streets, airport runways and the like
US3257681A (en) * 1964-04-13 1966-06-28 Jack V Miller Vacuum cleaners
US4884315A (en) * 1987-12-10 1989-12-05 Ehnert Richard E Vacuum cleaner having circuitous flow
US5168599A (en) * 1989-12-01 1992-12-08 Williams William H Wet and/or dry vacuum cleaning unit
US5752997A (en) * 1995-05-05 1998-05-19 Proair Gmbh Geratebau Wet cleaning apparatus
US6237188B1 (en) * 1997-12-26 2001-05-29 Toshiba Tec Kabushiki Kaisha Suction port body for vacuum-cleaner and vacuum-cleaner having the same
US6108863A (en) * 1999-06-10 2000-08-29 Lin; Yao-Chang Vacuum cleaner with dual blowing/suction function
US20040045118A1 (en) * 2002-09-06 2004-03-11 Wydra Larry D. Fluid recovery device
US7059013B2 (en) * 2002-09-06 2006-06-13 Tennant Company Fluid recovery device
US7555812B1 (en) * 2005-02-04 2009-07-07 Pinney Craig A Brushless vacuum cleaner
US20080034516A1 (en) * 2006-08-10 2008-02-14 Andreas Stihl Ag & Co. Kg Walk-Behind Sweeper
US8646149B2 (en) 2011-03-03 2014-02-11 G.B.D. Corp. Filter housing construction for a surface cleaning apparatus
US8869345B2 (en) 2011-03-03 2014-10-28 G.B.D. Corp. Canister vacuum cleaner
US8528160B2 (en) * 2011-03-03 2013-09-10 G.B.D. Corp. Suction motor and fan assembly housing construction for a surface cleaning apparatus
US20120222263A1 (en) * 2011-03-03 2012-09-06 G.B.D. Corp. Suction motor and fan assembly housing construction for a surface cleaning apparatus
US8739357B2 (en) 2011-03-03 2014-06-03 G.B.D. Corp Filter construction for a surface cleaning apparatus
US8739359B2 (en) 2011-03-03 2014-06-03 G.B.D. Corp. Configuration of a surface cleaning apparatus
US8763202B2 (en) 2011-03-03 2014-07-01 G.B.D. Corp. Cyclone chamber and dirt collection assembly for a surface cleaning apparatus
US8769767B2 (en) 2011-03-03 2014-07-08 G.B.D. Corp. Removable cyclone chamber and dirt collection assembly for a surface cleaning apparatus
US8813306B2 (en) 2011-03-03 2014-08-26 G.B.D. Corp. Openable side compartments for a surface cleaning apparatus
US9101252B2 (en) 2011-03-03 2015-08-11 G.B.D. Corp. Configuration of a surface cleaning apparatus
US8978198B2 (en) 2011-03-03 2015-03-17 G.B.D. Corp. Filter housing for a surface cleaning apparatus
US8973212B2 (en) 2011-03-03 2015-03-10 G.B.D. Corp. Filter housing construction for a surface cleaning apparatus
US8973214B2 (en) 2011-03-03 2015-03-10 G.B.D. Corp. Cyclone chamber and dirt collection assembly for a surface cleaning apparatus
US8945258B2 (en) * 2011-10-12 2015-02-03 Black & Decker Inc. Vacuum cleaner
US20130091658A1 (en) * 2011-10-12 2013-04-18 Black & Decker Inc. Vacuum cleaner
US10071328B2 (en) 2014-10-22 2018-09-11 Dyson Technology Limited Apparatus for separating particles from a fluid
US10143346B2 (en) 2014-10-22 2018-12-04 Dyson Technology Limited Separator for removing dirt particles from an airflow
US10555651B2 (en) 2014-10-22 2020-02-11 Dyson Technology Limited Apparatus for separating particles from an airflow
US11365521B2 (en) * 2015-06-04 2022-06-21 Stephen Jones Pavement joint cleaning system
US20240033754A1 (en) * 2023-05-24 2024-02-01 Panior Inc Multifunctional cleaning machine

Also Published As

Publication number Publication date
DE702145C (de) 1941-01-31
FR840966A (fr) 1939-05-08

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