WO2008070967A1 - Appareil de nettoyage de surfaces à enrouleur de bretelle - Google Patents

Appareil de nettoyage de surfaces à enrouleur de bretelle Download PDF

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Publication number
WO2008070967A1
WO2008070967A1 PCT/CA2007/002209 CA2007002209W WO2008070967A1 WO 2008070967 A1 WO2008070967 A1 WO 2008070967A1 CA 2007002209 W CA2007002209 W CA 2007002209W WO 2008070967 A1 WO2008070967 A1 WO 2008070967A1
Authority
WO
WIPO (PCT)
Prior art keywords
surface cleaning
cleaning apparatus
vacuum cleaner
shoulder strap
reel
Prior art date
Application number
PCT/CA2007/002209
Other languages
English (en)
Inventor
Wayne E. Conrad
Original Assignee
Gbd Corp.
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 Gbd Corp. filed Critical Gbd Corp.
Publication of WO2008070967A1 publication Critical patent/WO2008070967A1/fr

Links

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
    • 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
    • A47L5/32—Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle with means for connecting a hose
    • 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
    • A47L5/225—Convertible suction cleaners, i.e. convertible between different types thereof, e.g. from upright suction cleaners to sledge-type 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
    • A47L9/009—Carrying-vehicles; Arrangements of trollies or wheels; Means for avoiding mechanical obstacles

Definitions

  • the invention relates to surface cleaning apparatus, such as vacuum cleaners, wet/dry vacuum cleaners and carpet extractors. More specifically, the invention relates to surface cleaning apparatus which comprise a shoulder strap reel, preferably mounted to a suction and filtration unit
  • Various types of surface cleaning apparatus are known in the art, for example hand carryable vacuum cleaners, and vacuum cleaners, which are movable along a surface (e.g. an upright and a canister vacuum cleaner).
  • the vacuum cleaner that may be selected for a particular application will vary depending upon a number of factors. For example, vacuum cleaners that are used for cleaning an office or a residence require a large capacity dirt container and maneuverability. In order to increase the dirt capacity of a vacuum cleaner, the size of the dirt collection receptacle must be increased. Increasing the size of the dirt collection receptacle may result in the overall size of the vacuum cleaner be increased to such an extent that the maneuverability of the vacuum cleaner decreases.
  • a surface cleaning apparatus that has a shoulder strap reel.
  • An advantage of this design is that a user may employ a shoulder strap with, e.g., a vacuum cleaner, thereby increasing the maneuverability of the vacuum cleaner. Also, by using a shoulder strap, the user may carry part, and preferably, all of the weight of the unit on their torso thereby permitting the user to use a heavier vacuum cleaner (e.g. a larger more powerful motor and/or a larger collection bin). Further, the use of a shoulder strap may enable a user to use both hands for cleaning instead of using one to hold the vacuum cleaner. For example, a user may use one hand to move a surface cleaning wand and a second to move furniture out of the way of the surface cleaning head.
  • the shoulder strap is available for use when required (e.g., a surface cleaning apparatus is modified for being portable by withdrawing a module from a cradle or from a part of a larger apparatus) or when a user no longer wants to use a handle. Further, the strap may be retracted (manually or by a selfwinding mechanism) when the strap is not required (e.g., for storage or when a handle is used or the surface cleaning apparatus is placed on a cradle or into a larger apparatus.
  • the vacuum cleaner comprises a fluid flow path extending from a dirty fluid inlet to a clean air outlet of the vacuum cleaner, and includes a suction motor.
  • a suction and filtration unit comprises the suction motor and at least one cyclone.
  • the at least one cyclone comprises a cyclone inlet, a separated material outlet and a separated material collection chamber in flow communication with the cyclone.
  • a shoulder strap reel is mounted to the suction and filtration unit. In some embodiments, the shoulder strap reel is lockable in a plurality of positions. Such embodiments may be advantageous because a user may adjust the position of the shoulder strap according to their body size.
  • the shoulder strap reel is self-winding. Such embodiments may be advantageous because a user may not be required to wind and unwind the shoulder strap.
  • the shoulder strap reel is manually windable on the reel by a user.
  • the shoulder strap reel is mounted to an upper portion of the vacuum cleaner.
  • the suction and filtration unit has a carry handle provided thereon. Such embodiments may be advantageous because a user may choose to carry the vacuum cleaner by hand, or may choose to employ the shoulder strap, depending on the user's preference.
  • the shoulder strap reel is mounted to an upper portion of the vacuum cleaner and a carry handle is mounted on the shoulder strap reel.
  • the vacuum cleaner has an openable lid and the shoulder strap reel is provided on the openable lid.
  • the vacuum cleaner is an upright vacuum cleaner having an upper casing pivotally mounted to a surface cleaning head and the suction and filtration unit comprises at least part of the upper casing and is removably mounted to the surface cleaning head.
  • the suction and filtration unit is the upper casing and is removably mounted to the surface cleaning head.
  • the vacuum cleaner further comprises an above floor cleaning wand that is removable with the suction and filtration unit.
  • a surface cleaning apparatus comprises a fluid flow path extending from a dirty fluid inlet to a clean air outlet of the surface cleaning apparatus and including a suction motor.
  • the surface cleaning apparatus further comprises a suction and filtration unit comprising at least one fluid treating member and the suction motor.
  • a shoulder strap reel is mounted to the suction and filtration unit.
  • the shoulder strap reel is lockable in a plurality of positions.
  • the shoulder strap reel is self-winding. - A -
  • the shoulder strap reel is manually windable on the reel by a user.
  • the shoulder strap reel is mounted to an upper portion of the surface cleaning apparatus.
  • the suction and filtration unit has a carry handle provided thereon.
  • the shoulder strap reel is mounted to an upper portion of the surface cleaning apparatus and a carry handle is mounted on the shoulder strap reel.
  • the surface cleaning apparatus has an openable lid and the shoulder strap reel is provided on the openable lid.
  • the surface cleaning apparatus is an upright surface cleaning apparatus having an upper casing pivotally mounted to a surface cleaning head and the suction and filtration unit comprises at least part of the upper casing and is removably mounted to the surface cleaning head.
  • the suction and filtration unit is the upper casing and is removably mounted to the surface cleaning head.
  • the surface cleaning apparatus further comprises an above floor cleaning wand that is removable with the suction and filtration unit.
  • Figure 1 is a perspective illustration of an embodiment of a surface cleaning apparatus of the present invention
  • Figures 2A and 2B are perspective illustrations of an alternate embodiment of a surface cleaning head of the present invention
  • Figure 3 is a rear perspective illustration of an alternate embodiment of a surface cleaning apparatus of the present invention
  • Figure 4 is a cross-section taken along line 4-4 in Figure 1 ;
  • Figure 5 is a cross-section taken along line 5-5 in Figure 2B, showing a bottom door of a dirt bin in an opened position;
  • Figure 6 is a cross-section taken along line 6-6 in Figure 3;
  • Figure 7A is a perspective illustration of an alternate embodiment of a surface cleaning apparatus of the present invention, in a carryable configuration, and showing a user;
  • Figure 7B is a perspective illustration of the surface cleaning apparatus of Figure 7A, in a floor cleaning configuration;
  • Figure 7C is an perspective illustration of the surface cleaning apparatus of Figure 7A, without a user;
  • Figure 7D is a side view of the surface cleaning apparatus of Figure 7B, showing a shoulder strap in a wound position;
  • Figure 7E is a side view of the surface cleaning apparatus of Figure 7B, showing a shoulder strap in an un-wound position;
  • Figure 8 is a cross section taken along line 8-8 in Figure 3, showing the direction of airflow when the surface cleaning apparatus is in an upright configuration
  • Figure 9 is a side-view of the embodiment of Figure 3, showing the direction of airflow when the surface cleaning apparatus is in a floor cleaning configuration;
  • Figure 10 is a cross section taken along line 8-8 in Figure 3, showing the direction of airflow when the surface cleaning apparatus is in an carryable configuration
  • Figure 11 is a side-view of the embodiment of Figure 3, showing the direction of airflow when the surface cleaning apparatus is in an carryable or above floor cleaning configuration
  • Figures 12 and 13a are perspective illustrations of alternate embodiments of a reel of the present invention.
  • Figure 13b is a cross section taken along line B-B in Figure 13;
  • Figure 14 is a side view of a further alternate reel of the present invention.
  • Figure 15 is a partial front view of an alternate embodiment of a surface cleaning apparatus of the present invention, showing an embodiment of a shoulder strap reel in a unwound or in use position;
  • Figure 16 is a partial front view of the embodiment of Figure 15, showing a shoulder strap reel in an partially unwound position, which may be used to carry the unit higher off the floor; and Figure 17 is an exploded view of an alternate embodiment of a shoulder strap reel of the present invention.
  • Embodiments of a surface cleaning apparatus 10 of the present invention are shown in Figures 1 , 2, and 3.
  • the surface cleaning apparatus 10 may be a hand carryable vacuum cleaner.
  • the surface cleaning apparatus 10 may be a wheel- mounted vacuum cleaner, which may be converted to a carryable vacuum cleaner (e.g., a canister or a wet/dry vacuum cleaner).
  • the surface cleaning apparatus 10 may be an upright vacuum cleaner, which may be converted to a carryable vacuum cleaner.
  • the surface cleaning apparatus 10 may be another type of surface cleaning apparatus for example a stick vacuum cleaner, a back pack vacuum cleaner, a carpet extractor or the like.
  • Surface cleaning apparatus 10 comprises a fluid flow path extending from a dirty fluid inlet 12 to a clean air outlet 14.
  • a suction and filtration unit 16 is provided in the fluid flow path.
  • the suction and filtration unit comprises a fluid treating member, preferably a cyclonic cleaning stage 18 including at least one cyclone 20, a motor 22, and a material collection chamber 32.
  • the cyclonic cleaning stage 18 comprises a single cyclone 20, extending along an axis 24.
  • the cyclone comprises a cyclone inlet 26, a separated material outlet 28, and an air outlet 30.
  • Material collection chamber 32 is mounted below the cyclone 20, and includes an inlet 34 in fluid communication with separated material outlet 28.
  • Material collection chamber 32 may comprise a divider plate 33 mounted to a pedestal 35, and positioned adjacent inlet 34. Material collection chamber 32 may be emptied in a variety of ways, for example by pivoting a lower portion thereof to an open position, as shown in Figure 5.
  • each of cyclone 20 and material collection chamber or dirt collection chamber 32 may be configured as any such chamber known in the art and may be positioned at any location known in the art.
  • material collection chamber 32 may comprise or utilize a divider plate 33 provided in flow passage from the cyclone chamber to the material separation chamber 32. Divider plate 33 may be mounted at any location.
  • material collection chamber 32 may be positioned in the bottom of the cyclone chamber of cyclone 20 as opposed to in a separate chamber separated by a dirt outlet from the cyclone 20, with or without a divider plate 33.
  • the suction and filtration unit alternately, or in addition comprises other cleaning elements.
  • a second cleaning stage 36 is provided downstream from first cleaning stage 18.
  • Air exiting air outlet 30 of cyclone 20 is directed to second cleaning stage 36, which comprises a plurality of second cyclones 38 in parallel.
  • a pre-motor filter member 40 is provided downstream from second cleaning stage 36. Accordingly, in this embodiment, fluid enters dirty fluid inlet 12, is directed to cyclone 20, where material is separated from the fluid. The material enters chamber 32, and the air is directed to second cleaning stage 36, where further material is separated from the air. the air is then directed through filter member 40, past motor 22, and out of clean air outlet 14.
  • a filter member 40 is provided downstream from cleaning stage 18. Accordingly, in this embodiment, dirty fluid enters dirty fluid inlet 12, passes through a conduit 42 and is directed to cyclone 20, where material is separated from the fluid. The material enters chamber 32, and the treated air travels through filter member 40, past motor 22, and out of clean air outlet 14.
  • the dirty fluid to be treated may be water or other liquid (such as in the case of a carpet extractor or a wet/dry vacuum cleaner) or air with entrained dirt (such as in the case of a vacuum cleaner).
  • the first cleaning stage may comprise one cyclone or a plurality of cyclones in parallel and the optional second cleaning stage may also comprise one cyclone or a plurality of cyclones in parallel, one or more filters, or a combination thereof. Additional cleaning stages may also be provided.
  • suction and filtration unit 16 comprises a casing 44 as is exemplified.
  • casing 44 is a unitary, integrally molded casing comprising a cyclone casing portion 46, a motor casing portion 48, a chamber portion 50, and portions housing any additional components, such as second cleaning stage casing portion 52 and/ or filter member casing portion 54.
  • casing 44 may comprise an openable lid 45, which may be pivotally or removably mounted to the remainder of casing 44, and which can be opened by a user to view or repair portions of surface cleaning apparatus 10.
  • casing 44 may comprise various components, which are mounted together (e.g., one or more of portions 46, 48, 50, 52 and 54 may be provided and secured together to define suction and filtration unit 16, such as by means of an adhesive, welding, a mechanical fastener or a combination thereof).
  • cyclone casing portion 46, motor casing portion 48, chamber portion 50, and filter member casing portion 54 are separately molded, and may be mounted together to form casing 44.
  • surface cleaning apparatus 10 is either a carryable surface cleaning apparatus, or is capable of being converted to a carryable surface cleaning apparatus.
  • surface cleaning apparatus 10 is a hand carryable vacuum cleaner, and accordingly comprises a handle 56, which, in the exemplified embodiment, is integrally molded with casing 44.
  • surface cleaning apparatus 10 is a wheel mounted vacuum cleaner. Accordingly, surface cleaning apparatus 10 comprises a plurality of wheels 58. Wheels may be permanently mounted to casing 44 (not shown), or alternatively, may be provided on a wheeled mount or cradle 60, to which casing 44 may removably mounted. In this embodiment, surface cleaning apparatus 10 may be converted to a carryable surface cleaning apparatus by lifting surface cleaning apparatus off of the ground. Surface cleaning apparatus 10 may be lifted off the ground together with wheels 50, or surface cleaning apparatus 10 may be removed from wheeled mount 60 (which may include release an optional lock or catch used to secure unit 16 to wheeled mount 60), and then lifted off the ground, as shown in Figure 2B.
  • surface cleaning apparatus 10 is an upright vacuum cleaner, and accordingly includes a handle 62, mounted to a backbone 64, to which suction and filtration unit 16 and conduit 42 are mounted. Conduit 42 is pivotally mounted to a surface cleaning head 66.
  • surface cleaning apparatus 10 may be converted from an upright surface cleaning apparatus to a carryable surface cleaning apparatus, shown in Figure 7 as follows.
  • Surface cleaning apparatus 10 may be converted from an upright vacuum cleaner, shown in Figures 8 and 9, to a carryable surface cleaning apparatus, shown in Figures 10-11 , by rotating valve 68.
  • valve 68 connects surface cleaning head 66 to cyclone inlet 26, such that air travels in a direction indicated by arrows A1 from surface cleaning head 66 to cyclone inlet 26.
  • valve 68 is rotated to the carryable or above floor cleaning position, and above floor cleaning wand 70 is removed from a handle mount 69, air travels through an above floor cleaning wand 70 to flexible hose 72 past valve 68 to cyclone inlet 26.
  • a user may detach suction and filtration unit 16 from conduit 42, and carry surface cleaning apparatus 10. Any other valving and wand configuration known in the art may be used.
  • apparatus 10 may be provided with a shoulder strap 76, shown in Figure 5, for aiding in carrying cleaning apparatus 10 when used in a carryable position.
  • Shoulder strap 76 may be any strap of suitable strength and size for carry surface cleaning apparatus 10.
  • Strap 76 may be provided with a cushioning pad provided thereon (not shown) which may be slidably mounted on strap 76 so that it may be moved to seat on a user's shoulder when strap 76 is used.
  • Shoulder strap 76 may be mounted to surface cleaning apparatus at any location.
  • shoulder strap reel 76 is mounted on an upper surface of unit 16 or a side portion thereof.
  • shoulder strap reel 76 may be mounted on the top surface of unit 16 or it may be mounted on a side wall adjacent the top wall as exemplified in Figure 7B-7E.
  • shoulder strap 76 may extend from a reel 76 on one side of the unit 16 to a rod or pin or the like mounted on the opposed side, or to another reel 76 on the opposed side.
  • Unit 16 may be provided with a carry handle, in which case handle may be mounted on reel 74, reel 74 may surround the base of the handle or strap
  • reel 74 may overlie the handle when strap 74 is retraced into the reel, as exemplified in Figures 7B - 7E.
  • shoulder strap reel 74 is manually windable on reel 76.
  • reel 74 may be selfwinding.
  • shoulder strap 76 may be mounted to a first portion 78 of casing 44 at a first end 86a thereof, and mounted to a second portion 82 of casing 44 at a second end 86b thereof.
  • the ends 86a, 86b of shoulder strap 76 may be mounted to casing 44 by one or more shoulder strap reels 74 mounted to casing 44. In some embodiments, both ends of 86a, 86b of shoulder strap 76 may be mounted to a single reel 74.
  • one end 86a may be mounted to a reel 74, and the other end 86b may be mounted to another member, for example a rod 75, to which end 86b may be affixed, or removably affixed via a releasable clip.
  • Shoulder strap reel 74 may be of a variety of configurations, and be mounted to casing 44 in a variety of ways.
  • reel 74 comprises a pair of flanges 80a, 80b mounted to a first portion 78 of casing
  • flanges 80a, 80b may be integrally formed with casing 44 or may be separately manufactured and secured thereto by, e.g., an adhesive, welding, a mechanical fastener or a combination thereof.
  • a pin may be integrally formed with casing 44 or may be separately manufactured and secured thereto by, e.g., an adhesive, welding, a mechanical fastener or a combination thereof.
  • pin 84 extends between each pair of flanges, and is rotatably mounted thereto by extending through holes 85a, 85b provided in each flange.
  • Pin 84 may comprise flanges 87 (shown in Figure 13A) at the ends thereof, for preventing pin 84 from sliding out of holes 85a, 85b.
  • An end 86a of shoulder strap 76 is secured to pin 84.
  • an adhesive may be used to secure end 86a to pin 84, or a slot may be provided in pin 84 into which end 86a may be inserted, or it may be stapled thereto.
  • Strap may be wound or unwound onto pin 84 by a user.
  • a user may desire to wind strap 76 onto pin 84, such that it is out of the way of the user.
  • the user may unwind strap 76 to a desired length, such that it may be used.
  • reel 74 is manually winding, and further comprises a crank 88 coupled to pin 84.
  • Crank 88 may be rotated by a user, such that strap 76 is wound on wound onto pin 84 by rotating crank 88 in a direction indicated by arrow A3, and unwound on pin 84 by rotating crank 88 in a direction opposite to arrow A4.
  • reel may be manually wound in another manner.
  • reel 74 is self winding.
  • reel 74 and comprises a torsion spring 90.
  • Torsion spring 90 is a coil spring, and mounted at one end 92a to flange 80a, and at the other end 92b to pin 84. Accordingly, when strap 76 is unwound, pin 84 rotates in a direction indicated by arrow A5, and spring 90 is tensioned.
  • strap reel may be self-winding in another manner.
  • strap reel 74 may be electronically actuated.
  • Strap reel 74 may further comprise a locking member for locking strap 76 in one or more positions.
  • an end 94 of pin 84 may comprise teeth 95 extending outwardly from pin 84.
  • Flange 80a comprises a spring loaded lever 96 rotatably mounted thereto at pivot point 98. In a relaxed state, lever 96 is biased in a direction indicated by arrow A6, and allows pin 84 to rotate in a direction indicated by arrow A7, which corresponds to a direction required to wind strap 76.
  • Lever 96 is configured to prevent pin 84 from rotating in a direction opposite to arrow A7, which corresponds to a direction required to unwind strap 76.
  • a user may retract lever 96 by rotating it in a direction opposite to arrow A6, and unwind strap 76, for example pulling on strap 76.
  • the user may release lever 96, such that it returns to its biased position. Accordingly, when the user lifts the surface cleaning apparatus 10 with strap 76, the strap will remain in the position set by the user, and will not unwind further due to gravity.
  • lever 96 may be moved out of the path of rotation of teeth 95 (e.g., by being translated in the longitudinal direction of pin 84).
  • a friction brake, a pin 102 insertable into a hole, or any other reel construction known in the art may be used, as shown in Figures 15 and 16.
  • handle 56 may have a portion that is narrower then the strap so that a user may easily grab strap 76 and extend it to an in use position, Alternately, or in addition, handle 56 may be recessed inwardly from the side wall of the surface cleaning apparatus as exemplified in Figures 15 and 16, or otherwise configured or the configuration or positioning of the reel adjusted, to provide a space between handle 56 and strap 76 when strap is fully retracted and seats on handle 56. This gap provides a location which a user may utilize to grab strap 76 and extend strap 76 to an in use position.
  • reel 74 comprises a reel body 104, a manipulation lever 106, an elastic spring member 108, a brake member 110, and a damper unit 112.
  • Reel body 104 is rotatably supported by a rotary shaft 114, and partially enclosed by reel cover 116. A similar cover may be provided on the opposed side.
  • the strap 76 is wound and unwound around a winding part or hub 118 as the reel body 104 is rotated in one direction or another. Strap 76 may be of any desired width.
  • the reel body 104 is elastically biased by a spiral spring 120 so that the reel body 104 is rotated in the direction D for winding the strap 76 onto hub 118.
  • the spiral spring 120 is wound as the strap 76 is pulled from the reel body 104.
  • the inner end of the spiral spring 120 fits within an insertion recess 122 of the rotary shaft 114 thereby engaging the reel body 104 to the rotary shaft 114, through the spring 120.
  • the brake member 110 can frictionally engage and disengage the reel body 104 to disable or enable control rotation of the reel body 104 respectively when the user operates the manipulation lever 106.
  • the brake member 110 is normally spaced away from reel body 104 allowing the strap 76 to be withdrawn from the reel 74.
  • the brake member 110 is preferably a friction roller, however alternate embodiments include using a friction pad or a toothed member to engage teeth provided on the rim of reel body 104.
  • the manipulation lever 106 comprises a coupling 124 connected or otherwise engaged to the brake member 110, and, a brake activation part 126, which can be selective actuated by the user to move the brake member 110 away from the reel body 104 when the manipulation part 126 is operated.
  • the manipulation lever 106 in this embodiment is installed in the reel 74 to pivot about the rotary shaft 128.
  • Spring member 108 elastically biases the lower end of the manipulation part 126 upwardly and therefore elastically biases the manipulation lever 106.
  • a brake member damper unit 112 impedes or slows the movement of the brake member 110 from contact with the reel body 104 when an actuating force that was applied to the manipulation part 126 is removed.
  • the time between actuation of the manipulation lever 106 to release the brake member 110 and the re-engagement of the brake member 110 to the reel body 104 is lengthened, allowing the manipulation lever 106 to return to its initial position more slowly, which in turn allows the spring 120 more time to fully wind the strap 76.
  • the damper unit 112 controls the manipulation lever 106 to slowly return to its original position to assure a sufficient length of time for completely winding the strap 76.
  • end 86b of strap 76 is releasably securable to a member provided on housing 44, such that when end 86b is released from the member, strap 76 may be hidden.
  • all or a portion of reel 74 may be provided in a casing, for example a portion of casing 44, for hiding all or a portion of reel 74.
  • surface cleaning apparatus 10 may be provided with one reel 74, or two reels 74.
  • the reels 74 may be mounted to housing 44 at a variety of positions. In some embodiments, as shown in
  • reel(s) 74 may be mounted to casing 44 at an upper portion
  • reel(s) 74 may be mounted to casing 44 at lid 45.
  • handle 56 may be mounted to reel 74.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Suction Cleaners (AREA)

Abstract

L'invention porte sur un appareil de nettoyage de surfaces monolithique comprenant un enrouleur de bretelle contenant une bretelle manuellement ou automatiquement déployable ou rétractable.
PCT/CA2007/002209 2006-12-12 2007-12-11 Appareil de nettoyage de surfaces à enrouleur de bretelle WO2008070967A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US86958606P 2006-12-12 2006-12-12
US60/869,586 2006-12-12
US87017506P 2006-12-15 2006-12-15
US60/870,175 2006-12-15
US88476707P 2007-01-12 2007-01-12
US60/884,767 2007-01-12

Publications (1)

Publication Number Publication Date
WO2008070967A1 true WO2008070967A1 (fr) 2008-06-19

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PCT/CA2007/002209 WO2008070967A1 (fr) 2006-12-12 2007-12-11 Appareil de nettoyage de surfaces à enrouleur de bretelle

Country Status (2)

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US (1) US20080178416A1 (fr)
WO (1) WO2008070967A1 (fr)

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CN109419447A (zh) * 2017-09-04 2019-03-05 德国福维克控股公司 用于抽吸清洁设备的吸嘴

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