EP2226048A1 - Motorisierter Rollstuhl - Google Patents

Motorisierter Rollstuhl Download PDF

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Publication number
EP2226048A1
EP2226048A1 EP09154143A EP09154143A EP2226048A1 EP 2226048 A1 EP2226048 A1 EP 2226048A1 EP 09154143 A EP09154143 A EP 09154143A EP 09154143 A EP09154143 A EP 09154143A EP 2226048 A1 EP2226048 A1 EP 2226048A1
Authority
EP
European Patent Office
Prior art keywords
wheelchair
container
hand
battery
lock mechanism
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.)
Withdrawn
Application number
EP09154143A
Other languages
English (en)
French (fr)
Inventor
Ralf Ritter
Peter Jost
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.)
Invacare International SARL
Original Assignee
Invacare International SARL
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 Invacare International SARL filed Critical Invacare International SARL
Priority to EP09154143A priority Critical patent/EP2226048A1/de
Priority to PCT/IB2010/050894 priority patent/WO2010100604A1/en
Priority to EP10708632.4A priority patent/EP2403462B1/de
Publication of EP2226048A1 publication Critical patent/EP2226048A1/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
    • A61G5/041—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven having a specific drive-type
    • A61G5/042—Front wheel drive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1078—Parts, details or accessories with shock absorbers or other suspension arrangements between wheels and frame
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1089—Anti-tip devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
    • A61G5/047—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven by a modular detachable drive system

Definitions

  • the present invention relates to a motorized wheelchair. More particularly, the present invention relates to a construction of the chassis of a motorized wheelchair, which allows to quickly remove the batteries of the wheelchair without the need of any special tool and/or without the need of removing any important part of the wheelchair before being able to access the batteries.
  • the invention also relates to a wheelchair comprising an easily accessible casement for storing spare fuses.
  • the enhancement of convenience has been an important factor in the development of wheelchairs in the recent years. Convenience has thereby been understood as the number of functionalities of a wheelchair and characteristics of a wheelchair, such as stand-up function, and the like.
  • the present invention addresses the concept of convenience also in the context of maintenance, servicing but also of storage of a wheelchair and/or for transport. Accordingly, it is an objective of the present invention to render one or more servicing and/or maintenance activities and processes more convenient. It is also an objective to enable a wheelchair user to perform one or more servicing and/or maintenance processes by her- or himself.
  • the present invention addresses the problems depicted above.
  • the present invention provides a motorized wheelchair comprising a wheelchair frame and at least one container comprising at least one battery, wherein said battery is retained on the wheelchair by way of a lock mechanism that can be loosened without any special tool and/or by way of a limited number of movements.
  • situations and directions of elements of the wheelchair of the present invention are determined by the perspective of a user seated in the wheelchair. Accordingly, the left side of the wheelchair corresponds to the left side of Figure 1 .
  • the situations or directions “up” or “top” and “down” or “bottom”, “rear” or “back” and “front”, “behind” and “in front”, “distal” and “proximal”, “lateral” and “central” follow the same rule.
  • the present invention relates to a motorized wheelchair.
  • the motorized wheelchair may be a dismountable wheelchair, meaning that at least a part of the wheelchair can be reversibly removed from the wheelchair. In this way, it is possible to remove at least one part, for example for the purpose of repairing the part or in order to arrange the wheelchair in a more space-saving manner, for example for storage and/or transport of the wheelchair.
  • Figure 1 shows an embodiment of the wheelchair 1 of the present invention with the seat, arm and legrests of the wheelchair being removed for the reasons of clarity. Any one selected from the seat, the armrests and or the legrests may be demountable and remountable.
  • the perspective rear view of Figure 1 shows a pair of right and left motor wheels 6, 6', right and left rear anti-tip wheels 8, 8' and a right front castor wheel 7 (the left front castor wheel not being visible in this view).
  • the anti-tip wheels are connected at the end of right and left curved support arms 9, 9', respectively.
  • a right motor 10 is visible, and together with a left motor 10' (not visible), the motors are provided in order to propel the right and left motorized wheels 6, 6', respectively.
  • the castor wheels 7, 7' and the motorized wheels 6, 6' are fixed to a chassis or frame 5.
  • the anti-tip wheels 8, 8' are provided at the rear end of the right and left curved support arms 9, 9', said support arms being attached to swing arms being part of the chassis 5.
  • the chassis 5 comprises a main, U-shaped frame element 11, the open end of the U being oriented towards the front.
  • a horizontal frame element 12 is provided in a front area of the chassis 5.
  • the wheelchair 1 shown in Figure 1 comprises two demountable boxes, a rear box 16 and a front box 17, in which batteries are accommodated. On the rear box 16, a hand-actuated device 30 can be seen.
  • the term “box” and “container are generally regarded as equivalent, which applies in particular to the appended claims.
  • the term box is generally used for referring to the entire element encasing the battery, the box thus comprising a lid and a container as such, which can be closed by the lid.
  • the term “container” then generally refers to the lower, open element of the battery box.
  • the term "hand-accessible” refers to the fact that this structure can be reached and gripped by the hand of a person, for example a wheelchair user, a service person or any assisting person.
  • the hand-actuated device 30 is provided in the form of a strap or band, and when a person draws on the strap, a locking mechanism opens and the battery box 16 can be removed from the chassis.
  • the batteries provided in the containers 16, 17 are preferably reloadable batteries.
  • FIG 2 shows the same wheelchair as Figure 1 , but with the battery boxes 16 and 17 being removed from the chassis and placed on the ground behind the wheelchair 1. With the batteries being removed, the left motor 10' can be seen, and rails 15, 15' can be seen better. As will be described in more detail below, the battery boxes 16 and 17 are placed on the rails in the position shown in Figure 1 , and also in the position of use of the wheelchair. In Figure 2 , a strap or gripper 130 provided on the front battery box 17 can be seen. While the strap 130 on the front battery box also provides a grip for removing the battery box 17 from the rails, there is no lock mechanism provided associated with the front battery box 17. Of course, it would be possible to provide such a lock mechanism also on the front box 17.
  • the position of the battery boxes 16 and 17 following their removal from the chassis 5 indicates that the rear battery box 16 is removed first, followed by the removal of the front battery box 17.
  • the latter can be accessed only after removal of the former, and is otherwise sandwiched and thus blocked within the chassis and the rear battery box 16.
  • the rear battery box 16 in turn, is stabilized or blocked against any uncontrolled movement by the front battery box 17 and a lock mechanism provided between the rear box 16 and the chassis, as will be detailed further below.
  • the rails 15, 15' connected to the chassis 5 prevent lateral displacement of the battery boxes 16 and 17 in a position of use of the wheelchair ( Figure 1 ).
  • Figure 3 shows an enlarged view of the wheelchair with the batteries being removed as in Figure 2 .
  • the battery boxes are no longer shown in Figure 3 .
  • FIG 4 shows the battery boxes 16 and 17 and the rail construction 20 comprising right and left rails 15, 15' being removed from the chassis of the wheelchair, the battery boxes and the rail construction being aligned for the purpose of illustration.
  • the rail construction 20 comprises right and left connection plates 21, 21' attached to said right and left rails 15, 15' at about halfway of the longitudinal extension of said rails.
  • the connection plates 21, 21' comprise openings for attaching the rail construction on the chassis, for example by way of screws or bolts.
  • Both rails 15, 15' are connected to each other by way of a front transversal connecting structure 22, which, together with said rails 15, 15', forms an U-shaped structure, with the open end of the U oriented towards the rear end of the wheelchair.
  • said connecting structure comprises an electric socket 70, which is designed to engage with an electric connector 60 provided on the front battery box 17.
  • a similar electric connector 50 is provided on the rear battery box 16, which engages with a corresponding female part on the front battery box, not visible in Figure 4 .
  • cables are provided, not shown, which supply electric energy from the socket 70 to motors 10 and 10' ( Figures 1 and 2 ) and to a central data processing unit or a computer (not shown).
  • each battery box 16, 17, comprises a pair of right and left lateral carriers 26, 26' and 27, 27', respectively.
  • the carrying structures are placed on the rails 15, 15' and thus provide the guiding of the battery boxes 16, 17 on the rails 15, 15'.
  • the carrying structures 26, 26', 27, 27' are rigidly attached to the boxes and are sufficiently solid and strong to allow the weight of the batteries in the battery boxes being suspended by way of the carriers on the rails.
  • Each carrying structure comprise a profile having the shape of a longitudinally cut hollow cylinder, which is oriented in parallel to the rails and thus engages the rails when the box is placed on the rails.
  • the hollow cylindrical shape prevents lateral movement of the battery boxes by fitting with and partially surrounding the cylindrical form of the rails.
  • Figure 5 shows the same elements as Figure 4 , with the front battery box 17 being situated on the rails 15, 15', and the rear battery box closely behind the rails.
  • Figure 6 shows the battery boxes 16 and 17 being positioned and locked on the rails 15, 15'.
  • Figures 4 through 6 together thus illustrate the way of movement that the battery boxes 16 and 17 undergo when being placed on the rails 15, 15' in the wheelchair of the present invention.
  • FIGs 5 and 4 illustrate the removal of the battery boxes 16 and 17 from the rail system provided on the chassis of the wheelchair in accordance with an embodiment of the present invention.
  • FIG. 7 is a closer view to the rear end of the rear battery box 16 when placed on the rails 15, 15' of the wheelchair of the invention.
  • the hand-actuated device 30 and the associated lock mechanisms 32, 32' are provided on right and left sides of the battery box 16.
  • the hand-actuated device 30 is provided in the form of a tension boom or tension flange 30 that basically comprises a flexible strap or band 31, which can be grasped by a person from behind the wheelchair, when the wheelchair is in a position of use.
  • the lock mechanisms 32, 32' are unlocked and the battery box 16 can be removed at the rear end of the wheelchair by sliding on the rails 15, 15' and finally sliding off the rails.
  • right and left stand-off plates 33, 33' are attached, for example welded, at the rear end of the rails 15, 15'.
  • Each stand-off plate comprises a hole, in which a pin 34, 34' is engaged.
  • the pins 34, 34' are part on the lock mechanism provided on the battery box 16, and the engagement of said pins with the holes provided in the stand-off plates 33, 33' on the rails 15, 15' thus locks the battery box against movement on or away from the rails and prevents removal of the box 16.
  • Figure 8 is a closer view showing in more detail the right lock mechanism shown in Figure 7 .
  • An identical mirrored structure can be recognized on the left side of Figure 7 .
  • a lateral end of the strap 31 of the tension boom 30 is connected to a ring 35, which is preferably made from a non flexible, rigid material, such as metal or hard plastic.
  • the ring 35 engages in a hole at a central end of a pin, the pin being retained in a support comprising a holding element 36 and two screw nuts 37, 38, through which the pin 34 is guided.
  • the holding element is rigidly attached to and stands off from the wall of the battery box 16.
  • the pin 34 is resiliently harboured within a space provided by said nuts 37, 38 and said holding element 36.
  • the pin When a person draws the strap 31, the pin is drawn in a transversal movement towards a slightly more central position with respect to the wheelchair. The lateral end of the pin, which engages the hole in the stand-off plate 33 of the rail 15 is removed from said hole. However, at some point, the pin is blocked within the elements 36-38 in which it is harboured, so that the pin cannot be completely removed by exerting a drawing force on the strap 31. The pin 34 thus contributes together with the support elements 36-38 to a secure connection between the strap 31 and the battery box 16.
  • a resilient element for example a spring, which is not visible in the figures, is also harboured within the support elements 36-38 and is placed so as to provide a resilient pressure on the pin in an axially outward direction, that is towards the locked position, in which the pin 34 is engaged in the hole of the stand-off plates 33.
  • This resilient construction prevents the lock mechanism from being unlocked unintentionally, in that the pin 34 does not spontaneously disengage from the hole in the stand-off plates 33.
  • Figure 8 shows the lock mechanism in the wheelchair of the invention in a locked position.
  • a traction is exerted on the tension boom 30, said traction being passed via the ring 35 on the pin 34 as shown in Figure 9 .
  • the traction is exerted against the force of the resilient means (not shown) keeping the pin in the engagement with the corresponding hole in the stand-off plate 33 of the rail 15 and thus results in an unlocking of the lock mechanism.
  • the traction on strap 31 by drawing in a rearward direction also results in the corresponding pin 34' on the left side of the wheelchair (not shown) being disengaged and thereby the left lock mechanism being unlocked.
  • Figures 11 through 13 show the same situation as Figures 8 through 10 , respectively, but from a different, lateral perspective view.
  • part of the carrier 26 has already been passed over the rear end of the rails.
  • further traction exerted on the strap in the direction indicated by the arrow will lead to a removal of the battery box 16 from the rails 15, 15'.
  • Figure 14 shows the battery box 16 in a perspective view of its left, rear and top side.
  • the box 16 comprises a basic container 41 on which a lid 42 is placed and detachably fixed by way of four clip mechanisms 43, 43', 44, 44', two on each side, with the clips on the right side not being visible in this view.
  • the four clips on the lid can be actuated by hand for lifting the lid and removing the battery inside the battery box, as will be described further below.
  • Figure 14 shows the hand-actuated device (the tension flange 30) comprising the strap 31 that can be grasped by a person when the box 16 is hung up on the rails on the chassis of the wheelchair, as has been described above.
  • the right and left lock mechanisms 32 and 32' as well as the respective pins 34, 34' can also be seen to be part of the box.
  • the right and left carriers 26, 26' of the box which lie on the rails and thus carry the box 16 in a position of use can be seen to be relatively large and comprising a plurality of reinforcing structures 49 for assuring that the battery is safely harboured in the box when the latter is suspended on the rails.
  • Each right and left carriers 26, 26' also comprise an opening 58, 58' forming a grip, respectively, which allows to a person to conveniently lift the battery box 16 by gripping the container 41 at the carriers 26, 26'.
  • Figure 15 is an exploded view of the battery box 16 with the lid 42 being lifted and showing more details of some inner elements of the box such as the battery 45 itself as well as the male connector 50.
  • the battery 45 can be conveniently removed from the container when the lid is lifted following opening the four clips 43, 43', 44, 44', preferably by hand.
  • An advantage of the present invention is that the wheelchair can at least partly be demounted by hand, without the need of any special or ordinary tool. From the exploded view of Figure 15 , it can be seen that a connector 50 is provided, which, when the lid 42 is on the container, is retained in an open area 110a and 110b provided in the lid 42 and the container 41.
  • This open area is situated in a central position at the interface of the container 41 and the lid 42 (the open area 110b in the lid 42 is not visible in Figure 15 but its position is indicated by reference numeral 110b).
  • the open areas 110a, 110b are bordered by a doubled wall 48a and 48b on the container and the lid, respectively.
  • a sleeve 111 provided on the connector fits within the double walls 48a and 48b so that when the lid 42 is mounted the connector is stabilized in the open areas 110a, 110b of the container and the lid.
  • the male connector 50 in the rear box 16 is adapted to fit a female connector 120 of the front battery box 17, which can be seen in Figure 2 and also in Figure 17 below.
  • open areas 112a and 112b are also provided on the rear side of the rear battery box.
  • the open area 112 formed by open areas 112a and 112b on the rear side of the container 41 and the lid 42, respectively, is closed by a place-holder 100, which can also be seen in Figures 1, 2 and 7 .
  • the place-holder 100 actually comprises a small lumen (not shown) in which small spare parts 101 can be placed.
  • there as two spare fuses 101 placed in the place-holder disk 100 there as two spare fuses 101 placed in the place-holder disk 100.
  • Figures 16 and 17 show an assembled and an exploded view, respectively, of the front box 17.
  • the front box 17 is largely identical in shape and size as the rear box 16, and in particular the container 41 as such and the lid 42 of the front box 17 is substantially identical to the corresponding structure, which is why identical reference numerals are used.
  • This also applies to the open areas 112a, 112b, 110a, 110b in the front box 17, whereas the suspension carriers 27, 27' provided on the right and left side, respectively, of the container 41, were given separate reference numerals already previously.
  • the front battery box 17 does not comprise a lock mechanism.
  • the tension boom 130 of the front box 17 thus comprises a band 131, which is directly attached to the container 41 and does not comprise a resilient locking pin as described with reference to Figures 7-14 above.
  • a further difference between the front and the rear battery box is that the front battery box 17 harbors a female connector 120, which is designed to engage with the male connector 50 of the rear battery box 16. In this way, the batteries 45 of the front and rear battery boxes 16, 17 are connected with each other.
  • a front connector 60 of the front battery box 17 is designed to engage with a female socket 70 visible in Figures 3-6 .

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Battery Mounting, Suspending (AREA)
EP09154143A 2009-03-02 2009-03-02 Motorisierter Rollstuhl Withdrawn EP2226048A1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP09154143A EP2226048A1 (de) 2009-03-02 2009-03-02 Motorisierter Rollstuhl
PCT/IB2010/050894 WO2010100604A1 (en) 2009-03-02 2010-03-02 Motorized wheelchair
EP10708632.4A EP2403462B1 (de) 2009-03-02 2010-03-02 Motorisierter rollstuhl

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09154143A EP2226048A1 (de) 2009-03-02 2009-03-02 Motorisierter Rollstuhl

Publications (1)

Publication Number Publication Date
EP2226048A1 true EP2226048A1 (de) 2010-09-08

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP09154143A Withdrawn EP2226048A1 (de) 2009-03-02 2009-03-02 Motorisierter Rollstuhl
EP10708632.4A Not-in-force EP2403462B1 (de) 2009-03-02 2010-03-02 Motorisierter rollstuhl

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10708632.4A Not-in-force EP2403462B1 (de) 2009-03-02 2010-03-02 Motorisierter rollstuhl

Country Status (2)

Country Link
EP (2) EP2226048A1 (de)
WO (1) WO2010100604A1 (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8172015B2 (en) 2001-10-10 2012-05-08 Invacare Corporation Wheelchair suspension
US8172016B2 (en) 2000-10-27 2012-05-08 Invacare Corporation Obstacle traversing wheelchair
EP2497452A1 (de) 2011-03-07 2012-09-12 Invacare International Sàrl Motorisierter Rollstuhl
US8272461B2 (en) 2007-02-08 2012-09-25 Invacare Corporation Wheelchair suspension
US8297388B2 (en) 2007-01-12 2012-10-30 Invacare International Sarl Wheelchair with suspension arms
US8534679B2 (en) 2002-10-25 2013-09-17 Invacare Corporation Suspension for wheeled vehicles
US8573341B2 (en) 2001-10-19 2013-11-05 Invacare Corporation Wheelchair suspension
US8910975B2 (en) 2007-02-14 2014-12-16 Invacare Corporation Wheelchair with suspension
US9010470B2 (en) 2009-10-09 2015-04-21 Invacare Corporation Wheelchair suspension
US9308143B2 (en) 2012-02-15 2016-04-12 Invacare Corporation Wheelchair suspension
US11213441B2 (en) 2002-10-25 2022-01-04 Invacare Corporation Suspension for wheeled vehicles
US11903887B2 (en) 2020-02-25 2024-02-20 Invacare Corporation Wheelchair and suspension systems

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EP0677413A1 (de) * 1994-04-15 1995-10-18 Invacare Corporation Vorrichtung zur Verbindung von Batterien eines Rollstuhls
EP0908164A2 (de) * 1997-10-06 1999-04-14 Sunrise Medical HHG Inc. Auswechselbares Batterie-Pack mit Verriegelungsmechanismus für selbstfahrenden Rollstuhl
US20010013437A1 (en) * 2000-02-12 2001-08-16 Husted Royce H. Removable battery for powered chairs and the like
US20020017404A1 (en) * 2000-06-21 2002-02-14 Mobility E-Z, Llc. Battery powered, joystick controlled folding wheelchair
DE102004015603B3 (de) * 2004-03-30 2005-04-14 Otto Bock Healthcare Gmbh Zerlegbarer Elektrorollstuhl
US20060000664A1 (en) * 2004-07-02 2006-01-05 Chao-Kuo Huang Motorized apparatus for towing a wheelchair
US20070221423A1 (en) * 2006-03-27 2007-09-27 Chienti Enterprise Co., Ltd. Motorized wheel chair whose battery is mounted easily and quickly

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Publication number Priority date Publication date Assignee Title
DE20003700U1 (de) * 2000-02-29 2000-05-18 Rehatechnik Heymer Gmbh Anordnung zum Befestigen einer Spannungsquelle in einer Halterung

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Publication number Priority date Publication date Assignee Title
EP0677413A1 (de) * 1994-04-15 1995-10-18 Invacare Corporation Vorrichtung zur Verbindung von Batterien eines Rollstuhls
EP0908164A2 (de) * 1997-10-06 1999-04-14 Sunrise Medical HHG Inc. Auswechselbares Batterie-Pack mit Verriegelungsmechanismus für selbstfahrenden Rollstuhl
US20010013437A1 (en) * 2000-02-12 2001-08-16 Husted Royce H. Removable battery for powered chairs and the like
US20020017404A1 (en) * 2000-06-21 2002-02-14 Mobility E-Z, Llc. Battery powered, joystick controlled folding wheelchair
DE102004015603B3 (de) * 2004-03-30 2005-04-14 Otto Bock Healthcare Gmbh Zerlegbarer Elektrorollstuhl
US20060000664A1 (en) * 2004-07-02 2006-01-05 Chao-Kuo Huang Motorized apparatus for towing a wheelchair
US20070221423A1 (en) * 2006-03-27 2007-09-27 Chienti Enterprise Co., Ltd. Motorized wheel chair whose battery is mounted easily and quickly

Cited By (37)

* Cited by examiner, † Cited by third party
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US9149398B2 (en) 2000-10-27 2015-10-06 Invacare Corporation Obstacle traversing wheelchair
US8172016B2 (en) 2000-10-27 2012-05-08 Invacare Corporation Obstacle traversing wheelchair
US9987177B2 (en) 2000-10-27 2018-06-05 Invacare Corporation Obstacle traversing wheelchair
US8172015B2 (en) 2001-10-10 2012-05-08 Invacare Corporation Wheelchair suspension
US9370455B2 (en) 2001-10-10 2016-06-21 Invacare Corporation Wheelchair suspension
US8573341B2 (en) 2001-10-19 2013-11-05 Invacare Corporation Wheelchair suspension
US9925100B2 (en) 2002-10-25 2018-03-27 Invacare Corporation Suspension for wheeled vehicles
US8534679B2 (en) 2002-10-25 2013-09-17 Invacare Corporation Suspension for wheeled vehicles
US9364377B2 (en) 2002-10-25 2016-06-14 Invacare Corporation Suspension for wheeled vehicles
US11213441B2 (en) 2002-10-25 2022-01-04 Invacare Corporation Suspension for wheeled vehicles
US10512572B2 (en) 2002-10-25 2019-12-24 Invacare Corporation Suspension for wheeled vehicles
US8297388B2 (en) 2007-01-12 2012-10-30 Invacare International Sarl Wheelchair with suspension arms
US10912690B2 (en) 2007-02-08 2021-02-09 Invacare Corporation Wheelchair suspension
US10265229B2 (en) 2007-02-08 2019-04-23 Invacare Corporation Wheelchair suspension
US11464687B2 (en) 2007-02-08 2022-10-11 Invacare Coporation Wheelchair suspension
US8794359B2 (en) 2007-02-08 2014-08-05 Invacare Corporation Wheelchair suspension
US9603762B2 (en) 2007-02-08 2017-03-28 Invacare Corporation Wheelchair suspension
US8272461B2 (en) 2007-02-08 2012-09-25 Invacare Corporation Wheelchair suspension
US11819464B2 (en) 2007-02-08 2023-11-21 Invacare Corporation Wheelchair suspension
US9827823B2 (en) 2007-02-14 2017-11-28 Invacare Corporation Stability control system
US11535078B2 (en) 2007-02-14 2022-12-27 Invacare Corporation Stability control system
US11850906B2 (en) 2007-02-14 2023-12-26 Invacare Corporation Stability control system
US9346335B2 (en) 2007-02-14 2016-05-24 Invacare Corporation Stability control system
US8910975B2 (en) 2007-02-14 2014-12-16 Invacare Corporation Wheelchair with suspension
US11097589B2 (en) 2007-02-14 2021-08-24 Invacare Corporation Stability control system
US10532626B2 (en) 2007-02-14 2020-01-14 Invacare Corporation Stability control system
US9010470B2 (en) 2009-10-09 2015-04-21 Invacare Corporation Wheelchair suspension
US11096845B2 (en) 2009-10-09 2021-08-24 Invacare Corporation Wheelchair suspension
US9913768B2 (en) 2009-10-09 2018-03-13 Invacare Corporation Wheelchair suspension
US11857470B2 (en) 2009-10-09 2024-01-02 Invacare Corporation Wheelchair suspension
US8820454B2 (en) 2011-03-07 2014-09-02 Invacare International Sarl Motorized wheelchair
EP2497452A1 (de) 2011-03-07 2012-09-12 Invacare International Sàrl Motorisierter Rollstuhl
US9308143B2 (en) 2012-02-15 2016-04-12 Invacare Corporation Wheelchair suspension
US10434019B2 (en) 2012-02-15 2019-10-08 Invacare Corporation Wheelchair suspension
US11234875B2 (en) 2012-02-15 2022-02-01 Invacare Corporation Wheelchair suspension
US9700470B2 (en) 2012-02-15 2017-07-11 Invacare Corporation Wheelchair suspension
US11903887B2 (en) 2020-02-25 2024-02-20 Invacare Corporation Wheelchair and suspension systems

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EP2403462A1 (de) 2012-01-11
EP2403462B1 (de) 2014-12-17
WO2010100604A1 (en) 2010-09-10

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