User propelled wheelchair with combined propulsion and steering controls

    公开(公告)号:GB2456077A

    公开(公告)日:2009-07-08

    申请号:GB0903996

    申请日:2007-05-25

    Applicant: MORGAN TIM

    Inventor: MORGAN TIM

    Abstract: A wheelchair comprises wheels 1 driven by a propulsion system comprising reciprocating levers 5. The lever may include a freewheel element and may be connected to the wheel 1 by means of a chain 3 and sprockets 4. The wheel may be suspended using a swing arm 6 supported by a spring element 7. The swing arm 6 and propulsion lever 5 may pivot about a common axis, ensuring that propulsion is unaffected by the suspension. Directional control is provided by a steering mechanism comprising a single pivoting lever 13 controlled by the user's hand and connected to a pivotable steering wheel. The steering lever may be connected to the steering wheel by means of cables.

    User propelled wheelchair using arm actuated levers

    公开(公告)号:GB2449496A

    公开(公告)日:2008-11-26

    申请号:GB0710054

    申请日:2007-05-25

    Applicant: MORGAN TIM

    Inventor: MORGAN TIM

    Abstract: A wheelchair fitted with propulsion and steeling mechanisms enables wheelchair users to travel effectively over rough and sloped terrain. The wheelchair consists of front wheels 1 which are driven via a propulsion system consisting of chain and sprockets, 3, 4 and a propulsion lever 5 including a freewheel element. A sprung suspension strut 7 may facilitate vertical displacement of the ground contacting wheel. The propulsion system may be supported by a swing arm 6 which pivots about the same point as propulsion lever 5, such that propulsion is unaffected by vertical displacement of the ground contacting wheel. Directional control may be provided by a steering mechanism consisting of a pivoting lever 12 and cables, which cause a rear steeling wheel 2 to steer the device. This steering system may be supported by member 9 and suspension strut 10, such that vertical displacement of the steering wheel cushions impacts from an uneven ground surface.

    Concept drive
    4.
    发明专利

    公开(公告)号:GB0215703D0

    公开(公告)日:2002-08-14

    申请号:GB0215703

    申请日:2002-07-06

    Applicant: MORGAN TIM

    Steering mechanism for an all terrain wheelchair

    公开(公告)号:GB2488141A

    公开(公告)日:2012-08-22

    申请号:GB201102759

    申请日:2011-02-17

    Abstract: A vehicle such as an all terrain wheelchair includes three or more ground engaging wheels 1, 16, and a steering assembly which allows a single user-actuated lever 19 to control the direction of steered wheel 16. The steering assembly includes a mounting member 13 having actuation means 49 operated by the lever, a steering member 43, and a bearing 47. The steering member 43 rotates coaxially with the bearing 47 about the steering axis of the steered wheel, and the mounting member, actuation means and steering member are detachable as a single unit. The wheelchair includes suspension means 12 allowing vertical displacement of the steered wheel. The mounting member is preferably detachably held in place by an engagement member 44, which may comprise a bush-button release mechanism 50. The actuation means are preferably cables which cause the steering member to rotate about the steering axis when the lever is pivoted. The wheelchair preferably includes front wheels 1 driven by a propulsion system 2, 4, 5 operated via reciprocal motion of levers 20. The suspension means may comprise an air spring damper 12, a coil spring (see figure 4), or a torsion spring (see figure 5).

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