Chair Controller Electric Wheel

4, this system includes, in addition to a pair of steering actuators 18, also separate positioning elements 31 and comparators 30. Depending on the degree of handicap, different systems and constructions of wheel-chairs are employed.

However, the wheel-chair may be designed differently with respect to the seat assembly and its other structure.
We have even included electronic traction control to ensure a smooth start without wheelspin. .

thanks it's NOT ok to contact this poster with services or other commercial interests if the poster didn't include a phone number, email, or other contact info, craigslist can two step dance song notify them via region free dvd burner email. Simply walk behind with your thumb on the control and let the Powerpack do all the work for you. Accordingly, the swivel wheels 5, with the couplings engaged, are turned to the set or selected position through the steering actuator 18. As dual layer dvd shrink the seat assembly is adapted to be rotated to a corresponding position, the swivel wheels may be operated alternatively as the front wheels or the rear wheels of the wheel-chair. The wheel-chair of claim 1, wherein the control unit has means for selectively activating drive unit performance of annapolis bow cinemas tie wheel-chair steering maneuvers when steering actuators are coupled to the swivel wheels.

Preferably, the selectively engageable positive steering system is coordinated with the difference in speed of rotation of the drive wheels. In electric wheel-chairs of this type, the larger drive wheels are normally use not only for propulsion, but also for steering purposes, because the (turning) direction is determined by the difference in speed of rotation of the drive wheels.

For operation of the steering unit, the position of the swivel wheels is monitored or detected by position sensors (not illustrated, either). 100, 180/907, 180/443 A61G5/04; B60L15/20; A61G5/00; A61G5/04 180/967, motorcycle show in chicago 180/329, 180/330, 180/6. A chassis 1 comprises large drive wheels 3 mounted on an axle 2, and pivotally mounted swivel wheels 5 suspended from wheel forks 4.
Once fitted you will never need to push the chair again.
Special embodiments and further developments of the invention are disclosed in the subclaims. one toothed belt 14 for each wheel, transmits the rotary motion of the steering drive means to shaft 15 of the respective wheel fork 16. 1 shows in side elevational view a combination electric wheel-chair. Switch-over from pivoting to steering operation is monitored by position sensors provided on the swivel wheels. . Jet Pro lll 2004 gulf news dubai classified model/ electric wheel chair testing for mold and mildew email this posting to a friend Avoid scams and fraud by dealing locally! Beware any deal involving Western Union, Moneygram, wire transfer, cashier check, money order, shipping, escrow, or any promise of transaction protection/certification/guarantee. The wheel-chair coronation street past episode of any one of claims 1-3, further comprising a swivel angular position detector proximal to each swivel wheel that is coupled to the corresponding swivel wheel actuator. The standard twin-wheel model with the same user weight limit but much greater traction – really effective on loose gravel and wet grass. . 4, except that the mechanical connection to the second swivel wheel 5 is missing and, accordingly, the coupling 17 and the position detecting unit 32 or 33, respectively, are provided only for the positively steered swivel wheel 5. Externally the compact motor and gearbox unit has been re-designed, although the ultra reliable internals remain the same.
A seat assembly (or group) 6 is rotatably mounted on the chassis 1 through a central column 7.
Various embodiments of this engageable steering drive means can be seen from FIGS. The standard single wheel version capable of transporting up to 18 stone user weight. The wheel-chair of claim 26, wherein the angular position detector is an optical sensor. In the wheel 5 shown at the right in FIG.
Your wheelchair folds as normal, allowing you to transport it exactly as before. The wheel-chair of claim 1, wherein the actuators brown jersey jim throwback are positioning motors and wherein the steering control signals are generated by a computer coupled to the positioning motors and the control unit. The output signal from these control units 35 is supplied to an AND gate 36 together with the signal provided by the switching unit 26. There is an on/off light with red, amber, green colour sequence advising battery condition, a pre-set speed control governing top speed and a thumb-operated speed control lever. , other requirements are imposed on this wheel-chair, e. By tilting the control stick 11 from the zero (neutral) position to the front or rear, a signal being proportional to the desired speed of travel is input to the drive system; virgin atlantic upper class the electric wheel-chair responds with a corresponding forward or reverse speed. The turning circle of the swivel wheels is selected (or set) via the respective steering actuator 18, with a steering angle computer 37 performing control of both steering drive means. Engagement of the positive steering system through couplings 17 takes place in the same manner as in FIG. This uses the very latest in micro-processor technology with a host of advanced safety features.

Generally, wheel-chairs serve to improve the mobility of people who lost their capability to walk or other body functions.

The key which operates the on/off switch is removable for safety and security. The wheel-chair of claim 12, further comprising a speed selector coupled to the computer so that the computer monitors selected speed and generates actuator control signals in response to the monitored speed.

In other respects, the function of the various elements is the same as described in conjunction with FIG. with respect to good reaction, good directional stability, capability of easily travelling across obstacles, good shock absorption, etc. This chair has very little use on it and looks and runs like new. Owing to the selective engagement of steering actuator means with the swivel wheels as according to the invention, use can be made of the advantages of both the free pivotability and the positive steering, as required. The heavy duty version is only available with twin wheels and is capable of transporting up to 26 stone. Change of direction of the electric wheel-chair is obtained solely through the difference iron age st louisdrm protected in speed of rotation of the pair of drive wheels. The wheel-chair of claim 1, wherein the actuators are positioning motors, the steering control signals are generated by a computer coupled to the positioning motors and the control unit, and the control unit has means for selectively activating drive unit performance of wheel-chair steering maneuvers when the steering actuators are coupled to the swivel wheels. We have no use for it anymore and has been just sitting around. The direction of travel is selected through the operating unit 10 by means of the control stick 11.

An electric wheel-chair comprising: both camera film side woman a chassis; a first axle having drive wheels, which is connected to the chassis; a pair of second axles which are connected to the chassis, each having a swivel wheel that is pivotable about an axis perpendicular to movement direction of the wheel-chair, so that the swivel wheels change steering radius in response to change in running direction of the wheel-chair; an actuator independently coupled to each swivel wheel for steering the wheel in response to steering san jose convention center control signals; a seat assembly mounted on the chassis; a drive unit coupled to each drive wheel for driving the wheel in response to maneuvering control signals indicative of desired wheel-chair maneuvers to be executed by the drive unit; an operating unit coupled to the drive units and the actuators for causing generation of the control signals; and means for selectively disengaging coupling of at least one of the swivel wheels from the actuator.
No more struggling up hills, ramps or uneven ground; just press the lever and enjoy the effortless transportation the Powerpack provides.
Pronto model M71 with joystick controll- Purchased 10/30/03. The present invention relates to an electric wheel-chair comprising a chassis which has large drive wheels mounted on a first axle group and smaller swivel wheels mounted on a second axle group, and which further includes a seat assembly, a drive unit for the drive wheels, and an operating unit for controlling the drive unit. To view PDFs, Loginor View patents that cite this patent Click for automatic bibliography generation 280/304.
A further modification of the same functional principle is illustrated in FIG.

3 is a plan view of a modified swivel wheel assembly; FIG.
In this structure, the second wheel 5 is freely rotatable (turnable) and not used for positive steering purposes.