# US 9,872,805 B2 · Auxiliary mobility system for a wheelchair > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,872,805 B2 - Document ID: US9872805B2 - Status: Granted - Kind: B2 - Application number: 14/903,060 - Filed: 2014-07-08 - Published: 2016-11-03 - Granted: 2018-01-23 - Earliest claimed: 2013-07-08 - Assignees: Batec Mobility, S.L. - Applicants: Batec Mobility, S.L. - Inventors: Pablo Alejandro Bach Castillo - Web page: https://patentgrep.com/patent/US9872805B2 ## CPC - A61G 5/10: Parts, details or accessories - A61G 5/021: {having particular propulsion mechanisms} - A61G 5/027: {by using auxiliary detachable mechanisms} - A61G 5/042: {Front wheel drive} - A61G 5/047: {by a modular detachable drive system} - A61G 5/1005: {Wheelchairs having brakes (braking mechanisms; locking devices against movement for hand carts B62B5/04; details of brake actuators on castors B60B33/0078; brakes in general F16D49/00 - F16D65/853)} - A61G 5/1051: {Arrangements for steering} - B62K 3/16: specially adapted for disabled riders (invalid multi-track cycles A61G5/00) - B62K 5/025: power-driven - A61G: TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS (appliances for aiding patients or disabled persons to walk A61H3/00); OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES (embalming corpses A01N1/00) - B62K: CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE ## Abstract The invention relates to an auxiliary mobility system for a wheelchair, comprising a frame, at least one wheel-bearing part and at least one steering element or handlebar, said bearing part being connected to the frame such that it can rotate concentrically about its axial axis under the action of the steering element. The system also comprises means for rotating the bearing part concentrically in relation to an axis substantially parallel to the rotation axis of the wheel. ## Claims ### Claim 1 An auxiliary mobility system adapted to be mechanically connected to a wheelchair, said auxiliary mobility system comprises: a frame, a fork adapted to bear a wheel, and at least one steering element or handlebar, wherein said fork rotates concentrically in a sleeve about an axial axis under the action of the steering element or the handlebar; wherein said frame comprises plates for securing said sleeve, said plates having elongated guiding slots for vertically regulating the frame in relation to a proximal end of a rod having a coupling system at its distal end adapted to be coupled to the wheelchair; wherein said sleeve is adapted to pivot concentrically between said plates in relation to an axis substantially parallel to a rotation axis of the wheel; and wherein the rod having an implement at its proximal end movable along the elongated guiding slots and adapted to be fixed in any position along the elongated guiding slots. ### Claim 2 (depends on 1) The auxiliary mobility system according to claim 1, further comprising a telescopic rod for horizontally regulating a horizontal distance between the frame and a coupling system adapted to be coupled to the wheelchair in the longitudinal direction of the movement of the wheelchair. ### Claim 3 (depends on 1) The auxiliary mobility system according to claim 1 wherein the implement is fixed using screwing elements. ### Claim 4 (depends on 1) The auxiliary mobility system according to claim 1 wherein the sleeve comprises at least one protrusion adapted to fit in at least one of a plurality of openings in the plates. ### Claim 5 (depends on 1) The auxiliary mobility system according to claim 1 wherein the steering element or handlebar can move in the axial direction of the fork. ### Claim 6 (depends on 1) The auxiliary mobility system according to claim 1 wherein a concentric axis around which said sleeve is adapted to pivot and the rotation axis of the wheel are coincident. ### Claim 7 (depends on 1) The auxiliary mobility system according to claim 1, further comprising a motor. ### Claim 8 (depends on 1) The auxiliary mobility system according to claim 1, further comprising a rack-and-pinion system which is manually actuated and exerts a traction force on the wheels. ### Claim 9 (depends on 7) The auxiliary mobility system according to claim 7, wherein the motor is connected to the wheel. ### Claim 10 (depends on 9) The auxiliary mobility system according to claim 9, further comprising a battery system enabled to supply power to the motor. ### Claim 11 (depends on 1) The auxiliary mobility system according to claim 1, further comprising a disc braking system. ### Claim 12 (depends on 1) The auxiliary mobility system of claim 1, wherein said fork is bearing a wheel and said coupling system is coupled to said wheelchair. ### Claim 13 (depends on 1) The auxiliary mobility system of claim 1, wherein said sleeve moves between said plates in a pivoting direction in relation to said axis substantially parallel to said rotation axis of the wheel. ### Claim 14 An auxiliary mobility system, comprising: a frame; a sleeve positioned and secured on the frame; and a fork for bearing a wheel and attached to a steering element or handlebar; wherein the fork being housed inside the sleeve such that the fork rotates about a longitudinal axis of the fork; wherein the sleeve is adapted to pivot with respect to the frame around a pivoting axis parallel to a rotation axis of said wheel, such that a degree of inclination is conferred to the sleeve and therefore to the fork in relation to a horizontal axis, said pivoting axis is located between a lower end of the sleeve and the rotation axis of the wheel. ### Claim 15 An auxiliary mobility system, comprising: a frame having two parallel plates between which a sleeve is positioned and secured; and a fork for bearing a wheel and attached to a steering element or handlebar; wherein the fork is housed inside the sleeve such that the fork rotates about a longitudinal axis of the fork; wherein the sleeve is adapted to pivot with respect to the frame, such that a degree of inclination is conferred to the sleeve and therefore to the fork in relation to a horizontal axis; wherein the sleeve comprises at least one protrusion adapted to fit in at least one of a plurality of openings in the two parallel plates; and wherein said degree of inclination is determined according to a fit of said at least one protrusion and said at least one of said plurality of openings.