The invention relates to a process for preparing a wheelchair frame (7) comprising: a) preparing parts or segments (4) of the wheelchair frame from a sacrificial material; b) applying a curable lightweight material to the parts or segments (4) obtained in step a); c) curing the parts or segments (4) obtained in step b); d) removing the sacrificial material in order to obtain hollow frame parts or hollow frame segments of the wheelchair made from the curable lightweight material.
B29C 33/52 - Moulds or coresDetails thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles soluble or fusible
B29C 70/30 - Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or coreShaping by spray-up, i.e. spraying of fibres on a mould, former or core
B33Y 80/00 - Products made by additive manufacturing
2.
BRAKE-ACTUATING DEVICE WITH ELECTRONIC SIGNAL DEVICE AND DRIVING OR PULLING DEVICE HAVING SUCH A BRAKE- ACTUATING DEVICE AND WHEELCHAIR HAVING SUCH A DRIVING OR PULLING DEVICE
The invention relates to a brake-actuating device (1) comprising a fastening device (3) which is designed to be able to be mounted at least in a rotationally fixed manner on a control device of the vehicle, in particular on a steering rod (20) , a switch device (5) comprising at least one controlling and transmitting element which is designed to control a brake system of the vehicle, and an in particular electrical signal device (31), wherein the switch device (5) is rotatably connected to the fastening device (3), and a rotation movement of the switch device (5) relative to the fastening device (3) controls the brake system and also the at least one electrical signal device (31). The invention also relates to a driving or pulling device having such a brake-actuating device (1) and to a wheelchair having such a driving or pulling device.
The invention relates to a process for preparing a wheelchair frame (7) comprising: a) preparing parts or segments (4) of the wheelchair frame from a sacrificial material; b) applying a curable lightweight material to the parts or segments (4) obtained in step a); c) curing the parts or segments (4) obtained in step b); d) removing the sacrificial material in order to obtain hollow frame parts or hollow frame segments of the wheelchair made from the curable lightweight material.
A61G 5/02 - Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person
The invention relates to a side support for a postural support seat, comprising at least one support element for exerting a force on a user sitting in the postural support seat; at least a first hinge element and at least a second hinge element forming a joint-link chain, wherein the support element is attached to a first end of the joint-link-chain; and at least one attachment element, wherein a second end of the joint-link-chain, being opposite to the first end is connected to the attachment element, and wherein the attachment element is adapted to be connected to the postural support seat.
The invention relates to a backrest assembly (1, 100, 200) for a wheelchair with a backrest frame (20, 120, 220) pivotally connected to a seat or seat frame (10), a carrying means (30, 130, 230) provided by or attached to the backrest frame (20, 120, 220), a rotating means (40, 40', 140, 240) rotatable secured to the carrier means (30, 130, 230), a first sliding means (50, 150, 250) slidable connected to the backrest frame (20, 120, 220) on the rear side of the backrest assembly (1, 100, 200) and connected to the rotating means (40, 40', 140, 240) via a first mechanical link, a second sliding means (60, 60',160, 260) slidable secured to the backrest frame (20, 120, 220) on the front of the backrest assembly (1, 100, 200) and connected to the rotating means (40, 40', 140, 240) via a second mechanical link, and an actuator (70, 170, 270) for adjusting the backrest assembly (1, 100, 200) between an upright and reclined position with the actuator (70, 170, 270) being connected to the first sliding means (50, 150, 250) for driving the second sliding means (60, 60',160, 260) via the rotating means (40, 40', 140, 240) to perform a sinusoidal movement.
A wheelchair frame assembly comprises a frame member having a first leg adapted to support a seat and a second leg configured to support a caster wheel. An axle mounting assembly connects an axle tube to the frame member. The axle mounting assembly includes an axle tube mount, a frame mount, and a spacer. The spacer is configured to alter the distance between the frame member and the axle tube and transfer longitudinal forces between the axle tube mount and the frame mount.
B62D 21/03 - Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members transverse members providing body support
B62M 1/14 - Rider propulsion of wheeled vehicles operated exclusively by hand power
8.
Wheelchair having pivoting backrest frame assembly
A wheelchair comprises a base frame, a backrest frame and a hinge assembly. The base frame has first and second side frame members. The hinge assembly connects the backrest frame to a portion of the base frame for selective pivotal movement. The hinge assembly includes a locking mechanism configured to provide selective discrete locking positions of the backrest relative to the base frame. The locking mechanism includes a locking pin and a plurality of cooperating locking apertures. The locking pin is adapted to selectively engage one of the plurality of locking apertures to define a backrest angle relative to the base frame. One or more plugs are adapted to engage one or more of the plurality of locking apertures to prevent the locking pin from cooperating with the plugged locking aperture.
A caster strut for a wheelchair frame of a type including left and right frame members (9, 10) arranged on opposite sides of a central axis aligned with direction (d) of displacement of the wheelchair, in use, each frame member (9, 10) including a first leg (11, 12) for supporting a seat that transitions into a second leg (13, 14) depending downwardly, in use, includes a first longitudinal section (34), terminating at an end of the caster strut that is configured for attachment of the first longitudinal section (34) to the second leg (13, 14) of one of the first and second frame members (9, 10) at an angle thereto. The caster strut also includes a second longitudinal section (35), terminating at an end (41) of the caster strut for connection with a caster wheel assembly (4, 5), so as to be supported by the caster wheel assembly (4, 5), in use. The caster strut includes a curved section (36), via which the first longitudinal section (34) transitions into the second longitudinal section (35).
A wheelchair frame includes left and right frame members (9, 10), each including at least a first leg (11, 12) for supporting a seat, arranged on opposite sides of a central axis aligned with a direction of displacement (d) of the wheelchair, in use. At least one cross- brace (19) is connected to the first legs (11, 12) of the left and right frame members (9, 10) at its ends, and has a non-circular cross-section along at least a section (34) between the ends. Alternatively, the wheelchair frame further includes left and right second frame members (29, 30), pivotably connected to the left and right frame members (9,10) and arrestable in a position in which they are oriented in a direction predominantly parallel to the first legs (11, 12) of the left and right frame members (9, 10). In that case, at least one cross-brace (33) is connected to the left and right second frame members (29, 30) at its ends, and has a non-circular cross-section along at least a section (37) between its end.
A method of manufacturing a member (9, 10) of a wheelchair frame includes providing a tubular member (29). The tubular member (29) is bent into a desired shape. A cross-sectional shape of at least a section of the tubular member (30) is adjusted. The step of adjusting the cross-sectional shape is carried out after the step of bending the tubular member (29) into the desired shape. A wheelchair frame includes left and right tubular frame members (9, 10) for supporting a seat, each including a curved section (15, 16). At least the curved section (15, 16) has a non-circular cross-sectional shape.
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