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Reac Ab patents


Recent patent applications related to Reac Ab. Reac Ab is listed as an Agent/Assignee. Note: Reac Ab may have other listings under different names/spellings. We're not affiliated with Reac Ab, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "R" | Reac Ab-related inventors


Electric motor arrangement adapted for use in an actuator and an actuator including the motor arrangement

This invention relates to a linear type actuator unit, said actuator unit (100), including an electric motor (1) driving a linear actuator (2) of, said motor (1) having a casing (11), a stator (14,15) fixed to the casing, a rotor (13) fixed to a rotary part (10), preferably a rotary motor shaft (10), wherein said rotary part (10) is arranged to be operatively connected to a reduction gear (5) which drives the mechanical output of the actuator (2), a separate magnetic brake unit (3), said magnetic brake (3) including a rotating brake member (30,31) connected to the motor shaft (10), directly or indirectly, and a plurality of fixed brake members (32, 33), wherein said magnetic brake (3) is arranged to produce a torque that will strive to position a rotary member (10, 20) with said rotating brake member (30,31) into one or more specific angular positions in relation to the fixed brake members (32, 33), and wherein said rotating brake member (30,31) is in the form of a separate annulus (30, 31) attached to said rotary member (10, 20) arranged to brake the motor at low rotational speeds and in that the actuator unit (100) is arranged with a circuitry (101) including a short circuiting arrangement (113, 103) arranged to enable braking of the motor (1) at rotational speeds above low rotational speeds.. . ... Reac Ab

Linear actuator device

This invention relates to a linear actuator, comprising an electric motor (10), a worm gear (13, 14), a transmission (15, 16, 19), an outer tube (2) and a spindle (12), said spindle (12) being in connection with the transmission (15, 16, 19), a spindle nut (11) on the spindle (12), a thrust bearing (20) for supporting a shaft end (21) of the spindle (12), wherein the connection between the shaft end of the spindle (12) and the transmission (15, 16, 19) allows a mutual axial movement so that axial forces are only lead through the spindle (12) bypassing the transmission (15, 16, 19) and directly to the thrust bearing (20), wherein a support structure (17, 18, 24, 28) fixedly connects the outer tube (2) and a lower bracket (20, 22), wherein said worm gear (13, 14) drives a shaft (19) included in said transmission (15, 16, 19), which shaft (19) has a driving gear wheel (15) fixedly attached thereto, arranged to transmit torque to a driven gear wheel (16) fixedly attached to the spindle (12), wherein said transmission (15, 16, 19) is arranged to allow axial displacement of the driven gear wheel (16) in relation to the driving gear wheel (15).. . ... Reac Ab

Powered wheelchair

The invention relates to a powered wheelchair (100, 200) for transporting a person comprising a seat frame (40) for supporting the person, a pair of opposing drive wheel assemblies (20, 30) configured to drive said powered wheelchair (100, 200) and connected to the seat frame (40), and a supporting wheel assembly (50) arranged spaced apart from the pair of opposing drive wheel assemblies (20, 30) and connected to the seat frame (40). The pair of opposing drive wheel assemblies (20, 30) comprising a first drive wheel assembly (20) and a second drive wheel assembly (30). ... Reac Ab

Hubless wheel motor

The present invention relates to a drive system for an electric vehicle comprising: a wheel rim, a bearing arrangement, a plurality of rotor elements circumferentially arranged along a circumference coaxial with a circumference of the wheel rim and fixated to the wheel rim adjacent to the bearing arrangement; and a plurality of stator elements circumferentially arranged along a circumference coaxial with the circumference of the rotor elements and spaced apart from the rotor elements, the stator elements are non-rotationally arranged to the non-rotating portion of the bearing arrangement, whereby an air gap in is formed between a stator element and a rotor element, wherein a first distance from the axis of rotation to the bearing arrangement is larger than a second distance from the air gap to the bearing arrangement.. . ... Reac Ab

Caster wheel arrangement

A caster wheel arrangement for a powered wheelchair, the caster wheel arrangement comprising: a caster wheel module comprising: a wheel rotatably connected to a first linkage member, wherein the wheel is rotatably arranged about a first axis of rotation of the wheel; and a support element rotatably connected to the first linkage member through a joint configured to allow a rotation of the first linkage member relative to the support element around a second axis of rotation perpendicular to the first axis of rotation; a second linkage member connected to the support element at a third axis of rotation, wherein the third axis of rotation is essentially perpendicular to the second axis of rotation of the first linkage member, to allow rotation of the caster wheel module about the third axis of rotation, wherein the third axis of rotation passes adjacent to the second axis of rotation.. . ... Reac Ab

Powered wheelchair

The invention relates to a powered wheelchair (100) for transporting a person, comprising a seat frame (40) for supporting the person, a pair of opposing main wheel assemblies (20, 30), including a first main wheel assembly (20) and a second main wheel assembly (30) connected to the seat frame (40), and a third main wheel assembly (50) arranged spaced apart from the pair of opposing main wheel assemblies (20, 30) and connected to said seat frame (40). The powered wheelchair further comprises a support wheel arrangement (10) for supporting the powered wheelchair (100), said support wheel arrangement (10) having a main beam (12) and a front support wheel unit (14) capable of being applied to a ground surface (95). ... Reac Ab








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