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US 4,944,372 AGranted
Electrically actuated braking system
AssigneeAllied-Signal Inc.
InventorAlistair G. Taig
Life of this patent
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AssigneeAllied-Signal Inc.
InventorAlistair G. Taig
Estimating the term…
The electrically actuated braking system (10) comprises a controller mechanism (14) that may be activated by a switch (12). The controller mechanism (14) sends a signal to an electric drive motor (20), and receives braking force signals from a sensor (16) connected to one of two braking members (18, 19) connected with the drive motor (20). The drive motor (20) is operated by the controller mechanism (14) in order to rotate a drive member (31) of a load-equalizing differential (30), the load-equalizing differential (30) being connected by a flexible drive connection mechanism (50) with the braking members (18, 19). The load-equalizing differential (30) comprises the drive member (31) having a plurality of circumferentially spaced-apart openings (34) each of which receives therein a ball member (36, 36A). Disposed about the drive member (31) and balls (36, 36A) and facing each other are two plates (40, 42) each of which is connected with a segment of the flexible drive connection mechanism (50). Each plate (40, 42) has series of ramps (44) and cam tracks (46) which are shaped complementary to the ramps (44) and cam tracks (46) of the other plate (40, 42). Rotation of the drive member (31) by the drive motor (20) causes rotation of the plates (40, 42) so that equal torque may be applied, via the flexible drive connection mechanism (50), to the braking members (18, 19).
An electrically actuated braking system, comprising controller means connected with drive motor means, the controller means for sending signals to control operation of the drive motor means, the drive motor means operating a load-equalizing differential which is connected with flexible drive connection means, the flexible drive connection means connected with brake members, the load-equalizing differential comprising a drive member disposed between two opposed plates and having a plurality of openings receiving therein ball means, each opposed plate having ramps connected with cam tracks, the ramps and cam tracks of one plate shaped complementary with the ramps and cam tracks of the opposed plate, the controller means effecting operation of the drive motor means which rotates the drive member, rotation of the drive member effecting via the ball means rotation of the opposed plates which move relative to one another so that equal torque is transmitted to the brake members.
A load-equalizing differential, comprising a drive member disposed between two opposed plates and having a plurality of openings receiving therein ball members, each opposed plate having ramps connected with cam tracks, the ramps and cam tracks of one plate shaped complementary with the ramps and cam tracks of the opposed plate, the ball members engageable with the ramps and cam tracks, and each plate connected to a flexible connection connected with a respective brake member, so that operation of the drive member effects via the ball members operation of the opposed plates which move relative to one another so that equal torque is transmitted thereby.
An electrically actuated braking system, comprising controller means connected with drive motor means, the controller means for sending signals to control operation of the drive motor means, the drive motor means operating a load-equalizing differential which is connected with flexible drive connection means, the flexible drive connection means connected with brake members, the load-equalizing differential comprising a drive member and two opposed and symmetrically shaped members having engaging means therebetween, the controller means effecting operation of the drive motor means which rotates the drive member, rotation of the drive member effecting rotation of the symmetrically shaped members and engaging means so that equal torque is transmitted to the brake members, the differential effecting the differentiation of torque in an apply direction of rotation and locking together the shaped members in a reverse direction of rotation.
A load-equalizing differential, comprising a drive member disposed between two opposed plates and having a plurality of openings receiving therein ball members, each opposed plate having ramps connected with cam tracks, the ramps and cam tracks of one plate shaped symmetrical with the ramps and cam tracks of the opposed plate, the ball members engageable with the ramps and cam tracks so that operation of the drive member effects via the ball members operation of the opposed plates which move relative to one another so that equal torque is transmitted by half of the ball members, the differential effecting the differentiation of torque in an apply direction of rotation and locking together the plates in a reverse direction of rotation.
Dependencies are inferred from the claim text.