Coaster hub with multiple disk brake

Claim 1

A COASTER HUB COMPRISING, IN COMBINATION: (A) A NORMALLY STATIONARY SHAFT HAVING AN AXIS; (B) A TUBULAR DRIVER MEMBER ROTATABLE ON SAID SHAFT ABOUT SAID AXIS IN A FORWARD DIRECTION AND IN A BACKWARD DIRECTION; (C) TWO ANNULAR BEARING MEMBERS RESPECTIVELY MOUNTED ON SAID SHAFT AND ON SAID DRIVER MEMBER FOR ROTATION ABOUT SAID AXIS IN AXIALLY SPACED RELATIONSHIP; (D) A HUB SHELL HAVING A UNIFORM CROSS SECTION TRANSVERSE OF SAID AXIS OVER MOST OF THE AXIAL LENGTH THEREOF, SAID HUB SHELL DEFINING A CAVITY THEREIN; (E) FASTENING MEANS FIXEDLY FASTENING RESPECTIVE AXIALLY TERMINAL PORTIONS OF SAID HUB SHELL TO SAID BEARING MEMBERS, (1) SAID HUB SHELL BEING FORMED WITH A PLURALITY OF AXIALLY ELONGATED CIRCUMFERENTIALLY SPACED RIBS ON THE OUTER FACE THEREOF AND WITH A PLURALITY OF AXIALLY ELONGATED CIRCUMFERENTIALLY SPACED GROOVES ON AN INNER FACE THEREOF IN SAID CAVITY, SAID GROOVES BEING RADIALLY ALIGNED WITH SAID RIBS AND DEFINING THEREBETWEEN RIBS ON SAID INNER FACE; (F) FREEWHEELING COUPLING MEANS INTERPOSED IN SAID CAVITY BETWEEN SAID DRIVER MEMBER AND SAID HUB SHELL; (G) A PLURALITY OF STATIONARY BRAKE DISKS AXIALLY JUXTAPOSED ON SAID SHAFT IN SAID CAVITY, SAID DISKS BEING AXIALLY MOVABLE ON SAID SHAFT AND SECURED AGAINST ROTATION RELATIVE THERETO; (H) A PLURALITY OF ROTATABLE BRAKE DISKS AXIALLY MOVABLE ON SAID HUB SHELL, RESPECTIVE PORTIONS OF SAID ROTATABLE BRAKE DISKS ENGAGING SAID GROOVES FOR SECURING SAID ROTATABLE BRAKE DISKS AGAINST ANGULAR MOVEMENT RELATIVE TO SAID HUB SHELL, EACH ROTATABLE BRAKE DISK BEING AXIALLY INTERPOSED BETWEEN TWO STATIONARY BRAKE DISKS, (1) SAID STATIONARY BRAKE DISKS AND SAID ROTATABLE BRAKE DISKS BEING MEMBERS OF A STACK OF COOPERATING BRAKE DISKS; (I) A PRESSURE MEMBER THREADABLY MOVABLE ON SAID DRIVER MEMBER ABOUT SAID AXIS TOWARD AND AWAY FROM AN OPERATIVE POSITION IN WICH SAID PRESSURE MEMBER AXIALLY COMPRESSES SAID STACK FOR BRAKING ENGAGEMENT OF SAID STATIONARY DISKS WITH SAID ROTATABLE DISKS; AND (J) FRICTION MEANS INTERPOSED BETWEEN SAID PRESSURE MEMBER AND SAID SHAFT FOR IMPEDING ROTATION OF SAID PRESSURE MEMBER AND FOR THEREBY MOVING SAID PRESSURE MEMBER AXIALLY TOWARD SAID OPERATIVE POSITION THEREOF WHEN SAID DRIVER MEMBER ROTATES IN SAID BACKWARD DIRECTION, AND FOR MOVING SAID PRESSURE MEMBER AXIALLY AWAY FROM SAID OPERATIVE POSITION THEREOF WHEN SAID DRIVER MEMBER ROTATES IN SAID FORWARD DIRECTION.