Patent ID: 9585801
Date: 2017-03-07
CPC Classifications: A61G,B62K

Claim:
1. A powered mobility device including two wheeled powered wheel chair that is able to be steered with or without the use of hands, wherein the powered mobility device includes: (i) two drive wheels mounted on a shaft; (ii) a drive control means drivingly coupled to the shaft; (iii) a tiltable seat such that the seat is adapted to tilt in a forward, backward, left and right directions as a result of a user shifting their body weight in either of those directions., the seat is mounted to a tilt mechanism such that the seat is able to tilt in a forward, backward, left and right directions as a result of the user shifting their body weight in either of those directions, the tilt mechanism includes at least primary and secondary pivots, where the primary pivot is mounted to the shaft so as to allow the tilt mechanism to tilt the seat in a forward and backward direction, and the secondary pivot is spaced a distance above the primary pivot so that the secondary pivot is situated between the seat and the shaft such that the secondary pivot allows the seat to tilt back or forward about the secondary pivot so as to enhance the offset of weight transfer so as to cause increased control of the back or forward tilt of the seat relative to the shaft; (iv) a weight displacement sensing means connectable to the tilt mechanism and the drive control means such that upon sensing a weight displacement of a user in a particular direction the weight displacement sensing means causes the drive control means to impart drive to the drive wheels to move the mobility device in the direction of the sensed displaced weight of the user so that the mobility device is able to be driven in a forward and backward direction and steered in a left or right direction; (v) a tilt locking means adapted to selectively lock the tilt mechanism, the tilt locking mechanism includes a hydraulic system connected to the tilt mechanism, the hydraulic system incorporates a line locker to lock the movement of the seat in the right and left directions when the hydraulic system is activated; and (vi) a hand control means selectively engageable the weight displacement sensing means such that when the tilt locking means is activated steering control in the left and right directions is transferred from the tilt mechanism to the hand control means such that hand control means when moved left or right causes the weight displacement sensing means to cause the drive control means to steer the mobility device in a desired direction.