Invalid cart and lift
OwnerHerman G. Nabingerinventor
Life of this patent
Estimating the term…
Abstract
An invalid cart and lift, designed primarily for use in hospitals and the like, is comprised of a horizontally disposed frame movable on two back wheels and a front steering wheel. A steering shaft, extending vertically from the front steering wheel, has at its upper end a drop down handle by which this cart it pulled and steered. A housing extending vertically from the frame supports a vertically movable seat. A manual crank operates through a mitre gear and a ball nut-screw combination to raise and lower the seat. A friction brake when engaged holds the seat at a desired level. A sanitary chin and chest rest adjustable to the invalid's height raises and lowers with the seat. A safety belt with a positive lock prevents the invalid from falling from the seat.
Claims8
An improved invalid cart and lift comprising:
- a horizontally disposed frame having a closed end and an end with an opening therein, the opening having a portion of the frame as its opposing side walls;
- a support wheel rotatably connected to each of the opposing side walls of the opening;
- a horizontally disposed platform integral with the closed end of the frame;
- a steering wheel supporting the closed end of the frame;
- a steering shaft operably connected to the steering wheel and extending upwardly therefrom;
- a handle for pulling and steering the cart connected to the upwardly extending portion of the steering shaft, with the handle, the steering shaft and the steering wheel being operably connected so that horizontal movement of the handle results in a corresponding movement of the plane of rotation of the steering wheel;
- a housing projecting vertically from the frame;
- a seat supported by the housing, the seat being vertically movable for raising and lowering a patient by means including a manually operated crank extending from the housing, a horizontal drive shaft actuated by the crank, a vertical threaded driven shaft, a mitre gear for transmitting the rotation of the drive shaft to the driven shaft, with the mitre gear, the drive and the driven shafts being for the most part contained in the housing, and a ball nut forming a part of the seat, the ball nut being operably connected to the vertical threaded driven shaft whereby rotation of said shaft effects vertical movement of the ball nut and therefore the seat;
- and
- braking means to slow or totally stop the downward vertical movement of the seat, the braking means including a disc operably connected to rotate with one of said drive and driven shafts, a band having two ends with one end anchored securely, the band being wrapped over a portion of the disc, spring means, operably connected to the other end of the band, biasing the band into frictional engagement with the disc, and brake release means which when actuated relieve the biasing effect of the spring means.
An improved invalid cart and lift comprising:
- a horizontally disposed frame having a closed end and an end with an opening therein, the opening having a portion of the frame as its opposing side walls;
- a support wheel rotatably connected to each of the opposing side walls of the opening;
- a horizontally disposed platform connected to the frame at its closed end;
- a steering wheel supporting the closed end of the cart and lift;
- a steering shaft operably connected to the steering wheel and extending upwardly therefrom;
- a handle for pulling and steering the cart and lift, the handle being connected to the upwardly extending portion of the steering shaft and extending horizontally therefrom, the handle, steering shaft and steering wheel being operably connected so that horizontal movement of the handle causes a horizontal movement of the plane of rotation of the steering wheel;
- a housing projecting vertically from the frame;
- a seat supported by said housing;
- means to move the seat vertically;
- brake means to slow or stop the downward vertical movement of the seat including a disc operably connected to rotate with one of said drive and driven shafts, a band having two ends with one end anchored securely, the band being wrapped over a portion of the disc, spring means, operably connected to the other end of the band, biasing the band into frictional engagement with the disc, and brake release means which when actuated relieve the biasing effect of the spring means;
- and
- a chin rest unit movable vertically with the seat, the unit being adjustable in the vertical direction independent of the seat.
Dependencies are inferred from the claim text.