Browse Prior Art Database

A REGENERATIVE BRAKING UNIT FOR A PERSON-SUPPORT APPARTUS

IP.com Disclosure Number: IPCOM000245600D
Publication Date: 2016-Mar-21
Document File: 4 page(s) / 147K

Publishing Venue

The IP.com Prior Art Database

Abstract

Relates generally to person-support apparatus. More specifically, but not exclusively, one illustrative embodiment relates to a regenerative braking unit for a person-support apparatus.

Steve Hankins shankins@rshc-law.com

This text was extracted from a Microsoft Word document.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 46% of the total text.

A Regenerative Braking unit for a Person-Support apparatus

The present disclosure relates generally to person-support apparatus. More specifically, but not exclusively, one illustrative embodiment relates to a regenerative braking unit for a person-support apparatus.

Normally, a person-support apparatus can be provided with casters for an easy movement of the person-support apparatus in the hospital. These person-support apparatus can also be equipped with a braking mechanism to stop the movement of the bed when the caregiver wishes to keep the device stationary. Various beds, especially the stretchers include a motor driven mechanism to drive the wheels of the beds. These beds include electric brakes to prevent the movement. The process of braking normally consumes energy from the batteries. The person-support apparatus also uses the battery for various other purposes thereon. Over a period of time, the batteries discharge during operation. While various other methods and devices have been developed to conserve the energy of the batteries and increase the life time of batteries on the person-support apparatus, there is still room for improvement. Thus, a need persists for further contributions in this area of technology.

The disclosure provides a system for the conservation of energy and improving the efficiency of the batteries present on a person-support apparatus using a regenerative braking mechanism. The person-support apparatus includes a fifth wheel, a battery unit, a braking unit and a control circuit. The fifth wheel is driven by an electric motor to drive the person-support apparatus.  The battery unit provides the power supply to operate the motor. As the brakes are applied using the braking unit, the control circuit results in the reversal of current flow in to the motor. The reversal of current flow slows down the rotation of motor. Along with it, the reverse flow of current recharges the battery unit present on the person-support apparatus.

A block diagram of a system 10 to be used on a person-support apparatus (not shown) is shown in Fig. 1. The system 10 is configured to conserve the energy on the person-support apparatus. The system 10 makes use of a regenerative braking mechanism on the person-support apparatus.

A perspective view of a lower frame 12 from the downward side is shown in Fig. 2. The person-support apparatus includes a lower frame 12, an upper frame (not shown) and a plurality of supports (not shown) present between the lower frame 12 and the upper frame. The lower frame 12 is supported on a plurality of casters 14, for example four as shown in Fig. 2. The plurality of casters 14 are configured to move the person-support apparatus. The lower frame 12 further includes a fifth wheel 16. The fifth wheel 16 is configured to drive the person-support apparatus using an electrical motor 18 or a motor 18. The electrical motor 18 is an inductive motor works on the principle of induction. The motor 18 is connected with...