Patient transport apparatus with auxiliary wheel control systems
US12178757B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2020 |
| Grant date | Dec 31, 2024 |
| Priority date | — |
| Expiry date | Jul 2, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/40
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A patient transport apparatus for transporting a patient over a floor surface is described herein. The patient transport apparatus includes a throttle assembly, an auxiliary wheel assembly including an auxiliary wheel, an auxiliary wheel drive system, and a control system for operating the auxiliary wheel drive system based on user commands received from the throttle assembly. The control system includes a controller configured to detect a position of the throttle assembly, determine a desired rotational speed value associated with a current operating throttle position, determine a current rotational speed of the auxiliary wheel, select an acceleration rate based on the current rotational speed of the auxiliary wheel, generate an output signal based on the selected acceleration rate, and transmit the generated output signal to the motor control circuit to operate the motor to rotate the auxiliary wheel at the selected acceleration rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.