Gurney system for transporting injured persons

A motorized gurney system for transporting an injured person, comprising:

• a. a suspension frame operable to support a litter configured to secure the injured person;
• b. a wheel and a central hub including a drive motor, a strain-wave gear assembly coupled directly to an output shaft of the drive motor, and a braking system positioned within the central hub, the strain-wave gear assembly being operable to transmit torque from the drive motor to the wheel through a high-ratio reduction stage that provides increased torque density and substantially reduced mechanical backlash, the central hub being configured to propel the gurney system across multiple terrains;
• and
• c. a plurality of dampers positioned around a perimeter of the suspension frame, the dampers operable to absorb vibrations along multiple axes to stabilize the litter.

A motorized gurney system for transporting an injured person, comprising:

• a. a suspension frame operable to support a litter configured to secure the injured person;
• b. a wheel and a central hub including a drive motor and a regenerative braking system positioned within the central hub, the regenerative braking system being operable to apply a reverse torque through the drive motor during deceleration to convert kinetic energy of the gurney system into electrical energy;
• and
• c. a battery assembly electrically connected to the regenerative braking system and configured to receive and store the electrical energy generated during braking for subsequent propulsion of the gurney system.

A method of operating a motorized gurney system, the method comprising the steps of:

• a. propelling the gurney system by actuating a throttle lever located on a handle of a suspension frame to transmit a control signal to a drive motor positioned within a central hub;
• b. transmitting torque from the drive motor to a wheel through a reduction gear
• assembly enclosed within the central hub;
• c. decelerating the gurney system by actuating a braking mechanism positioned within the central hub, the braking mechanism being operable to apply a reverse torque through the drive motor to generate electrical energy;
• and
• d. routing the electrical energy generated during braking to a battery assembly electrically connected to the central hub for energy recovery and storage.

A motorized gurney system for transporting an injured person, comprising:

• a. a suspension frame operable to support a litter configured to secure the injured person;
• b. a wheel assembly having a central hub enclosing a drive motor, a strain-wave gear assembly coupled to an output shaft of the drive motor, and a braking system, wherein the strain-wave gear assembly is configured to transmit torque to the wheel through a high-ratio reduction stage providing increased torque density and reduced backlash;
• c. a regenerative braking system integrated within the central hub and operable
• to apply reverse torque through the drive motor during deceleration to convert kinetic energy of the gurney system into electrical energy;
• d. a motor controller in electrical communication with the drive motor and the regenerative braking system, the motor controller being configured to regulate bidirectional current flow through the drive motor and route recovered energy to a battery assembly positioned within the suspension frame;
• and
• e. a dual-mode braking configuration in which mechanical braking through the braking system and regenerative braking through the drive motor occur concurrently to provide controlled deceleration and simultaneous energy recovery.