A patient support including a traction device and a motor for moving the patient support. A motor disconnect arrangement is provided to enable manually powered movement of the patient support.
대표청구항▼
The invention claimed is: 1. A patient support comprising: a frame; a plurality of wheels configured to support the frame on a floor; a traction device coupled to the frame and configured to provide mobility to the frame; a motor operably coupled to the traction device; a drive controller operably
The invention claimed is: 1. A patient support comprising: a frame; a plurality of wheels configured to support the frame on a floor; a traction device coupled to the frame and configured to provide mobility to the frame; a motor operably coupled to the traction device; a drive controller operably coupled to the motor, to control the motor; and a motor disconnect arrangement, coupled intermediate the drive controller and the motor, to disconnect the drive controller from the motor to enable manually powered movement of the patient support and to prevent the motor from functioning as an electronic brake. 2. The patient support of claim 1, wherein the motor disconnect arrangement comprises a circuit coupled intermediate the motor and the drive controller, the circuit including an open circuit mode and a closed circuit mode, wherein the open circuit mode enables manually powered movement of the patient support. 3. The patient support of claim 2, wherein the circuit comprises an override switch including a first position and a second position, wherein the first position enables the closed circuit mode and the second position enables the open circuit mode. 4. The patient support of claim 3, wherein the override switch comprises a user accessible portion to enable a user to move the override switch from the first position to the second position. 5. The patient support of claim 4, wherein the patient support includes a recess, the user accessible portion being disposed in the recess to prevent inadvertent movement of the override switch. 6. The patient support of claim 1, further comprising a user input device coupled to the drive controller, the user input device being operable to provide a signal to the drive controller to control the motor in response to the user input device. 7. The patient support of claim 6, wherein the user input device comprises a handle and a force sensing element, the handle being operably coupled to the force sensing element and the force sensing element providing the signal to the drive controller. 8. The patient support of claim 7, wherein the force sensing element comprises an elastic force sensing element. 9. The patient support of claim 8, wherein the elastic force sensing element comprises a load cell. 10. A patient support comprising: a frame including a plurality of wheels configured to support the frame on a floor; a traction device coupled to the frame; an actuator configured to move the traction device between a first position spaced apart from the floor and a second position in contact with the floor; a motor operably coupled to the traction device; a user input device being operable to provide a signal to control the motor in response to the user input device; a drive controller operably coupled to the user input device and to the motor, to control the motor; and a motor disconnect arrangement, coupled intermediate the drive controller and the motor, to disconnect the drive controller from the motor to enable manually powered movement of the patient support and to prevent the motor from functioning as an electronic brake. 11. The patient support of claim 10, wherein the motor disconnect arrangement comprises a circuit coupled to the motor and to the drive controller, the circuit configured to disconnect the drive controller from the motor when the traction device is in the second position. 12. The patient support of claim 11, wherein the circuit includes an open circuit mode and a closed circuit mode, wherein the open circuit mode enables manually powered movement of the patient support. 13. The patient support of claim 11, wherein circuit comprises an override switch including a first position and a second position, wherein the first position enables the closed circuit mode and the second position enables the open circuit mode. 14. The patient support of claim 10, wherein the user input device comprises a handle and a force sensing element, the handle being operably coupled to the force sensing element and the force sensing element providing the signal to the drive controller to control the motor. 15. The patient support of claim 14, wherein the force sensing element comprises an elastic force sensing element. 16. The patient support of claim 10, wherein the motor disconnect arrangement comprises an override switch including a position to disconnect the drive controller from the motor when the traction device is in the second position. 17. A patient support comprising: a frame including a plurality of wheels configured to support the frame on a floor; a traction device coupled to the frame; a motor, coupled to the traction device, adapted to cause the traction device to move the patient support; an electronic brake, coupled to the motor, having a braking mode to slow movement of the patient support; and an override switch coupled to the motor and located intermediate the electronic brake and the motor, to disengage the electronic brake from the braking mode. 18. The patient support of claim 17, wherein the override switch comprises a user accessible portion to enable a user to move the override switch to a position adapted to disengage the electronic brake from the braking mode. 19. The patient support of claim 18, wherein the traction device includes a first position spaced from the floor and a second position in contact with the floor. 20. The patient support of claim 19, wherein the electronic brake comprises a detector, adapted to sense power supplied by the power reservoir to the motor and to slow movement of the patient support when the sensed power is less than a predetermined amount. 21. A patient support comprising: a frame; a plurality of wheels configured to support the frame on a floor; a traction device coupled to the frame and configured to provide mobility to the frame; a motor operably coupled to the traction device; a drive controller operably coupled to the motor, to control the motor; and a motor disconnect arrangement, coupled to the drive controller and the motor, to disconnect the drive controller from the motor to enable manually powered movement of the patient support, wherein the motor disconnect arrangement includes a circuit coupled intermediate the motor and the drive controller, the circuit including an open circuit mode and a closed circuit mode, wherein the open circuit mode enables manually powered movement of the patient support, the circuit including an override switch having a first position and a second position, wherein the first position enables the closed circuit mode and the second position enables the open circuit mode, the override switch including a user accessible portion to enable a user to move the override switch from the first position to the second position, the patient support including a recess, the user accessible portion being disposed in the recess to prevent inadvertent movement of the override switch. 22. A patient support comprising: a frame; a plurality of wheels configured to support the frame on a floor; a traction device coupled to the frame and configured to provide mobility to the frame; a motor operably coupled to the traction device; a drive controller operably coupled to the motor, to control the motor; a motor disconnect arrangement, coupled to the drive controller and the motor, to disconnect the drive controller from the motor to enable manually powered movement of the patient support; and a user input device coupled to the drive controller, the user input device being operable to provide a signal to the drive controller to control the motor in response to the user input device, wherein the user input device comprises a handle and a force sensing element, the handle being operably coupled to the force sensing element, and the force sensing element providing the signal to the drive controller, wherein the force sensing element includes an elastic force sensing element and the elastic force sensing element includes a load cell.
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