Land vehicles – Step or abutment ascending type vehicle – With endless track
Reexamination Certificate
2005-09-13
2005-09-13
Hurley, Kevin (Department: 3611)
Land vehicles
Step or abutment ascending type vehicle
With endless track
C005S620000, C005S086100
Reexamination Certificate
active
06942226
ABSTRACT:
An ambulance cot is provided having a wheeled carriage, a frame for mounting the wheels, a horizontally oriented patient litter supported from the wheeled carriage and variable, pneumatically powered height scissors frame. The pneumatic actuator is designed to give a patient air-ride transportation and an adjustable height litter for lifting a patient from the ground. The patient litter has a pivoting hinge for transporting a patient down stairs. This pivot will allow the stretcher to pivot to a horizontal angle while going down stairs, for patient support and ease of transportation for the operator below. One embodiment has tracks attached over the wheels to provide a more stable and smooth ride as the cot is moved down stairs. Another embodiment comprises a translational trolley configuration. A hand brake is mounted on the patient litter for braking the tank-like motion of the tracks.
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patent: WO 94/05538 (1994-03-01), None
Descent Control Systems, Inc.
Hurley Kevin
Kirton & McConkie
Krieger Michael F.
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