초록 ▼

A pivotable fold-down step system mounted to a vehicle, such as a fire truck or rescue truck, and synchronized to extend and retract by vehicle door motion. The step system is designed to easily achieve ingress and egress requirements stated within the National Fire Protection Agency (NFPA) guidelin

A pivotable fold-down step system mounted to a vehicle, such as a fire truck or rescue truck, and synchronized to extend and retract by vehicle door motion. The step system is designed to easily achieve ingress and egress requirements stated within the National Fire Protection Agency (NFPA) guidelines. The step remains sealed and contoured to the vehicle profile when in the upright stowed position when the vehicle door is closed. The fold down step is operated by means of a pressurized fluid system which is integral to the vehicle. As the vehicle door opens the step is extended downward, under pressurized control, to allow for rapid and safe egress from the vehicle. As the vehicle door closes, the step is again operated by the pressurized integral fluid system and the step rises and folds into a stowed position within the vehicle body prior to transport of the vehicle.

대표청구항 ▼

A folding step system for a vehicle having a chassis and at least one door, the system comprising: a step box mechanism attached to the vehicle chassis beneath the door, the step box mechanism having a generally open front and a pair of side walls; a bearing surface formed in each side wall; a step

A folding step system for a vehicle having a chassis and at least one door, the system comprising: a step box mechanism attached to the vehicle chassis beneath the door, the step box mechanism having a generally open front and a pair of side walls; a bearing surface formed in each side wall; a step structure having at least one step and an axle, the step structure positioned within the step box and the axle rotatably supported by the bearing surfaces; a fluid filled reciprocating cylinder having a body and a ram structure, the fluid filled reciprocating cylinder being located within the step box mechanism and the body being connected to the step box and the ram structure being connected to the step structure; a controlled fluid source for providing fluid to the reciprocating cylinder, the controlled fluid source connected to the reciprocating cylinder and further including a control valve having a control valve pin, the control valve pin being actuated by the opening and closing of the vehicle door.