Stair climbing conveyance

• US 3,288,234 A
• Filed: 08/17/1964
• Issued: 11/29/1966
• Est. Priority Date: 08/17/1964
• Status: Expired due to Term

• Current Assignee: Jack M. Feliz
• Original Assignee: Jack M. Feliz
• Inventors: Feliz, Jack M.
• Application Number:
  US04/390,044
• Time in Patent Office: 834 Days
• US Class Current: 180/6.5
• CPC Class Codes: A61G 5/023 acting directly on hubs or axis
• CPC Class Codes: A61G 5/026 Cranks or hand wheels
• CPC Class Codes: A61G 5/061 for climbing stairs
• CPC Class Codes: A61G 5/066 with endless belts
• CPC Class Codes: A61G 5/08 foldable
• CPC Class Codes: A61G 5/085 folding up and down, e.g. reducing or expanding the overall height of the wheelchair
• CPC Class Codes: A61G 5/0891 having rigid supports, e.g. seat or back supports which retain their shape after folding of the wheelchair
• CPC Class Codes: B60L 2200/34 Wheel chairs
• CPC Class Codes: B60L 2220/46 Wheel motors, i.e. motor connected to only one wheel
• CPC Class Codes: B60L 2260/34 Stabilising upright position of vehicles, e.g. of single axle vehicles
• CPC Class Codes: B60L 50/66 Arrangements of batteries
• CPC Class Codes: B62D 55/075 Tracked vehicles for ascending or descending stairs, steep slopes or vertical surfacesmagnetic or pneumatic ground-engaging parts B62D55/265; chairs or multi-track cycles specially adapted for invalids A61G5/00
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y10S 280/10 Stair climbing chairs

Claims

1. IN A LOAD CARRYING CONVEYANCE, A PLATFORM TO RECEIVE THE LOAD;

MAIN ENDLESS BELT TRACTOR MEANS SUPPORTING THE PLATFORM FOR MOBILITY;

LEVER MEANS CARRYING AUXILIARY ENDLESS BELT TRACTOR MEANS DISPOSED ON PIVOTS FORWARDLY AND REARWARDLY ON THE PLATFORM AND OUTWARDLY OFF-SET FROM SAID MAIN TRACTOR MEANS AND PLATFORM TO BE OPERATIVELY CLEAR OF SAID MAIN TRACTOR MEANS AND PLATFORM TO PERMIT ROTATION OF SAID AUXILIARY TRACTOR MEANS WITHOUT INTERFERENCE CONTACT WITH SAID MAIN TRACTOR MEANS OR PLATFORM;

POWER MECHANISM MANUALLY CONTROLLABLE BY AN OPERATOR FOR DRIVING THE SEVERAL TRACTOR MEANS;

ROTATIONAL MEANS FOR ROTATING SAID SEVERAL LEVER MEANS CONCENTRICALLY POSITIONED WITH SAID PIVOTS AND MEANS FOR DRIVING SAID ROTATIONAL MEANS.