Tethered hovering platform

• US 3,149,803 A
• Filed: 07/19/1961
• Issued: 09/22/1964
• Est. Priority Date: 07/19/1961
• Status: Expired due to Term

• Current Assignee: Oleg Stroukoff, Thracy Petrides, Wilfred P. Stapelfeld
• Original Assignee: Oleg Stroukoff, Thracy Petrides, Wilfred P. Stapelfeld
• Inventors: THRACY PETRIDES, Stapelfeld, Wilfred P., OLEG STROUKOFF
• Application Number:
  US04/125,200
• Time in Patent Office: 1,161 Days
• US Class Current: 244/17.13
• CPC Class Codes: B64C 39/022 Tethered aircraft

Claims

1. A TETHERED HOVERING PLATFORM COMPRISING A SYMMETRICAL BODY MEMBER, TWO COAXIALLY ROTATABLE DRIVEN SHAFTS EXTENDING VERTICALLY THROUGH SAID BODY MEMBER, LIFTING BLADES MOUNTED ON THE UPPER END OF EACH SAID DRIVEN SHAFT, ELECTRIC MOTOR MEANS FOR ROTATING SAID SHAFTS IN OPPOSITE DIRECTIONS, A SHROUD SURROUNDING THE LOWER PART OF SAID BODY MEMBER, ROTATABLE CONTROL BLADES EXTENDING INTO A DUCT FORMED BETWEEN SAID BODY MEMBER AND SAID SHROUD AND BEING ROTATED BY SAID ELECTRIC MOTOR MEANS, MOVABLE CONTROL VANES MOUNTED IN SAID DUCT AND IN THE DOWNWASH AREA OF SAID CONTROL BLADES FOR IMPARTING JAW AND PITCH STABILITY TO SAID PLATFORM, A TETHERING YOKE GIMBALED ONTO SAID BODY MEMBER THROUGH SUBSTANTIALLY THE CENTER OF GRAVITY OF SAID HOVERING PLATFORM, AND CABLE MEANS EXTENDING FROM SAID BODY MEMBER THROUGH SAID YOKE TO AN ELECTRIC POWER SUPPLY UNIT WHEREBY ELECTRIC POWER IS SUPPLIED TO SAID ELECTRIC MOTORS TO ROTATE SAID LIFTING BLADES AND CONTROL BLADES.

2. A TETHERED HOVERING PLATFORM ACCORDING TO CLAIM 1 HAVING IN ADDITION ALTITUDE RESPONSIVE MEANS FOR VARYING THE SPEED OF ROTATION OF SAID ELECTRIC MOTORS WHEREBY SAID HOVERING PLATFORM WILL MAINTAIN A PREDETERMINED ALTITUDE ABOVE GROUND.