Accession Number : ADD001868

Title :   Vermiculating Polytoroidal Thruster.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Fashbaugh,Richard H ; Gaberson,Howard A ; Stone,Philip L ; Williams,Donald E ; Stephenson,John M

Report Date : 06 May 1975

Pagination or Media Count : 7

Abstract : The patent relates to a vermiculating polytoroidal thruster which provides large thrust and braking forces for various devices, comprised of a plurality of inflatable bladders mounted on a spool and held in place by end plates. When the bladders are inflated, they squeeze against the inner surface of a tube or tunnel and generate large friction forces for braking or thrusting. Thrust is provided by vermiculating motion which is generated by inflating one bladder while simultaneously deflating another. A net forward motion is achieved by providing controls for the axial expansion of the bladders. Selective inflation and deflation of certain bladders is controlled by a cycle timer and solenoid valves.

Descriptors :   *Tunneling, *Thrusters, *Braking, *Patents, Bladders, Inflatable structures, Motion, Solenoid valves

Subject Categories : Civil Engineering
      Construction Equipment, Materials & Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE