Accession Number : ADD005793

Title :   High Pressure Spherical Piston.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Pierce,Russell W ; Teppo,Edward A ; Leet,Henry P

Report Date : 29 Dec 1978

Pagination or Media Count : 13

Abstract : A high pressure spherical piston, which can also be thought of as a spherical piston with a very small diametrical clearance, is created by moving an o-ring to a nonsymetrical position. Shifting the o-ring to one side of the piston permits the spherical piston to have a diameter less than the diameter of the cylinder walls without the normal loss of pressure. Lubrication of the piston prevents o-ring extrusion. The placement of the o-ring limits the piston to a single acting mode. (Author)

Descriptors :   *Patent applications, *Pistons, Clearances, High pressure, O rings, Seals(Stoppers), Lubrication, Asymmetry

Subject Categories : Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE