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1. (AU1990067540) Lantern ring coil and method of manufacture

Office : Australia
Application Number: 67540/90 Application Date: 29.11.1990
Publication Number: 1990067540 Publication Date: 03.09.1992
Publication Kind : A
Prior PCT appl.: Application Number:CA1990000426 ; Publication Number: Click to see the data
IPC:
F16J 15/18
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
J
PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS
15
Sealings
16
between relatively-moving surfaces
18
with stuffing-boxes for elastic or plastic packings
Applicants: Champlin, George B.
Dunford, Joseph R.
Sylvia, Milton
Inventors: Champlin, George B.
Dunford, Joseph R.
Sylvia, Milton
Priority Data: 443361 30.11.1989 US
Title: (EN) Lantern ring coil and method of manufacture
Abstract:
(EN) Methods by which a length of plastic material (40) may be formed into a continuous helix (40) so that lantern rings may be cut therefrom for utilization with conventional packing adjacent a shaft in rotating or reciprocating equipment. The material exhibits a generally H-shaped cross-section defined by continuous side walls (42, 44) extending between radially inner (46) and outer edges (48). Radially inner (50) and outer (52) surfaces are spaced inwardly from the inner (46) and outer (48) edges respectively. A plurality of generally extending holes (54) pass from the outer surface (52) to the inner surface (50) and are spaced apart along the length of the material. These holes (54) are utilized for the passage of cooling and lubricating fluid to the rotating shaft. Also, a plurality of generally axially extending holes (56) pass from one side wall (42) to the other (44) and are spaced apart along the length of the material. These holes (56) are utilized for extraction of a lantern ring from a stuffing box should the necessity arise, and for ensuring uniform curvature of the resulting lantern ring. Several methods are also disclosed for producing the aforementioned product. The methods include extrusion and drilling steps as well as the formation, usually by appropriate dies, of the desired helical coil.
Also published as:
WO/1991/008408