Seal ring for piston rods with partings

Details Seal ring for piston rods with partings Seal ring for piston rods with partings

1984-08-23

1987-11-17

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277157, 277165, 277192, 277216, F16J 912, F16J 1510

Patent

active

047069716

ABSTRACT:
For sealing-off a piston rod moistened with lubricating oil, for example of a 2-stroke diesel engine, several seal rings, some of which only act as wiper rings and some of which also act as seal rings for a gas-tight seal, depending on their design, are arranged next to one another in a packing casing. Each seal ring has less than three partings and consists of sectorial ring pieces made from a plastic material. On the outside, the seal ring is surrounded by a helical spring which runs around annularly and which pushes the ring sections against the piston rod by its tensile force. The ring sections are made of a plastic material, as used, for example, also in this manner for slide bearings, so that the so-called anti-seizure properties of the seal ring are significant.

REFERENCES:
patent: 1331522 (1920-02-01), Parsons et al.
patent: 1809056 (1931-06-01), Mellor
patent: 2850311 (1958-09-01), Mansfield
patent: 2877071 (1959-03-01), Arnot
patent: 3035842 (1962-05-01), Gilbert
patent: 3076659 (1963-02-01), Kremer
patent: 3563557 (1971-02-01), Doutt
patent: 4185842 (1980-01-01), Magara
patent: 4206930 (1980-06-01), Thrane et al.
patent: 4337954 (1982-07-01), Backlin et al.
patent: 4350349 (1982-09-01), McTavish
patent: 4371174 (1983-02-01), Gurtler

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