Externally mountable spiral adaptor

Details Externally mountable spiral adaptor Externally mountable spiral adaptor

2008-01-01

2008-01-01

Patel, Vishal (Department: 3673)

Seal for a joint or juncture

Seal between relatively movable parts

Diverse and distinct dynamic seals

C277S411000, C277S412000, C277S430000, C277S585000, C277S512000

Reexamination Certificate

active

07314218

ABSTRACT:
An adaptor that can be used with rotary fluid equipment will protect mechanical seals and/or packing material adjacent a seal cavity (18) of the equipment. The adaptor includes an annular body (30) with a central bore (32) adapted to receive a shaft (12) of the equipment. When used with mechanical seals the adaptor is receivable in the cavity at the entrance thereto and it has a portion which surface which effects contact with a complementary surface of the seal. When used with packing the adaptor fits within the cavity and defines an outboard extension in which the packing can be received. The bore defines two portions, one of which is close to the shaft (52) and another portion (54) which flares outwardly from the one portion towards the outboard end of the adaptor. Each bore portion has a spiral groove (56, 58) therein, which groove serves to redirect contaminant material contained in fluids surrounding the shaft away from the seal cavity.

REFERENCES:
patent: 4071254 (1978-01-01), Raimondi et al.
patent: 4301893 (1981-11-01), St. Jean et al.
patent: 4302020 (1981-11-01), Morales
patent: WO 03/010451 (2003-02-01), None

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