Removable inspection hole plug

Details Removable inspection hole plug Removable inspection hole plug

1994-07-18

1995-07-11

Look, Edward K.

Rotary kinetic fluid motors or pumps

With inspection, signaling, indicating or measuring means

415136, 415138, 415201, 60 3933, F01D 2500

Patent

active

054315344

ABSTRACT:
A removable inspection hole plug for sealing a plurality of inspection holes formed in a double-walled enclosure is disclosed in which individual sealing units are disposed in each of the inspection holes, with the individual sealing units linked together by a link rod pivotally attached to each of the sealing units. A seal is provided on each of the sealing units which slideably engages a wall defining the inspection hole and the link rod may be attached to the sealing units by a ball and socket swivel joint. One of the sealing units is attached to a housing which is, in turn, removably attached to the enclosure such that the sealing unit may undergo limited axial movement relative to the housing. This accommodates differential thermal expansion between the walls of the enclosures and also facilitates removal of the inspection hole plug by merely unfastening the housing from the enclosure and removing the housing along with the sealing units.

REFERENCES:
patent: 3362160 (1968-01-01), Bourgeois
patent: 4406580 (1983-09-01), Baran, Jr.
patent: 4815276 (1989-03-01), Hansel et al.
patent: 5115636 (1992-05-01), Zeiser
patent: 5185996 (1993-02-01), Smith et al.

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