Sealing mechanism for sealing an aperture on a closed vessel

Details Sealing mechanism for sealing an aperture on a closed vessel Sealing mechanism for sealing an aperture on a closed vessel

1989-10-04

1992-11-24

Gall, Lloyd A.

Rotary expansible chamber devices

Miscellaneous

401136, 401369, 401542, 401990, F01C 2100, F16B 4300

Patent

active

051658828

ABSTRACT:
A sealing mechanism for sealing an aperture formed through a housing of a closed vessel is disclosed. The sealing mechanism includes a bolt having a threaded shaft portion and a flange portion. A seating portion is formed on the outer opening of the aperture and a rotation preventing portion is formed on the surface of the seating portion. A washer is disposed on the seating portion. The washer is made of a metal softer than the material of the housing. When the bolt is rotated the washer contacts the flange portion of the bolt. The axial force of the bolt causes the washer to engage the rotation preventing portion. The rotation preventing portion deforms the washer and prevents the washer from rotating. Therefore, the inner end surface of the washer does not rub against the surface of the seating portion. As a result, adequate sealing is maintained.

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