Device for brushing the gasket face of a manhole for gaining acc

Details Device for brushing the gasket face of a manhole for gaining acc Device for brushing the gasket face of a manhole for gaining acc

1989-05-05

1990-06-19

Moore, Chris K.

Brushing, scrubbing, and general cleaning

Attachments

Tank cleaners

15 21E, 15354, 15359, A46B 1302

Patent

active

049340123

ABSTRACT:
The invention relates to a device for brushing the gasket face of a manhole for gaining access to the inside of a vessel. The invention comprises a main frame (100), a secondary frame (200) mounted to rotate relative to the main frame (100) about an axis (101) which is coaxial with the manhole, and a brushing mount (300) supported by the secondary frame (200) and capable of oscillating about a second axis (102) transversal to the axis (101). Motor means (105 and 205) separately rotate the secondary frame (200) and the brush (301), thereby enabling effective tangential brushing to be performed. The device also includes a continuous suction passage (500) passing through the inside of the secondary frame (200) and through the oscillating brushing mount (300), and opening out into the brushing zone. The invention is particularly applicable to brushing the gasket face of a manhole in a steam generator or pressurizer of a nuclear power station.

REFERENCES:
patent: 2668968 (1954-02-01), Dobrowolski
patent: 2915766 (1959-12-01), Peterson
patent: 3922748 (1975-12-01), Ritz
patent: 4485517 (1984-12-01), Voigt
patent: 4598436 (1986-07-01), Regnet et al.
patent: 4600444 (1986-07-01), Miner
patent: 4805253 (1989-02-01), Hanser

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