Title: Scaffold

Abstract: A scaffold for carrying out activities inside a tank having a substantially cylindrical side wall and a roof with centrally provided therein a manhole, comprising a central mast and, movable therearound, a section for carrying operating platforms rotatably connected to said mast, all scaffold members being coupled for mutual pivotal movement and having such a cross-section that they can be lowered into the tank via the manhole.

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Inventors: Holterbosch, Johan Leo Maria (Utrecht, NL)

Application Number: 607796
Filing Date: 1975-08-26
Publication_date: 1976-12-21
Assignee: Holterbosch Engineering, B.V. (Utrecht, NL)
Primary Class(es): 182/128 182/82, 182/130, 182/152
Other Classes:
US Patent Ref:

1432116	Oct, 1922	Martin	182/39.
3306396	Feb, 1967	Goss	182/128.
3870122	Mar, 1975	Faucheux	182/128.

Other Refs:
Primary Examiner: Machado, Reinaldo P.
Assistant Examiner:
Attorney: Brady, O'Boyle & Gates