Title: Storage tank

Abstract: A storage tank having a floating roof and a roof drainage system comprising a flexible conduit extending between the roof and a drain pipe adjacent the base of the tank, the lower end of the conduit being sealed relative to the drain pipe and there being a connection between the upper end of the conduit and the upper surface of the roof so that rainwater accumulating on the roof can pass down the conduit to the drain pipe, and the roof, adjacent the top of the conduit being apertured and the conduit being capable of being withdrawn therefrom and replaced without the need to empty the tank.

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Inventors: Sherlock, William Raymond

Application Number: 635047
Filing Date: 1975-11-25
Publication_date: 1977-07-12
Assignee:
Primary Class(es): 220/219
Other Classes:
US Patent Ref:

2315023	Mar, 1943	Stevenson	220/219.
2390141	Dec, 1945	Wiggins	220/219.
2482468	Sep, 1949	Cranmer	220/219.
2497645	Feb, 1950	Wiggins	220/219.
2601316	Jun, 1952	Moyer	220/219.
2664220	Dec, 1953	Cord et al.	220/219.
2789722	Apr, 1957	Oberst	220/219.
2844169	Jul, 1958	Skinner	220/219.
2846109	Aug, 1958	Larsen	220/219.
2886204	May, 1959	Moyer et al.	220/219.
3474931	Oct, 1969	Daniels et al.	229/219.

Other Refs:
Primary Examiner: Marcus, Stephen
Assistant Examiner:
Attorney: Ross, Ross & Flavin