Adjustable standpipe apparatus for evaporative coolers

Details Adjustable standpipe apparatus for evaporative coolers Adjustable standpipe apparatus for evaporative coolers

1981-04-29

1984-10-30

Arola, Dave W.

Pipe joints or couplings

With assembly means or feature

Particular tool-engaging means or with tool

285161, 285169, 285332, 2853323, 285391, 285423, F16L 3500

Patent

active

044796676

ABSTRACT:
Two pipes for low pressure water systems include a pair of tapering surfaces secured together by a threaded engagement in which the thread of one member extends helically for less than three hundred sixty degrees.

REFERENCES:
patent: 1645032 (1927-10-01), Wilson
patent: 2454465 (1948-11-01), Leo et al.
patent: 3214198 (1965-10-01), Peuchmaur
patent: 3281869 (1966-11-01), Schweigaard
patent: 3404540 (1968-10-01), Bryans et al.
patent: 3540757 (1970-11-01), Neber
patent: 3749424 (1973-07-01), Greene
patent: 3876234 (1975-04-01), Harms
patent: 4154466 (1979-05-01), Simmons
patent: 4212335 (1980-07-01), Bova

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