Coupling system for twin-fin tubes used in radiation heating app

Details Coupling system for twin-fin tubes used in radiation heating app Coupling system for twin-fin tubes used in radiation heating app

1997-09-29

2000-07-18

Swiatek, Robert P.

Plant husbandry

Miscellaneous

Modified earth's surface, e.g., sod, turf, reinforced

47 485, A01G 1306

Patent

active

060889519

ABSTRACT:
A coupling system for twin-fin tubes used in radiation heating for agricultural applications wherein a heated fluid, such as water, is passed through the tubes for the purpose of heating surrounding plants. The twin-fin tubes have a tubular portion from which twin-fins protrude radially. The twin-fins also extend substantially the entire length of the tubular portion. Adjacent each end of the twin-fin tubes, the tubular portion has a neck segment with a pair of radially outwardly extending fingers. The tubular coupler has an inside diameter slightly larger than the diameter of the neck portion which is removably inserted therein. Adjacent each end of the tubular coupler are a pair of axially spaced annular grooves on the inner surface thereof. The inner most of these two annular grooves has an O-ring seated therein. Axially extending slots extend in from the respective left and right ends of the coupler to the outer most inner annular grooves and function to receive the radially extending fingers on the respective neck segments of the respective twin-fin tubes. A slight radial rotation motion to the coupler locks the respective members of the assembly together.

REFERENCES:
patent: 1604189 (1926-10-01), Nelson
patent: 3579908 (1971-05-01), Morgan
patent: 4870781 (1989-10-01), Jones
patent: 5263278 (1993-11-01), Valenti, Jr.

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