Tankless hot water heater

Details Tankless hot water heater Tankless hot water heater

2005-09-13

2005-09-13

Nguyen, Hoang (Department: 3748)

Power plants

Motive fluid energized by externally applied heat

Process of power production or system operation

C126S026000, C126S247000

Reexamination Certificate

active

06941756

ABSTRACT:
An inline heating device for fluid has rotary members frictionally engaging a fixed heat exchanger chamber defining a central fluid transfer conduit. The rotary members are rotated by a drive shaft having a multiple vein turbine assembly adjacent the heat exchanger chamber fluid transfer conduit being driven by the fluid flow therethrough. The rotary members have enhanced friction engagement surface portions which are spring urged against a portion of the heat exchanger chamber generating heat therein for thermal transfer to the fluid flow therewithin.

REFERENCES:
patent: 4271790 (1981-06-01), Ahmed et al.
patent: 4312322 (1982-01-01), Frelhage
patent: 4387701 (1983-06-01), Gibbons
patent: 4554906 (1985-11-01), Newman, Sr. et al.
patent: 4596209 (1986-06-01), Haslach, Jr.
patent: 5392737 (1995-02-01), Newman, Sr. et al.
patent: 6684822 (2004-02-01), Lieggi

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