Self-powered pump for heated liquid, fluid heating and...

Details Self-powered pump for heated liquid, fluid heating and... Self-powered pump for heated liquid, fluid heating and...

2011-04-26

2011-04-26

McAllister, Steven B (Department: 3749)

Stoves and furnaces

Solar heat collector

With means to convey fluent medium through collector

C126S569000, C126S634000, C165S120000, C165S164000, C417S052000, C417S152000, C417S207000, C137S087020, C137S124000, C137S134000

Reexamination Certificate

active

07931019

ABSTRACT:
A self-powered pump for heated liquid is provided. The pump includes an airtight container for containing the heated liquid. A heated liquid inlet pipe extends upwardly into the container such that its end is within the container. A heated liquid outlet is lower than the end of the inlet pipe. A breathing pipe extends upwardly into the container such that its end is within the container and is higher than both of the outlet and the end of the inlet pipe but lower than an interior side of the container top. An opposite end of the breathing pipe is outside the container, lower than the container base, and is received by an open container such that the opposite end can become submerged in heated liquid accumulated within the open container during pump operation. A fluid or liquid heating system incorporating the self-powered pump may operate without external power for the pump.

REFERENCES:
patent: 3937599 (1976-02-01), Thureau et al.
patent: 4237862 (1980-12-01), Embree
patent: 4357932 (1982-11-01), Stacy
patent: 4458669 (1984-07-01), Lee
patent: 4531510 (1985-07-01), Barthez et al.
patent: 4542762 (1985-09-01), Littlehale
patent: 4691692 (1987-09-01), Conner et al.
patent: 7574870 (2009-08-01), Filippone
Chris Fitz-Hardy, Canadian Intellectual Property Office Action, Dec. 18, 2009, 3 pages, Canadian Intellectual Property Office, Canada.

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