Pumps – Diverse pumps – Including rotary nonexpansible chamber type
Patent
1988-05-06
1990-01-09
Croyle, Carlton R.
Pumps
Diverse pumps
Including rotary nonexpansible chamber type
417371, 4174238, 41742314, F04B 2304
Patent
active
048924644
ABSTRACT:
A pump apparatus for supplying water and air via suitable respective feeding apparatus to a swimming pool or similar facility, with an electric motor for driving the pump apparatus comprising channel sections surrounding, at least partially, the electric motor by forming an annular gap, the air being feedable through the channel sections to a collecting chamber which is connected to a supply member for delivering air to said water feeding apparatus and/or to said swimming pool.
REFERENCES:
patent: 1387296 (1921-08-01), Nelson
patent: 1569845 (1926-01-01), Murphy
patent: 1601531 (1926-09-01), Jeannin
patent: 3521978 (1970-07-01), Enemark
patent: 4052757 (1977-10-01), Dotson
patent: 4518325 (1985-05-01), Kingston
A. Earley John F.
A. Earley III John F.
Croyle Carlton R.
Szczecina Jr. Eugene L.
Walker P. Michael
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