(19)
(11)
EP 0 051 665 A1
(12)
(43)
Date of publication:
19.05.1982
Bulletin 1982/20
(21)
Application number:
81901446.0
(22)
Date of filing:
05.05.1981
(51)
International Patent Classification (IPC):
F04B
47/
04
( . )
(86)
International application number:
PCT/US1981/000591
(87)
International publication number:
WO 1981/003206
(
12.11.1981
Gazette 1981/27)
(84)
Designated Contracting States:
CH DE FR GB LI NL SE
(30)
Priority:
09.05.1980
US 19800148380
03.09.1980
US 19800183958
(71)
Applicant:
GILBERTSON, Thomas A.
San Francisco, CA 94105 (US)
(72)
Inventor:
GILBERTSON, Thomas A.
San Francisco, CA 94105 (US)
(54)
OIL WELL PUMP DRIVING UNIT