Valves and valve actuation – Electrically actuated valve – Including solenoid
Reexamination Certificate
2005-05-03
2005-05-03
Jacyna, J. Casimer (Department: 3751)
Valves and valve actuation
Electrically actuated valve
Including solenoid
C251S129150
Reexamination Certificate
active
06886802
ABSTRACT:
An electromagnetically-actuated two-way two-position valve is normally closed and comprises an axially-mobile group (5) which has an upper end (5a) that faces a fixed group (6) and which is attracted thereby. An obturator (4) is intercepted and then drawn in an opening movement by the mobile group (5) when the mobile group (5) is at a short distance from an end of its run. A return spring (9), which displaced the obturator (4) towards a closed position when the fixed group is deactivated, is entirely located behind the upper end (5a) of he mobile group (5). An air gap (8) is comprised, in a radial direction, between a coil (7) for activating the fixed group (6) and the upper end (5a) of the mobile group (5). The valve is constructionally simple and economical and has a higher fatigue resistance than known valves.
REFERENCES:
patent: 2968464 (1961-01-01), Olson
patent: 3970282 (1976-07-01), Hansen
patent: 4592533 (1986-06-01), Guglielmi et al.
patent: 5174544 (1992-12-01), Emanie
patent: 6766820 (2004-07-01), Hoss
patent: 0 565 292 (1993-10-01), None
Acerbi Sergio
Bartolacelli Marco
Claudio Reggiani
EDI System S.p.A.
Jacyna J. Casimer
Young & Thompson
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