Valves and valve actuation – Fluid actuated or retarded – Dashpot or fluid controlled retarder or timer
Reexamination Certificate
2005-11-01
2005-11-01
Bastianelli, John (Department: 3751)
Valves and valve actuation
Fluid actuated or retarded
Dashpot or fluid controlled retarder or timer
C251S054000, C251S129070
Reexamination Certificate
active
06959907
ABSTRACT:
A normally closed solenoid-operated valve is composed of a stationary element provided at one end of a stationary sleeve, a movable element slidably inserted in the sleeve to face the stationary element and provided at an external surface thereof with a communication groove which axially extends between the opposite ends thereof for permitting the flow of the operating fluid, and an electromagnetic coil for exciting the stationary element and the movable element. A damper chamber is defined by an annular shim provided between the lower end surface of the stationary element and the top surface of the movable element. When the damper chamber is closed by the lower end surface of the stationary element and the top surface of the movable element, a dent groove makes the damper chamber communicate with the communication groove.
REFERENCES:
patent: 3523676 (1970-08-01), Barker
patent: 3666231 (1972-05-01), Parodi et al.
patent: 4634096 (1987-01-01), Hara
patent: 4852853 (1989-08-01), Toshio et al.
patent: 5601275 (1997-02-01), Hironaka
patent: 5722633 (1998-03-01), Goossens et al.
patent: 5918635 (1999-07-01), Wang et al.
patent: 6021997 (2000-02-01), Hell
Advics Co., Ltd.
Bastianelli John
Buchanan & Ingersoll PC
LandOfFree
Normally closed solenoid-operated valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Normally closed solenoid-operated valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Normally closed solenoid-operated valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3468231