Valves and valve actuation – Fluid actuated or retarded – Dashpot or fluid controlled retarder or timer
Reexamination Certificate
2011-04-05
2011-04-05
Fristoe, Jr., John K (Department: 3753)
Valves and valve actuation
Fluid actuated or retarded
Dashpot or fluid controlled retarder or timer
C251S012000, C251S129150
Reexamination Certificate
active
07918434
ABSTRACT:
The invention provides a solenoid actuated valve with a plunger which moves in a sleeve under influence of a magnetic field from the solenoid and further comprising a damping device for reducing noise and wear caused by the plunger when it bounces against a top part located in the sleeve. The damping device comprises a first part which forms the limit of the travel of the plunger and another part which is allowed to move relative to the first part in a dampened movement. To enable application in a vacuum system, the damping device comprises a conduit which allows evacuation of a chamber confined between one end of the sleeve and the damping device. The invention further provides a damper for a solenoid actuated valve.
REFERENCES:
patent: 276805 (1883-05-01), Guild
patent: 2522991 (1950-09-01), Caserta
patent: 2524293 (1950-10-01), Lindstrom
patent: 2630139 (1953-03-01), Nagel
patent: 2735047 (1956-02-01), Garner et al.
patent: 2968464 (1961-01-01), Olson
patent: 3134932 (1964-05-01), Ray
patent: 3326511 (1967-06-01), Hallgreen
patent: 3345079 (1967-10-01), Wickham
patent: 3796611 (1974-03-01), O'Brien
patent: 3797611 (1974-03-01), Hurt
patent: 4335690 (1982-06-01), Hosokawa et al.
patent: 4437644 (1984-03-01), Wilmers
patent: 4501409 (1985-02-01), Hill et al.
patent: 4515343 (1985-05-01), Pischinger et al.
patent: 4588175 (1986-05-01), Martin et al.
patent: 5186151 (1993-02-01), Schwerdt et al.
patent: 5300908 (1994-04-01), Stone et al.
patent: 5575460 (1996-11-01), Knopfel
patent: 5722633 (1998-03-01), Goossens et al.
patent: 5881993 (1999-03-01), Wilson et al.
patent: 5909791 (1999-06-01), DiStefano
patent: 6205964 (2001-03-01), Maisch et al.
patent: 6220586 (2001-04-01), Pavlin et al.
Danfoss A/S
Fristoe, Jr. John K
LandOfFree
Solenoid actuated valve with a damping device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Solenoid actuated valve with a damping device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solenoid actuated valve with a damping device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2644542