Flapper closure mechanism

Details Flapper closure mechanism Flapper closure mechanism

2005-04-12

2005-04-12

Bagnell, David (Department: 3672)

Wells

Valves, closures or changeable restrictors

Longitudinally movable operator

Reexamination Certificate

active

06877564

ABSTRACT:
A closure mechanism for a flapper features a pinion on the ear extending from the flapper that is used to mount it for pivotal movement. A spring-loaded rack meshes with the pinion or pinions on the flapper so that when the flow tube swings the flapper open, rotation of the pinion teeth advances the teeth on the rack against the force of a spring. When the flow tube is retracted, the spring pushes the teeth on the rack in the opposite direction causing a rotational movement of the flapper toward closure in contact with a conforming seat.

REFERENCES:
patent: 2798561 (1957-07-01), True
patent: 3482603 (1969-12-01), Outcalt
patent: 3817278 (1974-06-01), Elliott
patent: 3830306 (1974-08-01), Brown
patent: 3958633 (1976-05-01), Britch et al.
patent: 3980135 (1976-09-01), Garrett
patent: 4019532 (1977-04-01), Schittek
patent: 4168772 (1979-09-01), Eberle
patent: 4407325 (1983-10-01), Chernaik
patent: 4422618 (1983-12-01), Lawson
patent: 4503913 (1985-03-01), Carmody
patent: 4531587 (1985-07-01), Fineberg
patent: 4585026 (1986-04-01), Norton
patent: 4669500 (1987-06-01), Strelow
patent: 4782895 (1988-11-01), Jacob et al.
patent: 5137090 (1992-08-01), Hare et al.
patent: 5145005 (1992-09-01), Dollison
patent: 5156374 (1992-10-01), Fort et al.
patent: 5159981 (1992-11-01), Le
patent: 5201371 (1993-04-01), Allen
patent: 5310005 (1994-05-01), Dollison
patent: 5411056 (1995-05-01), Solaroli
patent: 5564502 (1996-10-01), Crow et al.
patent: 5794655 (1998-08-01), Funderburk et al.
patent: 6003605 (1999-12-01), Dickson et al.
patent: 6199381 (2001-03-01), Unger et al.
patent: 6227299 (2001-05-01), Dennistoun
patent: 6253843 (2001-07-01), Rawson et al.
patent: 6269874 (2001-08-01), Rawson et al.
patent: 6328062 (2001-12-01), Williams et al.
patent: 20030121665 (2003-07-01), Trott et al.
patent: 20030178199 (2003-09-01), Deaton
patent: 1308954 (1973-03-01), None
patent: 1563487 (1980-03-01), None
patent: 2198170 (1988-06-01), None
patent: 2236549 (1991-04-01), None
patent: WO 8605853 (1986-10-01), None

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