Fluid handling – Destructible or deformable element controlled – Heat destructible or fusible
Patent
1991-02-11
1991-11-26
Rivell, John
Fluid handling
Destructible or deformable element controlled
Heat destructible or fusible
137 75, 251 90, 251113, F16K 1740
Patent
active
050675109
ABSTRACT:
An actuator shaft heat-sensitive locking apparatus is disclosed comprising a cylindrical housing having an axial bore. A shaft link is provided in the bore and is adjustable to contact gate valve actuator shafts of varying lengths. Once adjusted, the shaft link is movable axially between a first position and a second position, allowing the actuator shaft to close the gate valve. There is also provided a means movably extending through the housing for partially blocking the bore and a fusible element slidably mounted in the bore between the shaft link and the means for partially blocking the bore. The fusible element has both a solid state and a heat responsive state. In its solid state, the fusible elemnt prevents movement of the shaft link by enaging the bore blocking means; in its heat responsive state, the fusible element allows movement of the shaft link between the first position and second position. A mechanical release means is also provided surrounding the housing for axial movement in operative relation with the bore blocking means for remote operation. The mechanical release means allows the shaft link to move with the fusible element between the first position and the second position.
REFERENCES:
patent: 1004794 (1911-10-01), Keeton
patent: 1497946 (1924-06-01), Schmidt
patent: 1814157 (1931-07-01), Heimbold
patent: 1914250 (1933-06-01), Gillen
patent: 1991052 (1935-02-01), Derby
patent: 2997052 (1961-08-01), Mangini
patent: 3809114 (1974-05-01), Mueller et al.
patent: 3838705 (1974-10-01), Diehl et al.
patent: 3842853 (1974-10-01), Kelly et al.
patent: 3842854 (1974-10-01), Wicke
patent: 3896835 (1975-07-01), Wicke
patent: 3958592 (1976-05-01), Wells et al.
patent: 4240455 (1980-12-01), McGee
patent: 4245662 (1981-01-01), McGee
patent: 4421134 (1983-12-01), Bruton et al.
patent: 4432383 (1984-02-01), Boyette
patent: 4533114 (1985-08-01), Cory et al.
patent: 4619434 (1986-10-01), Snyder et al.
patent: 4635670 (1987-01-01), Kilmoyer
patent: 4714233 (1987-11-01), Oates
patent: 4827963 (1989-05-01), Baker et al.
Breaux Craig B.
Cawyer Denny
Duplantis Dwight
Hiller Don
Axelson, Inc.
Rivell John
LandOfFree
Adjustable, fusible, manually operable valve lock-open assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adjustable, fusible, manually operable valve lock-open assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjustable, fusible, manually operable valve lock-open assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2382339