Valves and valve actuation – Mechanical movement actuator – Particularly packed or sealed
Patent
1993-03-04
1994-03-01
Rivell, John
Valves and valve actuation
Mechanical movement actuator
Particularly packed or sealed
277106, F16K 4102, B65D 5300
Patent
active
052900100
ABSTRACT:
A multiple thrust range, live loaded packing system for stems and shafts extending into a packing chamber containing a packing ring, and a packing gland engaging the ring and having an outer end portion projecting outwardly of the chamber includes a first thrust member engaging an outer end portion of the gland and a second thrust member spaced from and facing the first thrust member. A spring is mounted between the thrust members for normally biasing the thrust members apart and a spacer is mounted between the thrust members around the spring for establishing a minimum spacing distance between the thrust members. One or more tension members extend between the thrust members to secure the thrust members against the spacer for exerting a selected live load on the packing gland via the spacer, the spring and the first thrust member. At least one of the thrust members has a plurality of opposite stop surfaces selectively engageable with the spacer to provide different thrust range values of live loading depending on which stop surface is engaged with the spacer.
REFERENCES:
patent: 534575 (1895-02-01), Platts et al.
patent: 548089 (1895-10-01), Platts et al.
patent: 601614 (1898-03-01), Dudley
patent: 2441705 (1948-05-01), Jacobsen
patent: 3659862 (1992-05-01), Sebestian
patent: 3713660 (1993-01-01), Luthe
patent: 3787060 (1974-01-01), Astill et al.
patent: 3968970 (1976-07-01), Vogeli
patent: 4061157 (1977-12-01), Hanssen
patent: 4582329 (1986-04-01), Stalph
patent: 4722507 (1988-02-01), Lindackers et al.
patent: 4745944 (1988-05-01), Francart, Jr.
patent: 4773442 (1988-09-01), Lephilibert
patent: 5024453 (1991-06-01), Suggs
patent: 5056757 (1991-10-01), Wood
patent: 5129625 (1992-07-01), Wood et al.
patent: 5192049 (1993-03-01), Ridge
Cashco, Inc.
Rivell John
LandOfFree
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