Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1992-04-30
1994-04-12
Cuchlinski, Jr., William A.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277230, 277DIG6, F16J 1512
Patent
active
053019601
ABSTRACT:
A packing material for formation of a seal for a rotary or reciprocating shaft is disclosed wherein a core element is enveloped by a sheet of expanded graphite material. The core element is preferably formed of a wire mesh and solid graphite. The enveloping process is accomplished in such a manner as to wrap the core element with a self-lubricating surface material. The packing material of the present invention provides the advantages of graphite packings and metallic core packings.
REFERENCES:
patent: 1020115 (1912-03-01), Price
patent: 1325955 (1919-12-01), Payne
patent: 1715072 (1929-05-01), Medernach
patent: 2072543 (1937-03-01), Crane
patent: 2562262 (1951-07-01), Witt, Sr.
patent: 2666005 (1954-01-01), Norehad
patent: 3033722 (1962-05-01), Goodloe
patent: 3894742 (1975-07-01), Trelease
patent: 4116451 (1978-09-01), Nixon et al.
patent: 4350346 (1982-09-01), Fowler
patent: 4455334 (1984-06-01), Ogino et al.
patent: 4559248 (1985-12-01), Sumiyoshi et al.
patent: 4559249 (1985-12-01), Arigaya et al.
patent: 4607851 (1986-08-01), Usher
patent: 4667969 (1987-05-01), Suggs, III
patent: 4705722 (1987-11-01), Ueda et al.
patent: 4709758 (1987-12-01), Preston, Jr.
patent: 4802698 (1989-02-01), Fujisawa et al.
Machine Design, "Seals" (3rd ed.); edited by Benjamin L. Hummel, pp. 39-44, publ. Mar. 9, 1967.
"U.S. Packings" catalog; p. 51, date=Nov. 15, 1938.
Electric Power Research Institute, "Assessment of Industry Valve Problems", EPRI NP-241, Nov. 1976.
Electric Power Research Institute, "Valve Stem Packing Improvements", EPRI NP-4255, Feb. 1986.
Rockwell International, "Tests of Asbestos-Free Stem Packings for Valves for Valves for Elevated Temperature Service", V-Rep 86-2, by E. A. Bake and R. J. Gradle, Aug. 1986.
Power, "Upgrade Performance and Maintainability of Valves", May 1987, p. 67.
Electric Power Research Institute, "Valve Stem Packing Improvements", EPRI NP-5697, May 1988.
GRAFOIL.RTM. Technical Bulletin No. G-203, Union Carbide Corporation, 1987.
Cohen Jim B.
Meyer Reid M.
Suggs Steven M.
Suggs, Jr. James W.
Cuchlinski Jr. William A.
Cummings Scott W.
Suggs Group, Inc.
LandOfFree
Improved spirally-formed seal for shafts and valve stems does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Improved spirally-formed seal for shafts and valve stems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Improved spirally-formed seal for shafts and valve stems will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2094107