Packing material
AssigneeThe Marlo Company Incorporated
InventorsEdward M. Case, Chester S. Hopper
Life of this patent
Estimating the term…
Abstract
A packing material comprises glass or other inorganic fibers in combination with organic fibers such as sintered polytetrafluoroethylene (TFE) or other selected fibers with or without an impregnant, a preferred impregnant being a lubricant with a binder. Ceramic fiber or quartz fiber can be substituted for glass fiber. Specific metal disulfides or talc can be substituted for the dispersed graphite and dispersed polytetrafluoroethylene (TFE) can be used as a binder for the lubricant. Aramid, polyethylene, polypropylene, graphite, carbon, vegetable, nylon or rayon fibers or filaments can be substituted for the sintered TFE fiber in combination with inorganic fiber.
Claims33
Compression packing, comprising at least two braided strands of a first fiber being an inorganic fiber and at least one of a second fiber being an organic, carbon or graphite fiber in combination, said braided strands impregnated with an impregnate including a binder for improving the sealant properties of the packing and said first fiber being an inorganic fiber selected from the group consisting of electrical-grade glass, structural-grade glass, high-strength glass, chemical-grade glass, ceramic and quartz fibers, said second fiber being selected from the group of an organic fiber selected from the group consisting of sintered polytetrafluoroethylene (TFE), polyethylene, polypropylene, aramid, nylon, rayon flax, ramie, hemp, jute and cotton, carbon and graphite fibers, the content of inorganic fiber in said combination being from 5 to 95 weight percent.
Packing comprising a core of an inexpensive organic fiber, a braided jacket of inorganic fiber in combination with at least one fiber from the group of organic, carbon or graphite fiber over said core and an impregnant consisting of from 50 to 95 weight percent of dispersed material selected from the group consisting of graphite, MoS.sub.2, TiS.sub.2, WS.sub.2 and talc and from 5 to 50 weight percent of a binder selected from the group consisting of dispersed polytetrafluoroethylene and starch.
Packing, comprising a core of an inexpensive organic fiber, a braided jacket of inorganic fiber over said core and an outer jacket of organic fiber over said jacket of inorganic fiber.
Packing, comprising a core of inexpensive organic fiber and a braided jacket over said core, said organic fiber being selected from the group consisting of jute, flax, hemp, cotton, ramie, nylon, rayon, polyethylene and polypropylene, said braided jacket being formed of strands each consisting of inorganic and jacket organic fibers laid up, twisted or spun together, the content of jacket organic fiber being from 2 to 50 weight percent and said jacket organic fiber being selected from the group consisting of sintered polytetrafluoroethylene, polyethylene, polypropyline, aramid nylon, rayon, flax, ramie, hemp, jute, cotton, carbon and graphite fibers.
Packing, comprising knitted strands of inorganic fiber twisted together with at least one fiber from the group of organic, carbon or graphite fiber, and an impregnant comprising an inorganic lubricant selected from the group consisting of dispersed graphite, MoS.sub.2, TiS.sub.2, WS.sub.2 and talc.
Compression packing comprising at least two braided strands of a twisted yarn of at least one glass fiber and at least one aramid fiber the content of the glass fiber in said yarn being from 5 to 95 weight percent and including an impregnant including tetrafluoroethylene and a lubricant.
Dependencies are inferred from the claim text.