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| Number | Title | Issue Date |
| 7353645 | Material for gland packing and the gland packing A reinforcing member made from a fibrous material and disposed at least on one face of a strip-like expanded graphite to form a strip-like base member. The base member is stranded to be formed as a cord-like member. At this time, one side end edge of the base member... | 04/08/2008 |
| 7115221 | Method for producing graphite powder with an increased bulk density A method for increasing the Scott density of synthetic and/or natural graphite powders of any particle size distribution, preferably of highly-pure graphite, by subjecting the graphite powder to an autogenous surface treatment. The powder is used, in particular, for... | 10/03/2006 |
| 6553639 | Method of manufacturing seals A method of manufacturing a leaf seal for use between rotating components comprises forming corrugations within a metallic strip and feeding the corrugated strip into a seal guide. The corrugated strip is then pressed into the guide by an angled ram such ... | 04/29/2003 |
| 6082739 | Gland packing The present invention relates to a gland packing which is made of a material configured by laminating an expanded graphite tape into a spiral shape by winding. The gland packing can prevent penetration leakage through minute gaps existing in the laminated... | 07/04/2000 |
| 6045136 | Split sealing element A split sealing member for a rotary shaft comprising a coiled body, with non-adjoined ends, having a plurality of turns about a central axis, bent along the course of the body such that the body is divided into a radially-inner portion and a radially-oute... | 04/04/2000 |
| 6039325 | Resilient braided rope seal A resilient braided rope seal for use in high temperature applications includes a center core of fibers, a resilient canted spring member supporting the core and at least one layer of braided sheath fibers tightly packed together overlying the spring memb... | 03/21/2000 |
| 5803464 | Gland packing The present invention relates to a gland packing which is made of a material configured by laminating an expanded graphite tape into a spiral shape by winding. The gland packing can prevent penetration leak-age through minute gaps existing in the laminate... | 09/08/1998 |
| 5301960 | Improved spirally-formed seal for shafts and valve stems 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 envelopi... | 04/12/1994 |
| 5022660 | Lantern ring coil A length of plastic material may be formed into a helix and lantern rings may be cut therefrom for utilization with conventional packing adjacent a shaft in rotating or reciprocating equipment. The material exhibits a generally H-shaped cross-section defi... | 06/11/1991 |
| 4934657 | Graphite spiral packing for stuffing box and method for manufacturing the same A helical spacer, e.g. made of stiffly flexible nylon and having flat axially-presented surfaces, in slid onto a cylindrical mandrel, e.g. a die inside body. Flexible corrugated ribbon of expanded graphite is helically wound onto the mandrel between turns... | 06/19/1990 |
| 4844479 | Structure of a gland packing box A structure of a gland packing box is enhanced in the lubricating function and cooling function of the seal part, by forming at least one disclocating part for partly dislocating in the axial direction a gland packing of the gland packing box. The disloca... | 07/04/1989 |
| 4796351 | Gaskets An annealed, high tensile strength, heat hardenable metal strip is shaped into a spiral wound gasket profile prior to heat treating the strip to harden it and then winding it with a strip of sealing material into a spiral wound gasket.... | 01/10/1989 |
| 4239245 | Packing seals and method of making A method of making a packing seal comprising compression molding a thermo-setting plastic in a spiral mold so that a partially-cured spiral seal is formed, removing the partially-cured seal from the mold, and winding it on a mandrel of a selected diameter... | 12/16/1980 |
