Patents Assigned to Polygon Company
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Patent number: 8317396Abstract: A hybrid bearing cylinder is formed to include a composite sleeve and a metallic jacket positioned around the composite sleeve. The outer diameter of the composite sleeve is less the inner diameter of the metallic jacket to form a pre-designed gap between the composite sleeve and the metallic jacket The metallic jacket of the hybrid bearing cylinder is adapted to be secured to metallic cylinder end caps by threading, welding, swaging, or other metal attachment methods.Type: GrantFiled: September 10, 2009Date of Patent: November 27, 2012Assignee: Polygon CompanyInventor: Elson B. Fish
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Patent number: 7980762Abstract: A hybrid bearing cylinder having a composite sleeve and a metallic jacket positioned around the composite sleeve and secured thereto. The hybrid bearing cylinder is adapted to be secured to metallic cylinder end caps by threading, welding, swaging or other metal attachment methods.Type: GrantFiled: October 5, 2007Date of Patent: July 19, 2011Assignee: Polygon CompanyInventors: Elson B. Fish, Paul H. Lashbrook, Scott Farrisee, James Shobert
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Patent number: 7931403Abstract: A fluid power composite cylinder that includes conductive and resistive material as part of the composite cylinder. The conductive and resistive material to provide a sensor feature that is used to assist position sensing electronic devices in sensing the position of a piston within the cylinder.Type: GrantFiled: February 15, 2008Date of Patent: April 26, 2011Assignee: Polygon CompanyInventors: Elson B. Fish, Paul H. Lashbrook, Scott Farrisee, James Shobert
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Publication number: 20100031815Abstract: A hybrid bearing cylinder is formed to include a composite sleeve and a metallic jacket positioned around the composite sleeve. The outer diameter of the composite sleeve is less the inner diameter of the metallic jacket to form a pre-designed gap between the composite sleeve and the metallic jacket The metallic jacket of the hybrid bearing cylinder is adapted to be secured to metallic cylinder end caps by threading, welding, swaging, or other metal attachment methods.Type: ApplicationFiled: September 10, 2009Publication date: February 11, 2010Applicant: POLYGON COMPANYInventor: Elson B. Fish
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Publication number: 20090255400Abstract: A hybrid piston rod having an outer metallic jacket bonded to a pultruded composite core. The composite core formed of fibrous strands coupled together by a binder material. The hybrid piston rod includes couplers that permit the hybrid piston rod to be coupled to a piston and positioned with a hydraulic cylinder. The resultant hydraulic cylinder can be used for construction equipment or in other applications where hydraulic cylinders are used.Type: ApplicationFiled: April 14, 2009Publication date: October 15, 2009Applicant: POLYGON COMPANYInventor: Elson B. Fish
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Patent number: 7412920Abstract: A fluid activated cylinder assembly including an end cap having an annular protrusion and a hollow cylinder having an end zone. The cylinder applies compressive force to the annular protrusion in the end zone. The end zone having no accommodating cavity and no accommodating protrusion for the annular protrusion.Type: GrantFiled: July 21, 2006Date of Patent: August 19, 2008Assignee: Polygon CompanyInventor: Elson B. Fish
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Publication number: 20080173172Abstract: A fluid power composite cylinder that includes conductive and resistive material as part of the composite cylinder. The conductive and resistive material to provide a sensor feature that is used to assist position sensing electronic devices in sensing the position of a piston within the cylinder.Type: ApplicationFiled: February 15, 2008Publication date: July 24, 2008Applicant: POLYGON COMPANYInventors: Elson B. Fish, Paul H. Lashbrook, Scott Farrisee, James Shobert
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Publication number: 20080081136Abstract: A hybrid bearing cylinder having a composite sleeve and a metallic jacket positioned around the composite sleeve and secured thereto. The hybrid bearing cylinder is adapted to be secured to metallic cylinder end caps by threading, welding, swaging or other metal attachment methods.Type: ApplicationFiled: October 5, 2007Publication date: April 3, 2008Applicant: POLYGON COMPANYInventors: Elson Fish, Paul Lashbrook, Scott Farrisee, James Shobert
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Patent number: 7306078Abstract: A composite material and framework structure adapted to be utilized as a piston and cylinder apparatus. A cylindrical tube composed of a composite material is compressed between two end caps at the axial ends of the cylindrical composite tube. Beam elements extend between the end caps and maintain the compression force on the cylindrical composite tube. The cylindrical composite tube comprises a continuous glass fiber reinforced structure embedded in a resin matrix. The resin matrix provides a self contained lubricant system in a resin rich layer, the lubricant system migrating to the inner surface of the cylindrical composite tube.Type: GrantFiled: September 28, 2005Date of Patent: December 11, 2007Assignee: Polygon CompanyInventor: Elson Fish
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Patent number: 7240607Abstract: A pressure assembly including a cylinder, an end plug and a split ring band. The cylinder has an end, an inner surface and an outer surface. The end plug is inserted into the end of the cylinder, the end plug having an outer surface that is in partial contact with the inner surface of the cylinder. The split ring band is in contact with the outer surface of the cylinder, the split ring band being secured to the cylinder and to the end plug.Type: GrantFiled: August 23, 2005Date of Patent: July 10, 2007Assignee: Polygon CompanyInventor: Elson B. Fish
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Publication number: 20070087147Abstract: A composite bearing cylinder includes an inner bearing surface having a resin matrix with fumed silica therein and having a filament material helically embedded in the resin matrix, a layer of the resin matrix being located at the inner bearing surface, the fumed silica in the resin matrix thereby contributing to the wear resistance of the inner bearing surface.Type: ApplicationFiled: December 4, 2006Publication date: April 19, 2007Applicant: POLYGON COMPANYInventors: Elson Fish, Steven Lubak
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Publication number: 20070012174Abstract: A fluid activated cylinder assembly including an end cap having an annular protrusion and a hollow cylinder having an end zone. The cylinder applies compressive force to the annular protrusion in the end zone. The end zone having no accommodating cavity and no accommodating protrusion for the annular protrusion.Type: ApplicationFiled: July 21, 2006Publication date: January 18, 2007Applicant: POLYGON COMPANYInventor: Elson Fish
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Patent number: 7100492Abstract: A fluid activated cylinder assembly including an end cap having an annular protrusion and a hollow cylinder having an end zone. The cylinder applies compressive force to the annular protrusion in the end zone. The end zone having no accommodating cavity and no accommodating protrusion for the annular protrusion.Type: GrantFiled: October 6, 2004Date of Patent: September 5, 2006Assignee: Polygon CompanyInventor: Elson B. Fish
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Patent number: 6860638Abstract: A spherical bearing including a generally annular first portion having at least a partial substantially spherical outer surface and a generally annular second portion having at least a partial substantially concave surface, the outer surface at least partially engaging the concave surface, at least one of the outer surface and the concave surface having a plurality of frayed polytetraflouroethylene fibers exposed therefrom.Type: GrantFiled: February 28, 2003Date of Patent: March 1, 2005Assignee: Polygon Company, Inc.Inventor: Elson B. Fish
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Patent number: 5669284Abstract: An end cap assembly for a fluid cylinder includes a cylindrical casing having a longitudinal axis and an open end, and an end cap closing the open end of the casing. The end cap has a first connecting device for connecting with the casing, and the casing has a second connecting device for connecting with the end cap, whereby the first and second connecting devices interconnect with each other. A backup device is disposed separate from and engaged against the casing or end cap, and prevents deflection of the engaged casing or end cap in a direction transverse to the longitudinal axis.Type: GrantFiled: July 2, 1996Date of Patent: September 23, 1997Assignee: Polygon CompanyInventor: Elson B. Fish
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Patent number: 5651303Abstract: An end cap assembly for a fluid cylinder includes a cylindrical casing having a longitudinal axis and an open end, and an end cap closing the open end of the casing. The end cap has a first connecting device for connecting with the casing, and the casing has a second connecting device for connecting with the end cap, whereby the first and second connecting devices interconnect with each other. A backup device is disposed separate from and engaged against the casing or end cap, and prevents deflection of the engaged casing or end cap in a direction transverse to the longitudinal axis.Type: GrantFiled: June 2, 1995Date of Patent: July 29, 1997Assignee: Polygon CompanyInventor: Elson B. Fish
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Patent number: 5465647Abstract: An end cap assembly for a fluid cylinder is disclosed. The assembly includes a pair of end caps comprising closure units closing the open ends of a cylindrical casing. Each closure unit has an axially extending annular skirt having an outer cylindrical surface telescope within an open end of the casing. The annular skirt has an annular barb radially projecting from its outer cylindrical surface. The inside cylindrical surface of the casing has an annular groove which receives the annular barb to axially retain the skirt within the open end of the casing. A retaining ring is provided within the annular skirt to radially urge the barb into interlocking engagement with the annular groove.Type: GrantFiled: November 14, 1994Date of Patent: November 14, 1995Assignee: Polygon CompanyInventor: Elson B. Fish
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Patent number: 5129184Abstract: A magnetic sealing device for a refrigeration appliance is disclosed that includes first and second pultruded gaskets, one of the gaskets being connected to the cabinet and the other of the gaskets being connected to the door. One of the gaskets has an extruded magnetic seal strip connected to it that interacts with a magnetically attracted material embedded near the surface of the other gasket. The magnetically attracted material is preferably a ferrous mesh screen and is embedded within at least one of the gaskets during the pultrusion process. When the door is closed against the cabinet the first and second gaskets substantially abut to effectuate a seal therebetween. The first and second gaskets are made of material having a low thermal conductivity so that the accumulation of condensate is reduced or eliminated on the sealing gasket and those portions of the surface of the refrigerator adjacent the gasket.Type: GrantFiled: March 29, 1991Date of Patent: July 14, 1992Assignee: Polygon CompanyInventor: Elson B. Fish