Patents Assigned to Polygon Company
  • Patent number: 8317396
    Abstract: 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: Grant
    Filed: September 10, 2009
    Date of Patent: November 27, 2012
    Assignee: Polygon Company
    Inventor: Elson B. Fish
  • Patent number: 7980762
    Abstract: 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: Grant
    Filed: October 5, 2007
    Date of Patent: July 19, 2011
    Assignee: Polygon Company
    Inventors: Elson B. Fish, Paul H. Lashbrook, Scott Farrisee, James Shobert
  • Patent number: 7931403
    Abstract: 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: Grant
    Filed: February 15, 2008
    Date of Patent: April 26, 2011
    Assignee: Polygon Company
    Inventors: Elson B. Fish, Paul H. Lashbrook, Scott Farrisee, James Shobert
  • Publication number: 20100031815
    Abstract: 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: Application
    Filed: September 10, 2009
    Publication date: February 11, 2010
    Applicant: POLYGON COMPANY
    Inventor: Elson B. Fish
  • Publication number: 20090255400
    Abstract: 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: Application
    Filed: April 14, 2009
    Publication date: October 15, 2009
    Applicant: POLYGON COMPANY
    Inventor: Elson B. Fish
  • Patent number: 7412920
    Abstract: 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: Grant
    Filed: July 21, 2006
    Date of Patent: August 19, 2008
    Assignee: Polygon Company
    Inventor: Elson B. Fish
  • Publication number: 20080173172
    Abstract: 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: Application
    Filed: February 15, 2008
    Publication date: July 24, 2008
    Applicant: POLYGON COMPANY
    Inventors: Elson B. Fish, Paul H. Lashbrook, Scott Farrisee, James Shobert
  • Publication number: 20080081136
    Abstract: 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: Application
    Filed: October 5, 2007
    Publication date: April 3, 2008
    Applicant: POLYGON COMPANY
    Inventors: Elson Fish, Paul Lashbrook, Scott Farrisee, James Shobert
  • Patent number: 7306078
    Abstract: 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: Grant
    Filed: September 28, 2005
    Date of Patent: December 11, 2007
    Assignee: Polygon Company
    Inventor: Elson Fish
  • Patent number: 7240607
    Abstract: 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: Grant
    Filed: August 23, 2005
    Date of Patent: July 10, 2007
    Assignee: Polygon Company
    Inventor: Elson B. Fish
  • Publication number: 20070087147
    Abstract: 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: Application
    Filed: December 4, 2006
    Publication date: April 19, 2007
    Applicant: POLYGON COMPANY
    Inventors: Elson Fish, Steven Lubak
  • Publication number: 20070012174
    Abstract: 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: Application
    Filed: July 21, 2006
    Publication date: January 18, 2007
    Applicant: POLYGON COMPANY
    Inventor: Elson Fish
  • Patent number: 7100492
    Abstract: 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: Grant
    Filed: October 6, 2004
    Date of Patent: September 5, 2006
    Assignee: Polygon Company
    Inventor: Elson B. Fish
  • Patent number: 6860638
    Abstract: 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: Grant
    Filed: February 28, 2003
    Date of Patent: March 1, 2005
    Assignee: Polygon Company, Inc.
    Inventor: Elson B. Fish
  • Patent number: 5669284
    Abstract: 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: Grant
    Filed: July 2, 1996
    Date of Patent: September 23, 1997
    Assignee: Polygon Company
    Inventor: Elson B. Fish
  • Patent number: 5651303
    Abstract: 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: Grant
    Filed: June 2, 1995
    Date of Patent: July 29, 1997
    Assignee: Polygon Company
    Inventor: Elson B. Fish
  • Patent number: 5465647
    Abstract: 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: Grant
    Filed: November 14, 1994
    Date of Patent: November 14, 1995
    Assignee: Polygon Company
    Inventor: Elson B. Fish
  • Patent number: 5129184
    Abstract: 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: Grant
    Filed: March 29, 1991
    Date of Patent: July 14, 1992
    Assignee: Polygon Company
    Inventor: Elson B. Fish