Patents Assigned to Duramax Marine, LLC
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Publication number: 20040079516Abstract: A keel cooler having a standard header with an internal beveled bottom wall, with orifices on the inner wall of the exterior tubes extending into the header, the orifices being in the natural flow path of the coolant flow. The orifices are sufficiently large so as not to restrict the flow of coolant. A fluid flow diverter is additionally provided in the header of the keel cooler for facilitating coolant flow towards both the interior tubes and also towards the exterior tubes.Type: ApplicationFiled: October 29, 2002Publication date: April 29, 2004Applicant: Duramax Marine, LLCInventors: Jeffrey S. Leeson, Michael W. Brakey, P. Charles Miller
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Patent number: 6682804Abstract: A fender protective structure having an inner layer of resilient plastic/elastomer alloy having a delayed elastic response, having voids to reduce weight and allow the inner layer to expand upon impact. A relatively hard top layer is also provided.Type: GrantFiled: April 30, 2001Date of Patent: January 27, 2004Assignee: Duramax Marine, LLCInventor: Roy Lee Orndorff, Jr.
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Patent number: 6648510Abstract: A bearing assembly for supporting a water-lubricated drive shaft includes a plurality of load-bearing staves made from a composite material known as Slippery Polymer Alloy (SPA and a plurality of rubber staves. The composite staves are spaced circumferentially around the bearing housing on the inner wall. The rubber staves are also spaced circumferentially around the bearing housing, the rubber staves being located between adjoining composite staves and having compression force on their end portions to lock the composite staves in place.Type: GrantFiled: August 23, 2001Date of Patent: November 18, 2003Assignee: Duramax Marine, LLCInventors: Roy L. Orndorff, Jr., Richard C. Spangler
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Patent number: 6626573Abstract: A bearing assembly for supporting a drive shaft of a ship wherein the shaft if generally to be supported by such bearing assembly in a horizontally extending position. The bearing assembly has a housing with a cylindrical shell mounted therein having a central bore with a longitudinally extending central axis. The shell has a plurality of circumferentially spaced staves provided therein which project into the central bore to support the drive shaft. The staves have transverse grooves provided therein.Type: GrantFiled: May 4, 2001Date of Patent: September 30, 2003Assignee: Duramax Marine, LLCInventor: Roy Lee Orndorff, Jr.
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Publication number: 20030173744Abstract: A sealing device for use with a drive shaft of a water vessel. The sealing device comprises a housing for a seal and bearing, a compression ring, a lip seal flange attachment and a diaphragm for tracking the movement of the shaft. The diaphragm is made of a resilient, flexible material and is operatively connected to the seal housing. In operation, the diaphragm tracks the motion of the drive shaft so that the drive shaft may move freely in the hull of the vessel. The diaphragm allows the rigid seal housing to also move in response to any axial, lateral or circular-axial (wobble-like) movement of the shaft so that a constant seal around the shaft is provided.Type: ApplicationFiled: February 5, 2003Publication date: September 18, 2003Applicant: Duramax Marine, LLCInventor: George MacDonald
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Patent number: 6575227Abstract: A keel cooler having a beveled bottom wall, with orifices on the inner wall of the exterior tubes extending into the header, the orifices being in the natural flow path of coolant flow. The orifices are sufficiently large so as not to restrict the flow of coolant. The anode assemblies and drain plugs are mounted on the beveled bottom wall.Type: GrantFiled: October 26, 1999Date of Patent: June 10, 2003Assignee: Duramax Marine, LLCInventors: Jeffrey S. Leeson, Eric K. Peoples, Michael W. Brakey
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Publication number: 20020162643Abstract: A header for a heat exchanger, the header having a beveled closed end portion.Type: ApplicationFiled: April 9, 2002Publication date: November 7, 2002Applicant: Duramax Marine, LLCInventors: Jeffrey S. Leeson, Eric K. Peoples, Michael W. Brakey
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Patent number: 6406184Abstract: A bearing assembly for supporting a drive shaft includes a cylindrical housing, and a plurality of elastomeric bearing sections disposed within the housing. The bearing sections are bonded to the housing by first applying a pattern of alternating parallel lines of adhesive to the inner diameter of the housing, installing the bearing sections, and inflating an airbag within the housing to thereby apply a uniform radial pressure to the inside of the housing while the adhesive cures.Type: GrantFiled: May 25, 2001Date of Patent: June 18, 2002Assignee: Duramax Marine, LLCInventors: Roy Lee Orndorff, Jr., Philip Paul Brady, Warren Keith Langston
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Publication number: 20020051586Abstract: A bearing assembly for supporting a water-lubricated drive shaft includes a plurality of load-bearing staves made from a composite material known as Slippery Polymer Alloy (SPA and a plurality of rubber staves. The composite staves are spaced circumferentially around the bearing housing on the inner wall. The rubber staves are also spaced circumferentially around the bearing housing, the rubber staves being located between adjoining composite staves and having compression force on their end portions to lock the composite staves in place.Type: ApplicationFiled: August 23, 2001Publication date: May 2, 2002Applicant: Duramax Marine, LLCInventors: Roy L. Orndorff, Richard C. Spangler
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Publication number: 20010020755Abstract: A method of making a fender protective structure having a layer of resilient plastic/elastomer alloy having a delayed elastic response, comprising providing a mold, placing elastomer spacers in the mold, adding the plastic and elastomer to the mold under heat and pressure, and opening the mold and removing the spacers to create voids the alloy.Type: ApplicationFiled: April 30, 2001Publication date: September 13, 2001Applicant: Duramax Marine, LLCInventor: Roy Lee Orndorff
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Patent number: 6238093Abstract: A bearing assembly for supporting a drive shaft includes a cylindrical housing, and a plurality of elastomeric bearing sections disposed within the housing. The bearing sections are bonded to the housing by first applying a pattern of alternating parallel lines of adhesive to the inner diameter of the housing, installing the bearing sections, and inflating an airbag within the housing to thereby apply a uniform radial pressure to the inside of the housing while the adhesive cures.Type: GrantFiled: April 7, 1999Date of Patent: May 29, 2001Assignee: Duramax Marine, LLCInventors: Roy Lee Orndorff, Jr., Philip Paul Brady, Warren Keith Langston
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Patent number: 6224809Abstract: A method of making a fender protective structure having a layer of resilient plastic/elastomer alloy having a delayed elastic response, comprising providing a mold, placing elastomer spacers in the mold, adding the plastic and elastomer to the mold under heat and pressure, and opening the mold and removing the spacers to create voids the alloy.Type: GrantFiled: April 21, 1999Date of Patent: May 1, 2001Assignee: Duramax Marine, LLCInventor: Roy Lee Orndorff, Jr.
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Patent number: 6039320Abstract: An adjustable sealing device for sealing between rotatable drive shaft, such as a propeller drive shaft, and the aperture in a structure, such as the hull or bulkhead of a vessel, through which the shaft passes. The device is generally rigid and is comprised of an adapter ring, a slide ring, a diaphragm positioned between the adapter ring and the slide ring, a friction ring having one end positioned in the adapter ring and a seal surface engageable with the seal surface of a seal ring rotatable with the shaft, biasing means positioned between the slide ring and the friction ring for urging the seal surfaces together, and a spring cover acting as a seal redundant to the diaphragm.Type: GrantFiled: June 13, 1997Date of Patent: March 21, 2000Assignee: Duramax Marine, LLCInventor: George MacDonald