Patents by Inventor Alan James Roddis

Alan James Roddis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20100123055
    Abstract: A seal support system for a device for sealing an item of rotating equipment, including a device for generating air movement, includes a vessel for holding fluid for supplying to the sealing device. The system further includes an adjustable stand on which the vessel is mounted and a device for deflecting air along a path into which the vessel can be positioned.
    Type: Application
    Filed: November 18, 2009
    Publication date: May 20, 2010
    Inventor: Alan James Roddis
  • Patent number: 7712744
    Abstract: A gland plate includes a rigid, disk-shaped element that includes at least one radially extending wall having a thickness of from about 0.1 to 4 mm.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: May 11, 2010
    Assignee: AES Engineering Ltd.
    Inventor: Alan James Roddis
  • Publication number: 20090140494
    Abstract: A flow inducing ring for a mechanical seal includes a body portion having a first edge face and a second edge face, and at least one first groove extending both axially and circumferentially in one direction across the body portion from the first edge face to the second edge face. At least one second groove extends both axially and circumferentially in an opposite direction across the body portion from the first edge face to the second edge face. Each of the first groove and the second groove includes an entry portion, configured to draw a barrier fluid into the groove from the first edge face, and an exit portion, that is configured to expel barrier fluid from the groove to the second edge face and to impede the drawing of barrier fluid into the groove from the second edge face.
    Type: Application
    Filed: March 31, 2006
    Publication date: June 4, 2009
    Inventor: Alan James Roddis
  • Publication number: 20090127792
    Abstract: A mechanical seal includes an elastomeric member, a spring biasing device, a longitudinally floating first member, a longitudinally non-floating second member and a longitudinally floating seal face. The elastomeric member is in a sealing engagement with the seal face. The first and second members and the spring biasing device are longitudinally positioned between the seal face and the second member. The first member and the second member are longitudinally restrained and rotationally coupled by at least one substantially male radially protruding portion in one of the members engaging in at least one substantially female portion in the other member of the two members. The first and second members are arranged for a sealing engagement with the seal face in a single seal utilizing the elastomeric member, or with the seal face and an additional seal face in a double seal utilizing an additional elastomeric member.
    Type: Application
    Filed: November 24, 2008
    Publication date: May 21, 2009
    Inventor: Alan James Roddis
  • Publication number: 20080106042
    Abstract: A rotary seal has a floating seal face in a sealing relationship with a stationary seal face, and a fluid collection cavity adjacent the floating seal face and the stationary seal face. The seal further includes a device for introducing a lubricant into the vicinity of the fluid collection cavity and a device for promoting coalescence of the lubricant, so that the lubricant accumulates in the fluid collection cavity and lubricates the seal faces.
    Type: Application
    Filed: December 30, 2005
    Publication date: May 8, 2008
    Inventors: Alan James Roddis, Andrew Colverson
  • Publication number: 20070296157
    Abstract: A bearing seal includes a radially split stator and a rotor. The rotor is enclosed within the stator along the internal length of the rotor. The rotor may, optionally, also be radially split.
    Type: Application
    Filed: June 20, 2007
    Publication date: December 27, 2007
    Inventor: Alan James Roddis
  • Publication number: 20070246893
    Abstract: A bearing seal device has an air purge mechanism that includes a rotor connected to the shaft of a piece of rotating equipment and a stator connected to the housing for the rotating equipment. An air passage extends between an inlet and an outlet and is at least partially defined by circumferentially extending stator and/or rotor surfaces. Preferably, the stator incorporates an orifice, which permits the attachment of an air supply line. The air purge mechanism may include a self-compensating air supply regulator device, located adjacent a circumferential air distribution cavity and substantially adjacent to one or more atmospheric communication orifices. The bearing seal device provides sealing integrity when the shaft is both idle and operational.
    Type: Application
    Filed: April 19, 2007
    Publication date: October 25, 2007
    Inventor: Alan James Roddis
  • Publication number: 20070241513
    Abstract: A seal device, which accommodates axial displacement between a housing and shaft of an item of rotating equipment, includes a stator which locates into the housing of a piece of rotating equipment. A first rotor locates on the shaft of the rotating equipment and a second rotor is rotationally coupled to the first rotor and is permitted axially to float with respect to the first rotor. The device provides sealing integrity when the shaft is both idle and operational. The sealing device may be used, for instance, in a double ended centrifugal pump where shaft displacement occurs from thermal expansion.
    Type: Application
    Filed: April 18, 2007
    Publication date: October 18, 2007
    Inventor: Alan James Roddis
  • Publication number: 20070222158
    Abstract: An alignment apparatus includes a first stator, located in a stator of a piece of rotating equipment, and a second stator couplingly connected to the first stator and able to be angularly rotated relative to the first stator. The second stator can seal an interface between a shaft and housing in the piece of rotating equipment. The alignment apparatus permits angular misalignment between a stator, a housing and a rotor shaft, and may be used, for example, in a bearing protector or an isolator installed on a Pillow Box.
    Type: Application
    Filed: March 22, 2007
    Publication date: September 27, 2007
    Inventor: Alan James Roddis
  • Patent number: 7029012
    Abstract: A seal that provides sealing between a rotatable shaft and a housing has a stationary part for connection to the housing and a rotary part for rotation with the shaft. The rotary part includes a sleeve for mounting on the shaft. One end of the sleeve is provided with a non-elastometric sealing arrangement. The sealing arrangement has sealing surfaces for contacting outer circumferential surfaces of the sleeve and the shaft as well as means for effecting sealing engagement between each of said sleeve and said shaft and a respective sealing surface.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: April 18, 2006
    Assignee: AES Engineering Ltd.
    Inventor: Alan James Roddis
  • Publication number: 20030234495
    Abstract: A fluid flow inducer comprises a stationary part and a rotating part, and has a first member having a radially indented face, and a second member having a radially and outwardly inclined surface. The outwardly inclined surface is spaced from and faces the radially indented face. One of the radially indented face and the outwardly inclined surface is configured for provision on the stationary part, and the other of the radially indented face and the outwardly inclined surface is configured for provision on the rotating part.
    Type: Application
    Filed: March 18, 2003
    Publication date: December 25, 2003
    Inventor: Alan James Roddis
  • Publication number: 20030230851
    Abstract: A mechanical seal comprises a drive end, a seal face holder with a seal face inserted into the seal face holder. A metal bellows stack is located between the drive end and the seal face holder, and a drive sleeve is secured to the drive end. The drive sleeve is a separate component to the drive end and the drive sleeve is located radially inwardly of the metal bellows stack.
    Type: Application
    Filed: March 18, 2003
    Publication date: December 18, 2003
    Inventors: Alan James Roddis, Christopher Newton
  • Patent number: 6224061
    Abstract: A mechanical shaft seal includes a rotary assembly and a stationary assembly each of which carry a respective mating seal face. One of the seal faces is located on a floating component mounted for axial movement with respect to the shaft. Means are provided for urging the floating component in a direction towards the other of said seal faces. A non-metallic end cap is provided to protect the seal in the case where the sealed product attacks metallic material. The end cap is arranged so that, in use, it is subjected to substantially balanced hydraulic loading.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: May 1, 2001
    Assignee: AES Engineering Limited
    Inventor: Alan James Roddis